Leg : 69 Top/Bottom Interval(mm): 100/ 120 Describer: Pertsev, N.
Hole: 505 Top of Core Depth(m) : 233.50 Rock Type: IGNEOUS
Core: 25 Sample Midpoint(m) : 233.61 Sect/Pc #: 1/PCE 92
ROCK = PLAG-OL-CPX PHYRIC BASALT;
Texture: PHYRIC,MICROLITIC,VARIOLITIC*
Phenocrysts- OLIVINE
Size(mm): 3-10 Morphology: EUHEDRAL,SUBHEDRAL,ANHEDRAL
OLIVINE ( 5-10%)
Size(mm): 1-3 Morphology: EUHEDRAL,SUBHEDRAL,ANHEDRAL
FRESH AND ALTERED ONLY ALONG RARE GRAINS,PERCENT
IS FOR TOTAL OL PHENOS;
PLAGIOCLASE
Size(mm): 3-10 Morphology: EUHEDRAL,SUBHEDRAL
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL,SUBHEDRAL
PLAGIOCLASE
Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL
HUGE PLAG PHENOS CONTAIN GLASSY INCLUSIONS AND
ROUNDED XTLS OF OL;
CLINOPYROXENE ( TR%)
Size(mm): 1-3 Morphology: SUBHEDRAL
PYX XTLS ARE RARE,ROUNDED,RESORBED AND SEEM TO BE
XENOCRYSTS*
Groundmass - PLAGIOCLASE ( >40%)
Morphology: EUHEDRAL,SUBHEDRAL
PERCENT IS FOR TOTAL PLAG IN SECTION;
SPHERULITIC MESOSTASIS (20-40%)
TITANOMAGNETITE ( 1-5%)
Morphology: EUHEDRAL,SUBHEDRAL
SUBMICROSCOPIC AND DISSEMINATED EUHEDRAL AND
SUBHEDRAL GRAINS, CR-SPINEL,PYRITE AND TITANO-MAGN
ARE <1% OF SLIDE;
CHROME SPINEL ( TR%)
Morphology: EUHEDRAL
SPINEL GRAINS(SEVERAL) ARE BOTH IN PLAG PHENOS AND
GROUNDMASS,CR-SPINEL AS LARGE EUHEDRAL GRAINS IN
PLAG AND MESOSTASIS,THEY ARE VERMICULAR AND
SKELETAL*
Alteration - SMECTITE
Location: VEINS Replacing: OL
Leg : 69 Top/Bottom Interval(mm): 280/ 300 Describer: Noack, Y.
Hole: 505 Top of Core Depth(m) : 233.50 Rock Type: IGNEOUS
Core: 25 Sample Midpoint(m) : 233.79 Sect/Pc #: 1/PCE 92
ROCK = PLAG-OL-CPX PHYRIC BASALT;
Texture: PHYRIC,OPHITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): 1-3
OLIVINE ( 5-10%)
Size(mm): .3-1
PERCENT IS FOR TOTAL OL PHENOS,FRESH RELICS OF OL,
OL WITH SMECTITE RIMS(ALTERATION 50%),PHENOS OF
OL-CPX-PLAG IN A MICROLITIC MESOSTASIS(PLAG-CPX);
PLAGIOCLASE
Size(mm): 3-10
PLAGIOCLASE
Size(mm): 1-3
PLAGIOCLASE
Size(mm): .3-1
CLINOPYROXENE
Size(mm): 1-3
CLINOPYROXENE
Size(mm): .3-1
Groundmass - PLAGIOCLASE
Size(mm): .1-.3
PLAGIOCLASE
Size(mm): .03-.1
PLAGIOCLASE (20-40%)
Size(mm): .01-.03
PERCENT IS FOR TOTAL PLAG IN SECTION,APPROX COMP
AN50-70*
Alteration - SMECTITE
Replacing: OL
RARE VESICLES,LIGHT YELLOW WITH GOLD YELLOW RIM*
Leg : 69 Top/Bottom Interval(mm): 330/ 360 Describer: Noack, Y.
Hole: 505 Top of Core Depth(m) : 238.00 Rock Type: IGNEOUS
Core: 26 Sample Midpoint(m) : 238.35 Sect/Pc #: 1/PCE 97
ROCK = PLAG-OL-CPX PHYRIC BASALT;
Texture: PHYRIC,OPHITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): 1-3
OLIVINE
Size(mm): .3-1
PLAGIOCLASE
Size(mm): 1-3
PLAGIOCLASE
Size(mm): .3-1
CLINOPYROXENE
Size(mm): .3-1
Groundmass - OLIVINE ( 5-10%)
Size(mm): .1-.3
PERCENT IS FOR TOTAL OL IN SECTION,FRESH OL WITH
SMECTITES IN CRACKS;
PLAGIOCLASE
Size(mm): .1-.3
PLAGIOCLASE
Size(mm): .03-.1
PLAGIOCLASE ( >40%)
Size(mm): .01-.03
PERCENT IS FOR TOTAL PLAG IN SECTION*
Alteration - SMECTITE
Location: VESICLES Replacing: OL
CRACKS AND SMALL VESICLES FILLED WITH YELLOW-RED
MECTITES*
Vesicles -
Size(mm): .03-.1
Percent: .5-1
Filling: SMECTITE
Leg : 69 Top/Bottom Interval(mm): 330/ 360 Describer: Pertsev, N.
Hole: 505 Top of Core Depth(m) : 238.00 Rock Type: IGNEOUS
Core: 26 Sample Midpoint(m) : 238.35 Sect/Pc #: 1/PCE 97
ROCK = PLAG-OL-CPX-CR.SPINEL PHYRIC BASALT;
Texture: PHYRIC,VARIOLITIC*
Phenocrysts- OLIVINE
Size(mm): 3-10 Morphology: EUHEDRAL
OLIVINE ( 5-10%)
Size(mm): 1-3 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL OL PHENOS,FRESH-ALTERED
ONLY ALONG RARE CRACKS;
PLAGIOCLASE
Size(mm): 3-10 Morphology: EUHEDRAL
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL
CLINOPYROXENE
Size(mm): 3-10 Morphology: SUBHEDRAL
CLINOPYROXENE ( TR%)
Size(mm): 1-3 Morphology: SUBHEDRAL
PERCENT IS FOR TOTAL CPX PHENOS,CPX XTLS ARE VERY
RARE AND ROUNDED,RESORBED,THEY SEEM TO BE
XENOCRYSTS;
CHROME SPINEL ( TR%)
Size(mm): .3-1 Morphology: EUHEDRAL
LARGE EUHEDRAL CR-SPINEL XTLS(SMALL PHENOS IN
GROUNDMASS-SEVERAL GRAINS)WITHIN OL AND PLAG XTLS
(VERMICULAR AND SKELETAL)*
Groundmass - PLAGIOCLASE (20-40%)
Size(mm): .1-.3 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL PLAG IN SECTION;
SPHERULITIC MESOSTASIS ( >40%)
PYRITE ( 0%)
TITANOMAGNETITE ( 1-5%)
Size(mm): .03-.1
SUBMICROSCOPIC EUHEDRAL TITANO-MAGN IN THE
MESOSTASIS,CR-SPINEL AND TITANO-MAGN ARE <1% OF
SLIDE,CR-SPINEL/TITANO-MAGN=9/1*
Alteration - SMECTITE
Location: VEINS, Replacing: OL
Location: VESICLES
BROWN*
Vesicles -
Size(mm): .3-1
Percent: TR
Filling: SMECTITE
Shape: ROUND
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