Leg : 49 Top/Bottom Interval(mm): 100/ 150 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 325.00 Rock Type: IGNEOUS
Core: 1 Sample Midpoint(m) : 334.13 Sect/Pc #: 7/PCE 1
ROCK = OL-PLAG SP MICROPHYRIC BASALT
EXT ALTERED*
Texture: GLASSY,VARIOLITIC,SP MICROPHYRIC;
Where sampled: GLASSY MARGIN AT CONTACT WITH CARB + FORAMS*
Phenocrysts- OLIVINE ( 1%)
Size(mm): <1 Morphology: EUHEDRAL
FRESH;
PLAGIOCLASE ( <1%)
FRESH,APPROX COMP AN65-70;
Groundmass - GLASS
COMPLETELY PALAGONITIZED,GLASS IS BLACK TO
PALE BROWN*
Alteration - CARBONATE
Replacing: GLASS,GROUNDMASS
ZEOLITE
Replacing: GLASS,GROUNDMASS
PALAGONITE
Replacing: GROUNDMASS(GLASSY)
Vesicles -
Filling: CARB
5% CARB*
Leg : 49 Top/Bottom Interval(mm): 190/ 280 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 325.00 Rock Type: IGNEOUS
Core: 1 Sample Midpoint(m) : 334.24 Sect/Pc #: 7/PCE 3
ROCK = OL-PLAG SP MICROPHYRIC BASALT
SLIGHTLY ALTERED;
Texture: GLASSY,SP MICROPHYRIC,EMBRYOHIC VARIOLITIC;
Where sampled: GLASSY MARGIN*
Phenocrysts- OLIVINE ( <1%)
PLAGIOCLASE ( <1%)
Groundmass - GLASS ( 97%)
OLIVINE ( 1%)
PLAGIOCLASE ( 2%)
Vesicles -
Size(mm): <1
Location: 2
Filling: CALCITE
Leg : 49 Top/Bottom Interval(mm): 0/ 0 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 334.50 Rock Type: IGNEOUS
Core: 2 Sample Midpoint(m) : 334.50 Sect/Pc #: 1/PCE 3
ROCK = APHYRIC BASALT
SLIGHTLY ALTERED;
Texture: GLASSY,APHYRIC;
Where sampled: FLOW OR PILLOW MARGIN*
Phenocrysts- OLIVINE ( <1%)
FRESH;
PLAGIOCLASE ( <1%)
FRESH*
Groundmass - GLASS (90-99%)
Leg : 49 Top/Bottom Interval(mm): 480/ 520 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 334.50 Rock Type: IGNEOUS
Core: 2 Sample Midpoint(m) : 335.00 Sect/Pc #: 1/PCE 7
ROCK = APHYRIC BASALT;
Texture: VARIOLITIC,GLASSY,INTERSERTAL,APHYRIC;
Where sampled: FLOW MARGIN*
Phenocrysts- OLIVINE ( <1%)
PLAGIOCLASE ( <1%)
Groundmass - GLASS
BLACK;
OLIVINE ( 5-10%)
PLAGIOCLASE (20-30%)
Morphology: QUENCH MORPHOLOGY
Vesicles -
Filling: GLASS(BLACK)
Shape: ROUND
Leg : 49 Top/Bottom Interval(mm): 930/ 960 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 334.50 Rock Type: IGNEOUS
Core: 2 Sample Midpoint(m) : 335.45 Sect/Pc #: 1/PCE 11
ROCK = CPX-PLAG SP MICORPHYRIC BASALT;
Texture: GLASSY, SP MICROPHYRIC;
Where sampled: GLASS MARGIN, CONTACT WITH FORAM LIMSTONE*
Phenocrysts- CLINOPYROXENE ( <1%)
PLAGIOCLASE ( <1%)
Groundmass - GLASS
OLIVINE ( TR%)
PLAGIOCLASE ( TR%)
EMBRONIC FELDSPAR IN THE MOST CRYSTALLINE
GROUNDMASS (3CM FROM MARGIN)*
Vesicles -
Filling: CARB
Leg : 49 Top/Bottom Interval(mm): 500/ 520 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 334.50 Rock Type: IGNEOUS
Core: 2 Sample Midpoint(m) : 336.51 Sect/Pc #: 2/PCE 8
ROCK = OL-PLAG SP MICROPHYRIC BASALT
EXT ALTERED (GROUNDMASS);
Texture: VARIOLITIC,GLASSY,SP MICROPHYRIC;
Where sampled: GLASSY MARGIN TO NEXT TO GLASSY MARGIN*
Phenocrysts- OLIVINE ( <1%)
Morphology: SUBHEDRAL TO EUHEDRAL
FRESH;
PLAGIOCLASE ( <1%)
FRESH*
Groundmass - GLASS
COMPLETELY PALAGONITIZED,GLASSY MARGIN UNALTERED*
Alteration - CARBONATE
Replacing: GLASS
ZEOLITE
Replacing: GLASS
PALAGONITE
Replacing: GROUNDMASS
Vesicles -
Filling: CARB
>5% CARB*
Leg : 49 Top/Bottom Interval(mm): 1140/1170 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 334.50 Rock Type: IGNEOUS
