Leg : 49 Top/Bottom Interval(mm): 700/ 740 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 72.00 Rock Type: IGNEOUS
Core: 7 Sample Midpoint(m) : 80.22 Sect/Pc #: 6/PCE 5
ROCK = PLAG SP MICROPHYRIC BASALT;
Where sampled: FLOW INTERIOR;
Texture: SUBOPHITIC,SP MICROPHYRIC*
Phenocrysts- PLAGIOCLASE ( 1-5%)
SP MICROPHENOS,APPROX COMP AN65,SOME HAVE
INCLUSIONS OF OL(PARTLY ALTERED TO SMEC)*
Groundmass - OLIVINE ( TR%)
ALTERED;
PLAGIOCLASE ( 35%)
CLINOPYROXENE ( 30%)
OPAQUE MINERALS ( 1-3%)
INCLUDES ILMENITE+MAGN;
GLASS ( 10%)
DARK BROWN,ALTERED*
Alteration - SMECTITE
Replacing: GLASS
Vesicles -
Size(mm): .2-.5
Percent: 20
Filling: SMEC,VOLCANIC
Filling: GLASS
GLASS IS DEVITRIFIED*
Leg : 49 Top/Bottom Interval(mm): 10/ 50 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 72.00 Rock Type: IGNEOUS
Core: 7 Sample Midpoint(m) : 81.03 Sect/Pc #: 7/PCE 1
ROCK = APHYRIC BASALT;
Where sampled: FLOW INTERIOR;
Texture: SUBOPHITIC,APHYRIC*
Phenocrysts- PLAGIOCLASE
APPROX COMP AN70*
Groundmass - OLIVINE ( TR%)
PLAGIOCLASE ( 40%)
CLINOPYROXENE ( 35%)
OPAQUE MINERALS ( 1-3%)
INCLUDES ILMENITE+MAGN;
GLASS ( 5%)
Alteration - SMECTITE
Replacing: GLASS
Vesicles -
Size(mm): .2-.8
Percent: 20
Filling: SMEC,OP.MINS,
Filling: VOLCANIC GLASS
FILLINGS RIMMING PART OF WALL*
Leg : 49 Top/Bottom Interval(mm): 900/ 950 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 72.00 Rock Type: IGNEOUS
Core: 7 Sample Midpoint(m) : 81.93 Sect/Pc #: 7/PCE 7
ROCK = APHYRIC BASALT;
Where sampled: FLOW INTERIOR;
Texture: SUBOPHITIC,APHYRIC*
Phenocrysts- PLAGIOCLASE
APPROX COMP AN68*
Groundmass - PLAGIOCLASE ( 40%)
CLINOPYROXENE ( 35%)
OPAQUE MINERALS
INCLUDES ILMENITE+MAGN;
GLASS ( 5%)
DARK BROWN GREEN*
Alteration - SMECTITE
Replacing: GLASS,PHENOS
Vesicles -
Size(mm): 0.2-1.5
Percent: 15-20
Location: UNEVEN DISTRI
Filling: SMEC,OP.MINS,
Location: BUTION
Filling: CELAD
OP.MINS PARTLY RIM VESICLES*
Leg : 49 Top/Bottom Interval(mm): 200/ 220 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 81.50 Rock Type: IGNEOUS
Core: 8 Sample Midpoint(m) : 81.71 Sect/Pc #: 1/PCE 2
ROCK = PLAG-CPX SP PHYRIC BASALT;
Where sampled: FLOW INTERIOR;
Texture: INTERGRANULAR,SP PHYRIC*
Phenocrysts- PLAGIOCLASE ( 1-5%)
ALTERED SLIGHTLY,APPROX COMP AN53-40;
CLINOPYROXENE ( <1%)
ALTERED SLIGHTLY*
Groundmass - GLASS ( 1-3%)
ALTERED;
PLAGIOCLASE ( 40%)
CLINOPYROXENE ( 40%)
Alteration - SMECTITE
Replacing: GLASS
ID UNCERTAIN FOR SMEC*
Vesicles -
Size(mm): .5-3
Percent: 20
Filling: SMEC,ZEOL
SMEC ALONG WALL, ZEOL 2ND LAYER IN, ID UNCERTAIN
FOR FILLINGS*
Leg : 49 Top/Bottom Interval(mm): 550/ 580 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 81.50 Rock Type: IGNEOUS
Core: 8 Sample Midpoint(m) : 82.07 Sect/Pc #: 1/PCE 6
ROCK = CPX-PLAG-OL MOD MICROPHYRIC BASALT;
Where sampled: FLOW INTERIOR;
Texture: INTERGRANULAR,GLOMEROPHYRIC AGGREGATES CPX+OL+
Piece #: *
Phenocrysts- OLIVINE ( <1%)
Size(mm): .7-1.2
CLINOPYROXENE ( 1-5%)
MICROPHENOS;
PLAGIOCLASE ( 1-5%)
APPROX COMP AN55,MICROPHENOS*
Groundmass - GLASS ( 10%)
ALTERED;
OLIVINE ( 1-5%)
Size(mm): .7-1.2
PLAGIOCLASE ( 35%)
CLINOPYROXENE ( 30%)
Alteration - SMECTITE
Replacing: GLASS
Vesicles -
Size(mm): .2-1
Percent: 20
Filling: SMEC,GLASS
ALONG VESICLE WALL IS LAYERED VOLCANIC GLASS AND
SMEC*
Leg : 49 Top/Bottom Interval(mm): 1150/1200 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 81.50 Rock Type: IGNEOUS
Core: 8 Sample Midpoint(m) : 82.68 Sect/Pc #: 1/PCE 13
ROCK = APHYRIC BASALT;
Where sampled: FLOW INTERIOR;
Texture: INTERGRANULAR,APHYRIC*
Phenocrysts- PLAGIOCLASE ( <1%)
Groundmass - GLASS ( 5%)
ALTERED;
