Leg : 37 Top/Bottom Interval(mm): 50/ 80 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 139.00 Rock Type: IGNEOUS
Core: 1 Sample Midpoint(m) : 145.07 Sect/Pc #: 5/PCE 1
ROCK = PLAG PHYRIC BASALT;
Texture: INTERSERTAL,INTERSTITIAL, PORPHYRITIC*
Phenocrysts- CLINOPYROXENE ( <1%)
FRESH, 1 SMALL XTL SEEN;
PLAGIOCLASE ( 60%)
Size(mm): TO 4 Morphology: EUHEDRAL
Groundmass - PLAGIOCLASE
Size(mm): 0.1-1 Morphology: MICROLITES
ALIGNED SHOWING FLOW STRUCTURE;
PYROXENE
Size(mm): 0.1-1
GLASS
FRESH;
OPAQUE MINERALS
Size(mm): 0.1-1
INCLUDES MAGN+ILMENITE;
GROUNDMASS IS APHANITIC-CRYPTOCRYSTALLINE*
Alteration - SMECTITE
Location: INTERSTITIAL Replacing: GLASS
FERROUS HYDROX MINS
Replacing: GLASS
Vesicles -
Size(mm): TO 1
Percent: 5
Leg : 37 Top/Bottom Interval(mm): 50/ 81 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 139.00 Rock Type: IGNEOUS
Core: 1 Sample Midpoint(m) : 145.07 Sect/Pc #: 5/PCE 1
ROCK = PLAG PHYRIC BASALT
VERY SIMILAR TO 332B-1-5,PCE 1,THOUGH MORE
ALTERED;
Texture: VARIOLITIC-INTERSERTAL,INTERSTITIAL.PORPHYRITIC*
Phenocrysts- PLAGIOCLASE
Size(mm): TO 4 Morphology: EUHEDRAL
FRESH WITH OCCASIONAL CORROSION,FINELY VEINED
WITH SMEC*
Groundmass - OLIVINE ( TR%)
Size(mm): 0.1-1
1 OR 2 XTLS, MAKES SLIDE GOOD FOR STUDY OF
INCIPIENT ALTERATION,ID UNCERTAIN FOR OL;
PLAGIOCLASE
Size(mm): 0.1-1
PYROXENE
Size(mm): 0.1-1
OPAQUE MINERALS
Size(mm): 0.1-1
INCLUDES MAGN+ILMENITE;
GLASS
FRESH*
Alteration - SMECTITE
Location: PHENOS Replacing: PLAG
HEMATITE
Location: GROUNDMASS,
Location: INTERSTITIAL
UNSURE IF HEMATITE*
Vesicles -
Size(mm): 1
Percent: 3
Filling: SMECTITE
Leg : 37 Top/Bottom Interval(mm): 1100/1130 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 139.00 Rock Type: IGNEOUS
Core: 1 Sample Midpoint(m) : 146.12 Sect/Pc #: 5/PCE 12
ROCK = PLAG PHYRIC BASALT;
Texture: VARIOLITIC-INTERGRANULAR-INTERSERTAL,PHYRIC
GROUNDMASS SLIGHTLY COARSER THAN IN UPPER PART OF
SECTION, INTERSTITIAL*
PLAG 50-60
SLIGHTLY ALTERED*
Groundmass - OLIVINE
Size(mm): 0.1-1
DEFINITELY PRESENT;
PLAGIOCLASE
Size(mm): 0.1-1
PYROXENE
Size(mm): 0.1-1
OPAQUE MINERALS
Size(mm): 0.1-1
INCLUDES MAGN+ILMENITE;
GLASS
ALTERED*
Alteration - SMECTITE
Location: GROUNDMASS, Replacing: GLASS
Location: INTERSTITIAL
Vesicles -
Size(mm): 0.2-0.5
Percent: 2
Filling: SMECTITE
CHLOROPHAEITE POSSIBLE FILLING*
Leg : 37 Top/Bottom Interval(mm): 210/ 240 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 151.50 Rock Type: IGNEOUS
Core: 2 Sample Midpoint(m) : 151.72 Sect/Pc #: 1/PCE 3A
ROCK = PLAG PHYRIC BASALT;
Texture: INTERSTITIAL,PORPHYRITIC
VERY PORPHYRITIC*
Phenocrysts- PLAGIOCLASE ( >5%)
Size(mm): >0.5
ONE PHENOS >1CM SLIGHTLY ALTERED*
Groundmass - OLIVINE
Size(mm): 0.1-1
PLAGIOCLASE
Size(mm): 0.1-1
PYROXENE
Size(mm): 0.1-1
OPAQUE MINERALS
Size(mm): 0.1-1
INCLUDES MAGN+ILMENITE;
GLASS
ALTERED*
Alteration - SERICITE
Location: PHENOS Replacing: PLAG
UNCERTAIN IF IT IS SERICITE;
SMECTITE
Location: GROUNDMASS,
Location: INTERSTITIAL
Vesicles -
Size(mm): 2
Percent: 1
Filling: SMECTITE,CARBS
TOTALLY FILLED,SMEC NEXT TO WALL-THEN CARB*
Leg : 37 Top/Bottom Interval(mm): 1310/1340 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 151.50 Rock Type: IGNEOUS
Core: 2 Sample Midpoint(m) : 152.83 Sect/Pc #: 1/
ROCK = PLAG-OL PHYRIC BASALT;
Texture: INTERGRANULAR,INTERSTITIAL*
Phenocrysts- OLIVINE ( 1-5%)
Size(mm): >0.5
SOMEWHAT ALTERED,LARGE PHENOS, SUGGESTS AN
MG-RICH MAGMA,C.F. EQUIVALENT FACIES IN 332A;
PLAGIOCLASE ( >5%)
Size(mm): >0.5
SLIGHTLY ALTERED*
Groundmass - OLIVINE
Size(mm): 0.1-1
PLAGIOCLASE
Size(mm): 0.1-1
PYROXENE
Size(mm): 0.1-1
OPAQUE MINERALS
Size(mm): 0.1-1
INCLUDES MAGN+ILMENITE;
GLASS
ALTERED*
Alteration - SMECTITE
Location: PHENOS,
Location: GROUNDMASS,
Location: INTERSTITIAL
CARBONATE
Location: PHENOS, Replacing: OLIVINE
Location: GROUNDMASS
Vesicles -
Size(mm): 0.5
Percent: 3-5
Filling: SMEC, CARB
Leg : 37 Top/Bottom Interval(mm): 130/ 150 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 151.50 Rock Type: IGNEOUS
Core: 2 Sample Midpoint(m) : 153.14 Sect/Pc #: 2/PCE 2
ROCK = PLAG PHYRIC BASALT;
Texture: VARIOLITIC,INTERSTITIAL, PORPHYRITIC*
Phenocrysts- PLAGIOCLASE ( >5%)
SLIGHTLY ALTERED*
Groundmass - OLIVINE ( RARE%)
Size(mm): 1-0.1
PLAGIOCLASE
Size(mm): 1-0.1
PYROXENE
Size(mm): 1-0.1
OPAQUE MINERALS
INCLUDES MAGN+ILMENITE;
GLASS
FRESH, CONTAINS SOME OF THE OLIVINE*
Alteration - SMECTITE
Location: GROUNDMASS,
Location: INTERSTITIAL
Vesicles -
Size(mm): <1
Percent: 5
Filling: SMECTITE
Leg : 37 Top/Bottom Interval(mm): 1130/1160 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 151.50 Rock Type: IGNEOUS
Core: 2 Sample Midpoint(m) : 154.14 Sect/Pc #: 2/PCE 10B
ROCK = PLAG PHYRIC BASALT;
Texture: VARIOLITIC, PORPHYRITIC*
Phenocrysts- PLAGIOCLASE ( >5%)
Size(mm): >0.5
FRESH, VERY LARGE XTLS*
Groundmass - OLIVINE
Size(mm): 0.1-1
SIGNIFICANT AMOUNTS OF OL IN GROUNDMASS;
PLAGIOCLASE
Size(mm): 0.1-1
PYROXENE
Size(mm): 0.1-1
OPAQUE MINERALS
Size(mm): 0.1-1
INCLUDES MAGN+ILMENITE*
Alteration - SMECTITE
Location: GROUNDMASS
Vesicles -
Size(mm): <1
Percent: 3-5
Leg : 37 Top/Bottom Interval(mm): 360/ 0 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 151.50 Rock Type: IGNEOUS
Core: 2 Sample Midpoint(m) : 154.86 Sect/Pc #: 3/PCE 4
ROCK = PLAG MOD PHYRIC BASALT;
Texture: VARIOLITIC,INTERSERTAL, MODERATELY PHYRIC
GROUNDMASS; INTERSTITIAL,QUENCH TEXTURE,SOMEWHAT
ALTERED,VERY FINE-GRAINED*
Phenocrysts- OLIVINE ( <1%)
Size(mm): <0.5
ALTERED, MICROPHENOS;
PLAGIOCLASE ( 1-5%)
Size(mm): >0.5
FRESH*
Groundmass - OLIVINE
Size(mm): 0.1-1
PLAGIOCLASE
Size(mm): 0.1-1
PYROXENE
Size(mm): 0.1-1
OPAQUE MINERALS
Size(mm): 0.1-1
INCLUDES MAGN+ILMENITE;
GLASS
ALTERED*
Alteration - SMECTITE
Location: GROUNDMASS, Replacing: GLASS
Location: INTERSTITIAL
CARBONATE
Replacing: OL PHENOS,GLASS
Vesicles -
Size(mm): 0.8
Percent: 2-5
Filling: SMEC,HEMATITE,
Filling: CHLOROPHAEITE,
Filling: FE.OXIDES
Leg : 37 Top/Bottom Interval(mm): 640/ 670 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 151.50 Rock Type: IGNEOUS
Core: 2 Sample Midpoint(m) : 155.16 Sect/Pc #: 3/
ROCK = PLAG PHYRIC BASALT;
Texture: INTERSTITIAL, PORPHYRITIC*
Phenocrysts- PLAGIOCLASE ( >5%)
Size(mm): >0.5
FRESH AND ALTERED XTLS*
Groundmass - OLIVINE
Size(mm): 0.1-1
PLAGIOCLASE
Size(mm): 0.1-1
PYROXENE
Size(mm): 0.1-1
OPAQUE MINERALS
Size(mm): 0.1-1
INCLUDES MAGN+ILMENITE*
Alteration - SMECTITE
Location: GROUNDMASS, Replacing: GLASS
Location: INTERSTITIAL
Vesicles -
Size(mm): <1
Percent: 5
Filling: SMECTITE
Leg : 37 Top/Bottom Interval(mm): 1060/1180 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 151.50 Rock Type: IGNEOUS
Core: 2 Sample Midpoint(m) : 158.62 Sect/Pc #: 5/PCE 10
ROCK = PLAG-OL PHYRIC BASALT;
Texture: INTERGRANULAR,INTERSERTAL, PORPHYRITIC*
Phenocrysts- OLIVINE ( 1-5%)
Size(mm): <0.5
MICROPHENOS,FRESH;
PLAGIOCLASE ( >5%)
Size(mm): >0.5
FRESH*
Groundmass - OLIVINE
Size(mm): 0.1-1
PLAGIOCLASE
Size(mm): 0.1-1
PYROXENE
Size(mm): 0.1-1
GLASS
ALTERED*
Alteration - SMECTITE
Replacing: GLASS
Vesicles -
Size(mm): 1
Percent: 5
Filling: SMEC,CARB
Filling: ZEOLITES
NATROLITE?*
Leg : 37 Top/Bottom Interval(mm): 410/ 430 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 151.50 Rock Type: IGNEOUS
Core: 2 Sample Midpoint(m) : 159.42 Sect/Pc #: 6/PCE 6
ROCK = PLAG PHYRIC BASALT;
Texture: VARIOLITIC,INTERSERTAL,INTERGRANULAR,PHYRIC
PORPHYRITIC, GROUNDMASS: INTERSTITIAL*
Phenocrysts- OLIVINE ( <1%)
Size(mm): <0.5
MICROPHENOS IN GROUNDMASS,SLIGHTLY ALTERED;
PLAGIOCLASE ( >5%)
FRESH*
Groundmass - OLIVINE
Size(mm): 0.1-1
PLAGIOCLASE
Size(mm): 0.1-1
PYROXENE
Size(mm): 0.1-1
OPAQUE MINERALS
Size(mm): 0.1-1
INCLUDES MAGN+ILMENITE;
GLASS
ALTERED*
Alteration - SMECTITE
Location: GROUNDMASS, Replacing: GLASS
Location: INTERSTITIAL
CARBONATE
Location: GROUNDMASS Replacing: OL
IDDINGSITE ( TR%)
Location: GROUNDMASS Replacing: OL
Vesicles -
Size(mm): 0.3
Percent: 5-8
Filling: CARBONATE
Leg : 37 Top/Bottom Interval(mm): 900/ 930 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 151.50 Rock Type: IGNEOUS
Core: 2 Sample Midpoint(m) : 159.92 Sect/Pc #: 6/PCE 9
ROCK = PLAG PHYRIC BASALT;
Texture: VARIOLITIC,INTERSERTAL, PORPHYRITIC
GROUNDMASS: INTERSTITIAL*
Phenocrysts- PLAGIOCLASE ( >5%)
Size(mm): >0.5
FRESH*
Groundmass - OLIVINE
Size(mm): 0.1-1
PLAGIOCLASE
Size(mm): 0.1-1
PYROXENE
Size(mm): 0.1-1
OPAQUE MINERALS
Size(mm): 0.1-1
INCLUDES MAGN+ILMENITE;
GLASS
ALTERED*
Alteration - SMECTITE
Location: GROUNDMASS, Replacing: GLASS
Location: INTERSTITIAL
Vesicles -
Size(mm): 4
Percent: 5
Filling: SMEC,ZEOLITES
SMEC NEXT TO WALL-THEN ZEOLITE*
Leg : 37 Top/Bottom Interval(mm): 470/ 500 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 151.50 Rock Type: IGNEOUS
Core: 2 Sample Midpoint(m) : 160.99 Sect/Pc #: CC/PCE 5
ROCK = PLAG PHYRIC BASALT;
Texture: VARIOLITIC,INTERSERTAL, PORPHYRITIC*
Phenocrysts- PLAGIOCLASE ( >5%)
Size(mm): >0.5
SLIGHTLY ALTERED*
Groundmass - OLIVINE
Size(mm): >1
PLAGIOCLASE
Size(mm): >1
PYROXENE
Size(mm): >1
OPAQUE MINERALS
Size(mm): >1
INCLUDES MAGN+ILMENITE;
GLASS
ALTERED*
Alteration - SMECTITE
Location: GROUNDMASS Replacing: GLASS
CARBONATES
Location: VESICLES,VEIN
Vesicles -
Size(mm): 0.5
Percent: 3-5
Filling: CARBS,ZEOLITE
Leg : 37 Top/Bottom Interval(mm): 150/ 180 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 199.00 Rock Type: IGNEOUS
Core: 3 Sample Midpoint(m) : 199.17 Sect/Pc #: 1/PCE 2A
ROCK = PLAG-OL PHYRIC BASALT;
Texture: VARIOLITIC,INTERGRANULAR, PORPHYRITIC*
Phenocrysts- PLAGIOCLASE ( >5%)
Size(mm): >0.5
APPROX COMP AN70,FRESH;
OLIVINE ( 1-5%)
Size(mm): >0.5
FRESH*
Groundmass - OLIVINE
Size(mm): 0.1-1
PLAGIOCLASE
Size(mm): 0.1-1
PYROXENE
Size(mm): 0.1-1
OPAQUE MINERALS
Size(mm): 0.1-1
INCLUDES MAGN+ILMENITE;
GLASS
ALTERED*
Alteration - SMECTITE
Location: GROUNDMASS Replacing: GLASS
Vesicles -
Size(mm): 0.6
Percent: 2
NEGLIGIBLE FILLINGS*
Leg : 37 Top/Bottom Interval(mm): 1000/ 0 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 199.00 Rock Type: IGNEOUS
Core: 3 Sample Midpoint(m) : 200.00 Sect/Pc #: 1/
ROCK = PLAG PHYRIC BASALT;
Texture: VARIOLITIC,INTERSERTAL, PORPHYRITIC
GROUNDMASS: INTERSTITIAL*
Phenocrysts- PLAGIOCLASE ( >5%)
Size(mm): >0.5
FRESH*
Groundmass - OLIVINE
Size(mm): 0.1-1
PLAGIOCLASE
Size(mm): 0.1-1
PYROXENE
Size(mm): 0.1-1
OPAQUE MINERALS
Size(mm): 0.1-1
INCLUDES MAGN+ILMENITE;
GLASS
ALTERED*
Alteration - SMECTITE
Location: GROUNDMASS, Replacing: GLASS
Location: INTERSTITIAL
Vesicles -
Size(mm): 3
Percent: 3
Filling: SMEC,ZEOLITE
Leg : 37 Top/Bottom Interval(mm): 1090/1100 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 199.00 Rock Type: IGNEOUS
Core: 3 Sample Midpoint(m) : 204.60 Sect/Pc #: 4/PCE
ROCK = PLAG-CPX SPARSELY MICROPHYRIC BASALT
FRESH ROCK;
5
Texture: INTERGRANULAR,SPARSELY MICROPHYRIC*
Phenocrysts- PLAGIOCLASE ( 1-5%)