Core: 2 Sample Midpoint(m) : 337.16 Sect/Pc #: 2/PCE 18
ROCK = BASALTIC GLASS
FRESH;
Where sampled: MARGIN OF BRECCIA FRAGMENT*
Phenocrysts- OLIVINE ( <1%)
FRESH;
PLAGIOCLASE ( <1%)
FRESH*
Groundmass - GLASS ( 90%)
FRESH*
Alteration - CHLOROPHAEITE
Replacing: GLASS
ID UNCERTAIN FOR CHLOROPH*
Vesicles -
Filling: CARB
Leg : 49 Top/Bottom Interval(mm): 500/ 520 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 334.50 Rock Type: IGNEOUS
Core: 2 Sample Midpoint(m) : 338.01 Sect/Pc #: 3/PCE 6A
ROCK = BASALTIC GLASS;
Texture: GLASSY,SP MICROPHYRIC;
Where sampled: NEXT TO GLASSY MARGIN*
Phenocrysts- OLIVINE ( <1%)
FRESH;
PLAGIOCLASE ( <1%)
FRESH*
Groundmass - GLASS ( 90%)
GRADUAL INCREASE IN PALAGONITIZATION AWAY FROM
MARGIN*
Alteration - CHLOROPHAEITE
Replacing: GLASS
ID UNCERTAIN FOR CHLOROPH*
PALAGONITE
Replacing: GLASS
Vesicles -
Size(mm): <1
Percent: >5
Filling: CARB
Leg : 49 Top/Bottom Interval(mm): 520/ 550 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 334.50 Rock Type: UNIDENTIFIED
Core: 2 Sample Midpoint(m) : 338.04 Sect/Pc #: 3/PCE 6B
ROCK = BASALTIC BRECCIA;
Texture: GLASSY;
Where sampled: GLASSY MARGIN IN CONTACT WITH CARB CEMENT*
Phenocrysts- OLIVINE ( <1%)
FRESH;
PLAGIOCLASE ( <1%)
FRESH*
Groundmass - GLASS
Alteration - SMECTITE
Location: RIMS FRAGMENT Replacing: GLASS
SMEC IS GREEN/BROWN AND VERMICULAR*
Leg : 49 Top/Bottom Interval(mm): 850/ 900 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 334.50 Rock Type: IGNEOUS
Core: 2 Sample Midpoint(m) : 338.38 Sect/Pc #: 3/PCE 11
ROCK = OL-PLAG SP MICROPHYRIC BASALT;
Texture: VARIOLITIC,GLOMEROPHYRIC,SP MICROPHYRIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE ( <1%)
Morphology: EUHEDRAL (SOME)
PLAGIOCLASE ( <1%)
APPROX COMP >AN 70*
Groundmass - PLAGIOCLASE
GLASS
PALAGONITIZED*
Alteration - CARBONATE
Replacing: GROUNDMASS
ZEOLITE
Replacing: GROUNDMASS
ID UNCERTAIN FOR ZEOLITE;
PALAGONITE
Replacing: GROUNDMASS
EXTENSIVE BUT NOT COMPLETE PALAGONITIZATION*
Vesicles -
Size(mm): <0.5
Percent: <5
Filling: CARB
Leg : 49 Top/Bottom Interval(mm): 350/ 400 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 334.50 Rock Type: IGNEOUS
Core: 2 Sample Midpoint(m) : 339.38 Sect/Pc #: 4/PCE 4
ROCK = APHYRIC BASALT
FRESH;
Texture: INTERSERTAL-VARIOLITIC;
Where sampled: FLOW INTERIOR*
Groundmass - OLIVINE ( 2-5%)
Morphology: SUBHEDRAL
PLAGIOCLASE ( 45%)
CLINOPYROXENE ( 30%)
OPAQUE MINERALS ( 2%)
INCLUDES ILMENITE+MAGN,IN GLASS;
GLASS (15-20%)
PARTIALLY ALTERED,BROWN BLACK*
Vesicles -
Size(mm): <1
Percent: 4
Filling: CARB,CHLOROPH
CHLOROPH IN SOME VESICLES-GREEN YELLOW*
Leg : 49 Top/Bottom Interval(mm): 750/ 800 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 334.50 Rock Type: IGNEOUS
Core: 2 Sample Midpoint(m) : 339.78 Sect/Pc #: 4/PCE 8
ROCK = BASALTIC GLASS;
Texture: GLASSY, SP MICROPHYRIC*
Phenocrysts- OLIVINE ( <1%)
FRESH;
PLAGIOCLASE ( <1%)
FRESH*
Groundmass - GLASS
PALAGONITIZATION,SMALL AMOUNT FRESH GLASS
REMAINS*
Alteration - SMECTITE
Replacing: GLASS
ZEOLITE
Replacing: GLASS
ID UNCERTAIN FOR ZEOL;
PALAGONITE
Replacing: GLASS
Leg : 49 Top/Bottom Interval(mm): 250/ 300 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 334.50 Rock Type: IGNEOUS
Core: 2 Sample Midpoint(m) : 340.78 Sect/Pc #: 5/PCE 3