OLIVINE ( 5%)
PLAGIOCLASE ( 35%)
CLINOPYROXENE ( 30%)
OPAQUE MINERALS ( 5%)
Morphology: SKELETAL
INCLUDES MAGN+ILMENITE,SOME ALTERED TO LEUCOX ? *
Vesicles -
Size(mm): 1-4
Percent: 20
Filling: SMEC,CARB
SOME VESICLES PARTLY FILLED BY SMEC*
Leg : 49 Top/Bottom Interval(mm): 40/ 60 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 91.00 Rock Type: IGNEOUS
Core: 9 Sample Midpoint(m) : 91.05 Sect/Pc #: 1/PCE 1
ROCK = APHYRIC BASALT;
Where sampled: FLOW INTERIOR;
Texture: INTERSERTAL,APHYRIC,FINE GRAINED,GLOMEROPHYRIC
AGGREGATES PLAG+OL+CPX*
Phenocrysts- PLAGIOCLASE ( <1%)
APPROX COMP AN70,MICROPHENOS*
Groundmass - GLASS ( 5%)
ALTERED;
OLIVINE ( 1-2%)
FRESH;
PLAGIOCLASE ( 35%)
CLINOPYROXENE ( 35%)
OPAQUE MINERALS ( 2-5%)
INCLUDES MAGN+ILMENITE*
Alteration - SMECTITE
Replacing: OL
Vesicles -
Size(mm): .2-3
Percent: 20
Filling: SMEC,CARB
SOME VESICLES PARTLY FILLED BY SMEC*
Leg : 49 Top/Bottom Interval(mm): 1300/1320 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 91.00 Rock Type: IGNEOUS
Core: 9 Sample Midpoint(m) : 92.31 Sect/Pc #: 1/PCE 17
ROCK = APHYRIC BASALT
FRESH;
Texture: SUBOPHITIC,APHYRIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE
APPROX COMP AN47*
Groundmass - PLAGIOCLASE ( 50%)
CLINOPYROXENE ( 40%)
OPAQUE MINERALS ( 10%)
INCLUDES ILMENITE+MAGN*
Vesicles -
Size(mm): 1
Percent: 2-5
Leg : 49 Top/Bottom Interval(mm): 1350/1400 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 91.00 Rock Type: IGNEOUS
Core: 9 Sample Midpoint(m) : 92.38 Sect/Pc #: 1/PCE 18
ROCK = APHYRIC BASALT;
Where sampled: FLOW INTERIOR;
Texture: INTERSERTAL,APHYRIC*
Groundmass - GLASS ( 35%)
ALTERED;
PLAGIOCLASE ( 30%)
APPROX COMP AN65-58,NORMAL ZONING;
CLINOPYROXENE ( 30%)
OPAQUE MINERALS ( 2%)
INCLUDES ILMENITE+MAGN*
Alteration - SMECTITE
Replacing: GLASS
ID UNCERTAIN FOR GLASS*
Vesicles -
Size(mm): <.5
Percent: 20
Filling: SMEC,ZEOL,CELAD
A FEW VESICLES 2-5MM,SMEC ALONG WALL,CELAD IS
2ND LAYER IN,ZEOLITE IS 3RD LAYER IN FROM WALL*
Leg : 49 Top/Bottom Interval(mm): 1450/1500 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 91.00 Rock Type: IGNEOUS
Core: 9 Sample Midpoint(m) : 93.97 Sect/Pc #: 2/PCE 19
ROCK = APHYRIC BASALT;
Where sampled: FLOW INTERIOR;
Texture: INTERSERTAL,APHYRIC,GLOMEROPHYRIC AGGREGATES
Piece #: +CPX+OL MICROPHENOS*
Phenocrysts- PLAGIOCLASE
APPROX COMP AN65*
Groundmass - GLASS ( 15%)
PLAGIOCLASE ( 35%)
CLINOPYROXENE ( 30%)
OPAQUE MINERALS ( 1%)
INCLUDES ILMENITE+MAGN*
Alteration - SMECTITE
Replacing: GLASS
Vesicles -
Size(mm): .2-4
Percent: 20
Filling: SMEC,GLASS
DEVITRIFIEDVOLCANIC GLASS IN VESICLES*
Leg : 49 Top/Bottom Interval(mm): 120/ 170 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 91.00 Rock Type: IGNEOUS
Core: 9 Sample Midpoint(m) : 94.14 Sect/Pc #: 3/PCE 2
ROCK = APHYRIC BASALT;
Texture: INTERGRANULAR,APHYRIC,GLOMEROPHYRIC AGGREGATES
Piece #: +CPX;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE
APPROX COMP AN50,MICROPHENOS*
Groundmass - GLASS ( 10%)
ALTERED DARK COLOR;
OLIVINE ( TR%)
PLAGIOCLASE ( 40%)
CLINOPYROXENE ( 35%)
OPAQUE MINERALS ( 1-3%)
INCLUDES ILMENITE+MAGN*
Alteration - SMECTITE
Replacing: GLASS
Vesicles -
Size(mm): .1-1
Percent: 10
Filling: SMEC,
Filling: VOLCANIC GLASS
VOLCANIC GLASS IS ALTERED,SMEC ALONG WALL OF
SOME VESICLES,VESICLE SIZE RARELY 2-4 MM*
Leg : 49 Top/Bottom Interval(mm): 800/ 860 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 91.00 Rock Type: IGNEOUS
Core: 9 Sample Midpoint(m) : 94.83 Sect/Pc #: 3/PCE 9
ROCK = APHYRIC BASALT;
Texture: SUBOPHITIC,INTERGRANULAR,APHYRIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE
APPROX COMP AN60*