Size(mm): TO 0.4
CLINOPYROXENE ( 1-5%)
Size(mm): TO 0.4
AUGITE*
Groundmass - PLAGIOCLASE
Size(mm): 0.03
PYROXENE
Size(mm): 0.03
MAGNETITE
Size(mm): 0.03
GLASS ( RARE%)
FRESH,INTERSTITIAL;
OLIVINE ( 0%)
Alteration - SMECTITE
Location: GROUNDMASS,
Location: INTERSTITIAL
RARE*
Vesicles -
Filling: SMEC,SILICA
SMEC RARE,(YELLOW,WEAKLY BIREFRINGENT)*
Leg : 37 Top/Bottom Interval(mm): 1000/ 0 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 227.50 Rock Type: IGNEOUS
Core: 4 Sample Midpoint(m) : 228.50 Sect/Pc #: 1/PCE 1
ROCK = PLAG-CPX SPARSELY MICROPHYRIC BASALT
SLIGHTLY ALTERED IN PARTS-OTHERWISE FRESH;
Texture: INTERGRANULAR, SPARSELY MICROPHYRIC,EQUIGRANULAR
GROUNDMASS: INTERSTITIAL*
Phenocrysts- PLAGIOCLASE ( <1%)
Size(mm): <0.5
FRESH;
PYROXENE ( <1%)
Size(mm): <0.5
AUGITE,FRESH*
Groundmass - PLAGIOCLASE
Size(mm): 0.1-1
PYROXENE
Size(mm): 0.1-1
OPAQUE MINERALS
Size(mm): 0.1-1
INCLUDES MAGN+ILMENITE*
Alteration - SMECTITE
Location: GROUNDMASS,
Vesicles -
Size(mm): 0.1
Percent: 1-2
Filling: SMECTITE,
Location: INTERSTITIAL
Filling: CHLOROPHAEITE
SMEC NEXT TO WALL-THEN CHLOROPHAEITE*
Leg : 37 Top/Bottom Interval(mm): 180/ 0 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 284.50 Rock Type: IGNEOUS
Core: 6 Sample Midpoint(m) : 284.68 Sect/Pc #: 1/PCE 2
ROCK = PLAG SPARSELY PHYRIC BASALT;
Texture: INTERGRANULAR,INTERSERTAL,SPARSELY PORPHYRITIC
GROUNDMASS: INTERSTITIAL*
Phenocrysts- PLAGIOCLASE ( <1%)
Size(mm): >0.5
FRESH*
Groundmass - OLIVINE
Size(mm): 0.1-1
RARE;
PLAGIOCLASE
Size(mm): 0.1-1
PYROXENE
Size(mm): 0.1-1
OPAQUE MINERALS
Size(mm): 0.1-1
INCLUDES MAGN+ILMENITE;
GLASS
ALTERED*
Alteration - SMECTITE
Location: GROUNDMASS, Replacing: GLASS
Location: INTERSTITIAL
CHLOROPHAEITE
Location: GROUNDMASS Replacing: GLASS
CARBONATE
Location: VEINS
Vesicles -
Size(mm): <0.5
Percent: 2
Filling: CARBS
Leg : 37 Top/Bottom Interval(mm): 770/ 0 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 284.50 Rock Type: IGNEOUS
Core: 6 Sample Midpoint(m) : 285.27 Sect/Pc #: 1/PCE 9C
ROCK = PLAG-CPX SPARSELY PHYRIC BASALT;
Texture: SPARSELY PORPHYRITIC*
Phenocrysts- PLAGIOCLASE ( <1%)
Size(mm): >0.5
FRESH, OCCASIONAL CLUSTERS OF MICROPHENOS;
CLINOPYROXENE ( <1%)
Size(mm): <0.5
AUGITE,FRESH,OCCASIONAL CLUSTERS OF MICROPHENOS*
Groundmass - PLAGIOCLASE
Size(mm): 0.1-1
PYROXENE
Size(mm): 0.1-1
OPAQUE MINERALS
Size(mm): 0.1-1
INCLUDES MAGN+ILMENITE;
OLIVINE ( 0%)
Alteration - CHLOROPHAEITE
Location: GROUNDMASS
Vesicles -
Size(mm): 1-2
Percent: 1-2
Filling: SMEC,CHLOROPH
Leg : 37 Top/Bottom Interval(mm): 1220/ 0 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 284.50 Rock Type: IGNEOUS
Core: 6 Sample Midpoint(m) : 287.22 Sect/Pc #: 2/
ROCK = PLAG SPARSELY MICROPHYRIC BASALT
ROCK IS NEARLY APHYRIC;
Texture: SPARSELY MICROPHYRIC, INTERSTITIAL*
Phenocrysts- PLAGIOCLASE ( <1%)
Size(mm): <0.5
MICROPHENOS,FRESH*
Groundmass - OLIVINE
Size(mm): 0.1-1
PLAGIOCLASE
Size(mm): 0.1-1
PYROXENE
Size(mm): 0.1-1
Alteration - SMECTITE
Location: GROUNDMASS Replacing: GLASS,OL
CARBONATE
Location: GROUNDMASS Replacing: OL
CHLOROPHAEITE
Location: GROUNDMASS Replacing: GLASS
Vesicles -
Size(mm): 0.6
Percent: 8
Filling: SMEC,CHLOROPH,
Filling: FE.HYDRX
Leg : 37 Top/Bottom Interval(mm): 870/ 0 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 284.50 Rock Type: IGNEOUS
Core: 6 Sample Midpoint(m) : 288.37 Sect/Pc #: 3/PCE 10
ROCK = PLAG SPARSELY MICROPHYRIC BASALT
ROCK IS NEARLY APHYRIC,NOT MUCH ALTERED;
Texture: SUBOPHITIC,INTERGRANULAR,GROUNDMASS INTERSTITIAL
SPARSELY MICROPORPHYRIC,RELATIVELY COARSE-GRAINED
GROUNDMASS*
Phenocrysts- PLAGIOCLASE ( <1%)
Size(mm): <0.5
FRESH*
Groundmass - PLAGIOCLASE
Size(mm): 0.1-.4
PYROXENE
Size(mm): 0.1-.4
OPAQUE MINERALS
Size(mm): 0.1-.4
INCLUDES MAGN+ILMENITE;
GLASS
ALTERED;
OLIVINE ( 0%)
Alteration - SMECTITE
Location: GROUNDMASS, Replacing: GLASS
Location: INTERSTITIAL
Vesicles -
Size(mm): 0.5
Percent: 5
Filling: SMEC,SILICA
Filling: FE.HYDRX,HEMA
Leg : 37 Top/Bottom Interval(mm): 60/ 70 Describer: Fischer, J.
Hole: 332B Top of Core Depth(m) : 322.50 Rock Type: IGNEOUS
Core: 8 Sample Midpoint(m) : 322.57 Sect/Pc #: 1/PCE 1
ROCK = PLAG SPARSELY MICROPHYRIC BASALT;
Texture: VARIOLITIC,INTERSERTAL,MICROPHYRIC
TEX IS IRREGULAR,MUCH OF SLIDE CONSISTS OF 70%
PLAG + PYX + ALTERED GLASS AND 25% PATCHES OF
VARIOLITIC MATERIAL WITH ABUNDANT FINE-GRAINED
BROWNISH SHEAVES OF 0.01MM LONG OF FINE-GRAINED
OPAQUES + SMECTITES,THESE GRADE BY STEPS INTO A
FINE-GRAINED VARIOLITIC TEXTURE IN ONE CORNER OF
SLIDE,NO SPHERULITES OR GLASS WITHIN THE SECTION
ALTHOUGH OUTER ZONE MAY BE COALESCED SPHERULITES,
OUTER ZONE IS BANDED WITH COARSE-GRAINED BANDS AND
WITH WELL-ALIGNED MICROLITES*
Phenocrysts- PLAGIOCLASE ( <1%)
MICROPHENOS,FRESH*
Groundmass - PLAGIOCLASE
PYROXENE
OPAQUE MINERALS
SMECTITE
GLASS
ALTERED*
Alteration - SMECTITE
Replacing: GLASS
Vesicles -
Size(mm): 0.1-10.0
Percent: 5
Filling: SMEC,CHLOROPH,
Shape: ROUND,
Filling: CARB,ZEOLITE
Shape: IRREGULAR
THIN LININGS OF SMEC,CARB IS FINELY GRANULAR,
ZEOLITE IS RADIAL PRISMATIC-LOW BIREFRINGENCE-BOTH
(+) AND (-) ELONGATION-PROBABLY MESOLITE(?),GROWTH
SEQUENCE IS SMEC-THEN MESOLITE(POSSIBLY WITH SMEC)
-THEN CALCITE,ROUND VESICLES CHIEFLY 0.1-0.2CM BUT
ALSO UP TO 1.0CM,MANY IRREGULAR VESICLES AND VUGS
0.2-0.5MM OFTEN LINKED TOGETHER-CLOSE TO
DIKTYTAXITIC TEXTURE*
Leg : 37 Top/Bottom Interval(mm): 140/ 170 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 322.50 Rock Type: IGNEOUS
Core: 8 Sample Midpoint(m) : 322.66 Sect/Pc #: 1/PCE 2
ROCK = PLAG-OL PHYRIC BASALT;
Texture: VARIOLITIC,INTERGRANULAR,INTERSERTAL
PORPHYRITIC, GROUNDMASS: INTERSTITIAL,
ROCK IS VERY FRESH*
Phenocrysts- OLIVINE ( 1-5%)
Size(mm): >0.5
FRESH;
PLAGIOCLASE ( >5%)
Size(mm): >0.5
FRESH*
Groundmass - OLIVINE
Size(mm): 0.1-1
PLAGIOCLASE
Size(mm): 0.1-1
PYROXENE
Size(mm): 0.1-1
OPAQUE MINERALS
Size(mm): 0.1-1
INCLUDES MAGN+ILMENITE;
GLASS
ALTERED*
Alteration - SMECTITE
Location: GROUNDMASS, Replacing: GLASS
Location: INTERSTITIAL
FERROUS HYDROX MINS
Replacing: GLASS
Vesicles -
Size(mm): 0.3
Percent: 0.5
ALMOST NON-VESICULAR*
Leg : 37 Top/Bottom Interval(mm): 620/ 0 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 322.50 Rock Type: IGNEOUS
Core: 8 Sample Midpoint(m) : 323.12 Sect/Pc #: 1/PCE 8
ROCK = PLAG-OL PHYRIC BASALT;
Texture: INTERSTITIAL, PORPHYRITIC*
Phenocrysts- OLIVINE ( <1%)
Size(mm): >0.5
FRESH;
PLAGIOCLASE ( >5%)
Size(mm): >0.5
FRESH WITH SLIGHT ALTERATION,APPROX COMP AN60-65,
OCCASIONAL PHENOCRYST AGGREGATES*
Groundmass - OLIVINE
Size(mm): 0.1-1
PLAGIOCLASE
Size(mm): 0.1-1
PYROXENE
Size(mm): 0.1-1
OPAQUE MINERALS
Size(mm): 0.1-1
INCLUDES MAGN+ILMENITE*
Alteration - SMECTITE
Location: GROUNDMASS, Replacing: GLASS
Location: INTERSTITIAL
Vesicles -
Size(mm): TO 1
Percent: 8-10
Filling: SMEC,FE.HYDRX
Filling: CHLOROPH,CARB
Leg : 37 Top/Bottom Interval(mm): 750/ 0 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 322.50 Rock Type: IGNEOUS
Core: 8 Sample Midpoint(m) : 324.75 Sect/Pc #: 2/PCE 9
ROCK = PLAG PHYRIC BASALT
GROUNDMASS MODERATELY ALTERED;
Texture: VARIOLITIC,INTERGRANULAR,INTERSERTAL,PORPHYRITIC
GROUNDMASS: INTERSTITIAL*
Phenocrysts- PLAGIOCLASE ( >5%)
Size(mm): >0.5
APPROX COMP AN60-64,FRESH*
Groundmass - OLIVINE ( RARE%)
Size(mm): 0.1-1
PLAGIOCLASE
Size(mm): 0.1-1
PYROXENE
Size(mm): 0.1-1
OPAQUE MINERALS
Size(mm): 0.1-1
INCLUDES MAGN+ILMENITE;
GLASS
ALTERED*
Alteration - SMECTITE
Location: GROUNDMASS, Replacing: GLASS
Location: INTERSTITIAL
Vesicles -
Size(mm): 0.1
Percent: <1
Filling: SMEC,CHLOROPH
Leg : 37 Top/Bottom Interval(mm): 70/ 0 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 322.50 Rock Type: IGNEOUS
Core: 8 Sample Midpoint(m) : 325.57 Sect/Pc #: 3/PCE 1
ROCK = PLAG-OL PHYRIC BASALT;
Texture: INTERGRANULAR, PORPHYRITIC
GROUNDMASS: INTERSTITIAL*
Phenocrysts- OLIVINE ( 1-5%)
Size(mm): >0.5
FRESH;
PLAGIOCLASE ( >5%)
Size(mm): >0.5
FRESH, GLOMEROPHYRIC*
Groundmass - OLIVINE
Size(mm): 1-1.0
PLAGIOCLASE
Size(mm): 1-1.0
PYROXENE
Size(mm): 1-1.0
OPAQUE MINERALS
Size(mm): 1-0.1
INCLUDE MAGN+ILMENITE*
Alteration - SMECTITE
Location: GROUNDMASS,
Location: INTERSTITIAL
PATCHY SMECTITE ALTERATION OF GROUNDMASS SLIGHT*
Vesicles -
Size(mm): 1-4
Percent: 8-10
Filling: CARB,SMEC,
Filling: SILICA
MUCH CALCITE AND A LITTLE SILICA*
Leg : 37 Top/Bottom Interval(mm): 900/ 0 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 322.50 Rock Type: IGNEOUS
Core: 8 Sample Midpoint(m) : 326.40 Sect/Pc #: 3/PCE 11
ROCK = PLAG-CPX PHYRIC BASALT;
Texture: INTERGRANULAR,INTERSERTAL, PORPHYRITIC
GROUNDMASS: INTERSTITIAL*
Phenocrysts- PLAGIOCLASE ( >5%)
Size(mm): >0.5
HIGHLY PLAG PHYRIC,SOME PHENOS STRAINED,
GLOMEROPHYRIC,SLIGHTLY ALTERED;
CLINOPYROXENE ( 1-5%)
Size(mm): 1-2
AUGITE,OPHITIC TO PLAG LATHS*
Groundmass - OLIVINE
Size(mm): 0.1-1
PLAGIOCLASE
Size(mm): 0.1-1
PYROXENE
Size(mm): 0.1-1
OPAQUE MINERALS
Size(mm): 1-0.1
INCLUDES MAGN+ILMENITE;
GLASS
ALTERED*
Alteration - SMECTITE
Location: GROUNDMASS,
Location: INTERSTICES
SILICA
Location: GROUNDMASS,
Location: INTERSTICES
Vesicles -
Size(mm): TO 2
Percent: 1-2
Filling: SMEC,SILICA
MUCH FIBROUS SILICA IN VESICLES AND INTERSTICES*
Leg : 37 Top/Bottom Interval(mm): 180/ 210 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 332.00 Rock Type: IGNEOUS
Core: 9 Sample Midpoint(m) : 332.20 Sect/Pc #: 1/PCE 2
ROCK = PLAG-CPX PHYRIC BASALT
ROCK IS QUITE FRESH;
Texture: VARIOLITIC,INTERGRANULAR*
Phenocrysts- PLAGIOCLASE ( >5%)
Size(mm): >0.5
SOME PLAG PHENOS STRAINED AND ALTERED,FRESH;
CLINOPYROXENE ( <1%)
AUGITE,PLAG-CPX MICROGLOMEROPORPHYRITIC AGGREGATES,
IS LARGER AND OPTICALLY CONTINUOUS OPHITIC CPX WITH
MICROPHENOS,PLAG LATHS,CPX IS FRESH;
OLIVINE ( <<1%)
ONE HIGHLY CORRODED OL PHENO*
Groundmass - OLIVINE ( RARE%)
PLAGIOCLASE
PYROXENE
OPAQUE MINERALS
INCLUDES MAGN+ILMENITE;
GLASS
ALTERED*
Alteration - SMECTITE
Replacing: GLASS
FERROUS OXIDE
Replacing: GLASS
IDENTITY UNCERTAIN FOR SMEC AND FE.OX*
Vesicles -
Size(mm): 1-2
Percent: 3-5
Filling: SMECTITE
Leg : 37 Top/Bottom Interval(mm): 440/ 0 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 332.00 Rock Type: IGNEOUS
Core: 9 Sample Midpoint(m) : 333.94 Sect/Pc #: 2/PCE 6
ROCK = PLAG-CPX PHYRIC BASALT;
Texture: OPHITIC,INTERSERTAL, PORPHYRITIC
GROUNDMASS: INTERSTITIAL,COARSE DOLORITIC*
Phenocrysts- PLAGIOCLASE ( >5%)
Size(mm): >0.5
FRESH,SOMEWHAT ZONED AND CORRODED;
CLINOPYROXENE ( <1%)
OPHITIC, FRESH*
Groundmass - OLIVINE
PLAGIOCLASE
PYROXENE
OPAQUE MINERALS
INCLUDES MAGN+ILMENITE, ALSO SUBSTANTIAL FE AND TI
OXIDE PHASES;
GLASS
MOSTLY FRESH,SLIGHTLY ALTERED*
Alteration - SMECTITE
Location: GROUNDMASS, Replacing: GLASS
Location: INTERSTITIAL
CHLOROPHAEITE
Replacing: GLASS
FERROUS HYDROX MINS
Replacing: GLASS
Leg : 37 Top/Bottom Interval(mm): 450/ 470 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 332.00 Rock Type: IGNEOUS
