Leg : 49 Top/Bottom Interval(mm): 300/ 340 Describer: DSDP microfilm
Hole: 411 Top of Core Depth(m) : 74.00 Rock Type: IGNEOUS
Core: 1 Sample Midpoint(m) : 74.32 Sect/Pc #: 1/PCE 4
ROCK = OL-PLAG MICROPHYRIC BASALT
FRESH;
Texture: VARIOLITIC-INTERSERTAL,MICROPHYRIC;
Where sampled: NEXT TO GLASSY MARGIN*
Phenocrysts- OLIVINE ( 1-5%)
FRESH;
PLAGIOCLASE ( <1%)
FRESH*
Groundmass - GLASS ( 40%)
TURBID;
OLIVINE ( 1-5%)
PLAGIOCLASE ( 40%)
CLINOPYROXENE ( 1-10%)
MAY BE PRESENT ONLY AS DEVITRIFIED GLASS*
Vesicles -
Size(mm): 0.04-.15
Percent: 3
Filling: ZEOL,CELAD
Leg : 49 Top/Bottom Interval(mm): 780/ 820 Describer: DSDP microfilm
Hole: 411 Top of Core Depth(m) : 74.00 Rock Type: IGNEOUS
Core: 1 Sample Midpoint(m) : 74.80 Sect/Pc #: 1/PCE 8B
ROCK = OL PHYRIC BASALT
FRESH;
Texture: INTERSERTAL,PHYRIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE ( 10%)
FRESH*
Groundmass - OLIVINE ( 11%)
PLAGIOCLASE ( 42%)
CLINOPYROXENE ( 30%)
OPAQUE MINERALS ( 2%)
INCLUDES ILMENITE+MAGN;
SPINEL ( TR%)
GLASS ( 15%)
PERCENTAGES OBTAINED BY POINT COUNT*
Vesicles -
Size(mm): <1
Percent: <1
Leg : 49 Top/Bottom Interval(mm): 170/ 220 Describer: DSDP microfilm
Hole: 411 Top of Core Depth(m) : 81.50 Rock Type: IGNEOUS
Core: 2 Sample Midpoint(m) : 81.70 Sect/Pc #: 1/PCE 3
ROCK = OL-PLAG MICROPHYRIC BASALT;
Texture: VARIOLITIC-INTERGRANULAR,MICROPHYRIC;
Where sampled: NEXT TO MARGIN*
Phenocrysts- OLIVINE ( >5%)
FRESH*
PLAGIOCLASE ( 1-5%)
QUANTITY UNCERTAIN FOR PLAG*
Groundmass - OLIVINE ( 15%)
QUANTITY UNCERTAIN FOR OL;
PLAGIOCLASE ( 45%)
CLINOPYROXENE ( 45%)
OPAQUE MINERALS ( 1%)
INCLUDES ILMENITE+MAGN*
Vesicles -
Size(mm): 0.1
Percent: 2
Filling: CELAD
Leg : 49 Top/Bottom Interval(mm): 20/ 130 Describer: DSDP microfilm
Hole: 411 Top of Core Depth(m) : 81.50 Rock Type: IGNEOUS
Core: 2 Sample Midpoint(m) : 83.08 Sect/Pc #: 2/PCE 1
ROCK = OL PHYRIC BASALT
FRESH;
Texture: INTERSERTAL,PHYRIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE ( 10%)
FRESH*
Groundmass - OLIVINE ( 19%)
PLAGIOCLASE ( 35%)
CLINOPYROXENE ( 17%)
MAGNETITE ( 2%)
SPINEL ( TR%)
GLASS ( 28%)
PERCENTAGES ARRIVED AT BY POINT COUNT*
Vesicles -
Size(mm): <1
Percent: 1
Leg : 49 Top/Bottom Interval(mm): 440/ 460 Describer: DSDP microfilm
Hole: 411 Top of Core Depth(m) : 91.00 Rock Type: IGNEOUS
Core: 3 Sample Midpoint(m) : 91.45 Sect/Pc #: 1/PCE 7
ROCK = OL SP MICROPHYRIC BASALT;
Texture: VARIOLITIC,GLASSY,SP MICROPHYRIC;
Where sampled: NEXT TO GLASSY MARGIN*
Phenocrysts- OLIVINE ( 1-5%)
FRESH*
Groundmass - PLAGIOCLASE ( 15%)
GLASS ( 80%)
TURBID, ALTERED*
Vesicles -
Size(mm): .05-0.1
Percent: 5
Leg : 49 Top/Bottom Interval(mm): 960/1000 Describer: DSDP microfilm
Hole: 411 Top of Core Depth(m) : 91.00 Rock Type: IGNEOUS
Core: 3 Sample Midpoint(m) : 91.98 Sect/Pc #: 1/PCE 13
ROCK = OL MICROPHYRIC BASALT;