Groundmass - GLASS ( 5%)
OLIVINE ( 5%)
PLAGIOCLASE ( 45%)
CLINOPYROXENE ( 40%)
OPAQUE MINERALS ( 1-3%)
INCLUDES ILMENITE+MAGN*
Vesicles -
Size(mm): .1-.4
Percent: 5
Filling: SMEC,CALCITE,
Filling: VOLCANIC GLASS
RARE 3MM SIZE, SOME VESICLES FILLED BY
DEVITRIFIED VOLCANIC GLASS*
Leg : 49 Top/Bottom Interval(mm): 1190/1220 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 91.00 Rock Type: IGNEOUS
Core: 9 Sample Midpoint(m) : 95.21 Sect/Pc #: 3/PCE 14
ROCK = APHYRIC BASALT;
Texture: SUBOPHITIC,INTERGRANULAR,APHYRIC,GLOMEROPHYRIC
AGGREGATES PLAG+CPX MICROPHENOS*
Phenocrysts- PLAGIOCLASE
APPROX COMP AN55,MICROPHENOS*
Groundmass - GLASS ( 5%)
ALTERED,BROWN;
OLIVINE ( TR%)
PLAGIOCLASE ( 45%)
CLINOPYROXENE ( 40%)
OPAQUE MINERALS ( 1-3%)
INCLUDES ILMENITE+MAGN*
Alteration - SMECTITE
Replacing: GLASS
Vesicles -
Size(mm): .2-1
Percent: 5
Filling: SMEC
SOME VESICLES PARTLY FILLED BY SMEC*
Leg : 49 Top/Bottom Interval(mm): 90/ 110 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 100.50 Rock Type: IGNEOUS
Core: 10 Sample Midpoint(m) : 100.60 Sect/Pc #: 1/PCE 2
ROCK = APHYRIC BASALT;
Texture: SUBOPHITIC,APHYRIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- CLINOPYROXENE ( <1%)
FRESH, MICROPHENOS;
PLAGIOCLASE ( <1%)
FRESH,MICROPHENOS*
Groundmass - GLASS ( 5%)
ALTERED,BROWN;
OLIVINE ( TR%)
PLAGIOCLASE ( 45%)
CLINOPYROXENE ( 35%)
OPAQUE MINERALS ( 3-5%)
INCLUDES ILMENITE+MAGN;
Alteration - SMECTITE
Replacing: GLASS
Vesicles -
Size(mm): .1-.7
Percent: 10
Filling: SMEC
SOME VESICLES PARTLY FILLED BY SMEC,VESICLES
RIMMED WITH ALTERED (TO SMECTITE) VOLCANIC GLASS*
Leg : 49 Top/Bottom Interval(mm): 1120/1140 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 100.50 Rock Type: IGNEOUS
Core: 10 Sample Midpoint(m) : 101.63 Sect/Pc #: 1/PCE 10
ROCK = APHYRIC BASALT;
Texture: INTERGRANULAR,INTERSERTAL,APHYRIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- CLINOPYROXENE ( <1%)
FRESH, MICROPHENOS, GLOMEROPHYRIC;
PLAGIOCLASE ( <1%)
FRESH,MICROPHENOS, GLOMEROPHYRIC;
Groundmass - GLASS ( <1%)
ALTERED;
PLAGIOCLASE ( 45%)
CLINOPYROXENE ( 40%)
OPAQUE MINERALS ( 1-5%)
INCLUDES ILMENITE+MAGN*
Vesicles -
Size(mm): .1-2
Percent: 5-10
Filling: SMEC,
Filling: VOLCANIC GLASS
SOME VESICLES PARTLY RIMMED WITH VOLCANIC GLASS
AND PARTLY FILLED BY IT,INSIDE WALLS OF SOME
PARTLY COVERED BY VERY RARE SMECTITE*
Leg : 49 Top/Bottom Interval(mm): 280/ 310 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 100.50 Rock Type: IGNEOUS
Core: 10 Sample Midpoint(m) : 102.30 Sect/Pc #: 2/PCE 3
ROCK = APHYRIC BASALT;
Where sampled: FLOW INTERIOR;
Texture: APHYRIC*
Phenocrysts- PLAGIOCLASE
APPROX COMP AN65;
Groundmass - GLASS ( 15%)
ALTERED,DARK;
PLAGIOCLASE ( 35%)
CLINOPYROXENE ( 25%)
OPAQUE MINERALS ( 5%)
INCLUDES MAGN+ILMENITE*
Alteration - SMECTITE
Replacing: GLASS
Vesicles -
Size(mm): .2-2
Percent: 25
Filling: SMEC
INSIDE WALLS OF SOME VESICLES PARTLY COVERED
BY SMEC,MOST PRTS OF VESICLES ARE EMPTY*
Leg : 49 Top/Bottom Interval(mm): 900/ 940 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 100.50 Rock Type: IGNEOUS
Core: 10 Sample Midpoint(m) : 102.92 Sect/Pc #: 2/PCE 10B
ROCK = PLAG-CPX-OL SP PHYRIC BASALT;
Where sampled: FLOW INTERIOR;
Texture: INTERGRANULAR,INTERSERTAL,SP PHYRIC*
Phenocrysts- OLIVINE ( <1%)
FRESH;
CLINOPYROXENE ( <1%)
FRESH,ZONED,GLOMEROPHYRIC;
PLAGIOCLASE ( 1-5%)
FRESH,APPROX COMP AN65*
Alteration - SMECTITE
Replacing: GROUNDMASS
Vesicles -
Size(mm): <5
Percent: 10
Filling: SMEC,GLASS
Leg : 49 Top/Bottom Interval(mm): 1360/1390 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 100.50 Rock Type: IGNEOUS