ROCK = BASALTIC GLASS
EXT ALTERED;
Texture: VARIOLITIC,SP MICOPHYRIC,GLASSY;
Where sampled: GLASSY MARGIN*
Phenocrysts- OLIVINE ( <1%)
FRESH;
PLAGIOCLASE ( <1%)
FRESH*
Groundmass - GLASS
FRESH,ALTERED*
Alteration - SMECTITE
Replacing: GLASS
CARBONATE
Replacing: GLASS
CHLOROPHAEITE
Replacing: GLASS
ZEOLITE
Replacing: GLASS
PALAGONITE
Replacing: GLASS
Vesicles -
Size(mm): <1
Percent: 10
Location: ZEOL FILLED
Filling: SMEC,CARB,ZEOL
Location: VESICLES
Location: PARALLEL TO
Location: GLASSY MARGIN
10 % CARB*
Leg : 49 Top/Bottom Interval(mm): 880/ 920 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 334.50 Rock Type: IGNEOUS
Core: 2 Sample Midpoint(m) : 341.40 Sect/Pc #: 5/PCE 12
ROCK = APHYRIC BASALT;
Texture: VARIOLITIC-INTERSERTAL;
Where sampled: FLOW MARGIN*
Groundmass - OLIVINE ( 1-2%)
PLAGIOCLASE ( 45%)
CLINOPYROXENE ( 30%)
MAGNETITE ( 2%)
IN GLASS;
GLASS ( 10%)
PARTIALLY ALTERED,BLACK BROWN*
Alteration - SMECTITE
Replacing: GLASS
PALAGONITE
Vesicles -
Size(mm): <1
Percent: 10
Filling: SMEC
LINES MOST VESICLES*
Leg : 49 Top/Bottom Interval(mm): 740/ 760 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 344.00 Rock Type: IGNEOUS
Core: 3 Sample Midpoint(m) : 344.75 Sect/Pc #: 1/PCE 7
ROCK = APHYRIC BASALT
MOD ALTERED,QUENCH FACIES;
Texture: VARIOLITIC,GLASSY,APHYRIC;
Where sampled: GLASSY MARGIN,CONTACT WITH LIMESTONE-FEW FOSSIL
FRAGMENTS*
Groundmass - GLASS ( 60%)
FRESH;
PLAGIOCLASE ( 30%)
OLIVINE ( 0%)
CLINOPYROXENE ( <10%)
VERY SMALL;
OPAQUE MINERALS ( 0%)
Alteration - SMECTITE
Replacing: GLASS
Vesicles -
Size(mm): .5
Percent: 10
Filling: SMEC,CARB
Leg : 49 Top/Bottom Interval(mm): 1100/1120 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 344.00 Rock Type: IGNEOUS
Core: 3 Sample Midpoint(m) : 345.11 Sect/Pc #: 1/PCE 13
ROCK = APHYRIC BASALT;
Texture: GLASSY;
Where sampled: PILLOW MARGIN*
Phenocrysts- OLIVINE ( <1%)
PLAGIOCLASE ( <1%)
Groundmass - GLASS
BROWN*
Vesicles -
Filling: CARB
Leg : 49 Top/Bottom Interval(mm): 1320/1340 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 344.00 Rock Type: UNIDENTIFIED
Core: 3 Sample Midpoint(m) : 345.33 Sect/Pc #: 1/PCE 16
ROCK = BASALTIC BRECCIA;
Texture: GLASSY,HYALOCLASTIC,APHYRIC;
Where sampled: PILLOW MARGIN*
Phenocrysts- OLIVINE ( <1%)
FRESH;
PLAGIOCLASE ( <1%)
FRESH*
Groundmass - GLASS
FRAGMENTED INTO ANGULAR FRAGMENTS WITH LATE
CALCITE FILLINGS*
Vesicles -
Filling: CARB
Leg : 49 Top/Bottom Interval(mm): 0/ 0 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 344.00 Rock Type: IGNEOUS
Core: 3 Sample Midpoint(m) : 345.50 Sect/Pc #: 2/PCE 6
ROCK = APHYRIC BASALT;
Texture: SUBOPHITIC,APHANITIC-CRYPTOXTLLINE,APHYRIC*
Phenocrysts- OLIVINE ( <1%)
FRESH*
Groundmass - GLASS ( 30%)
RELATIVELY FRESH,BLACK BROWN;
OLIVINE ( 5-7%)
PLAGIOCLASE (40-45%)
CLINOPYROXENE (10-20%)
Alteration - SMECTITE
Replacing: GLASS
Vesicles -
Filling: SMEC
Leg : 49 Top/Bottom Interval(mm): 1070/1090 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 344.00 Rock Type: IGNEOUS
Core: 3 Sample Midpoint(m) : 346.58 Sect/Pc #: 2/PCE 14
ROCK = APHYRIC BASALT;
Texture: VARIOLITIC,INTERSERTAL,GLASSY;
Where sampled: NEXT TO GLASSY MARGIN*
Phenocrysts- OLIVINE ( <1%)
FRESH,ALTERED,GLOMEROPHYRIC;
PLAGIOCLASE ( <1%)
FRESH,GLOMEROPHYRIC*