Core: 9 Sample Midpoint(m) : 335.46 Sect/Pc #: 3/PCE 5
ROCK = PLAG-CPX PHYRIC BASALT
ROCK SIMILAR TO 9-2 #6,POSSIBLY INTRUSIVE;
Texture: OPHITIC,INTERGRANULAR,INTERSERTAL, PORPHYRITIC
GROUNDMASS IS DOLERITIC,INTERSTITIAL*
Phenocrysts- PLAGIOCLASE ( >5%)
FRESH,SLIGHTLY ALTERED;
CLINOPYROXENE ( <1%)
AUGITE,FRESH,OPHITIC, PLAG-CPX INTERGROWTH*
Groundmass - OLIVINE
Size(mm): >1
PLAGIOCLASE
Size(mm): >1
PYROXENE
Size(mm): >1
OPAQUE MINERALS
Size(mm): >1
INCLUDES MAGN+ILMENITE*
Alteration - SMECTITE
Location: GROUNDMASS, Replacing: GLASS
Location: INTERSTITIAL
CHALCEDONY
Replacing: GLASS
MASSIVE;
SILICA
Replacing: GLASS
HEMATITE
Replacing: GLASS
FERROUS HYDROX MINS
Replacing: GLASS
Vesicles -
Size(mm): 0.1
Percent: 0.5
Filling: SILICA
Leg : 37 Top/Bottom Interval(mm): 620/ 650 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 351.00 Rock Type: IGNEOUS
Core: 10 Sample Midpoint(m) : 351.64 Sect/Pc #: 1/PCE 8
ROCK = PLAG-OL PHYRIC BASALT;
Texture: VARIOLITIC,INTERGRANULAR, PORPHYRITIC
ROCK IS FRESH*
Phenocrysts- PLAGIOCLASE ( >5%)
Size(mm): 2-3
FRESH;
OLIVINE ( <1%)
Size(mm): 0.3-0.5
FRESH,MICROPHENOS*
Groundmass - OLIVINE
Size(mm): 0.1-1
PLAGIOCLASE
Size(mm): 0.1-1
PLAG SPHERULES IN GROUNDMASS;
PYROXENE
Size(mm): 0.1-1
OPAQUE MINERALS
Size(mm): 0.1-1
INCLUDES MAGN+ILMENITE;
GLASS
ALTERED*
Alteration - SMECTITE
Replacing: GLASS
FERROUS OXIDE
Replacing: GLASS
Vesicles -
Size(mm): 1
Percent: 2
Filling: SILICA
Leg : 37 Top/Bottom Interval(mm): 1330/1360 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 351.00 Rock Type: IGNEOUS
Core: 10 Sample Midpoint(m) : 352.35 Sect/Pc #: 1/PCE 16
ROCK = PLAG PHYRIC BASALT
SECTION IS THICK,SOME DEUTERIC ALTERATION;
Texture: INTERSERTAL, PORPHYRITIC,FINE-GRAINED*
GROUNDMASS: INTERSTITIAL*
Phenocrysts- PLAGIOCLASE ( 15%)
Size(mm): >0.5
SLIGHTLY ALTERED,PARTLY SERICITIZED;
Groundmass - OLIVINE
Size(mm): 0.03
PARTLY REPLACED BY CARBS,LARGE AMOUNT;
CLINOPYROXENE
POORLY CRYSTALLIZED INTERGROWTHS WITH PLAG;
GLASS
Alteration - CARBONATE
Location: GROUNDMASS, Replacing: OLIVINE
Location: INTERSTITIAL
SMECTITE ( 0%)
Vesicles -
Filling: CARB,SILICA
Leg : 37 Top/Bottom Interval(mm): 200/ 0 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 351.00 Rock Type: IGNEOUS
Core: 10 Sample Midpoint(m) : 354.20 Sect/Pc #: 3/PCE 6
ROCK = PLAG-OL-CPX PHYRIC BASALT;
Texture: OPHITIC-SUBOPHITIC,INTERGRANULAR, PORPHYRITIC,
DOLERITIC*
Phenocrysts- OLIVINE ( <1%)
FRESH,MICROPHENOS;
CLINOPYROXENE
FRESH, AUGITE MICROPHENOS;
PLAGIOCLASE ( >5%)
Size(mm): >0.5
FRESH*
Groundmass - OLIVINE
Size(mm): 0.1-1
PLAGIOCLASE
Size(mm): 0.1-1
CLINOPYROXENE
Size(mm): 0.1-1
CPX OPHITIC TO PLAG;
OPAQUE MINERALS
Size(mm): 0.1-1
INCLUDES MAGN+ILMENITE;
GLASS
INTERSTITIAL*
Alteration - SMECTITE
Location: GROUNDMASS Replacing: INTERSTITIAL GLASS
SILICA
Location: GROUNDMASS Replacing: INTERSTITIAL GLASS
SOME SILICA+FE.HYDRX ALTERATION IN GROUNDMASS AND
INTERSTITIAL GLASS;
FERROUS HYDROX MINS
Replacing: INTERSTITIAL GLASS
Vesicles -
Size(mm): 0.3
Percent: .1
Filling: SMEC,SILICA,
Filling: FE.HYDRX
Leg : 37 Top/Bottom Interval(mm): 390/ 420 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 360.50 Rock Type: IGNEOUS
Core: 11 Sample Midpoint(m) : 360.91 Sect/Pc #: 1/PCE 3A
ROCK = PLAG PHYRIC BASALT;
Texture: OPHITIC, PORPHYRITIC,DOLERITIC,OPHITIC
DOLERITIC OPHITIC GROUNDMASS,VERY ALTERED
GROUNDMASS*
Phenocrysts- PLAGIOCLASE ( >5%)
Size(mm): >0.5
FRESH,STRONGLY ZONED, OVERGROWTHS*
Groundmass - OLIVINE ( 0%)
NO OL SEEN IN GROUNDMASS;
PLAGIOCLASE
Size(mm): >1
PYROXENE
Size(mm): >1
OPAQUE MINERALS
INCLUDES MAGN+ILMENITE*
Alteration - SMECTITE
Replacing: GLASS
SILICA
Replacing: GLASS
INTRODUCTION OF SMEC+SILICA TO GROUNDMASS,
VERY ALTERED*
Vesicles -
Size(mm): 0.5
Percent: 2
Filling: SMEC,SILICA,
Filling: FE.OX
Leg : 37 Top/Bottom Interval(mm): 1100/1130 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 360.50 Rock Type: IGNEOUS
Core: 11 Sample Midpoint(m) : 363.12 Sect/Pc #: 2/PCE 6A
ROCK = PLAG PHYRIC BASALT;
Texture: OPHITIC,DOLERITIC
ALTERED GROUNDMASS, ROCK SIMILAR TO 11-1 #3A*
Phenocrysts- PLAGIOCLASE ( >5%)
Size(mm): >0.5
FRESH,ZONED,OVERGROWTHS*
Groundmass - OLIVINE ( 0%)
PLAGIOCLASE
Size(mm): >1
PYROXENE
Size(mm): >1
OPAQUE MINERALS
Size(mm): >1
INCLUDES MAGN+ILMENITE;
GLASS
ALTERED*
Alteration - SMECTITE
Location: GROUNDMASS, Replacing: GLASS
Location: INTERSTITIAL
SILICA
Location: GROUNDMASS, Replacing: GLASS
Location: INTERSTITIAL
Vesicles -
Filling: SMEC,SILICA
Leg : 37 Top/Bottom Interval(mm): 400/ 0 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 360.50 Rock Type: IGNEOUS
Core: 11 Sample Midpoint(m) : 363.90 Sect/Pc #: 3/PCE 3B
ROCK = PLAG PHYRIC BASALT;
Texture: OPHITIC,PORPHYRITIC,DOLERITIC
VERY SIMILAR TO 11-2 #6A,11-1 #3A,ALTERED
GROUNDMASS*
Phenocrysts- PLAGIOCLASE ( >5%)
Size(mm): >0.5
FRESH*
Groundmass - OLIVINE ( 0%)
PLAGIOCLASE
Size(mm): >1
PYROXENE
Size(mm): >1
OPAQUE MINERALS
Size(mm): >1
INCLUDES MAGN+ILMENITE;
GLASS
ALTERED*
Alteration - SILICA
Location: GROUNDMASS, Replacing: GLASS
Location: INTERSTITIAL
Vesicles -
Size(mm): 0.2
Percent: .1
Filling: SILICA
Leg : 37 Top/Bottom Interval(mm): 1050/1080 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 360.50 Rock Type: IGNEOUS
Core: 11 Sample Midpoint(m) : 366.07 Sect/Pc #: 4/PCE 4B
ROCK = PLAG PHYRIC BASALT;
MUCH GROUNDMASS ALTERATION;
Texture: SUBOPHITIC, PORPHYRITIC,MICRODOLERITIC*
Phenocrysts- PLAGIOCLASE ( >5%)
Size(mm): >0.5
FRESH*
Groundmass - OLIVINE ( 0%)
PLAGIOCLASE
PYROXENE
OPAQUE MINERALS
INCLUDES MAGN+ILMENITE*
Alteration - SILICA
Location: GROUNDMASS, Replacing: GLASS
Location: INTERSTITIAL,
Location: VEINS
FERROUS OXIDE
Location: VEINS
FINE VEIN TRACED BY FE.OX AND SILICA*
Vesicles -
Filling: SMECTITE
Leg : 37 Top/Bottom Interval(mm): 600/ 620 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 370.00 Rock Type: IGNEOUS
Core: 12 Sample Midpoint(m) : 370.61 Sect/Pc #: 1/PCE 8
ROCK = PLAG PHYRIC BASALT;
Texture: VARIOLITIC,INTERGRANULAR,INTERSERTAL,PORPHYRITIC
FINE-GRAINED GROUNDMASS*
Phenocrysts- PLAGIOCLASE ( >5%)
Size(mm): >0.5
FRESH*
Groundmass - OLIVINE
Size(mm): 0.1-1
PLAGIOCLASE
Size(mm): 0.1-1
PYROXENE
Size(mm): 0.1-1
OPAQUE MINERALS
Size(mm): 0.1-1
INCLUDES MAGN+ILMENITE;
GLASS
ALTERED*
Alteration - SMECTITE
Location: GROUNDMASS, Replacing: INTERSTITIAL GLASS
Vesicles -
Size(mm): 0.5
Percent: 4-6
Filling: SMEC,CARB
Leg : 37 Top/Bottom Interval(mm): 720/ 0 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 379.50 Rock Type: IGNEOUS
Core: 13 Sample Midpoint(m) : 380.22 Sect/Pc #: 1/PCE 6
ROCK = PLAG PHYRIC BASALT;
Texture: SUBOPHITIC,PORPHYRITIC
GROUNDMASS: INTERSTITIAL AND MODERATELY COARSE*
Phenocrysts- PLAGIOCLASE ( >5%)
Size(mm): >0.5
FRESH*
Groundmass - OLIVINE
Size(mm): 0.1-1
PLAGIOCLASE
Size(mm): 0.1-1
PYROXENE
Size(mm): 0.1-1
OPAQUE MINERALS
Size(mm): 0.1-1
INCLUDES MAGN+ILMENITE;
GLASS
ALTERED*
Alteration - CARBONATE
Location: GROUNDMASS, Replacing: OLIVINE
Location: INTERSTITIAL
Vesicles -
Size(mm): 1
Percent: 10-15
Filling: CARB
ROCK IS VERY VESICULAR*
Leg : 37 Top/Bottom Interval(mm): 1420/ 0 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 389.00 Rock Type: IGNEOUS
Core: 14 Sample Midpoint(m) : 390.42 Sect/Pc #: 1/PCE 16
ROCK = PLAG PHYRIC BASALT;
Texture: SUBOPHITIC,INTERGRANULAR,INTERSERTAL,PORPHYRITIC
GROUNDMASS: INTERSTITIAL,FINE-GRAINED*
Phenocrysts- PLAGIOCLASE ( >5%)
Size(mm): >0.5
FRESH, ZONING AND OVERGROWTH AGGREGATES*
Groundmass - OLIVINE
Size(mm): 0.1-1
OCCASIONALLY PRESENT;
PLAGIOCLASE
Size(mm): 0.1-1 Morphology: EQUIGRANULAR
PYROXENE
Size(mm): 0.1-1 Morphology: EQUIGRANULAR
FINE EQUIGRANULAR CPX+PLAG GROUNDMASS,MOSTLY
FRESH, SOME RELATIVELY LARGE (.4MM) OPHITIC CPX;
OPAQUE MINERALS
Size(mm): 0.1-1
INCLUDES MAGN+ILMENITE*
Alteration - SMECTITE
Location: GROUNDMASS, Replacing: GLASS
Location: INTERSTITIAL
CHLOROPHAEITE
Replacing: GLASS
FERROUS OXIDE
Replacing: GLASS
Vesicles -
Size(mm): 1-2
Percent: 10
Filling: CARBS,SILICA,
Filling: FE.OX
Leg : 37 Top/Bottom Interval(mm): 330/ 0 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 389.00 Rock Type: IGNEOUS
Core: 14 Sample Midpoint(m) : 390.83 Sect/Pc #: 2/PCE 3
ROCK = PLAG PHYRIC BASALT
GROUNDMASS ALTERATION IS SLIGHT;
Texture: SUBOPHITIC,INTERGRANULAR,PORPHYRITIC
GROUNDMASS: INTERSTITIAL*
Phenocrysts- PLAGIOCLASE ( >5%)
Size(mm): >0.5
FRESH,LARGE ZONED PLAG PHENOS*
Groundmass - OLIVINE ( 0%)
PLAGIOCLASE
Size(mm): 0.1-1
PYROXENE
Size(mm): 0.5
LARGE SUBOPHITIC AUGITE IN GROUNDMASS;
OPAQUE MINERALS
Size(mm): 0.1-1
INCLUDES MAGN+ILMENITE;
GLASS
ALTERED*
Alteration - SILICA
Location: GROUNDMASS,
Location: INTERSTITIAL
CHALCEDONY
Location: GROUNDMASS
Vesicles -
Filling: SMECTITE
Filling: SILICA
Leg : 37 Top/Bottom Interval(mm): 700/ 0 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 398.50 Rock Type: IGNEOUS
Core: 15 Sample Midpoint(m) : 399.20 Sect/Pc #: 1/PCE 7
ROCK = PLAG PHYRIC BASALT;
Texture: OPHITIC, PORPHYRITIC
GROUNDMASS: INTERSTITIAL*
Phenocrysts- PLAGIOCLASE
Size(mm): 2
FRESH,MANY PHENOS*
Groundmass - OLIVINE ( 0%)
PLAGIOCLASE
Size(mm): 0.1-1
PYROXENE
Size(mm): 0.1-1
OPHITIC CPX+PLAG;
OPAQUE MINERALS
Size(mm): 0.1-1
INCLUDES MAGN+ILMENITE;
GLASS
MUCH ALTERED*
Alteration - SILICA
Location: GROUNDMASS,
Location: INTERSTITIAL
Vesicles -
Filling: SILICA
Leg : 37 Top/Bottom Interval(mm): 830/ 850 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 398.50 Rock Type: IGNEOUS
Core: 15 Sample Midpoint(m) : 400.84 Sect/Pc #: 2/PCE 9
ROCK = PLAG-OL PHYRIC BASALT
VERY FRESH ROCK-ONE ALTERED ZONE WHERE
OLIVINE PHENO IS VEINED WITH SMECTITE;
Texture: VARIOLITIC, PORPHYRITIC,APHANITIC-
CRYPTOCRYSTALLINE
GROUNDMASS: INTERSTITIAL*
Phenocrysts- OLIVINE ( 1-5%)
Size(mm): >0.5
FRESH;
PLAGIOCLASE ( >5%)
FRESH,PLAG AND PLAG+OL GLOMEROPHYRIC AGGREGATES*
Groundmass - OLIVINE
Size(mm): 0.01-1
PLAGIOCLASE
Size(mm): 0.01-1
PYROXENE
Size(mm): 0.01-1
OPAQUE MINERALS
Size(mm): 0.01-1
INCLUDES MAGN+ILMENITE*
Alteration - SMECTITE
Replacing: OLIVINE
SMALL PATCH WHERE OL PHENOS ARE VEINED WITH SMEC*
Vesicles -
Size(mm): 2-5
Percent: TO 1
Filling: SMEC
Leg : 37 Top/Bottom Interval(mm): 310/ 330 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 408.00 Rock Type: IGNEOUS
Core: 16 Sample Midpoint(m) : 408.32 Sect/Pc #: 1/PCE 4
ROCK = OL MOD PHYRIC BASALT;
Texture: INTERGRANULAR,MODERATELY,PORPHYRITIC
GROUNDMASS: INTERSTITIAL*
Phenocrysts- OLIVINE ( 1-5%)
Size(mm): TO 2 Morphology: SUBHEDRAL
SLIGHTLY ALTERED OR CORRODED,MOSTLY FRESH*
Groundmass - OLIVINE
Size(mm): 0.1-1
PLAGIOCLASE
Size(mm): 0.1-1
PYROXENE
Size(mm): 0.1-1
OPAQUE MINERALS
Size(mm): 0.1-1
INCLUDES MAGN+ILMENITE;
SPINEL
PICOTITE, SMALL XTLS IN GROUNDMASS*
Alteration - SMECTITE
Location: GROUNDMASS, Replacing: GLASS
Location: INTERSTITIAL