Core: 10 Sample Midpoint(m) : 103.38 Sect/Pc #: 2/PCE 16
ROCK = CPX-PLAG MOD PHYRIC BASALT;
Where sampled: FLOW INTERIOR;
Texture: INTERGRANULAR,INTERSERTAL,MOD PHYRIC*
Phenocrysts- CLINOPYROXENE ( 1-5%)
FRESH, ALTERED,MICROPHENOS;
PLAGIOCLASE ( 1-5%)
FRESH,ALTERED,MICROPHENOS*
Groundmass - GLASS ( 5%)
ALTERED;
PLAGIOCLASE ( 50%)
CLINOPYROXENE ( 40%)
SOME TWINNING;
OPAQUE MINERALS ( 2%)
INCLUDES MAGN+ILMENITE*
Alteration - SMECTITE
Replacing: GLASS
CARBONATE
Replacing: GROUNDMASS
Vesicles -
Size(mm): 2
Percent: 10
Filling: SMEC,GLASS
Leg : 49 Top/Bottom Interval(mm): 600/ 640 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 100.50 Rock Type: IGNEOUS
Core: 10 Sample Midpoint(m) : 104.12 Sect/Pc #: 3/PCE 4C
ROCK = OL-PLAG SP MICROPHYRIC BASALT;
Where sampled: FLOW INTERIOR;
Texture: MOD MICROPHYRIC*
Phenocrysts- OLIVINE ( <1%)
PLAGIOCLASE ( 1-5%)
MICROPHENOS*
Groundmass - OLIVINE ( 1-2%)
COMPLETELY ALTERED*
Vesicles -
Filling: SMEC
Leg : 49 Top/Bottom Interval(mm): 1300/1330 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 100.50 Rock Type: IGNEOUS
Core: 10 Sample Midpoint(m) : 104.82 Sect/Pc #: 3/PCE 13
ROCK = APHRYIC BASALT;
Where sampled: FLOW INTERIOR;
Texture: INTERSERTAL,APHYRIC*
Groundmass - GLASS
ALTERED;
PLAGIOCLASE ( 40%)
CLINOPYROXENE ( 40%)
OPAQUE MINERALS ( 5%)
INCLUDES ILMENITE+MAGN*
Alteration - SMECTITE
Replacing: GLASS
PARTS OF VESICLES RIMMED WITH VOLCANIC GLASS
WHICH IS ENRICHED BY OPAQUE MINERALS*
Leg : 49 Top/Bottom Interval(mm): 860/ 880 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 100.50 Rock Type: IGNEOUS
Core: 10 Sample Midpoint(m) : 105.87 Sect/Pc #: 4/PCE 9
ROCK = APHRYIC BASALT;
Where sampled: FLOW INTERIOR;
Texture: INTERGRANULAR,APHYRIC*
Groundmass - GLASS ( 2%)
ALTERED;
OLIVINE ( 5%)
PLAGIOCLASE ( 40%)
APPROX COMP AN65-50,NORMALLY ZONED;
Alteration - SMECTITE
Replacing: GLASS,OL
Vesicles -
Size(mm): 1-2
Percent: 7-10
Filling: ZEOLITE
Leg : 49 Top/Bottom Interval(mm): 1360/1380 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 100.50 Rock Type: IGNEOUS
Core: 10 Sample Midpoint(m) : 109.37 Sect/Pc #: 6/PCE 11
ROCK = APHRYIC BASALT;
Where sampled: FLOW INTERIOR;
Texture: SUBOPHITIC,INTERGRANULAR,COARSE-GRAINED,
APHYRIC*
Phenocrysts- PLAGIOCLASE
APPROX COMP AN55-45*
Groundmass - PLAGIOCLASE ( 50%)
CLINOPYROXENE ( 35%)
OPAQUE MINERALS ( 15%)
INCLUDES MAGN+ILMENITE*
Alteration - SMECTITE
Replacing: GLASS
Vesicles -
Size(mm): 1
Percent: 10
Filling: SMEC
Leg : 49 Top/Bottom Interval(mm): 40/ 60 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 100.50 Rock Type: IGNEOUS
Core: 10 Sample Midpoint(m) : 109.55 Sect/Pc #: 7/PCE 1
ROCK = APHRYIC BASALT
FRESH;
Where sampled: FLOW INTERIOR;
Texture: SUBOPHITIC,INTERSERTAL,APHYRIC*
Groundmass - GLASS ( >10%)
ALTERED;
PLAGIOCLASE ( 45%)
Size(mm): .1-1.0
APPROX COMP AN75,EARLY AND LATE PHASES - LATE
PHASE OFTEN HIGHLY ZONED;
CLINOPYROXENE ( 30%)
Size(mm): .1-1.0
OPAQUE MINERALS ( 5%)
Size(mm): .1-1.0 Morphology: SOME SKELETAL
INCLUDES MAGN+ILMENITE*
Alteration - SMECTITE
Replacing: GLASS
OPAQUE MINERALS
Replacing: GLASS
Vesicles -
Size(mm): .5
Percent: <5
Filling: SMEC
Leg : 49 Top/Bottom Interval(mm): 580/ 600 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 100.50 Rock Type: IGNEOUS
Core: 10 Sample Midpoint(m) : 111.59 Sect/Pc #: 8/PCE 7
ROCK = APHRYIC BASALT;
Texture: SUBOPHITIC (CPX+PLAG),INTERSERTAL (OL+PLAG),
APHYRIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( <1%)
FRESH,APPROX COMP AN70-80,MICROPHENOS,
GLOMEROPHYRIC*
Groundmass - GLASS ( <5%)
ALTERED,BROWN;
OLIVINE ( 10%)
Size(mm): .1-1.0
PLAGIOCLASE ( 35%)