Groundmass - GLASS ( 40%)
ALTERED;
OLIVINE ( TR%)
PLAGIOCLASE ( 40%)
CLINOPYROXENE ( 20%)
OPAQUE MINERALS ( <1%)
INCLUDES ILMENITE+MAGN*
Alteration - SMECTITE
Replacing: GLASS
Vesicles -
Filling: SMEC,CARB
Leg : 49 Top/Bottom Interval(mm): 1070/1091 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 344.00 Rock Type: IGNEOUS
Core: 3 Sample Midpoint(m) : 346.58 Sect/Pc #: 2/PCE 14
ROCK = APHYRIC BASALT
QUENCH FACIES,MOD ALTERED;
Where sampled: NEXT TO GLASSY MARGIN;
Texture: APHYRIC,VARIOLITIC,GLASSY*
Groundmass - GLASS ( 80%)
FRESH;
PLAGIOCLASE ( 20%)
CLINOPYROXENE ( TR%)
Alteration - SMECTITE
Replacing: GROUNDMASS
Vesicles -
Filling: SMEC,CARB
Leg : 49 Top/Bottom Interval(mm): 1420/1430 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 344.00 Rock Type: IGNEOUS
Core: 3 Sample Midpoint(m) : 346.93 Sect/Pc #: 2/PCE 16
ROCK = APHYRIC BASALT
CHILLED FACIES,SLIGHTLY ALTERED;
Texture: VARIOLITIC,GLASSY,APHYRIC*
Groundmass - GLASS
FRESH;
PLAGIOCLASE ( 25%)
CLINOPYROXENE ( 5%)
Alteration - SMECTITE
Replacing: GLASS
Vesicles -
Size(mm): .25
Percent: 3
Filling: SMEC
Leg : 49 Top/Bottom Interval(mm): 0/ 0 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 344.00 Rock Type: IGNEOUS
Core: 3 Sample Midpoint(m) : 347.00 Sect/Pc #: 3/PCE 10B
ROCK = APHYRIC BASALT;
Texture: VARIOLITIC,INTERSERTAL,GLASSY,APHYRIC;
Where sampled: NEXT TO MARGIN*
Phenocrysts- OLIVINE ( <1%)
ALTERED, ID UNCERTAIN,INTERSERTAL*
Groundmass - GLASS ( 40%)
PARTIALLY ALTERED,PLAG AND CPX VARIOLITES,
ELONGATED QUENCH XTLS;
OLIVINE ( TR%)
Vesicles -
Size(mm): <.5
Percent: 10
Location: IN GLASS
Filling: SMEC,CARB
Leg : 49 Top/Bottom Interval(mm): 30/ 80 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 344.00 Rock Type: IGNEOUS
Core: 3 Sample Midpoint(m) : 347.06 Sect/Pc #: 3/PCE 1A
ROCK = APHYRIC BASALT;
Texture: APHYRIC,GLASSY*
Phenocrysts- OLIVINE ( TR%)
Groundmass - OLIVINE ( TR%)
PLAGIOCLASE ( 20%)
Morphology: SKELETAL
CLINOPYROXENE ( 5%)
SUBZONIC*
Leg : 49 Top/Bottom Interval(mm): 1200/1290 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 344.00 Rock Type: IGNEOUS
Core: 3 Sample Midpoint(m) : 348.25 Sect/Pc #: 3/PCE 11
ROCK = APHYRIC BASALT
EXT ALTERED;
Texture: APHYRIC,VARIOLITIC,GLASSY;
Where sampled: NEXT TO MARGIN*
Groundmass - GLASS ( 30%)
PARTIALLY ALTERED,VARIOLITIC PLAG AND CPX*
Alteration - SMECTITE
Replacing: GLASS
Vesicles -
Size(mm): <.5
Percent: 10-15
Filling: CARB,ZEOL
CARB IS 5-10% OF ROCK,SOME VESICLES TO 2MM*
Leg : 49 Top/Bottom Interval(mm): 10/ 50 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 344.00 Rock Type: IGNEOUS
Core: 3 Sample Midpoint(m) : 348.53 Sect/Pc #: 4/PCE 1
ROCK = OL-PLAG SP MICROPHYRIC BASALT
FRESH;
Where sampled: GLASSY MARGIN;
Texture: SP MICROPHYRIC,GLASSY*
Phenocrysts- OLIVINE ( 1-5%)
PLAGIOCLASE ( 1-5%)
Groundmass - GLASS ( 94%)
FRESH;
OLIVINE ( 3%)
PLAGIOCLASE ( 3%)
Vesicles -
Filling: CARB
Leg : 49 Top/Bottom Interval(mm): 720/ 780 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 344.00 Rock Type: IGNEOUS
Core: 3 Sample Midpoint(m) : 349.25 Sect/Pc #: 4/PCE 12B
ROCK = APHYRIC BASALT;
Texture: GLASSY,APHYRIC*
Phenocrysts- OLIVINE ( <1%)
VERY ALTERED;
PLAGIOCLASE
Morphology: LATHS
Groundmass - GLASS ( 90%)
ALTERED*
Vesicles -
Size(mm): 1-3