CARBONATES
Location: VESICLES,
Location: VEINS
Vesicles -
Size(mm): <0.5
Percent: 5-10
Filling: CARBONATES
Leg : 37 Top/Bottom Interval(mm): 1120/ 0 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 408.00 Rock Type: IGNEOUS
Core: 16 Sample Midpoint(m) : 409.12 Sect/Pc #: 1/PCE 15
ROCK = OL PHYRIC BASALT
ROCK GENERALLY QUITE FRESH;
Texture: INTERGRANULAR,INTERSERTAL, PORPHYRITIC
GROUNDMASS: INTERSTITIAL*
Phenocrysts- OLIVINE ( >5%)
Size(mm): 0.5-1.5 Morphology: EUHEDRAL-SUBHEDRAL
SOME PHENOS EXTREMELY CORRODED,MOST FRESH*
Groundmass - OLIVINE
Size(mm): 0.1-1
PLAGIOCLASE
Size(mm): 0.1-1
PYROXENE
Size(mm): 0.1-1
OPAQUE MINERALS
Size(mm): 0.1-1
INCLUDES MAGN+ILMENITE*
Alteration - SMECTITE
Location: GROUNDMASS, Replacing: GLASS
Location: VEINS,
Location: INTERSTITIAL
CARBONATES
Location: VEINS
FINE CALCITE AND SMEC FILLED VEINS*
Vesicles -
Size(mm): <0.5
Percent: 2-5
Filling: SILICA
Leg : 37 Top/Bottom Interval(mm): 430/ 450 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 427.00 Rock Type: IGNEOUS
Core: 18 Sample Midpoint(m) : 427.44 Sect/Pc #: 1/PCE 5
ROCK = OL PHYRIC BASALT;
Texture: VARIOLITIC,INTERGRANULAR,INTERSERTAL,PORPHYRITIC
GROUNDMASS: INTERSTITIAL,VERY COARSE GRAINED*
Phenocrysts- OLIVINE ( >5%)
Size(mm): 4
FRESH,SOMETIMES RESORBED,MICROPHENOS,PICOTITE
INCLUSIONS;
SPINEL
PICOTITE, INCLUSIONS*
Groundmass - OLIVINE
Size(mm): 0.1-1
PLAGIOCLASE
Size(mm): 0.1-1
PYROXENE
Size(mm): 0.1-1
OPAQUE MINERALS
Size(mm): 0.1-1
INCLUDES MAGN+ILMENITE*
Alteration - SMECTITE
Location: GROUNDMASS, Replacing: GLASS
Location: VESICLES,
Location: INTERSTITIAL
CARBONATE
Location: VEINS
FINE CALCITE VEINING*
Vesicles -
Size(mm): 0.3
Percent: 4
Filling: SMEC
Leg : 37 Top/Bottom Interval(mm): 240/ 260 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 436.50 Rock Type: IGNEOUS
Core: 19 Sample Midpoint(m) : 436.75 Sect/Pc #: 1/PCE 3
ROCK = OL PHYRIC BASALT;
Texture: INTERGRANULAR,INTERSERTAL COARSELY PORPHYRITIC,
VARIOLITIC*
Phenocrysts- OLIVINE ( >5%)
Size(mm): 4
FRESH;
SPINEL
PICOTITE INCLUSIONS AND MICROPHENOS(0.03MM)*
Groundmass - OLIVINE
Size(mm): 0.1-1
PLAGIOCLASE
Size(mm): 0.1-1
PYROXENE
Size(mm): 0.1-1
OPAQUE MINERALS
Size(mm): 0.1-1
INCLUDES MAGN+ILMENITE*
Alteration - SMECTITE
Location: GROUNDMASS Replacing: GLASS
Vesicles -
Filling: SILICA
THIN SI02 LINING OF VESICLES*
Leg : 37 Top/Bottom Interval(mm): 750/ 780 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 436.50 Rock Type: IGNEOUS
Core: 19 Sample Midpoint(m) : 437.27 Sect/Pc #: 1/PCE 8A
ROCK = OL PHYRIC BASALT;
Texture: VARIOLITIC, PORPHYRITIC
STRIKINGLY QUENCHED GROUNDMASS*
Phenocrysts- OLIVINE ( >5%)
Size(mm): 0.5 Morphology: SUBHEDRAL
MOSTLY FRESH,SOME CORRODED, SMALL PHENOS;
SPINEL
PICOTITE PRESENT AS MINUTE ISOLATED GRAINS*
Groundmass - OLIVINE
Size(mm): 1-0.1
PLAGIOCLASE
Size(mm): 1-0.1
PYROXENE
Size(mm): 1-0.1
OPAQUE MINERALS
Size(mm): 1-0.1
INCLUDES MAGN+ILMENITE*
Alteration - SMECTITE
Location: GROUNDMASS Replacing: GLASS
Vesicles -
Size(mm): 0.3
Percent: 8.5
Location: LINING
Filling: SILICA
Leg : 37 Top/Bottom Interval(mm): 1000/ 0 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 436.50 Rock Type: IGNEOUS
Core: 19 Sample Midpoint(m) : 437.50 Sect/Pc #: 1/PCE 9A
ROCK = OL MOD MICROPHYRIC BASALT;
Texture: INTERSERTAL,VARIOLITIC, MOD MICROPHYRIC,
FINE-GRAINED
GROUNDMASS: INTERSTITIAL*
Phenocrysts- OLIVINE ( 5-10%)
FRESH,MICROPHENOS,SOME XTLS TO 2 MM*
Groundmass - OLIVINE
Size(mm): 0.02
PLAGIOCLASE
Size(mm): 0.02
PYROXENE
Size(mm): 0.02
MAGNETITE
Size(mm): 0.02
Alteration - SMECTITE
Location: GROUNDMASS, Replacing: GLASS
Location: VESICLES,
Location: INTERSTITIAL
CARBONATE
Location: VESICLES,VEIN
Vesicles -
Filling: SMEC,SILICA,
Filling: CARB
SMEC NEXT TO WALL THEN SILICA;
Leg : 37 Top/Bottom Interval(mm): 510/ 540 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 446.00 Rock Type: IGNEOUS
Core: 20 Sample Midpoint(m) : 446.53 Sect/Pc #: 1/PCE 1A
ROCK = OL SPARSELY MICROPHYRIC BASALT;
Texture: INTERGRANULAR,INTERSERTAL,MICROPHYRIC*
Phenocrysts- OLIVINE ( 1-5%)
Morphology: SUBHEDRAL
MICROPHENOS,SOME ALTERED,SOME >.5MM;
SPINEL
PICOTITE ASSOCIATED WITH OLIVINE*
Groundmass - OLIVINE
Size(mm): 0.1-1
PLAGIOCLASE
Size(mm): 0.1-1
PYROXENE
Size(mm): 0.1-1
OPAQUE MINERALS
Size(mm): 0.1-1
INCLUDES MAGN+ILMENITE;
GLASS
ALTERED*
Alteration - SMECTITE
Location: GROUNDMASS,
Location: VEINS,
Location: INTERSTITIAL
SILICA
Location: GROUNDMASS
FERROUS HYDROX MINS
Location: VESICLES,
Location: GROUNDMASS
CARBONATE
Location: GROUNDMASS
Vesicles -
Filling: SMEC,CHLOROPH,
Filling: CARBS
Leg : 37 Top/Bottom Interval(mm): 760/ 790 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 446.00 Rock Type: IGNEOUS
Core: 20 Sample Midpoint(m) : 446.78 Sect/Pc #: 1/PCE 3A
ROCK = OL SPARSELY PHYRIC BASALT
SIMILAR TO 20-1 #1A;
Texture: INTERGRANULAR,INTERSERTAL,MICROPHYRIC,PHYRIC*
Phenocrysts- OLIVINE
CORRODED MICROPHENOS;
SPINEL
PICOTITE*
Groundmass - OLIVINE
Size(mm): 0.1-1
PLAGIOCLASE
PYROXENE
OPAQUE MINERALS
INCLUDES MAGN+ILMENITE;
GLASS
ALTERED*
Alteration - SMECTITE
Location: GROUNDMASS,
Location: VEINS,
Location: VESICLES,
Location: INTERSTITIAL
FINE SMECTITE-FILLED VEINING;
SILICA
Location: GROUNDMASS,
Location: VESICLES
FERROUS HYDROX MINS
Location: VEINS
Vesicles -
Size(mm): 0.3
Percent: 5
Filling: SMEC,CARBS,
Filling: CHLOROPH,SILICA
Leg : 37 Top/Bottom Interval(mm): 40/ 70 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 465.00 Rock Type: IGNEOUS
Core: 22 Sample Midpoint(m) : 465.06 Sect/Pc #: 1/PCE 1A
ROCK = OL-SPINEL PHYRIC BASALT
PICRITE;
Texture: INTERGRANULAR, PORPHYRITIC*
Phenocrysts- OLIVINE ( 20%)
Size(mm): 0.5 Morphology: EUHEDRAL-SUBHEDRAL
FRESH WITH SOME ALTERATION,SOME CORRODED OR
RESORBED;
SPINEL ( 5%)
Size(mm): TO 1.2 Morphology: EUHEDRAL
PICOTITE,VERY ABUNDANT,WELL FORMED*
Groundmass - OLIVINE
Size(mm): 0.1-1
PLAGIOCLASE
Size(mm): 0.1-1
PYROXENE
Size(mm): 0.1-1
OPAQUE MINERALS
Size(mm): 0.1-1
INCLUDES MAGN+ILMENITE*
Vesicles -
Size(mm): 0.2
Percent: 3
Leg : 37 Top/Bottom Interval(mm): 770/ 800 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 465.00 Rock Type: IGNEOUS
Core: 22 Sample Midpoint(m) : 465.79 Sect/Pc #: 1/PCE 8A
ROCK = PLAG-OL PHYRIC BASALT
SLIGHTLY ALTERED WITH CALCITE VEINS;
Texture: GLOMEROPHYRIC, PORPHYRITIC*
Phenocrysts- PLAGIOCLASE ( >5%)
Size(mm): >0.5 Morphology: LATHS
FRESH;
OLIVINE ( >5%)
Size(mm): >0.5 Morphology: EUHEDRAL-SUBHEDRAL
FRESH, GLOMEROPHYRIC,OL PHENOS ADHERING TO PLAG
LATHS;
SPINEL
PICOTITE INCLUSIONS IN THE OLIVINE*
Groundmass - OLIVINE
PLAGIOCLASE
PYROXENE
OPAQUE MINERALS
INCLUDES MAGN+ILMENITE;
GLASS
ALTERED*
Alteration - SMECTITE
Location: VESICLES Replacing: GLASS
CALCITE
Location: VEINS
Vesicles -
Filling: SMECTITE
Leg : 37 Top/Bottom Interval(mm): 100/ 120 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 465.00 Rock Type: IGNEOUS
Core: 22 Sample Midpoint(m) : 466.61 Sect/Pc #: 2/PCE 1
ROCK = OL-PLAG-SPINEL MOD PHYRIC BASALT
CONSIDERABLE GROUNDMASS ALTERATION;
Texture: VARIOLITIC, MODERATELY PORPHYRITIC,GLOMEROPHYRIC
APHANITIC-CRYPTOCRYSTALLINE GROUNDMASS*
Phenocrysts- OLIVINE ( 1-5%)
Size(mm): >0.5
SLIGHTLY ALTERED;
PLAGIOCLASE ( 1-5%)
Size(mm): >0.5 Morphology: LATHS
SOMEWHAT ALTERED, GLOMEROPHYRIC TEXTURE WITH
OL+PLAG AND PLAG LATHS ALONE;
SPINEL
INCLUSIONS OF FRESH PICOTITE IN OLIVINE*
Groundmass - OLIVINE
Size(mm): 0.1-1
PLAGIOCLASE
Size(mm): 0.1-1
PYROXENE
Size(mm): 0.1-1
OPAQUE MINERALS
Size(mm): 0.1-1
INCLUDES MAGN+ILMENITE;
GLASS
ALTERED*
Alteration - SMECTITE
Location: GROUNDMASS, Replacing: PLAG,OL
Location: INTERSTITIAL,
Location: PHENOS
CALCITE
Location: GROUNDMASS,
Location: VEINS
INCIPIENT MICRO-BRECCIATION;
FERROUS HYDROX MINS
Location: GROUNDMASS
Vesicles -
Size(mm): 0.1-0.2
Percent: 1
Leg : 37 Top/Bottom Interval(mm): 360/ 390 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 465.00 Rock Type: IGNEOUS
Core: 22 Sample Midpoint(m) : 466.88 Sect/Pc #: 2/PCE 5A
ROCK = PLAG PHYRIC BASALT
ROCK IS VERY ALTERED;
Texture: INTERGRANULAR,VARIOLITIC, PORPHYRITIC*
Phenocrysts- PLAGIOCLASE ( >5%)
Size(mm): >0.5
FRESH,SLIGHTLY ALTERED*
Groundmass - OLIVINE
Size(mm): 1-0.1
PLAGIOCLASE
Size(mm): 1-0.1
PYROXENE
Size(mm): 1-0.1
OPAQUE MINERALS
Size(mm): 1-0.1
INCLUDES MAGN+ILMENITE;
GLASS
ALTERED*
Alteration - SMECTITE
Location: GROUNDMASS Replacing: GLASS
CARBONATES
Location: GROUNDMASS, Replacing: GLASS,OLIVINE
Location: VESICLES
MUCH CALCITE ESPECIALLY IN VEINS*
Vesicles -
Size(mm): TO 1
Percent: 4
Filling: CARBS
Leg : 37 Top/Bottom Interval(mm): 430/ 450 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 465.00 Rock Type: IGNEOUS
Core: 22 Sample Midpoint(m) : 466.94 Sect/Pc #: 2/PCE 5B
ROCK = PLAG-OL-SPINEL PHYRIC BASALT;
Texture: INTERGRANULAR,INTERSERTAL, PORPHYRITIC*
Phenocrysts- OLIVINE ( >5%)
Size(mm): >0.5
FRESH;
PLAGIOCLASE ( >5%)
Size(mm): >0.5
FRESH, GLOMEROPORPHYRITIC CLUSTERS OF OL + PLAG
COMPRISED OF OL CLUSTERS-PLAG CLUSTERS; AND LOOSE
CLUSTERS OF OL+PLAG;
SPINEL
PICOTITE INCLUSIONS IN OLIVINE*
Groundmass - OLIVINE
PLAGIOCLASE
PYROXENE
OPAQUE MINERALS
INCLUDES MAGN+ILMENITE;
GLASS
ALTERED*
Alteration - SMECTITE
Replacing: GLASS
CARBONATE
Location: VEINS
VERY FINE VEINS*
Vesicles -
Size(mm): .2
Percent: 1-2
Filling: SILICA
Leg : 37 Top/Bottom Interval(mm): 1090/1110 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 465.00 Rock Type: IGNEOUS
Core: 22 Sample Midpoint(m) : 467.60 Sect/Pc #: 2/PCE 12
ROCK = PLAG-OL PHYRIC BASALT;
Texture: PORPHYRITIC*
Phenocrysts- OLIVINE ( >5%)
Size(mm): >0.5 Morphology: EUHEDRAL
LARGE EUHEDRAL CORRODED OLIVINE,MOSTLY FRESH;
PLAGIOCLASE ( >5%)
Size(mm): >0.5
MOSTLY FRESH-LARGE (3X2MM) GLOMEROPORPHYRITIC
PLAG+OL CLUSTERS,SOMETIMES VERY COMPLEX WITH
MULTIPLE NUCLEI OF OLIVINE*
Alteration - SMECTITE
Location: GROUNDMASS Replacing: GLASS
CARBONATE
Location: VEINS,
Location: VESICLES
SILICA
Location: VESICLES
Vesicles -
Size(mm): 0.8
Percent: 3-5
Filling: CARBS,SILICA
Leg : 37 Top/Bottom Interval(mm): 30/ 50 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 465.00 Rock Type: IGNEOUS
Core: 22 Sample Midpoint(m) : 468.04 Sect/Pc #: 3/PCE 1
ROCK = PLAG-OL MODERATELY PHYRIC BASALT
VERY ALTERED-SPECIMEN RIDDLED WITH CARBONATE
VEINS;
Texture: PORPHYRITIC*
Phenocrysts- PLAGIOCLASE ( 1-5%)
ALTERED;
OLIVINE ( <1%)
ALTERED,SOME FRESH MICROPHENOS*
Groundmass - OLIVINE
Size(mm): .1-1
PLAGIOCLASE
Size(mm): .1-1
PYROXENE
Size(mm): .1-1
OPAQUE MINERALS
Size(mm): .1-1
INCLUDES MAGN+ILMENITE*
Alteration - SMECTITE
Location: INTERSTITIAL, Replacing: PHENOS,GLASS
Location: GROUNDMASS
CARBONATE
Location: GROUNDMASS
Vesicles -
Filling: CARB
Leg : 37 Top/Bottom Interval(mm): 400/ 430 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 465.00 Rock Type: IGNEOUS
Core: 22 Sample Midpoint(m) : 469.92 Sect/Pc #: 4/PCE 4
ROCK = PLAG-OL PHYRIC BASALT