Size(mm): .1-1.0
CLINOPYROXENE ( 30%)
Size(mm): .1-1.0
OPAQUE MINERALS ( 2%)
INCLUDES MAGN+ILMENITE*
Alteration - SMECTITE
Replacing: GLASS
Vesicles -
Size(mm): .5-1
Percent: 15
Filling: SMEC
Shape: ANGULAR
Leg : 49 Top/Bottom Interval(mm): 0/ 0 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 110.00 Rock Type: IGNEOUS
Core: 11 Sample Midpoint(m) : 110.00 Sect/Pc #: 1/PCE 6
ROCK = OL SP MICROPYRIC BASALT;
Texture: SUBOPHITIC,INTERGRANULAR,SP MICROPHYRIC,
COARSE-GRAINED;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE ( 1-5%)
PLAGIOCLASE
APPROX COMP AN60*
Groundmass - GLASS
ALTERED;
OLIVINE ( 5%)
PLAGIOCLASE ( 40%)
CLINOPYROXENE ( 30%)
GLASS ( 20%)
OPAQUE MINERALS ( 5%)
INCLUDES MAGN+ILMENITE*
Alteration - CHLORITE
Replacing: OL
Vesicles -
Size(mm): 1
Location: 3
Filling: CHLOROPH OR
Filling: EPIDOTE
ID UNCERTAIN*
Leg : 49 Top/Bottom Interval(mm): 800/ 820 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 110.00 Rock Type: IGNEOUS
Core: 11 Sample Midpoint(m) : 112.31 Sect/Pc #: 2/PCE 8A
ROCK = APHYRIC BASALT;
Texture: APHYRIC,COARSE-GRAINED;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE
APPROX COMP AN60*
Groundmass - OLIVINE
ALTERED;
PLAGIOCLASE ( 50%)
CLINOPYROXENE ( 30%)
OPAQUE MINERALS ( 20%)
INCLUDES MAGN+ILMENITE*
Alteration - SMECTITE
Replacing: GLASS,OL
CHLORITE
Replacing: OL
Vesicles -
Filling: SMEC
Leg : 49 Top/Bottom Interval(mm): 800/ 820 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 110.00 Rock Type: IGNEOUS
Core: 11 Sample Midpoint(m) : 113.81 Sect/Pc #: 3/PCE 2F
ROCK = PLAG SP PHYRIC BASALT;
Texture: SUBOPHITIC,INTERSERTAL,SP PHYRIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( 1-5%)
FRESH, APPROX COMP AN70-80;
CLINOPYROXENE ( <1%)
FRESH*
Groundmass - OLIVINE ( 5-10%)
PLAGIOCLASE ( 40%)
CLINOPYROXENE ( 35%)
OPAQUE MINERALS ( <5%)
INCLUDES MAGN+ILMENITE AS DUST IN GLASS*
Vesicles -
Size(mm): .5-1
Percent: 5-10
Filling: CARB
A BROWN AMORPHOUS MINERAL LINES AND FILLS
VESICLES*
Leg : 49 Top/Bottom Interval(mm): 380/ 400 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 110.00 Rock Type: IGNEOUS
Core: 11 Sample Midpoint(m) : 114.89 Sect/Pc #: 4/PCE 2A
ROCK = APHYRIC BASALT;
Texture: APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - OLIVINE
COMPLETELY ALTERED;
PLAGIOCLASE ( 45%)
CLINOPYROXENE ( 30%)
OPAQUE MINERALS ( 5%)
INCLUDES ILMENITE+MAGN;
GLASS ( 20%)
Alteration - SMECTITE
Replacing: GLASS,OL
Vesicles -
Size(mm): 1
Percent: 5-10
Filling: SMEC
Leg : 49 Top/Bottom Interval(mm): 0/ 0 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 119.50 Rock Type: IGNEOUS
Core: 12 Sample Midpoint(m) : 119.50 Sect/Pc #: 1/PCE 15B
ROCK = OL-PLAG-CPX MOD PHYRIC BASALT;
Texture: INTERGRANULAR,INTERSERTAL,MOD PHYRIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE ( 1-5%)
RARE GLOMEROPHYRIC;
CLINOPYROXENE ( <1%)
FRESH; GLOMEROPHYRIC,MICROPHENOS;
PLAGIOCLASE ( 1-5%)
FRESH,APPROX COMP AN60-55,GLOMEROPHYRIC,
MICROPHENOS*
Groundmass - GLASS ( 15%)
ALTERED;
OLIVINE ( TR%)
PLAGIOCLASE ( 40%)
CLINOPYROXENE ( 35%)
OPAQUE MINERALS ( <5%)
INCLUDES ILMENITE+MAGN*
Alteration - SMECTITE
Replacing: GLASS
CHLOROPHYLLITE
Replacing: GLASS
Vesicles -
Size(mm): .2-.8
Percent: 5
Filling: VOLCANIC GLASS,
Filling: SMEC,CALCITE,
Filling: ZEOL
ID UNCERTAIN FOR ZEOL*
Leg : 49 Top/Bottom Interval(mm): 480/ 550 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 119.50 Rock Type: IGNEOUS
Core: 12 Sample Midpoint(m) : 120.01 Sect/Pc #: 1/PCE 6
ROCK = PLAG MOD MICROPHYRIC BASALT
FRESH;
Texture: MOD MICROPHYRIC,INTERSERTAL,APHANITIC-
CRYPTOCRYSTALLINE;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( 1-5%)