Percent: 10
Filling: SMEC,CARB
VESICLES RIMMED WITH DK VOLCANIC GLASS
WHICH HAS BEEN ENRICHED WITH OP.MINS*
Leg : 49 Top/Bottom Interval(mm): 1160/1190 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 344.00 Rock Type: IGNEOUS
Core: 3 Sample Midpoint(m) : 349.68 Sect/Pc #: 4/PCE 10
ROCK = APHYRIC BASALT
EXT ALTERED;
Texture: VARIOLITIC,APHYRIC;
Where sampled: NEXT TO MARGIN*
Phenocrysts- OLIVINE ( <1%)
ALTERED*
Groundmass - GLASS
PLAG AND CPX VARIOLITES*
Alteration - SMECTITE
Replacing: OL
Vesicles -
Size(mm): <0.5
Percent: 5-10
Filling: SMEC,CARB
Leg : 49 Top/Bottom Interval(mm): 480/ 520 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 344.00 Rock Type: IGNEOUS
Core: 3 Sample Midpoint(m) : 350.50 Sect/Pc #: 5/PCE 6
ROCK = APHYRIC BASALT;
Texture: VARIOLITIC,INTERSERTAL;
Where sampled: NEXT TO MARGIN*
Groundmass - OLIVINE ( 5%)
Morphology: SUBHEDRAL
CLINOPYROXENE
Morphology: SKELETAL,SUBOPHITIC,
Morphology: DENDRITIC
PALE BROWN;
OPAQUE MINERALS
Vesicles -
Size(mm): <.1
Percent: 10
Leg : 49 Top/Bottom Interval(mm): 530/ 600 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 353.50 Rock Type: IGNEOUS
Core: 4 Sample Midpoint(m) : 354.07 Sect/Pc #: 1/PCE 4B
ROCK = APHYRIC BASALT;
Texture: VARIOLITIC,GLASSY,APHYRIC;
Where sampled: NEXT TO MARGIN*
Groundmass - PLAGIOCLASE ( 40%)
CLINOPYROXENE ( 20%)
Morphology: SHEAVES
RADIATING VARIOLITIC CLUSTERS;
GLASS ( 40%)
BROWN-GREEN,56% IS ALTERED;
OPAQUE MINERALS
Alteration - SMECTITE
Replacing: GLASS,GROUNDMASS
CHLOROPHAEITE
Replacing: GLASS
Vesicles -
Size(mm): <1
Filling: SMEC,CHLOROPH
Leg : 49 Top/Bottom Interval(mm): 1100/1150 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 353.50 Rock Type: IGNEOUS
Core: 4 Sample Midpoint(m) : 354.63 Sect/Pc #: 1/PCE 11 (1
ROCK = APHYRIC BASALT;
);
Texture: VARIOLITIC,GLASSY,APHYRIC*
Groundmass - GLASS ( 30%)
ALTERED,PLAG AND CPX VARIOLITES*
Alteration - SMECTITE
Replacing: GLASS
Vesicles -
Size(mm): 1
Percent: 5-10
Filling: SMEC
Location: VEIN
Filling: CARB
Leg : 49 Top/Bottom Interval(mm): 70/ 100 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 353.50 Rock Type: IGNEOUS
Core: 4 Sample Midpoint(m) : 355.09 Sect/Pc #: 2/PCE 2
ROCK = OL-PLAG SP MICROPHYRIC BASALT;
Texture: SP MICROPHYRIC,GLASSY*
Phenocrysts- OLIVINE ( <1%)
Morphology: EUHEDRAL,SUBHEDRAL
FRESH;
PLAGIOCLASE ( <1%)
FRESH*
Groundmass - GLASS
FRESH,ALTERED,DK BROWN*
Vesicles -
Size(mm): .2-3
Percent: 7-10
Filling: SMEC,CARB,ZEOL
ID UNCERTAIN FOR ZEOLITE,INSIDE WALLS OF SOME
VESICLES PARTLY COVERED WITH SMEC, SOME VESICLES
PARTLY FILLED BY CARB,CARB VEINS*
Leg : 49 Top/Bottom Interval(mm): 870/ 930 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 353.50 Rock Type: IGNEOUS
Core: 4 Sample Midpoint(m) : 355.90 Sect/Pc #: 2/PCE 16
ROCK = APHYRIC BASALT;
Texture: VARIOLITIC-INTERSERTAL;
Where sampled: NEXT TO MARGIN*
Groundmass - GLASS
ALTERED;
CLINOPYROXENE ( 40%)
PLAGIOCLASE ( 40%)
Vesicles -
Size(mm): 0.3
Percent: 10
Filling: SMEC,CARB,ZEOL
Leg : 49 Top/Bottom Interval(mm): 0/ 0 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 353.50 Rock Type: IGNEOUS
Core: 4 Sample Midpoint(m) : 356.50 Sect/Pc #: 3/PCE 4
ROCK = APHYRIC BASALT;
Texture: GLASSY*
Phenocrysts- OLIVINE ( <1%)
Morphology: SKELETAL