GROUNDMASS IS FRESH;
Texture: INTERGRANULAR,INTERSERTAL,PORPHYRITIC,
GLOMEROPORPHYRITIC*
Phenocrysts- OLIVINE ( >5%)
Size(mm): >0.5
FRESH;
PLAGIOCLASE ( >5%)
Size(mm): >0.5
FRESH, GLOMEROPORPHYRITIC OL + PLAG*
Groundmass - OLIVINE
Size(mm): 0.1-1
PLAGIOCLASE
Size(mm): 0.1-1
PYROXENE
Size(mm): 0.1-1
OPAQUE MINERALS
Size(mm): 0.1-1
INCLUDES MAGN+ILMENITE;
GLASS
ALTERED*
Alteration - SILICA
Location: VESICLES
Vesicles -
Size(mm): 0.5
Percent: 2-3
Filling: SILICA
Leg : 37 Top/Bottom Interval(mm): 980/1000 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 465.00 Rock Type: IGNEOUS
Core: 22 Sample Midpoint(m) : 470.49 Sect/Pc #: 4/PCE 7A
ROCK = PLAG-OL PHYRIC BASALT
ROCK IS SOMEWHAT ALTERED;
Texture: GLOMEROPHYRIC,PORPHYRITIC*
Phenocrysts- OLIVINE ( >5%)
Size(mm): >0.5
FRESH;
PLAGIOCLASE ( >5%)
Size(mm): >0.5
FRESH;
SPINEL
PICOTITE MICROPHENOS AND INCLUSIONS IN OLIVINE*
Groundmass - OLIVINE
Size(mm): 0.1-1
PLAGIOCLASE
Size(mm): 0.1-1
PYROXENE
Size(mm): 0.1-1
OPAQUE MINERALS
Size(mm): 0.1-1
INCLUDES MAGN+ILMENITE*
Alteration - SMECTITE
Location: GROUNDMASS, Replacing: GLASS
Location: VESICLES
CARBONATE
Location: GROUNDMASS,
Location: VESICLES
FERROUS OXIDE
Location: VESICLES
Vesicles -
Size(mm): 0.4
Percent: 2
Filling: SMEC,CARB,
Filling: FE.OX
Leg : 37 Top/Bottom Interval(mm): 980/1000 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 465.00 Rock Type: IGNEOUS
Core: 22 Sample Midpoint(m) : 470.49 Sect/Pc #: 4/
ROCK = PLAG-OL PHYRIC BASALT
GLOMEROPORPHYRITIC UNIT,SEE DESCRIPTION TS #74-77,
OXIDIZED GROUNDMASS IN PART OF SLIDE*
Vesicles -
Filling: CARB
Leg : 37 Top/Bottom Interval(mm): 100/ 120 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 474.50 Rock Type: IGNEOUS
Core: 23 Sample Midpoint(m) : 474.61 Sect/Pc #: 1/PCE 2A
ROCK = PLAG-OL PHYRIC BASALT;
Texture: INTERGRANULAR-INTERSERTAL,GLOMEROPHYRIC,
Piece #: HYRITIC*
Phenocrysts- OLIVINE ( >5%)
Size(mm): >0.5
FRESH,PICOTITE INCLUSIONS;
PLAGIOCLASE ( >5%)
Size(mm): >0.5
FRESH;
SPINEL
PICOTITE INCLUSIONS IN THE OLIVINE*
Groundmass - OLIVINE
Size(mm): 0.1-1
PLAGIOCLASE
Size(mm): 0.1-1
PYROXENE
Size(mm): 0.1-1
OPAQUE MINERALS
Size(mm): 0.1-1
INCLUDES MAGN+ILMENITE;
GLASS
ALTERED*
Alteration - SMECTITE
Location: GROUNDMASS,
Location: INTERSTITIAL
SILICA
Location: VESICLES
Vesicles -
Size(mm): 0.4
Percent: 5
Filling: SILICA
Leg : 37 Top/Bottom Interval(mm): 100/ 120 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 474.50 Rock Type: IGNEOUS
Core: 23 Sample Midpoint(m) : 474.61 Sect/Pc #: 1/
ROCK = PLAG-OL PHYRIC BASALT
FRESH,GLOMEROPHYRIC UNIT,SEE DESCRIPTION TS #
74-77*
Leg : 37 Top/Bottom Interval(mm): 780/ 800 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 474.50 Rock Type: IGNEOUS
Core: 23 Sample Midpoint(m) : 475.29 Sect/Pc #: 1/PCE 6A
ROCK = PLAG-OL PHYRIC BASALT
ROCK IS CONSIDERABLY ALTERED;
Texture: INTERSERTAL, PORPHYRITIC, GLOMEROPHYRIC
GROUNDMASS: INTERSTITIAL,
NO GROUNDMASS MINERALS GIVEN,BUT 0.1-1 MM SIZE
RANGE IS GIVEN*
Phenocrysts- OLIVINE ( >5%)
Size(mm): >0.5
OLIVINE COULD BE SERPENTINIZED,MOSTLY ALTERED,
SOME FRESH,PICOTITE INCLUSIONS IN THE OLIVINE*
PLAGIOCLASE ( >5%)
FRESH*
Alteration - SMECTITE
Location: GROUNDMASS, Replacing: GLASS
Location: VEINS,
Location: INTERSTITIAL
MUCH SMECTITE IN GROUNDMASS;
CHLOROPHAEITE
Location: GROUNDMASS Replacing: GLASS
CARBONATE
Location: VEINS
FINE CALCITIC VEINING*
Leg : 37 Top/Bottom Interval(mm): 780/ 800 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 474.50 Rock Type: IGNEOUS
Core: 23 Sample Midpoint(m) : 475.29 Sect/Pc #: 1/
ROCK = PLAG-OL PHYRIC BASALT
GLOMEROPHYRIC UNIT,SEE DESCRIPTION TS #74-77,
SOME CARBONATE*
Leg : 37 Top/Bottom Interval(mm): 1010/1030 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 474.50 Rock Type: IGNEOUS
Core: 23 Sample Midpoint(m) : 475.52 Sect/Pc #: 1/PCE 7B
ROCK = PLAG-OL MOD PHYRIC BASALT;
Texture: INTERSERTAL, MODERATELY PORPHYRITIC*
Phenocrysts- OLIVINE ( 1-5%)
Size(mm): 0.5 Morphology: EUHEDRAL
EUHEDRAL RESORBED OLIVINE,MOSTLY ALTERED;
PLAGIOCLASE ( 1-5%)
Size(mm): >0.5 Morphology: LATHS
MOSTLY ALTERED;
SPINEL
PICOTITE INCLUSIONS IN OLIVINE*
Groundmass - OLIVINE
PLAGIOCLASE
PYROXENE
OPAQUE MINERALS
INCLUDES MAGN+ILMENITE;
GLASS
ALTERED*
Alteration - SMECTITE
Location: GROUNDMASS Replacing: GLASS
SILICA
Location: GROUNDMASS Replacing: GLASS
CARBONATE
Location: GROUNDMASS,
Location: VEINS
IN VICINITY OF CALCITE-BEARING VEINS GROUNDMASS
IS SEVERLEY ALTERED TO SMEC+FE.OX+FE.HYDRX,
OL CALCITE PSEUDOMORPHS;
FERROUS OXIDE
Location: GROUNDMASS Replacing: GLASS
FERROUS HYDROX MINS
Location: GROUNDMASS
Leg : 37 Top/Bottom Interval(mm): 390/ 450 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 474.50 Rock Type: IGNEOUS
Core: 23 Sample Midpoint(m) : 476.42 Sect/Pc #: 2/
ROCK = PLAG-OL PHYRIC BASALT
GLOMEROPHYRIC UNIT,SEE DESCRIPTION TS #74-77,
LARGER CLOTS,SOME SMECTITE*
Leg : 37 Top/Bottom Interval(mm): 810/ 830 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 474.50 Rock Type: IGNEOUS
Core: 23 Sample Midpoint(m) : 476.82 Sect/Pc #: 2/
ROCK = PLAG-OL PHYRIC BASALT
GLOMEROPHYRIC UNIT,SEE DESCRIPTION FOR TS #74-77,
LOTS OF CARBONATE*
Leg : 37 Top/Bottom Interval(mm): 40/ 60 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 474.50 Rock Type: IGNEOUS
Core: 23 Sample Midpoint(m) : 477.55 Sect/Pc #: 3/
ROCK = PLAG-OL PHYRIC BASALT
GLOMEROPHYRIC UNIT,SEE DESCRIPTION FOR TS #74-77,
THIS SECTION HAS MUCH MORE CARBONATE AND ONE
PART OF THE GROUNDMASS IS OXIDIZED MORE,SOME
REPLACEMENT OF OL BY SERPENTINE?*
Leg : 37 Top/Bottom Interval(mm): 250/ 270 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 474.50 Rock Type: IGNEOUS
Core: 23 Sample Midpoint(m) : 477.76 Sect/Pc #: 3/PCE 3
ROCK = PLAG-OL PHYRIC BASALT
ROCK IS FRESH;
Texture: INTERSERTAL,GLOMEROPHYRIC, PORPHYRITIC
GROUNDMASS IS FINE-GRAINED INTERSERTAL+QUENCHED*
Phenocrysts- OLIVINE ( >5%)
Size(mm): >0.5
FRESH,NO PICOTITE SEEN;
PLAGIOCLASE ( >5%)
Size(mm): >0.5
FRESH, GLOMEROPHYRIC CLOTS OF PLAG+OL, SINGLE
XTLS IN CLOTS UP TO 1MM;
SPINEL ( 0%)
Groundmass - OLIVINE
Size(mm): 0.02-0.03
PLAGIOCLASE
Size(mm): 0.02-0.03
PYROXENE
Size(mm): 0.02-0.03
OPAQUE MINERALS
Size(mm): 0.02-0.03
INCLUDES MAGN+ILMENITE;
GLASS
DEVITRIFIED TO FIBROUS CPX + OPAQUES (+ PLAG)*
Alteration - SMECTITE
MINOR AMOUNTS*
Vesicles -
Filling: SILICA,GLASS
Leg : 37 Top/Bottom Interval(mm): 1440/1460 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 474.50 Rock Type: IGNEOUS
Core: 23 Sample Midpoint(m) : 478.95 Sect/Pc #: 3/PCE 17
ROCK = PLAG-OL MICROPHYRIC BASALT
ROCK IS FRESH;
Texture: INTERSERTAL, MICROPHYRIC
FINE GRAINED GROUNDMASS*
Phenocrysts- OLIVINE ( >5%)
Size(mm): TO 0.5
PICOTITE ( 0%)
PLAGIOCLASE ( >5%)
Size(mm): TO 0.5
GLOMEROPHYRIC CLOTS OF PLAG+OL,SOME MAINLY OL OR
PLAG, MICROPHENOS*
Groundmass - OLIVINE
Size(mm): 0.02
ABUNDANT GROUNDMASS OLIVINE;
PLAGIOCLASE
Size(mm): 0.02
PYROXENE
Size(mm): 0.02
OPAQUE MINERALS
Size(mm): 0.02
INCLUDES MAGN+ILMENITE;
GLASS
DEVITRIFIED TO CPX+OP.MINS OBSCURING PLAG*
Alteration - SMECTITE
Location: VESICLES
CARBONATE ( RARE%)
Location: VESICLES
Vesicles -
Filling: SMEC,CARB,
Filling: GLASS
Leg : 37 Top/Bottom Interval(mm): 700/ 720 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 484.00 Rock Type: IGNEOUS
Core: 24 Sample Midpoint(m) : 484.71 Sect/Pc #: 1/
ROCK = PLAG-OL PHYRIC BASALT
FRESH ROCK;
Texture: INTERSERTAL,GLOMEROPHYRIC, PORPHYRITIC
GROUNDMASS: INTERSTITIAL*
Phenocrysts- OLIVINE ( >5%)
Size(mm): >0.5
FRESH;
PLAGIOCLASE ( >5%)
Size(mm): >0.5
FRESH,GLOMEROPHYRIC CLOTS OF PLAG+OL;
PICOTITE
Size(mm): 0
Groundmass - OLIVINE
FRESH;
GLASS
DEVITRIFIED*
Alteration - SILICA
Location: GROUNDMASS,
Location: VESICLES,
Location: INTERSTITIAL
Vesicles -
Filling: SILICA
Leg : 37 Top/Bottom Interval(mm): 940/ 960 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 484.00 Rock Type: IGNEOUS
Core: 24 Sample Midpoint(m) : 484.95 Sect/Pc #: 1/PCE 11
ROCK = PLAG-OL PHYRIC BASALT
ROCK IS FRESH;
Texture: INTERSERTAL,APHANITIC-CRYPTOCRYSTALLINE,PHYRIC
GROUNDMASS: INTERSTITIAL*
Phenocrysts- OLIVINE ( >5%)
Size(mm): >0.5
FRESH;
PLAGIOCLASE ( >5%)
Size(mm): >0.5
FRESH, GLOMEROPHYRIC CLOTS OF OL+PLAG IN FINE
GRAINED INTERSERTAL GROUNDMASS*
Groundmass - OLIVINE
Size(mm): 0.02
FRESH OL ABUNDANT IN THE GROUNDMASS;
GLASS
INTERSTITIAL,DEVITRIFIED TO A MASS OF CPX+OP.MINS;
PICOTITE ( 0%)
Alteration - SMECTITE
Location: GROUNDMASS,
Location: VESICLES,
Location: INTERSTITIAL
SILICA
Replacing: VESICLES
Vesicles -
Filling: SMEC,SILICA,
Filling: GLASS
Leg : 37 Top/Bottom Interval(mm): 880/ 900 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 484.00 Rock Type: IGNEOUS
Core: 24 Sample Midpoint(m) : 486.39 Sect/Pc #: 2/PCE 10
ROCK = OL-SPINEL MOD MICROPHYRIC BASALT
ROCK IS VERY FRESH;
Texture: VARIOLITIC,APHANITIC-CRYPTOCRYSTALLINE,
MODERATELY MICROPHYRIC*
Phenocrysts- OLIVINE ( >5%)
Size(mm): TO 0.4 Morphology: EUHEDRAL,SKELETAL
MICROPHENOS,ONE SKELETAL XTL = 1 MM,
GOOD FOR PROBING OL COMPOSITION;
SPINEL ( <1%)
Size(mm): 0.02-0.15
MICROPHENOS, INDIVIDUAL GRAINS,PICOTITE;
PLAGIOCLASE ( 0%)
Groundmass - PLAGIOCLASE
Morphology: SKELETAL
LONG;
CLINOPYROXENE
VERY FINE AND FIBROUS*
Alteration - SMECTITE
Location: VESICLES Replacing: GLASS
SILICA
Replacing: GLASS
Vesicles -
Filling: SMEC,SILICA
SMEC NEXT TO WALL-THEN SILICA*
Leg : 37 Top/Bottom Interval(mm): 770/ 790 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 493.50 Rock Type: IGNEOUS
Core: 25 Sample Midpoint(m) : 495.78 Sect/Pc #: 2/PCE 10
ROCK = PLAG-OL SPARSELY MICROPHYRIC BASALT;
Texture: INTERGRANULAR, SPARSELY MICROPHYRIC,VERY FINE
GRAINED*
Phenocrysts- OLIVINE ( <<1%)
PLAGIOCLASE ( <1%)
Groundmass - OLIVINE
Size(mm): 0.02
FINE GRAINED INTERGRANULAR GROUNDMASS IS MOSTLY
FRESH OL;
PLAGIOCLASE
Size(mm): 0.02
CLINOPYROXENE
Size(mm): 0.02
MAGNETITE
Size(mm): 0.02
SCATTERED MAGN;
GLASS
INTERSTITIAL GLASS REPLACED BY OXIDIZED SMEC*
Alteration - SMECTITE
Location: GROUNDMASS Replacing: INTERSTITIAL GLASS
YELLOW;
SERPENTINITE
Replacing: OL
CARBONATE
Location: GROUNDMASS
Vesicles -
Filling: SILICA
Leg : 37 Top/Bottom Interval(mm): 1280/1310 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 493.50 Rock Type: IGNEOUS
Core: 25 Sample Midpoint(m) : 497.80 Sect/Pc #: 3/PCE 18
ROCK = PLAG-OL MOD PHYRIC BASALT
Texture: INTERGRANULAR-SUBOPHITIC,MODERATELY PORPHYRITIC
GROUNDMASS IS COARSE-GRAINED*
Phenocrysts- OLIVINE ( 1-5%)
FRESH WITH SLIGHT RIMMING BY SERP;
PLAGIOCLASE ( 1-5%)
FRESH,OL+PLAG PHENOS INTERGROWN*
Groundmass - OLIVINE
Size(mm): 0.1-0.2
OL REPLACED BY CARB AND OXIDIZED SMEC (IDDINGS?)
AND SERP?*
Alteration - SMECTITE
Location: GROUNDMASS, Replacing: OL
Location: INTERSTITIAL
OXIDIZED;
CARBONATE
Location: GROUNDMASS, Replacing: OL
Location: VEINS
SERPENTINITE
Location: GROUNDMASS Replacing: OL
FIBROUS EXTINCTION,COLORLESS TO PALE BROWN,R.I.