FRESH,APPROX COMP AN60;
Groundmass - OLIVINE ( 10%)
FRESH;
PLAGIOCLASE ( 40%)
CLINOPYROXENE ( 30%)
ILMENITE ( TR%)
GLASS ( 20%)
Alteration - SMECTITE
Replacing: GLASS
CHLORITE
Replacing: GLASS
Vesicles -
Filling: SMEC,CARB
Leg : 49 Top/Bottom Interval(mm): 700/ 750 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 129.00 Rock Type: IGNEOUS
Core: 13 Sample Midpoint(m) : 129.72 Sect/Pc #: 1/PCE 9
ROCK = BASALTIC BRECCIA;
Where sampled: GLASSY MARGIN;
Texture: APHANITIC-CRYPTOCRYSTALLINE,PHYRIC*
Phenocrysts- OLIVINE ( 1-5%)
FRESH;
CLINOPYROXENE ( 1-5%)
FRESH;
PLAGIOCLASE ( >5%)
FRESH,ZONED*
Alteration - CARBONATE
Replacing: GLASS
ID UNCERTAIN FOR GLASS,COLOR IS BROWN*
Leg : 49 Top/Bottom Interval(mm): 0/ 0 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 129.00 Rock Type: IGNEOUS
Core: 13 Sample Midpoint(m) : 130.50 Sect/Pc #: 2/PCE 11
ROCK = BASALT GLASS;
Where sampled: GLASSY MARGIN;
Texture: GLASSY*
Phenocrysts- PLAGIOCLASE ( TR%)
OLIVINE ( TR%)
HIGHLY ALTERED*
Groundmass - GLASS
RECRYSTALLIZED*
Leg : 49 Top/Bottom Interval(mm): 1140/1210 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 129.00 Rock Type: IGNEOUS
Core: 13 Sample Midpoint(m) : 131.68 Sect/Pc #: 2/PCE 15
ROCK = BASALT GLASS;
Where sampled: GLASSY MARGIN;
Texture: APHANITIC-CRYPTOCRYSTALLINE,PHYRIC,GLASS*
Phenocrysts- PLAGIOCLASE ( 10%)
FRESH;
OLIVINE ( 5%)
Groundmass - GLASS
TRANSITION FROM MICROCRYSTALLINE-BLACK
GROUNDMASS TO GLASSY BROWN (1 CM THICK EACH),
FRESH TO ALTERED*
Alteration - ZEOLITE
Replacing: GLASS
GLASS GRADES FROM FRESH YELLOW TO GREEN YELLOW
TO BROWN*
Vesicles -
Size(mm): 1
Percent: 10-20
Filling: CARB,ZEOL
ID UNCERTAIN FOR CARB*
Leg : 49 Top/Bottom Interval(mm): 0/ 0 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 129.00 Rock Type: IGNEOUS
Core: 13 Sample Midpoint(m) : 132.00 Sect/Pc #: 3/PCE 5
ROCK = APHYRIC BASALT;
Where sampled: NEXT TO GLASSY MARGIN;
Texture: APHYRIC,VRIOLITIC,APHANITIC-CRYPTOCRYSTALLINE*
Groundmass - GLASS (10-20%)
ALTERED;
OLIVINE ( 5%)
Morphology: SUBHEDRAL
FRESH,SMALL;
PLAGIOCLASE ( 40%)
TWO PHASES;
CLINOPYROXENE ( 35%)
Alteration - SMECTITE
Replacing: GLASS
COLOR FROM BROWN TO BLACK*
Vesicles -
Size(mm): .1-1
Percent: >10
Filling: SMEC
LINES WALL ONLY*
Leg : 49 Top/Bottom Interval(mm): 520/ 590 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 138.50 Rock Type: IGNEOUS
Core: 14 Sample Midpoint(m) : 139.06 Sect/Pc #: 1/PCE 5
ROCK = APHYRIC BASALT;
Where sampled: FLOW INTERIOR;
Texture: SUBOPHITIC,INTERGRANULAR*
Groundmass - PLAGIOCLASE ( 40%)
CLINOPYROXENE ( 35%)
OPAQUE MINERALS ( 5%)
INCLUDES ILMENITE+MAGN;
GLASS ( 10%)
ALTERED*
Alteration - SMECTITE
Replacing: GLASS
ABUNDANT*
Vesicles -
Percent: 5-10
Filling: SMEC
Leg : 49 Top/Bottom Interval(mm): 1480/1520 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 138.50 Rock Type: IGNEOUS
Core: 14 Sample Midpoint(m) : 140.00 Sect/Pc #: 1/PCE 6
ROCK = APHYRIC BASALT;
Where sampled: NEXT TO GLASSY MARGIN;
Texture: VARIOLITIC,APHYRIC*
Groundmass - OLIVINE ( 5%)
PLAGIOCLASE ( 50%)
CLINOPYROXENE ( 30%)
OPAQUE MINERALS ( 5%)
INCLUDES MAGN+ILMENITE;
GLASS ( 10%)
Vesicles -
Size(mm): 1
Percent: 10
Leg : 49 Top/Bottom Interval(mm): 1320/1340 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 148.00 Rock Type: IGNEOUS
Core: 15 Sample Midpoint(m) : 149.33 Sect/Pc #: 1/PCE 16
ROCK = PLAG-OL MOD PHYRIC BASALT
FRESH;
Texture: VARIOLITIC,MOD PHYRIC,GLASSY;
Where sampled: NEXT TO GLASSY MARGIN*
Phenocrysts- OLIVINE ( <1%)
Size(mm): .5
SOME SUBOPHITIC;
Groundmass - GLASS ( 30%)
ALTERED;
OLIVINE ( <1%)
Size(mm): .01-0.1
PLAGIOCLASE ( 35%)