SOME GLOMEROPHYRIC AGGREGATES*
Groundmass - GLASS ( 100%)
DARK,FRESH,ALTERED,SOME PALAGONITIZED*
Alteration - PALAGONITE
Location: NEAR CARB Replacing: GLASS
Location: VEIN
YELLOW COLOR*
Vesicles -
Size(mm): 0.5-1.5
Percent: 5
Filling: SMEC,CARB
Leg : 49 Top/Bottom Interval(mm): 1300/1370 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 353.50 Rock Type: IGNEOUS
Core: 4 Sample Midpoint(m) : 357.84 Sect/Pc #: 3/PCE 18
ROCK = APHYRIC BASALT;
Texture: GLASSY,VARIOLITIC*
Phenocrysts- OLIVINE ( <1%)
ALTERED*
Groundmass - GLASS ( 60%)
OLIVINE ( TR%)
ALTERED;
PLAGIOCLASE ( 30%)
CLINOPYROXENE ( 10%)
Alteration - CARBONATE
Replacing: OL
Vesicles -
Filling: CARB
Leg : 49 Top/Bottom Interval(mm): 650/ 700 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 353.50 Rock Type: IGNEOUS
Core: 4 Sample Midpoint(m) : 358.68 Sect/Pc #: 4/PCE 7A
ROCK = APHYRIC BASALT
EXT ALTERED;
Where sampled: NEXT TO GLASSY MARGIN;
Texture: VARIOLITIC,GLASSY,APHYRIC*
Groundmass - GLASS ( 30%)
ALTERED,BROWN;
OLIVINE ( TR%)
PLAGIOCLASE ( 40%)
Morphology: ELONGATED
CLINOPYROXENE ( 30%)
Morphology: ELONGATED
MICROLITE
IN ALTERED GLASS*
Alteration - SMECTITE
Replacing: GLASS
CHLOROPHAEITE
Replacing: GLASS
PALAGONITE
Replacing: GLASS
Vesicles -
Size(mm): .5
Percent: 5-10
Filling: SMEC,CHLOROPH
Leg : 49 Top/Bottom Interval(mm): 690/ 760 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 363.00 Rock Type: IGNEOUS
Core: 5 Sample Midpoint(m) : 363.73 Sect/Pc #: 1/PCE 1
ROCK = OL SP MICROPHYRIC BASALT;
Texture: VARIOLITIC, SP MICROPHYRIC;
Where sampled: PILLOW MARGIN*
Phenocrysts- OLIVINE ( 1-5%)
FRESH;
PLAGIOCLASE ( 45%)
CLINOPYROXENE ( 20%)
Morphology: SHEAVES
Groundmass - GLASS ( 20%)
ALTERED*
Vesicles -
Size(mm): 0.3
Percent: 15
Filling: CARB,ZEOL
Leg : 49 Top/Bottom Interval(mm): 1270/1290 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 363.00 Rock Type: IGNEOUS
Core: 5 Sample Midpoint(m) : 364.28 Sect/Pc #: 1/PCE 19
ROCK = APHYRIC BASALT;
Texture: VARIOLITIC,GLASSY,APHYRIC;
Where sampled: NEXT TO GLASSY MARGIN*
Phenocrysts- OLIVINE ( <1%)
FRESH, VERY RARE;
PLAGIOCLASE ( <1%)
VERY RARE,FRESH*
Groundmass - GLASS ( 99%)
VERY ALTERED, GRAY BROWN*
Alteration - CARBONATE
Replacing: GLASS
ZEOLITE
Replacing: GLASS
Vesicles -
Size(mm): .2-2
Percent: 10
Filling: CARB,ZEOL
SOME VESICLES PARTLY OR COMPLETELY FILLED BY
CARB OR ZEOL*
Leg : 49 Top/Bottom Interval(mm): 400/ 420 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 363.00 Rock Type: IGNEOUS
Core: 5 Sample Midpoint(m) : 364.91 Sect/Pc #: 2/PCE 4
ROCK = APHYRIC BASALT;
Texture: VARIOLITIC,GLASSY,APHYRIC;
Where sampled: NEXT TO MARGIN*
Phenocrysts- OLIVINE ( <1%)
FRESH, ALTERED*
Groundmass - GLASS (40-50%)
PLAGIOCLASE ( 30%)
OPAQUE MINERALS ( 1%)
INCLUDES MAGN+ILMENITE*
Alteration - SMECTITE
Replacing: GLASS
CARBONATE ( 25%)
Replacing: GLASS
Vesicles -
Size(mm): .2-3
Percent: 15-20
Filling: CARB,ZEOL
SOME VESICLES FILLED COMPLETELY WITH CARB,SOME
PARTLY BY CARB AND ZEOL,SOME COMPLETELY BY ZEOL,
SOME BY DK VOLCANIC GLASS*
Leg : 49 Top/Bottom Interval(mm): 1050/1190 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 363.00 Rock Type: IGNEOUS
Core: 5 Sample Midpoint(m) : 365.62 Sect/Pc #: 2/PCE 14
ROCK = APHYRIC BASALT
SECTION TOO THIN;
Texture: VARIOLITIC,GLASSY,APHYRIC;