CANADA BALSAM*
Leg : 37 Top/Bottom Interval(mm): 40/ 50 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 512.50 Rock Type: IGNEOUS
Core: 27 Sample Midpoint(m) : 514.05 Sect/Pc #: 2/PCE 1
ROCK = PLAG MOD PHYRIC BASALT;
Texture: MODERATELY PORPHYRITIC, INTERSERTAL,
FINE-GRAINED TO APHANITIC*
Phenocrysts- PLAGIOCLASE ( 1-5%)
Size(mm): TO 1.2
Groundmass - OLIVINE
PSUEDOMORPHED BY CARB?;
GLASS
ONE PATCH OF CRYPTOXLN DEVITRIFIED GLASS THROUGH
CENTER OF SLIDE, INTERSERTAL GLASS IS OXIDIZED
BUT PROBABLY OK FOR PROBE*
Alteration - CARBONATE
Location: GROUNDMASS, Replacing: OL
Location: VESICLES
MUCH CARB IN GROUNDMASS*
SMECTITE
Vesicles -
Filling: CARB
Leg : 37 Top/Bottom Interval(mm): 30/ 60 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 522.00 Rock Type: IGNEOUS
Core: 28 Sample Midpoint(m) : 523.55 Sect/Pc #: 2/PCE 1
ROCK = PLAG MOD PHYRIC BASALT;
Texture: INTERGRANULAR-INTERSERTAL,SUBOPHITIC,
MODERATELY PORPHYRITIC,FINE-GRAINED*
Phenocrysts- PLAGIOCLASE ( 1-5%)
Size(mm): TO 2
FRESH, PHENOS HAVE PROMINENT QUENCH TEXTURE
LARGER BLADES OF PLAG IN GROUNDMASS AND SOME
SUBOPHITIC GROWTH OF PLAG AND AUGITE;
Groundmass - OLIVINE
IF OL PRESENT,IT HAS BEEN REPLACED COMPLETELY BY
SERPENTINE+CARBONATES;
PLAGIOCLASE
PYROXENE
MAGNETITE
GLASS
INTERSTITIAL GLASS REPLACED BY SMEC AND SILICA*
Alteration - SERPENTINITE
Location: GROUNDMASS Replacing: OL
CARBONATES
Location: GROUNDMASS Replacing: OL
SMECTITE
Location: GROUNDMASS Replacing: GLASS
SILICA
Location: GROUNDMASS Replacing: GLASS
Leg : 37 Top/Bottom Interval(mm): 580/ 610 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 531.50 Rock Type: IGNEOUS
Core: 29 Sample Midpoint(m) : 532.10 Sect/Pc #: 1/PCE 5B
ROCK = OL PHYRIC BASALT;
Texture: INTERGRANULAR-SUBOPHITIC, PORPHYRITIC,
MEDIUM-GRAINED*
Phenocrysts- OLIVINE (10-15%)
Size(mm): TO 6 Morphology: SKELETAL
ORIGINALLY SKELETAL PHENOS,FRACTURES FILLED WITH
GROUNDMASS AND/OR CARBS*
Groundmass - OLIVINE
Size(mm): 0.1 Morphology: EUHEDRAL
ABUNDANT, RIMMED BY SMEC+SERP+IDDINGS;
PLAGIOCLASE
Size(mm): 0.1
PYROXENE
Size(mm): 0.1
MAGNETITE
Size(mm): 0.1
Alteration - SMECTITE
Location: GROUNDMASS, Replacing: OL
Location: INTERSTITIAL
NEARLY ISOTROPIC AND LIGHT GREEN (CHLOROPH?);
IDDINGSITE
Replacing: OL
CARBONATE
Replacing: OL
Vesicles -
Filling: SMEC,CARB,
Filling: SILICA,CHLOROPH
SMEC NEXT TO WALL-THEN CARB AND SILICA*
Leg : 37 Top/Bottom Interval(mm): 40/ 70 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 531.50 Rock Type: IGNEOUS
Core: 29 Sample Midpoint(m) : 533.06 Sect/Pc #: 2/PCE 1A
ROCK = OL MOD PHYRIC BASALT;
Texture: INTERGRANULAR,SUBOPHITIC,OPHITIC,PORPHYRITIC
GROUNDMASS IS INTERGRANULAR WITH PATCHES OF
COARSER SUBOPHITIC TEXTURE*
Phenocrysts- OLIVINE ( 5%)
Size(mm): >0.5
TWINNED, PARTLY REPLACED BY CARB;
SPINEL
PICOTITE INCLUSIONS IN THE OL*
Groundmass - OLIVINE
Size(mm): 0.01-1
ABUNDANT, PARTLY RIMMED AND REPLACED BY CARB+SERP+
IDDINGS;
PLAGIOCLASE
Size(mm): 0.01-1
PYROXENE
Size(mm): 0.01-1
MAGNETITE
Size(mm): 0.01-1
Alteration - CARBONATE
Location: GROUNDMASS, Replacing: OL
Location: VESICLES,
Location: VEINS
SERPENTINITE
Location: GROUNDMASS Replacing: OL
ID UNCERTAIN FOR SERP;
IDDINGSITE
Location: GROUNDMASS Replacing: OL
Vesicles -
Filling: CARB
Leg : 37 Top/Bottom Interval(mm): 510/ 530 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 541.00 Rock Type: IGNEOUS
Core: 30 Sample Midpoint(m) : 541.52 Sect/Pc #: 1/PCE 7
ROCK = OL MOD PHYRIC BASALT;
Texture: SUBOPHITIC, MODERATELY PORPHYRITIC
FAIRLY COARSE GROUNDMASS WITH SUBOPHITIC
INTERGROWTHS OF CPX+PLAG*
Phenocrysts- OLIVINE ( 1-5%)
Size(mm): TO 3
PARTLY REPLACED BY SERP,(SOMETIMES OXIDIZED) AND
SILICA?;
SPINEL
Size(mm): TO 0.3
PICOTITE MICROPHENOS*
Groundmass - OLIVINE
Size(mm): 0.1-0.2
ABUNDANT, REPLACED LIKE PHENOS WITH MORE IDDINGS;
PLAGIOCLASE
CLINOPYROXENE
SUBOPHITIC INTERGROWTHS OF CPX + PLAG*
Alteration - SMECTITE
Location: VESICLES Replacing: OL
CARBONATES
Location: VESICLES Replacing: OL
IDDINGSITE
Location: VESICLES, Replacing: OL
Location: GROUNDMASS
SILICA
Location: VESICLES Replacing: OL
MAY BE REPLACING OL PHENOS;
SERPENTINITE
Replacing: OL
SOMETIMES OXIDIZED,MATS*
Vesicles -
Filling: SMEC,CARBS,
Filling: SILICA
SILICA NEXT TO WALL-THEN CARBONATE*
Leg : 37 Top/Bottom Interval(mm): 340/ 360 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 541.00 Rock Type: IGNEOUS
Core: 30 Sample Midpoint(m) : 542.85 Sect/Pc #: 2/PCE 3
ROCK = PLAG MOD PHYRIC BASALT;
Texture: INTERGRANULA-VARIOLITIC, MODERATELY PORPHYRITIC,
FINE-GRAINED,QUENCH-TYPE GROUNDMASS*
Phenocrysts- PLAGIOCLASE ( 5%)
Size(mm): TO 1
FRESH*
Groundmass - OLIVINE
REPLACED BY CARB;
PLAGIOCLASE
PYROXENE
GLASS
FRESH*
Alteration - SMECTITE
Location: GROUNDMASS,
Location: VESICLES,
Location: INTERSTITIAL
CARBONATE
Location: GROUNDMASS, Replacing: OLIVINE
Location: VESICLES
ABUNDANT GROUNDMASS CARB*
Vesicles -
Filling: SMEC,CARB,
Filling: GLASS
GLASS NEXT TO WALL-THEN CARB*
Leg : 37 Top/Bottom Interval(mm): 730/ 760 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 550.50 Rock Type: IGNEOUS
Core: 31 Sample Midpoint(m) : 551.24 Sect/Pc #: 1/PCE 4
ROCK = PLAG SPARSELY PHYRIC BASALT;
Texture: INTERGRANULAR,INTERSERTAL,VARIOLITIC, SPARSELY
Piece #: HYRITIC,QUENCH*
Phenocrysts- PLAGIOCLASE ( 1-5%)
Size(mm): TO 1
FRESH;
CLINOPYROXENE ( <1%)
ICD REPORTS GREEN AUGITE*
Groundmass - OLIVINE
Size(mm): 0.1-1
PLAGIOCLASE
Size(mm): 0.1-1
PYROXENE
Size(mm): 0.1-1
OPAQUE MINERALS
Size(mm): 0.1-1
INCLUDES MAGN+ILMENITE
GLASS
SOME GROUNDMASS GLASS ALTERATION*
Alteration - SMECTITE
Location: GROUNDMASS, Replacing: GLASS
Location: VESICLES,
Location: INTERSTITIAL
CARBONATE
Location: VESICLES
ALL THE CARB PRESENT IS IN THE VESICLES;
SERPENTINITE
Location: GROUNDMASS Replacing: OLIVINE
Vesicles -
Size(mm): 0.6
Percent: 2
Filling: SMEC,CARB
SMEC NEXT TO WALL,VESICLES FILLED WITH CALCITE*
Leg : 37 Top/Bottom Interval(mm): 270/ 300 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 560.00 Rock Type: IGNEOUS
Core: 32 Sample Midpoint(m) : 560.28 Sect/Pc #: 1/PCE 3B
ROCK = PLAG SPARSELY MICROPHYRIC BASALT;
Texture: VARIOLITIC,SPARSELY MICROPHYRIC,QUENCHED
GROUNDMASS*
Phenocrysts- PLAGIOCLASE ( 1-5%)
Size(mm): TO 0.5
SLIGHTLY SERICITIZED*
Groundmass - OLIVINE
OL PSEUDOMORPHS WITH CARB, SOME FRESH;
PLAGIOCLASE
LONG FIBROUS PLAG XTLS ARE MODERATELY WELL
ALIGNED IN A FIBROUS MAT OF PLAG+CPX;
CLINOPYROXENE
Alteration - CARBONATE
Location: VESICLES, Replacing: OLIVINE
Location: GROUNDMASS
Vesicles -
Filling: CARB,SILICA
Leg : 37 Top/Bottom Interval(mm): 1130/1160 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 560.00 Rock Type: IGNEOUS
Core: 32 Sample Midpoint(m) : 561.15 Sect/Pc #: 1/PCE 15
ROCK = PLAG-OL MOD MICROPHYRIC BASALT;
Texture: INTERSERTAL, MODERATELY MICROPHYRIC,
FINE-GRAINED*
Phenocrysts- OLIVINE ( <1%)
Size(mm): TO 0.4
COMPLETELY PSEUDOMORPHED BY RED-BROWN IDDINGS AND
HEMATITE(?),MICROPHENOS,RARE,ROUNDED,IDENTITY
UNCERTAIN FOR OLIVINE;
PLAGIOCLASE ( 1-5%)
MICROPHENOS,SOME ALTERATION TO SERICITE*
Groundmass - OLIVINE
SOME REPLACED BY CARBS-SERP-SMEC-IDDINGS;
PLAGIOCLASE
CLINOPYROXENE
WAVY EXTINCTION INTERGROWN WITH SOME PLAG
MICROPHENOS;
OPAQUE MINERALS
INCLUDES MAGN+ILMENITE,IDENTITY UNCERTAIN FOR IL;
GLASS
MOSTLY REPLACED BY SMEC, A FEW OXIDIZED GLASS
PATCHES REMAIN*
Alteration - SMECTITE
Replacing: GLASS,OL,
CARBONATE
Replacing: OL
SERPENTINITE
Replacing: OL
IDDINGSITE
Replacing: OL
Vesicles -
Filling: SMEC,CARB,
Filling: SILICA
Leg : 37 Top/Bottom Interval(mm): 50/ 80 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 569.50 Rock Type: IGNEOUS
Core: 33 Sample Midpoint(m) : 569.57 Sect/Pc #: 1/PCE 1
ROCK = APHYRIC BASALT;
Texture: APHYRIC,INTERSTITIAL*
Groundmass - OLIVINE
TINY OL IN GROUNDMASS,MOSTLY FRESH;
PLAGIOCLASE
PYROXENE
0.1 MM CLUMPS OF CPX AND PLAG SURROUNDED BY MATS
OF FIBROUS CPX INTERGROWN WITH PLAG*
Alteration - SMECTITE
Location: GROUNDMASS,
Location: VESICLES,
Location: INTERSTITIAL
ID UNCERTAIN FOR VESICLES,YELLOW ISOTROPIC MIN;
CHLORITE
Location: GROUNDMASS,
Location: VESICLES
ID UNCERTAIN FOR VESICLES;
CARBONATE
Location: GROUNDMASS,
Location: VESICLES
Vesicles -
Filling: SMEC,CHLORITE,
Size(mm): TO 3
Filling: CARB, GLASS,
GLASS NEXT TO WALL-THEN SMEC-THEN CARB,
OTHER VESICLES FILLED WITH GREEN NON-PLEOCHROIC
PATCHES OF OXIDIZED GLASS*
Leg : 37 Top/Bottom Interval(mm): 1000/1030 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 569.50 Rock Type: IGNEOUS
Core: 33 Sample Midpoint(m) : 570.52 Sect/Pc #: 1/PCE 10G
ROCK = APHYRIC BASALT;
Texture: SUBOPHITIC-INTERSERTAL,APHYRIC,MEDIUM-GRAINED
INTERSTITIAL GROUNDMASS, ROCK IS GRUNGY
COMPARED TO OTHERS FROM THIS HOLE*
Groundmass - OLIVINE ( TR%)
Size(mm): 0.1
ONE SERPENTINE PSUEDOMORPH OF OL SEEN;
PLAGIOCLASE
Size(mm): 0.1
PYROXENE
Size(mm): 0.1
MAGNETITE
Size(mm): 0.1
GLASS
OXIDIZED AND/OR REPLACED BY CARBONATES + CLAY*
Alteration - CARBONATE
Location: GROUNDMASS, Replacing: GLASS
Location: VESICLES,
Location: INTERSTITIAL
FORMS IN VESICLES AND INTERSTICES;
SERPENTINITE
Replacing: OL
Vesicles -
Filling: CARB
Leg : 37 Top/Bottom Interval(mm): 770/ 800 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 569.50 Rock Type: IGNEOUS
Core: 33 Sample Midpoint(m) : 571.78 Sect/Pc #: 2/PCE 7
ROCK = APHYRIC BASALT;
Texture: SUBOPHITIC,INTERGRANULAR,INTERSERTAL,APHYRIC*
Groundmass - PLAGIOCLASE
PYROXENE
ILMENITE
MAGNETITE
GLASS
ALTERED,OXIDIZED AND REPLACED BY SMECTITE + CARB;
OLIVINE ( 0%)
Alteration - FERROUS HYDROX MINS
Location: GROUNDMASS
SMECTITE
Location: VEINS Replacing: GLASS
CHLOROPHAEITE
Replacing: GLASS
CARBONATE
Location: VEINS,
Location: VESICLES
CALCITE
Location: VEINS,
Location: VESICLES
Vesicles -
Size(mm): 0.2
Percent: .2
Filling: CALCITE,CARB,
Filling: CHLOROPH
CHLOROPH NEXT TO WALL-THEN CARB*
Leg : 37 Top/Bottom Interval(mm): 110/ 140 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 569.50 Rock Type: IGNEOUS
Core: 33 Sample Midpoint(m) : 572.63 Sect/Pc #: 3/PCE 2
ROCK = SPARSELY OLIVINE PHYRIC BASALT
GROUNDMASS ALTERED;
Texture: INTERGRANULAR-APHANITIC-INTERSERTAL*
Phenocrysts- OLIVINE ( >5%)
Size(mm): TO 0.2
OL PHENOS + MICROPHENOS HIGHLY ALTERED;
PICOTITE
Size(mm): 0.4
MICROPHENOS ARE COMMON*
Alteration - CARBONATE
Location: VEINS,
Location: GROUNDMASS,
Location: VESICLES
CALCITE
Location: VEINS,
Location: VESICLES
Vesicles -
Size(mm): 0.1-0.2
Percent: 1-2
Filling: CARB,CALCITE
Leg : 37 Top/Bottom Interval(mm): 450/ 480 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 579.00 Rock Type: IGNEOUS
Core: 34 Sample Midpoint(m) : 579.47 Sect/Pc #: 1/PCE 4
ROCK = PLAGIOCLASE SPARSELY PHYRIC BASALT;
Texture: INTERSERTAL,FINE-GRAINED*