CLINOPYROXENE ( TR%)
ONLY VERY SMALL GRAINS*
Vesicles -
Size(mm): <3
Percent: >10
Filling: CARB
Shape: ELONGATE
Leg : 49 Top/Bottom Interval(mm): 350/ 370 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 148.00 Rock Type: IGNEOUS
Core: 15 Sample Midpoint(m) : 149.86 Sect/Pc #: 2/PCE 5
ROCK = OL SP MICROPHYRIC BASALT;
Texture: VARIOLITIC, SP MICROPHYRIC, SUBOPHITIC,
APHANITIC-CRYPTOCRYSTALLINE,GLASSY;
Where sampled: NEXT TO GLASSY MARGIN*
Phenocrysts- OLIVINE ( 5-10%)
Groundmass - GLASS ( 5-10%)
ALTERED;
OLIVINE ( 1-5%)
PLAGIOCLASE ( 35%)
CLINOPYROXENE ( 35%)
Alteration - CARBONATE
Replacing: OL
Vesicles -
Percent: 10
Filling: CARB,ALT.GLASS
ONLY SMALLER VESICLES FILLED WITH CALCITE*
Leg : 49 Top/Bottom Interval(mm): 620/ 650 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 148.00 Rock Type: IGNEOUS
Core: 15 Sample Midpoint(m) : 153.14 Sect/Pc #: 4/PCE 5A
ROCK = APHYRIC BASALT;
Texture: VARIOLITIC,GLASSY,APHYRIC,APHANITIC-
CRYPTOCRYSTALLINE;
Where sampled: NEXT TO GLASSY MARGIN*
Groundmass - GLASS ( 25%)
ALTERED;
OLIVINE ( 5%)
Size(mm): >.1
PLAGIOCLASE ( 30%)
Size(mm): .5 Morphology: NARROW LATHS
CLINOPYROXENE ( 10%)
Size(mm): <.1
OPAQUE MINERALS
Size(mm): <.1
INCLUDES ILMENITE+MAGN*
Alteration - CHLOROPHYLLITE
Replacing: GROUNDMASS
Vesicles -
Size(mm): .1-3
Percent: 30
Filling: SMEC,CARB
Filling: CHLOROPH
VERY THIN LINING CHLOROPHAEITE*
Leg : 49 Top/Bottom Interval(mm): 1220/1250 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 157.50 Rock Type: IGNEOUS
Core: 16 Sample Midpoint(m) : 158.74 Sect/Pc #: 1/PCE 8A
ROCK = APHYRIC BASALT;
Texture: SUBOPHITIC,INTERSERTAL,APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - OLIVINE ( TR%)
RELICT;
PLAGIOCLASE ( 40%)
CLINOPYROXENE ( 35%)
OPAQUE MINERALS ( 5%)
INCLUDES ILMENITE+MAGN*
GLASS ( 20%)
FRESH TO ALTERED*
Alteration - SMECTITE
Replacing: GLASS
Vesicles -
Size(mm): 1
Percent: 5
Leg : 49 Top/Bottom Interval(mm): 160/ 180 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 157.50 Rock Type: IGNEOUS
Core: 16 Sample Midpoint(m) : 159.17 Sect/Pc #: 2/PCE 1B
ROCK = APHYRIC BASALT;
Texture: APHYRIC, VARIOLITIC,SUBOPHITIC,HOLOCRYSTALLINE;
Where sampled: FLOW INTERIOR*
Groundmass - GLASS ( 1-2%)
Size(mm): .1-1
OLIVINE ( <5%)
Size(mm): .1-1
PLAGIOCLASE ( 45%)
Size(mm): .1-1
CLINOPYROXENE ( 35%)
Size(mm): .1-1
OPAQUE MINERALS ( 5%)
Size(mm): .1-1
INCLUDES MAGN+ILMENITE*
Alteration - SMECTITE
Replacing: GLASS
Vesicles -
Percent: 10
Filling: CARB,EPID
>5% CALCITE,ID UNCERTAINFOR EPIDOTE - IT IS A
GREEN HIGHLY PLEOCHROIC MINERAL*
Leg : 49 Top/Bottom Interval(mm): 360/ 380 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 167.00 Rock Type: IGNEOUS
Core: 17 Sample Midpoint(m) : 167.37 Sect/Pc #: 1/PCE 5A
ROCK = APHYRIC BASALT;
Texture: SUBOPHITIC,INTERSERTAL;
Where sampled: FLOW INTERIOR*
Groundmass - GLASS ( 10%)
ALTERED;
OLIVINE ( 5-10%)
Morphology: SUBHEDRAL
PLAGIOCLASE ( 40%)
CLINOPYROXENE ( 35%)
OPAQUE MINERALS ( 5%)
Morphology: SKELETAL
INCLUDES ILMENITE+MAGN*
Alteration - SMECTITE
Replacing: GLASS
Vesicles -
Size(mm): <1
Percent: >10
Filling: CARB,EPID,
Filling: CHLORPH
2-3% CALCITE,ID UNCERTAIN FOR EPIDOTE AND
CHLOROPH*
Leg : 49 Top/Bottom Interval(mm): 110/ 130 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 167.00 Rock Type: IGNEOUS
Core: 17 Sample Midpoint(m) : 168.62 Sect/Pc #: 2/PCE 1
ROCK = APHYRIC BASALT
EXTENSIVELY ALTERED;
Texture: APHYRIC,SUBOPHITIC,INTERGRANULAR;
Where sampled: FLOW INTERIOR*
Groundmass - PLAGIOCLASE ( 35%)
Size(mm): .1-1
CLINOPYROXENE ( 20%)
Size(mm): .1-1
OLIVINE
ALTERED TO SMEC AND CALCITE;
OPAQUE MINERALS ( 5%)