Where sampled: NEXT TO GLASSY MARGIN*
Groundmass - GLASS ( 50%)
ALTERED;
OLIVINE ( TR%)
PLAGIOCLASE
Morphology: VARIOLITIC
CLINOPYROXENE
MICROCRYSTALLINE*
Alteration - SMECTITE
Replacing: GLASS
PALAGONITE
Replacing: GLASS
CARBONATE
Location: VEINS
Vesicles -
Size(mm): 0.1
Percent: 10
Filling: SMEC,ZEOL,
Filling: CHLOROPH
ID UNCERTAIN FOR CHLOROPHAEITE*
Leg : 49 Top/Bottom Interval(mm): 380/ 450 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 363.00 Rock Type: IGNEOUS
Core: 5 Sample Midpoint(m) : 366.42 Sect/Pc #: 3/PCE 4
ROCK = APHYRIC BASALT;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE ( <1%)
FRESH,TRACE AMOUNT*
Groundmass - GLASS ( 30%)
GRAY BROWN,ALTERED;
OLIVINE ( TR%)
PLAGIOCLASE ( 40%)
CLINOPYROXENE ( 30%)
OPAQUE MINERALS ( 1%)
INCLUDES ILMENITE+MAGN*
Alteration - SMECTITE
Replacing: GLASS
CARBONATE
Replacing: GLASS
Vesicles -
Size(mm): 0.2-0.5
Percent: 1-3
Filling: SMEC,CARB
SOMETIMES FILLED BY SMEC, SOMETIMES BY CARB*
Leg : 49 Top/Bottom Interval(mm): 950/1060 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 363.00 Rock Type: IGNEOUS
Core: 5 Sample Midpoint(m) : 368.51 Sect/Pc #: 4/PCE 12
ROCK = OL-PLAG SP MICROPHYRIC BASALT;
VARIOLITIC-INTERSERTAL,SP MICROPHYRIC;
Where sampled: PILLOW MARGIN*
Phenocrysts- OLIVINE ( <1%)
FRESH;
PLAGIOCLASE ( <1%)
FRESH*
Groundmass - GLASS ( 25%)
ALTRED;
PLAGIOCLASE ( 55%)
CLINOPYROXENE ( 15%)
Vesicles -
Size(mm): 0.3
Percent: 15
Location: IN VEINS
Filling: CARB
Leg : 49 Top/Bottom Interval(mm): 0/ 0 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 372.50 Rock Type: IGNEOUS
Core: 6 Sample Midpoint(m) : 372.50 Sect/Pc #: 1/PCE 2A
ROCK = OL-PLAG SP PHYRIC BASALT;
Texture: INTERSERTAL,SP PHYRIC;
Where sampled: FLOW MARGIN*
Phenocrysts- OLIVINE ( <1%)
Size(mm): .2-1
GROWING ZONES;
PLAGIOCLASE ( <1%)
Size(mm): .2-1 Morphology: QUENCH
Groundmass - GLASS (80-99%)
FRESH,ALTERED;
PLAGIOCLASE ( 0-20%)
Vesicles -
Size(mm): .2-1.0
Percent: 3
Filling: CARB
Leg : 49 Top/Bottom Interval(mm): 1100/1120 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 372.50 Rock Type: IGNEOUS
Core: 6 Sample Midpoint(m) : 373.61 Sect/Pc #: 1/PCE 16
ROCK = OL-PLAG SP PHYRIC BASALT;
Texture: VARIOLITIC,INTERSERTAL,SP PHYRIC;
Where sampled: NEXT TO MARGIN*
Phenocrysts- OLIVINE ( <1%)
FRESH,ALTERED;
PLAGIOCLASE ( <1%)
FRESH*
Groundmass - GLASS ( 30%)
BROWN,ALTERED;
PLAGIOCLASE ( 40%)
CLINOPYROXENE ( 20%)
OPAQUE MINERALS ( 1%)
INCLUDES ILMENITE+MAGN*
Alteration - CARBONATE
Replacing: GLASS
SMECTITE
Replacing: GLASS
ZEOLITE
Replacing: GLASS
Vesicles -
Size(mm): <3
Percent: 10-15
Filling: SMEC,CARB,ZEOL
SOME VESICLES PARTLY OR COMPLETELY FILLED BY
CARB AND ZEOL,SOME VESICLES FILLED BY VOLCANIC
GLASS,SOME RIMMED WITH DARK GLASS*
Leg : 49 Top/Bottom Interval(mm): 1180/1260 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 372.50 Rock Type: IGNEOUS
Core: 6 Sample Midpoint(m) : 373.72 Sect/Pc #: 1/PCE 17
ROCK = APHYRIC BASALT;
Texture: VARIOLITIC,INTERSERTAL;
Where sampled: NEXT TO MARGIN*
Groundmass - OLIVINE
Morphology: EUHEDRAL
SOME AS INCLUSIONS IN PLAG MICROPHENOS,
GLOMEROPHYRIC AGGREGATES;
CLINOPYROXENE
GLOMEROPHYRIC AGGREGATES OF MICROPHENOS;
PLAGIOCLASE
GLOMEROPHYRIC AGGREGATES OF MICROPHENOS;
Alteration - SMECTITE
Replacing: GLASS