Phenocrysts- PLAGIOCLASE ( 1-5%)
Size(mm): TO 3.0
A FEW CLUMPS OF INTERGROWN PLAG-CPX IN A FINER
MAT OF FIBROUS CPX CRYSTALLIZED FROM GLASS*
Groundmass - PLAGIOCLASE
CLINOPYROXENE
MAGNETITE
OLIVINE
COMPLETELY REPLACED BY CARB*
Alteration - SERICITE
Replacing: PLAG
CARBONATE
Replacing: OLIVINE
Vesicles -
Filling: CARB,GLASS
VESICLES WITH CARB CENTERS AND GLASS RIMS*
Leg : 37 Top/Bottom Interval(mm): 1290/1320 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 579.00 Rock Type: IGNEOUS
Core: 34 Sample Midpoint(m) : 580.31 Sect/Pc #: 1/PCE 13B
ROCK = OLIVINE SPARSELY MICROPHYRIC BASALT;
Texture: INTERSERTAL*
Phenocrysts- OLIVINE ( 1-5%)
Size(mm): TO 0.4
FRESH,SMALL SPARSE OL MICROPHENOS GRADING INTO
SMALLER ABUNDANT GROUNDMASS OLIVINE,ALTERED PARTLY
TO SERPENTINE + SAPONITE*
Groundmass - OLIVINE
Size(mm): 0.01-0.1
ALTERED ALONG RIMS+CRACKS TO FIBROUS YELLOW-BROWN
SIMILAR TO SOME OF THE INTERSERTAL REPLACEMENT;
PLAGIOCLASE
LONG PLAG INTERGROWTHS WITH CPX IN A MATRIX OF
MORE POORLY CRYSTALLIZED CPX + PLAG + ALTERATION
PRODUCTS;
CLINOPYROXENE
IN INTERGROWTHS WITH PLAG,CPX IS MORE POORLY
CRYSTALLIZED IN THE MATRIX*
Alteration - SMECTITE
Location: GROUNDMASS
CARBONATE
Location: GROUNDMASS
SERPENTINITE
Replacing: OL
SAPONITE
Replacing: OL
OL ALSO ALTERED TO A FIBROUS YELLOW-BROWN
MATERIAL ALONG RIMS AND CRACKS*
Vesicles -
Filling: CARB
Leg : 37 Top/Bottom Interval(mm): 150/ 180 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 588.50 Rock Type: IGNEOUS
Core: 35 Sample Midpoint(m) : 588.67 Sect/Pc #: 1/PCE 2
ROCK = OLIVINE PHYRIC BASALT
VERY COARSELY PHYRIC;
Texture: VARIOLITIC,INTERGRANULAR*
Phenocrysts- OLIVINE ( 20%)
Size(mm): TO 4.0
SOME FRESH AND SOME ALTERED,SINGLE XTLS ARE
EMBAYED BY GROUNDMASS AND HAVE SOME ALTERATION
ALONG CRACKS AND EMBAYMENT TO CARB + CLAY.MINS*
Groundmass - PLAGIOCLASE ( <5%)
Size(mm): TO 1.0
COARSE PLAG LATHS SET IN A FINER MATRIX,ALSO IN
VARIOLITIC SHEATHS WITH CPX;
CLINOPYROXENE
INTERSTITIAL POORLY CRYSTALIZED CPX,CPX IN SOME
VARIOLITIC SHEATHS WITH PLAG;
OLIVINE
FRESH;
MAGNETITE
Alteration - SMECTITE
Replacing: GLASS
CARBONATE
Replacing: GLASS
Vesicles -
Filling: CARB,SMEC
Leg : 37 Top/Bottom Interval(mm): 660/ 690 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 588.50 Rock Type: IGNEOUS
Core: 35 Sample Midpoint(m) : 590.67 Sect/Pc #: 2/PCE 13
ROCK = OLIVINE PHYRIC BASALT
VERY SIMILAR TO 35-3, PCE 15 - PICOTITE MORE
ABUNDANT - OL FRESHER;
Texture: INTERGRANULAR,GLASSY*
Phenocrysts- OLIVINE ( >5%)
OL SHOWS FAINT STRAIN BONDING,FRESH;
PICOTITE
Size(mm): TO 0.8 Morphology: EUHEDRAL
FRESH,ABUNDANT,MICROPHENOS*
Groundmass - GLASS
ALTERED;
OLIVINE
PLAGIOCLASE
PYROXENE
ILMENITE
MAGNETITE
Alteration - SMECTITE
Location: INTERSTITIAL
Leg : 37 Top/Bottom Interval(mm): 690/ 720 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 588.50 Rock Type: IGNEOUS
Core: 35 Sample Midpoint(m) : 592.21 Sect/Pc #: 3/PCE 15
ROCK = OLIVINE PHYRIC BASALT;
Texture: INTERGRANULAR
FINE APHANITIC MATRIX*
Phenocrysts- OLIVINE ( >5%)
Size(mm): >0.5
LARGE OL PHENOCRYSTS(4.0MM),OL VERY ALTERED TO
IDDINGSITE + SERPENTINE + CALCITE;
PICOTITE
Groundmass - PLAGIOCLASE
Size(mm): >1.0 Morphology: LATHS
COARSE-GRAINED PLAG LATHS,SHIPBOARD FORM GIVES TWO
SIZES FOR GROUNDMASS XTLS AND IT IS NOT CERTAIN
WHICH IS FOR THE PLAG LATHS;
OLIVINE
Size(mm): 0.1-1.0
PYROXENE
Size(mm): 0.1-1.0
ILMENITE
MAGNETITE
Alteration - SMECTITE
Replacing: GLASS
CARBONATE
Location: VEIN Replacing: GLASS,OLIVINE PHENOS
THICK CARB-FILLED VEINING;
IDDINGSITE
Replacing: OL
SERPENTINITE
Replacing: OL
NO VESICLES,POSSIBLY INTRUSIVE*
Leg : 37 Top/Bottom Interval(mm): 60/ 80 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 598.00 Rock Type: IGNEOUS
Core: 36 Sample Midpoint(m) : 598.07 Sect/Pc #: 1/PCE 1
ROCK = PLAGIOCLASE-OLIVINE PHYRIC BASALT;
COARSELY PLAG-OL PHYRIC;
Texture: INTERGRANULAR,INTERSERTAL,GLASSY*
Phenocrysts- PLAGIOCLASE ( >5%)
Size(mm): TO 2.0
FRESH AND ALTERED;
OLIVINE ( 1-5%)
Size(mm): TO 1.0 Morphology: EUHEDRAL
ALTERED;
PICOTITE
Size(mm): TO 0.2 Morphology: EUHEDRAL
Groundmass - OLIVINE
Size(mm): 0.1-1.0
PLAGIOCLASE
Size(mm): 0.1-1.0
PYROXENE
Size(mm): 0.1-1.0
ILMENITE
MAGNETITE
GLASS
ALTERED;
Alteration - SMECTITE
Location: INTERSTITIAL Replacing: GROUNDMASS
SMECTITE
Replacing: GLASS
CARBONATE
Replacing: OL
SERPENTINITE
Replacing: OL
Vesicles -
Filling: CARB,SILICA
SILICA NEXT TO WALL-THEN CARB*
Leg : 37 Top/Bottom Interval(mm): 40/ 60 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 598.00 Rock Type: IGNEOUS
Core: 36 Sample Midpoint(m) : 601.05 Sect/Pc #: 3/
ROCK = PLAGIOCLASE PHYRIC BASALT
MODERATELY ALTERED ROCK;
Texture: VARIOLITIC,PORPHYRITIC
APHANITIC-CRYPTOCRYSTALLINE GROUNDMASS*
Phenocrysts- PLAGIOCLASE ( 15%)
Size(mm): TO 2.5
PLAG PHENOS ARE ALTERED TO SERICITE ALONG CLEAVAGE
PLANES WHICH GIVES AN APPEARANCE OF EXSOLUTION;
OLIVINE ( <1%)
Size(mm): 1.0X1.0
RARE,ALTERED TO CALCITE + SERPENTINE*
Groundmass - OLIVINE
ABUNDANT,NOW PSEUDOMORPHED BY CALCITE;
PLAGIOCLASE
QUENCH GROUNDMASS WITH SKELETAL PLAG AND FEW LARGE
AREAS OF INTERGROWN PLAG + CPX WITH A SINGLE
EXTINCTION-GIVES A KIND OF TRELLIS EFFECT*
Alteration - SAPONITE
Replacing: GROUNDMASS
ID UNCERTAIN,ALTERATION OF GROUNDMASS BY MINERAL
PLEOCHROIC FROM YELLOW TO COLORLESS(SAPONITE?);
SERICITE
Replacing: PLAG
PLAG PHENOS ARE SERICITIZED ALONG CLEAVAGE PLANES;
CALCITE
Replacing: OL
OL NOW PSEUDOMORPHED BY CALCITE;
SERPENTINITE
Replacing: OL
Vesicles -
Filling: CARB,SILICA
Leg : 37 Top/Bottom Interval(mm): 940/ 960 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 598.00 Rock Type: IGNEOUS
Core: 36 Sample Midpoint(m) : 603.45 Sect/Pc #: 4/PCE 6A
ROCK = PLAGIOCLASE-OLIVINE PHYRIC BASALT
COARSELY PLAG PHYRIC;
Texture: INTERSERTAL,PORPHYRITIC*
Phenocrysts- PLAGIOCLASE (20-25%)
Size(mm): TO 5.0
SLIGHTLY SERICITIZED,PHENOS ARE IN JUMBLED CONTACT
WITH ONE ANOTHER,SOME XTLS ARE EMBAYED,PLAG PHENOS
HAVE LOTS OF GLASS INCLUSIONS;
OLIVINE ( <1%)
SMALL(0.5MM) SCARCE FRESH OLIVINE XTLS ARE
ASSOCIATED WITH SOME PLAG CLOTS*
Groundmass - PLAGIOCLASE
Size(mm): .01-.1 Morphology: LATHS
GROUNDMASS IS INTERSERTAL WITH LONG PLAG LATHS IN
A MATRIX OF MATTED FIBROUS PYX CRYSTALLIZED FROM
PROBABLY GLASS;
OLIVINE
Size(mm): .01-.1
COMMON IN GROUNDMASS,PARTLY REPLACED BY SERPENTINE
+ SAPONITE + IDDINGS;
PYROXENE
Size(mm): .01-.1
MATTED FIBROUS PYX ENCLOSING PLAG LATHS;
MAGNETITE
Alteration - SERPENTINITE
Replacing: OL
SAPONITE
Replacing: OL
IDDINGSITE
Replacing: OL
Vesicles -
Filling: CARB
RARE,ONE CARBONATE FILLED VESICLE*
Leg : 37 Top/Bottom Interval(mm): 220/ 240 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 598.00 Rock Type: IGNEOUS
Core: 36 Sample Midpoint(m) : 604.23 Sect/Pc #: 5/PCE 3
ROCK = PLAGIOCLASE-OLIVINE PHYRIC BASALT
VERY ALTERED PHYRIC(PLAG > OL) ROCK;
Texture: INTERGRANULAR,APHANITIC-CRYPTOCRYSTALLINE,
INTERSERTAL,PORPHYRITIC*
Phenocrysts- PLAGIOCLASE ( >5%)
Size(mm): TO 3.0
ALTERED,MORE ABUNDANT THAN OL PHENOS;
OLIVINE ( >5%)
Size(mm): TO 1.5
VERY SMALL PICOTITE INCLUSIONS IN OL,ALTERED*
Groundmass - SMECTITE
MUCH OF ORIGINAL GROUNDMASS MADE OVER TO SMECTITE
(+ CHLORITE ??) + PALAGONITE*
Alteration - SMECTITE
Replacing: GROUNDMASS
CHLORITE
Replacing: GROUNDMASS
ID UNCERTAIN;
PALAGONITE
Replacing: GROUNDMASS
CARBONATE
Replacing: OL PHENOS
SERICITE
Replacing: PLAG PHENOS
SILICA
Location: VEINS
FINE SILICA-FILLED VEINS*
Vesicles -
Filling: SILICA
SILICA ENCRUSTED VESICLES*
Leg : 37 Top/Bottom Interval(mm): 1130/1150 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 607.50 Rock Type: IGNEOUS
Core: 37 Sample Midpoint(m) : 608.64 Sect/Pc #: 1/PCE 15
ROCK = PLAGIOCLASE PHYRIC BASALT;
Texture: INTERSERTAL,PORPHYRITIC*
Phenocrysts- PLAGIOCLASE ( 20%)
Size(mm): TO 4.0
ALTERED TO SERICITE,SOME SEPARATE XTLS AS WELL AS
CLUMPS OF COMBINED XTLS,ONE TWINNED PLAG XTL NOW
PSEUDOMORPHED BY CARBONATE;
OLIVINE
SPARSE MICROPHENOS OF OL NOW COMPLETELY
PSEUDOMORPHED BY FIBROUS ZEOLITE(BROWN),REFRACTIVE
INDEX << CANADA BALSAM;
ONLY ONE GRAIN PRESENT*
PICOTITE
Groundmass - PLAGIOCLASE
Morphology: LATHS
INTERSERTAL GROUNDMASS WITH FINE SKELETAL PLAG
LATHS IN A MAT OF FIBROUS PYX-PLAG + SMECTITE
ALTERATION*
Alteration - SMECTITE
Replacing: GROUNDMASS
ZEOLITE
Replacing: OL MICROPHENOS
OL MICROPHENOS NOW COMPLETELY PSEUDOMORPHED BY
FIBROUS BROWN ZEOLITE WITH REFRACTIVE INDEX <<
CANADA BALSAM;
SERICITE
Replacing: PLAG
CARBONATE
Replacing: PLAG
ONE CARB PSEUDOMORPH OF A TWINNED PLAG XTL*
Vesicles -
Filling: ZEOLITE,CARB
ZEOLITE IS BROWN AND FIBROUS WITH REFRACTIVE INDEX
<< CANADA BALSAM*
Leg : 37 Top/Bottom Interval(mm): 230/ 250 Describer: Flower, M.
Hole: 332B Top of Core Depth(m) : 607.50 Rock Type: IGNEOUS
Core: 37 Sample Midpoint(m) : 610.74 Sect/Pc #: 3/PCE 3
ROCK = OLIVINE MODERATELY PHYRIC BASALT;
Texture: INTERGRANULAR,INTERSERTAL,GLASSY
DOLERITIC GROUNDMASS*
Phenocrysts- OLIVINE ( >5%)
COARSE OL PHENOS,SLIGHTLY ALTERED TO CARB+IDDINGS;
PLAGIOCLASE ( <1%)
ONLY A FEW PLAG MICROPHENOS,FRESH AND ALTERED;
PICOTITE
MICROPHENOS*
Groundmass - OLIVINE
PLAGIOCLASE
PYROXENE
ILMENITE
MAGNETITE
Alteration - CARBONATE
Replacing: OL PHENOS
IDDINGSITE
Replacing: OL PHENOS
SMECTITE
Location: INTERSTITIAL Replacing: GROUNDMASS
FERROUS HYDROX MINS
Location: INTERSTITIAL Replacing: GROUNDMASS
SILICA
Location: INTERSTITIAL Replacing: GROUNDMASS
Vesicles -
Size(mm): 0.3
Percent: 1
Filling: SILICA
Leg : 37 Top/Bottom Interval(mm): 20/ 50 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 626.50 Rock Type: IGNEOUS
Core: 39 Sample Midpoint(m) : 626.53 Sect/Pc #: 1/PCE 1
ROCK = OLIVINE MODERATELY PHYRIC BASALT;
Texture: INTERSERTAL,PORPHYRITIC*
Phenocrysts- OLIVINE ( >5%)
Size(mm): TO 4.0
OL PHENOS RIDDLED WITH TALC(?),SOME FRESH AND SOME
ALTERED TO SERPENTINE*
Groundmass - OLIVINE
ABUNDANT,SIMILAR ALTERATION AS OL PHENOS,SOME
REPLACEMENT BY IDDINGS;
PLAGIOCLASE
GROUNDMASS IS INTERSERTAL WITH INTERGROWTHS OF
PLAG,ALSO IN A FINER MAT OF PYX-PLAG + ALTERATION
PRODUCTS;
PYROXENE
LESS WELL CRYSTALLIZED,ALSO IN A FINER MAT OF
PYX-PLAG + ALTERATION PRODUCTS;
TALC
IDENTITY UNCERTAIN,HIGH BIREFRINGENCE,WEAK
PLEOCHROISM BUT LENGTH-FAST BY MICAPLATE,FOUND ALL
THROUGH OL PHENOS AND OL GROUNDMASS,ALSO COULD BE
PART OF VESICLE FILLING;
MAGNETITE
Alteration - SERPENTINITE
Replacing: OL PHENOS
IDDINGSITE
Replacing: OL PHENOS
TALC
Replacing: OL PHENOS
ID UNCERTAIN,MIN IS HIGH BIREFRINGENT-WEAK
PLEOCHROISM-LENGTH FAST BY MICA PLATE;
ANTHOPHYLLITE
Replacing: OL PHENOS
ID UNCERTAIN*
Vesicles -
Filling: SILICA,ZEOLITE
SILICA NEXT TO WALL-THEN FIBROUS ZEOLITE-THEN A
YELLOW MODERATELY HIGH BIREFRINGENT MINERAL(TALC?