Texture: VARIOLITIC,INTERGRANULAR,MICROPHYRIC*
Phenocrysts- OLIVINE ( >5%)
Size(mm): >1
FRESH*
Groundmass - OLIVINE ( 5%)
PLAGIOCLASE ( 40%)
CLINOPYROXENE ( 40%)
Vesicles -
Size(mm): .05-0.3
Percent: 5
Leg : 49 Top/Bottom Interval(mm): 1250/1280 Describer: DSDP microfilm
Hole: 411 Top of Core Depth(m) : 91.00 Rock Type: IGNEOUS
Core: 3 Sample Midpoint(m) : 92.26 Sect/Pc #: 1/PCE 16
ROCK = OL-CPX-PLAG MICROPHYRIC BASALT;
Texture: INTERSERTAL,GLOMEROPHYRIC,MICROPHYRIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE ( 1-5%)
FRESH,GLOMEROPHYRIC AGGREGATES;
CLINOPYROXENE ( 1-5%)
PLAGIOCLASE ( 1-5%)
APPROX COMP AN65,FRESH,SOME ZONED,MOST HAVE SODIC
RIMS,GLOMEROPHYRIC AGGREGATES;
SPINEL ( TR%)
Size(mm): .03-.05 Morphology: EUHEDRAL
INCLUSIONS IN SOME OL MICROPHENOS,REDDISH BROWN,
PICOTITE SPINEL*
Groundmass - GLASS (60-70%)
ALTERED,GRAY;
PLAGIOCLASE ( 15%)
CLINOPYROXENE ( 10%)
OPAQUE MINERALS ( 1-3%)
INCLUDES MAGN+ILMENITE*
Alteration - SMECTITE
Replacing: GLASS
Vesicles -
Size(mm): 0.2-0.8
Percent: 10
Filling: SMEC
Leg : 49 Top/Bottom Interval(mm): 1340/1380 Describer: DSDP microfilm
Hole: 411 Top of Core Depth(m) : 91.00 Rock Type: IGNEOUS
Core: 3 Sample Midpoint(m) : 92.36 Sect/Pc #: 1/PCE 18
ROCK = PLAG-OL PHYRIC BASALT
ALTERED;
Texture: VARIOLITIC,INTERGRANULAR,INTERSERTAL,PHYRIC;
Where sampled: NEXT TO MARGIN*
Phenocrysts- PLAGIOCLASE ( 20%)
APPROX COMP AN65-70;
OLIVINE ( <1%)
FRESH,.2MM SMALLER THAN PLAG*
Groundmass - GLASS ( 15%)
ALTERED,TURID;
PLAGIOCLASE ( 25%)
CLINOPYROXENE ( 30%)
OPAQUE MINERALS ( 5%)
INCLUDES ILMENITE+MAGN*
Vesicles -
Size(mm): .05-0.1
Percent: 3
Filling: ZEOL,CELAD
Leg : 49 Top/Bottom Interval(mm): 600/ 700 Describer: DSDP microfilm
Hole: 411 Top of Core Depth(m) : 100.50 Rock Type: IGNEOUS
Core: 4 Sample Midpoint(m) : 101.15 Sect/Pc #: 1/PCE 8
ROCK = PLAG-OL PHYRIC BASALT;
Texture: PHYRIC*
Phenocrysts- OLIVINE ( <1%)
FRESH;
PLAGIOCLASE ( 22%)
FRESH*
Groundmass - OLIVINE ( 3%)
PLAGIOCLASE ( 18%)
CLINOPYROXENE ( 28%)
OPAQUE MINERALS ( 2%)
GLASS ( 26%)
PERCENTAGES OBTAINED BY POINT COUNT*
Vesicles -
Size(mm): <1
Percent: 2
Leg : 49 Top/Bottom Interval(mm): 90/ 110 Describer: DSDP microfilm
Hole: 411 Top of Core Depth(m) : 110.00 Rock Type: IGNEOUS
Core: 5 Sample Midpoint(m) : 110.10 Sect/Pc #: 1/PCE 2
ROCK = CPX-OL-PLAG SP MICROPHYRIC BASALT
ALTERED;
Where sampled: NEXT MARGIN;
Texture: VARIOLITIC,INTERGRANULAR,SP MICROPHYRIC*
Phenocrysts- CLINOPYROXENE ( 1-5%)
OLIVINE ( <1%)
FRE SH;
PLAGIOCLASE ( <1%)
FRESH*
Groundmass - OLIVINE ( 27%)
PRESENT IN TRACE AMOUNTS IN ORIGINAL ESTIMATE;
PLAGIOCLASE ( 54%)
CLINOPYROXENE ( 37%)
OPAQUE MINERALS ( 5%)
INCLUDES ILMENITE+MAGN,PERCENTAGES OBTAINED BY
POINT COUNT*
Vesicles -
Size(mm): .02
Percent: 6
5% VESICLES ARE .02 MM, ID UNKNOWN FOR FILLING*
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