Vesicles -
Size(mm): 0.2
Percent: 1
Filling: SMEC,CARB
SOME VESICLES RIMMED WITH DK VOLCANIC GLASS
ENRICHED WITH OPAQUES,INSIDE WALLS OF SOME
VESICLES COMPLETELY FILLED BY SMEC AND CARB,
VEINS OF CARB AND ZEOL*
Leg : 49 Top/Bottom Interval(mm): 900/ 940 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 372.50 Rock Type: IGNEOUS
Core: 6 Sample Midpoint(m) : 374.92 Sect/Pc #: 2/PCE 13
ROCK = OL-PLAG SP MICROPHYRIC BASALT;
Texture: GLASSY*
Phenocrysts- OLIVINE ( <1%)
Size(mm): 0.2-0.8 Morphology: EUHEDRAL
GLOMEROPHYRIC AGGREGATES;
PLAGIOCLASE ( <1%)
GLOMEROPHYRIC AGGREGATES*
Groundmass - GLASS
FRESH,ALTERED,DK BROWN*
Alteration - SMECTITE
Replacing: GLASS
Vesicles -
Size(mm): 0.2-2.0
Percent: 5-7
Filling: SMEC,CARB
Leg : 49 Top/Bottom Interval(mm): 1220/1320 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 372.50 Rock Type: IGNEOUS
Core: 6 Sample Midpoint(m) : 375.27 Sect/Pc #: 2/PCE 17
ROCK = OL-PLAG SP MICROPHYRIC BASALT;
Texture: GLASSY,VARIOLITIC;
Where sampled: NEXT TO MARGIN*
Phenocrysts- OLIVINE ( <1%)
FRESH;
PLAGIOCLASE ( <1%)
FRESH*
Groundmass - GLASS
ALTERED,TURBID;
PLAGIOCLASE ( 40%)
CLINOPYROXENE ( 30%)
Morphology: SHEAVES
Vesicles -
Size(mm): .2
Percent: 20-25
Filling: SMEC
Leg : 49 Top/Bottom Interval(mm): 20/ 80 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 372.50 Rock Type: IGNEOUS
Core: 6 Sample Midpoint(m) : 375.55 Sect/Pc #: 3/PCE 1
ROCK = APHYRIC BASALT;
Texture: INTERSERTAL,APHYRIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE ( <1%)
GLOMEROPHYRIC AGGREGATES OF MICROPHENOS;
PLAGIOCLASE ( <1%)
GLOMEROPHYRIC AGGREGATES OF MICROPHENOS*
Groundmass - OLIVINE ( 1-5%)
PLAGIOCLASE ( 45%)
CLINOPYROXENE ( 30%)
Alteration - SMECTITE
Replacing: GLASS
CARBONATE
Replacing: GLASS
Vesicles -
Size(mm): .1-.2
Percent: 20
Filling: CARB
Leg : 49 Top/Bottom Interval(mm): 290/ 320 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 372.50 Rock Type: IGNEOUS
Core: 6 Sample Midpoint(m) : 375.81 Sect/Pc #: 3/PCE 4
ROCK = OL-PLAG SP PHYRIC BASALT;
Texture: GLASSY,SP PHYRIC BASALT;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE ( <1%)
PLAGIOCLASE ( <1%)
Groundmass - GLASS
FRESH, ALTERED,DARK*
Vesicles -
Size(mm): .2-.5
Percent: <1
Filling: CARB,ZEOL
SOME VESICLES PARTLY FILLED BY CARB ANDZEOL,
ZEOL HAVE RADIAL AGGREGATES OF SMALL PRISMATIC
XTLS*
Leg : 49 Top/Bottom Interval(mm): 840/ 860 Describer: DSDP microfilm
Hole: 410A Top of Core Depth(m) : 372.50 Rock Type: IGNEOUS
Core: 6 Sample Midpoint(m) : 376.35 Sect/Pc #: 3/PCE 12
ROCK = OL-PLAG SP MICROPHYRIC BASALT;
Texture: GLASSY, SP MICROPHYRIC BASALT;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE ( <1%)
FRESH,ALTERED;
PLAGIOCLASE ( <1%)
FRESH*
Groundmass - GLASS ( 35%)
ALTERED,YELLOW BROWN;
OLIVINE ( 5%)
PLAGIOCLASE ( 35%)
CLINOPYROXENE ( 25%)
OPAQUE MINERALS ( 1%)
INCLUDES MAGN+ILMENITE*
Alteration - SMECTITE
Replacing: GLASS
CARBONATE
Replacing: GLASS
Vesicles -
Size(mm): 0.3-2
Percent: 5-7
Filling: SMEC,CARB,ZEOL
SOME VESICLES PARTLY OR ENTIRELY FILLED WITH
CARB, SOME VESICLES FILLED WITH CARB AND ZEOL,
RARE VESICLES PARTLY FILLED WITH VOLCANIC GLASS
(DARK,FRESH), SMALL VESICLES AND INSIDE WALLS
OF SOME LARGE VESICLES COVERED WITH SMEC*
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