OR CARB?)*
Leg : 37 Top/Bottom Interval(mm): 340/ 360 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 636.00 Rock Type: IGNEOUS
Core: 40 Sample Midpoint(m) : 636.35 Sect/Pc #: 1/
ROCK = PLAGIOCLASE PHYRIC BASALT;
Texture: INTERSERTAL,PORPHYRITIC
QUENCHED GROUNDMASS*
Phenocrysts- PLAGIOCLASE ( 10%)
Size(mm): TO 1.5
ALTERED TO SERICITE*
Groundmass - PLAGIOCLASE
Morphology: SKELETAL
SMALL SKELETAL PLAG,ALSO IN A MAT OF FIBROUS PYX-
PLAG;
OLIVINE ( 0%)
NO OL PRESENT(?)*
Alteration - SERICITE
Replacing: PLAG PHENOS
FERROUS OXIDE
Location: INTERSTITIAL Replacing: GROUNDMASS
Location: MATERIAL
SMECTITE
Location: INTERSTITIAL Replacing: GROUNDMASS
Location: MATERIAL
Vesicles -
Filling: SMEC,CARB
ORANGE SMEC*
Leg : 37 Top/Bottom Interval(mm): 1100/1120 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 645.50 Rock Type: IGNEOUS
Core: 41 Sample Midpoint(m) : 646.61 Sect/Pc #: 1/PCE 7A
ROCK = PLAGIOCLASE PHYRIC BASALT
CONSIDERABLY ALTERED;
Texture: INTERSERTAL,PORPHYRITIC*
Phenocrysts- PLAGIOCLASE ( 20%)
Size(mm): TO 6.0
ALTERED TO SERICITE*
Groundmass - PLAGIOCLASE
INTERSERTAL GROUNDMASS WITH .1 INTERGROWTHS OF
PLAG WITH WAVY EXTINCT PYX;
GLASS
OXIDIZED AND REPLACED BY SILICA + CHLORITE;
OLIVINE
NO OL PRESENT OR NOW COMPLETELY PSEUDOMORPHED BY
SERPENTINE;
PYROXENE
EXHIBITS WAVY EXTINCTION,IN INTERSERTAL
INTERGROWTHS WITH PLAG;
MAGNETITE
Alteration - SERICITE
Replacing: PLAG PHENOS
FERROUS OXIDE
Location: INTERSTITIAL Replacing: GLASS
SILICA
Location: INTERSTITIAL Replacing: GROUNDMASS
CHLORITE
Location: INTERSTITIAL Replacing: GROUNDMASS
SERPENTINITE
Location: GROUNDMASS Replacing: OL
GROUNDMASS OL IS YELLOWISH FIBROUS AND COMPLETELY
PSEUDOMORPHED BY SERP;
IDDINGSITE
Location: GROUNDMASS Replacing: OL
Vesicles -
Filling: CHLORITE
GREEN TO COLORLESS*
Leg : 37 Top/Bottom Interval(mm): 420/ 440 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 645.50 Rock Type: IGNEOUS
Core: 41 Sample Midpoint(m) : 647.43 Sect/Pc #: 2/PCE 4
ROCK = PLAGIOCLASE PHYRIC BASALT
CONSIDERABLY ALTERED;
Texture: INTERGRANULAR,INTERSERTAL*
Phenocrysts- PLAGIOCLASE (15-20%)
Size(mm): TO 3.0
ALTERED TO SERICITE,PHENOS OF PLAG BOTH SEPARATE +
IN COMBINED INTERGROWTHS,RARE MICROPHENOCRYSTIC
CLOTS OF PLAG + AUGITE*
Groundmass - PLAGIOCLASE
Size(mm): 0.05 Morphology: LATHS
IN A FIBROUS MAT OF PYROXENE + PLAG + DEVITRIFIED
GLASS;
PYROXENE
Size(mm): 0.05
IN A FIBROUS MAT WITH PLAG + DEVITRIFIED GLASS;
OLIVINE
RARE,PSEUDOMORPHED BY FIBROUS ZEOLITE(?) WHICH HAS
BIREF. OF .010 AND R. I. < CANADA BALSAM;
MAGNETITE
Alteration - ZEOLITE
Location: GROUNDMASS Replacing: OL
ID UNCERTAIN,BIREFRINGENCE ABOUT .010-REFRACTIVE
INDEX << CANADA BALSAM;
SILICA
Location: INTERSTITIAL
LIGHT BROWN;
SMECTITE
Location: INTERSTITIAL
ID UNCERTAIN;
CHLORITE
Location: INTERSTITIAL
ID UNCERTAIN;
SERICITE
Replacing: PLAG PHENOS
Vesicles -
Filling: SILICA,CARB,
Filling: ZEOLITE,GLASS
ZEOLITE IS FIBROUS WITH REFRACTIVE INDEX << CANADA
BALSAM,SILICA IS NEXT TO WALL-THEN CARB*
Leg : 37 Top/Bottom Interval(mm): 590/ 610 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 655.00 Rock Type: IGNEOUS
Core: 42 Sample Midpoint(m) : 655.60 Sect/Pc #: 1/PCE 3D
ROCK = APHYRIC BASALT;
Texture: INTERGRANULAR,SUBOPHITIC,APHYRIC*
Groundmass - OLIVINE
Size(mm): 0.1-0.15
ABUNDANT,SOME ALTERATION TO IDDINGS ALONG CRACKS
AND XTL RIMS;
PLAGIOCLASE
Size(mm): 0.1-0.15
SOME SUBOPHITIC PATCHES ARE FAIRLY COARSE(>0.1MM);
PYROXENE
Size(mm): 0.1-0.15
PICOTITE
ONLY A FEW GRAINS PRESENT;
MAGNETITE
Alteration - IDDINGSITE
Location: GROUNDMASS Replacing: OL
IDDINGS ALTERATION OF OL ALONG CRACKS + XTL RIMS;
CHLORITE
Location: VEINS
TREMOLITE
Location: VEINS
ID UNCERTAIN,BIAXIAL(-),INCLINED EXTINCT,2V HIGH,
REFRACTIVE INDEX >> CANADA BALSAM,COLORLESS*
Vesicles -
Filling: SILICA,CHLORITE
CHLOR IS OFTEN IN BANDS OF DIFFERENT OXIDATION
STATES*
Leg : 37 Top/Bottom Interval(mm): 260/ 280 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 655.00 Rock Type: IGNEOUS
Core: 42 Sample Midpoint(m) : 656.77 Sect/Pc #: 2/PCE 1D
ROCK = OLIVINE SPARSELY PHYRIC BASALT;
Texture: INTERGRANULAR,SUBOPHITIC*
Phenocrysts- OLIVINE ( <1%)
Size(mm): TO 2.0
FRESH,VERY SPARSE,OL PHENOS EMBAYED IN GROUNDMASS;
PLAGIOCLASE
ONLY ONE PHENOCRYST FOUND;
PICOTITE
VERY SPARSE*
Groundmass - OLIVINE
Size(mm): 0.15-0.2 Morphology: SUBHEDRAL
PSEUDOMORPHED BY SERPENTINE + CHLORITE + IDDINGS;
PLAGIOCLASE
MAGNETITE
Alteration - SERPENTINITE
Location: GROUNDMASS Replacing: OL
OL PSEUDOMORPHED BY SERP;
CHLORITE
Location: GROUNDMASS Replacing: OL
IDDINGSITE
Location: GROUNDMASS Replacing: OL
Vesicles -
Filling: SMEC,ZEOLITE,
Filling: TALC
SMEC IS YELLOW-ORANGE,ID OF TALC UNCERTAIN-THE
MINERAL IS BIAXIAL(-) WITH 2V < 20 AND TWINNED LOW
EXTINCTION ANGLE*
Leg : 37 Top/Bottom Interval(mm): 1050/1070 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 664.50 Rock Type: IGNEOUS
Core: 43 Sample Midpoint(m) : 665.56 Sect/Pc #: 1/PCE 8A
ROCK = PLAGIOCLASE PHYRIC BASALT;
Texture: INTERGRANULAR,PORPHYRITIC*
Phenocrysts- PLAGIOCLASE (10-15%)
Size(mm): TO 1.5
SOME ALTERED TO SERICITE,SOME CLOTS OF PLAG-PYX IN
A FINER MAT OF THE SAME,THE PYX-PLAG CLOTS ARE
DIFFERENT FROM OTHER ROCKS IN THIS HOLE;
PYROXENE
IN CLOTS WITH PLAG,IN A FINER MAT OF PLAG-PYX*
Groundmass - PLAGIOCLASE
IN A FINE MAT WITH PYX;
PYROXENE
IN A FINE MAT WITH PLAG;
COMBINATION
INCLUDES INTERSTITIAL SMEC + CHLORITE + SAPONITE*
Alteration - ZEOLITE
Location: VEINS AND
Location: VESICLES
ID UNCERTAIN-LENGTH SLOW-BIREFRINGENCE OF .004-
REFRACTIVE INDEX < CANADA BALSAM-PARALLEL
EXTINCTION,COULD BE STILBITE(?);
SERICITE
Replacing: PLAG PHENOS
SMECTITE
Location: INTERSTITIAL
CHLORITE
Location: INTERSTITIAL
SAPONITE
Location: INTERSTITIAL
Vesicles -
Filling: ZEOLITE
ID UNCERTAIN-LENGTH SLOW-LOW BIREFRINGENCE-LOOKS
LIKE PLAG RELIEF IN SOME PLACES*
Leg : 37 Top/Bottom Interval(mm): 420/ 450 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 674.00 Rock Type: IGNEOUS
Core: 44 Sample Midpoint(m) : 674.44 Sect/Pc #: 1/
ROCK = PLAGIOCLASE PHYRIC BASALT;
Texture: INTERGRANULAR,INTERSERTAL,PORPHYRITIC*
Phenocrysts- PLAGIOCLASE (10-15%)
Size(mm): TO 2.0
MICROPHENOS OF AUGITE ASSOCIATED WITH THE LARGE
PLAG AND IN CLOTS WITH THE SMALLER PLAG,LOTS OF
INCLUSIONS(GLASS?) IN THE PLAG;
AUGITE ( 1-5%)
MICROPHENOS ASSOCIATED WITH THE LARGE PLAG AND IN
CLOTS WITH THE SMALLER PLAG,COMPARE CORE 42*
Groundmass - GLASS
OXIDIZED AND DEVITRIFIED PATCHES;
COMBINATION
INCLUDES CHLORITE + SMECTITE;
OLIVINE
NONE PRESENT?*
Alteration - FERROUS OXIDE
Location: INTERSTITIAL Replacing: GLASS
SMECTITE
Location: INTERSTITIAL
CHLORITE
Location: INTERSTITIAL
Vesicles -
Filling: ZEOLITE
ID UNCERTAIN-LOW BIREFRINGENCE-LENGTH SLOW-BLADED*
Leg : 37 Top/Bottom Interval(mm): 240/ 260 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 674.00 Rock Type: IGNEOUS
Core: 44 Sample Midpoint(m) : 678.75 Sect/Pc #: 4/PCE 3
ROCK = PLAGIOCLASE PHYRIC BASALT;
Texture: INTERGRANULAR,SUBOPHITIC, PORPHYRITIC*
Phenocrysts- PLAGIOCLASE ( 15%)
Size(mm): >0.5
IN A GROUNDMASS THAT IS INTERGRANULAR WITH SOME
COARSER SUBOPHITIC ZONES;
Groundmass - CLINOPYROXENE
SOME SMALL BUT NOT LIKE IN SECTIONS 44-6 AND 42;
OLIVINE
RARE PSEUDOMORPHS OF OL BY CHLOR + SERPENTINE*
Alteration - CHLORITE
Replacing: OL
RARE PSEUDOMORPHS OF OL BY CHLOR;
SERPENTINITE
Replacing: OL
RARE PSEUDOMORPHS OF OL BY SERP;
ZEOLITE
Replacing: GROUNDMASS
ID UNCERTAIN-LOW BIREFRINGENCE-LENGTH SLOW,BLADED*
Vesicles -
Filling: ZEOLITE,CHLOR
BLADED-LOW BIREFRINGENCE-LENGTH SLOW,ID OF CHLOR
UNCERTAIN-FIBROUS YELLOW-BROWN-MODERATE BIREF*
Leg : 37 Top/Bottom Interval(mm): 460/ 480 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 674.00 Rock Type: IGNEOUS
Core: 44 Sample Midpoint(m) : 681.97 Sect/Pc #: 6/PCE 1D
ROCK = PLAG-CPX SPARSELY PHYRIC BASALT;
Texture: INTERGRANULAR,SUBOPHITIC*
Phenocrysts- PLAGIOCLASE ( <1%)
Size(mm): TO 0.8
SEVERAL PLAG PHENOS IN AN INTERGRANULAR
GROUNDMASS WITH AREAS OF COARSER SUBOPHITIC PLAG-
CPX;
AUGITE ( <1%)
Size(mm): TO 0.8
ONE LARGE AUGITE PHENOCRYST*
Groundmass - PLAGIOCLASE
Size(mm): 0.1
CLINOPYROXENE
MAGNETITE
OLIVINE
PROBABLE OLIVINE IN GROUNDMASS PSEUDOMORPHED BY
SERPENTINE + CHLORITE*
Alteration - SERPENTINITE
Location: GROUNDMASS Replacing: OL
PROBABLE OL IN GROUNDMASS PSEUDOMORPHED BY SERP;
CHLORITE
Location: GROUNDMASS Replacing: OL
PROBABLE OL IN GROUNDMASS PSEUDOMORPHED BY CHLOR*
Leg : 37 Top/Bottom Interval(mm): 540/ 560 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 683.50 Rock Type: UNIDENTIFIED
Core: 45 Sample Midpoint(m) : 684.05 Sect/Pc #: 1/
ROCK = PLAGIOCLASE-OLIVINE PHYRIC BASALT
ROCK IS A BRECCIA;
Texture: MICROGLOMEROPORPHYRITIC*
Phenocrysts- PLAGIOCLASE ( 10%)
Size(mm): TO 3.0
ALTERED TO SERICITE;
OLIVINE ( 1-5%)
FRESH,OL MICROPHENOS ARE COMMON*
Groundmass - CLINOPYROXENE
RARE MICROGLOMEROPHYRIC CLOTS OF CPX;
GLASS
ALTERED AND QUENCHED YELLOWISH GLASS,ISOTROPIC AND
WITH R. I. > CANADA BALSAM, NOW PARTLY CONVERTED
TO UNKNOWN MINERAL (?)*
Alteration - SERICITE
Replacing: PLAG PHENOS
COMBINATION
Location: VEINS
INCLUDES NEARLY ISOTROPIC YELLOW CHLOR OR SERP
CUTTING THE YELLOWISH ISOTROPIC AREAS;
SMECTITE
Replacing: GROUNDMASS
CONVERTED TO BROWN SMECTITE IN UPPER RIGHT CORNER
OF SLIDE*
Leg : 37 Top/Bottom Interval(mm): 580/ 600 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 693.00 Rock Type: IGNEOUS
Core: 46 Sample Midpoint(m) : 693.59 Sect/Pc #: 1/PCE 6D
ROCK = PLAG SPARSELY PHYRIC BASALT;
Texture: INTERGRANULAR,SUBOPHITIC*
Phenocrysts- PLAGIOCLASE ( 1-5%)
Size(mm): TO 0.7
ALTERED TO SERICITE,PLAG IS IN AN INTERGRANULAR
GROUNDMASS WITH SOME SUBOPHITIC PATCHES*
Groundmass - PLAGIOCLASE
INTERGRANULAR WITH SOME SUBOPHITIC PATCHES;
CLINOPYROXENE
INTERGRANULAR WITH SOME SUBOPHITIC PATCHES;
CHLORITE
INTERSTITIAL*
Alteration - SERICITE
Replacing: PLAG PHENOS
CHLORITE
Location: INTERSTITIAL Replacing: GROUNDMASS
Vesicles -
Filling: CHLOR,TREMOL
CHLOR IS BROWN PLEOCHROIC,ID FOR TREMOL UNCERTAIN-
MINERAL IS RARE*
Leg : 37 Top/Bottom Interval(mm): 990/1020 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 702.50 Rock Type: IGNEOUS
Core: 47 Sample Midpoint(m) : 705.01 Sect/Pc #: 2/PCE 6B
ROCK = PLAG SPARSELY PHYRIC BASALT;
Texture: SUBOPHITIC*
Phenocrysts- PLAGIOCLASE ( 1-5%)
Size(mm): TO 0.5
VERY SPARSE PLAG PHENOS IN COARSE GROUNDMASS*
Groundmass - PLAGIOCLASE
Size(mm): 0.15
COARSE SUBOPHITIC GROUNDMASS;
CLINOPYROXENE
Size(mm): 0.15
COARSE SUBOPHITIC GROUNDMASS;
OLIVINE
OL(?) MAY BE PSEUDOMORPHED BY CHLORITE + SERP;
MAGNETITE
Alteration - CHLORITE
Location: INTERSTITIAL
YELLOW-BROWN;
SMECTITE
Location: INTERSTITIAL
YELLOW-BROWN;
CHLORITE
Replacing: OL
OL(?) MAY BE PSEUDOMORPHED BY CHLOR-SERP;
SERPENTINITE
Replacing: OL
OL(?) MAY BE PSEUDOMORPHED BY CHLOR-SERP*
Leg : 37 Top/Bottom Interval(mm): 1460/ 0 Describer: Wright, T.
Hole: 332B Top of Core Depth(m) : 712.00 Rock Type: IGNEOUS
Core: 48 Sample Midpoint(m) : 713.46 Sect/Pc #: 1/PCE 11
ROCK = APHYRIC BASALT
APHYRIC QUENCHED LAVA;
Texture: APHANITIC-CRYPTOCRYSTALLINE,INTERSERTAL*
Groundmass - PLAGIOCLASE
Morphology: LATHS
SMALL PLAG LATHS SET IN A FINER MAT OF FIBROUS CPX
+ PLAG + RARE ALTERATION PRODUCTS;
CLINOPYROXENE
OLIVINE
PROBABLE ORIGINAL OL MICROPHENOS NOW PSEUDOMORPHED
BY SERPENTINE*
Alteration - SERPENTINITE
Replacing: OL PHENOS
PROBABLE ORIGINAL OL MICROPHENOS NOW PSEUDOMORPHED
BY SERP*
Vesicles -
Filling: SILICA,ZEOLITE
VESICLES PARTLY FILLED(VERY SLOW SIGNS OF PLUCKING
DURING THE PRECIPITATION) WITH SILICA+ZEOLITE(?)*
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