Size(mm): .1-1
INCLUDES ILMENITE+MAGN*
Alteration - SMECTITE ( 10%)
Replacing: OL
CALCITE ( 30%)
Replacing: OL
Vesicles -
Size(mm): 1-2
Percent: 5
Filling: SMEC,CARB,HEMA
ID UNCERTAIN FOR HEMATITE,SMEC ALONG THE WALL,
CARB ALONG THE WALL AND 2ND LAYER, HEMATITE
2ND LAYER IN FROM WALL*
Leg : 49 Top/Bottom Interval(mm): 1400/1500 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 176.50 Rock Type: IGNEOUS
Core: 18 Sample Midpoint(m) : 177.95 Sect/Pc #: 1/PCE 17
ROCK = APHYRIC BASALT;
Texture: APHYRIC,SUBOPHITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE
APPROX COMP AN60;
OLIVINE ( <1%)
Groundmass - OLIVINE
ALTERED;
PLAGIOCLASE ( 45%)
CLINOPYROXENE ( 40%)
COLORED;
OPAQUE MINERALS ( 3%)
INCLUDES MAGN+ILMENITE*
GLASS ( 12%)
Vesicles -
Filling: SMEC,PYR
Leg : 49 Top/Bottom Interval(mm): 0/ 0 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 176.50 Rock Type: IGNEOUS
Core: 18 Sample Midpoint(m) : 178.00 Sect/Pc #: 2/PCE 11A
ROCK = OL-CPX-PLAG SP MICROPHYRIC BASALT
MOD ALTERED;
Texture: INTERGRANULAR,SP MICROPHYRIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE ( <1%)
PARTIALLY ALTERED TO CALCITE + SMEC;
CLINOPYROXENE
FRESH;
PLAGIOCLASE ( 1-5%)
FRESH,APPROX COMP AN70*
Groundmass - PLAGIOCLASE ( 45%)
Size(mm): .1-1.0
CLINOPYROXENE ( 35%)
Size(mm): .1-1.0
OPAQUE MINERALS ( 2%)
Size(mm): .1-1.0
GLASS
ALTERED*
Alteration - SMECTITE ( 5%)
Replacing: GLASS,PHENOS,GROUNDMASS
CARBONATE
Replacing: PHENOS,GROUNDMASS
Vesicles -
Size(mm): 1-2
Percent: 3
Filling: SMEC,CARB
Leg : 49 Top/Bottom Interval(mm): 540/ 570 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 176.50 Rock Type: IGNEOUS
Core: 18 Sample Midpoint(m) : 180.06 Sect/Pc #: 3/PCE 6
ROCK = APHYRIC BASALT;
Texture: APHYRIC,SUBOPHITIC,GLASSY;
Where sampled: FLOW INTERIOR*
Groundmass - GLASS ( 30%)
PARTLY ALTERED TO SMEC;
OLIVINE
MAY HAVE BEEN ELIMINATED BY ALTERATION;
CLINOPYROXENE ( 35%)
OPAQUE MINERALS
INCLUDES ILMENITE+MAGN*
Alteration - SMECTITE
Replacing: GLASS
Vesicles -
Size(mm): .5
Percent: 5-10
Filling: SMEC,CARB
Size(mm): % SMEC
Percent: LINES
Location: WALL,CARB IS
Filling: 2ND LAYER IN*
Leg : 49 Top/Bottom Interval(mm): 1200/1250 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 176.50 Rock Type: IGNEOUS
Core: 18 Sample Midpoint(m) : 180.72 Sect/Pc #: 3/PCE 13
ROCK = PLAG-CPX-OL SP MICROPHYRIC BASALT;
Texture: INTERGRANULAR,SP MICROPHYRIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE ( <1%)
ALTERED;
CLINOPYROXENE ( 1-5%)
FRESH, ALTERED;
PLAGIOCLASE ( 1-5%)
FRESH*
Groundmass - OLIVINE ( 5%)
Size(mm): .1-1.0
CLINOPYROXENE ( 35%)
Size(mm): .1-1.0
PLAGIOCLASE ( 45%)
Size(mm): .1-1.0
OPAQUE MINERALS ( 5%)
Size(mm): .1-1.0
INCLUDES ILMENITE+MAGN*
Alteration - SMECTITE
Replacing: PHENOS,GROUNDMASS
CARBONATE
Replacing: PHENOS,GROUNDMASS
IDDINGSITE
Replacing: PHENOS
Vesicles -
Size(mm): 1.-2.5
Percent: 5
Filling: SMEC,CARB
SMEC LINES WALL,CARB IS 2ND LAYER IN*
Leg : 49 Top/Bottom Interval(mm): 200/ 230 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 176.50 Rock Type: IGNEOUS
Core: 18 Sample Midpoint(m) : 181.22 Sect/Pc #: 4/PCE 2
ROCK = OL-PLAG-CPX SP MICROPHYRIC BASALT
MOD ALTERED;
Texture: SUBOPHITIC,SP MICROPHYRIC*
Phenocrysts- PLAGIOCLASE ( <1%)
Size(mm): .1-1.0
NORMAL ZONATION,APPROX COMP AN70-64;
OLIVINE ( 1-5%)
Size(mm): .1-1.0
ALTERED,SOME FRESH MATERIAL REMAINS;
CLINOPYROXENE ( <1%)
Size(mm): .1-1.0
FRESH*
Groundmass - GLASS ( 10%)
ALTERED;
OLIVINE ( 10%)
Size(mm): .1-1.0
PLAGIOCLASE ( 35%)
Size(mm): .1-1.0
Alteration - SMECTITE ( 10%)
Replacing: PHENOS,GROUNDMASS
SERPENTINITE
Replacing: PHENOS
ID UNCERTAIN FOR SERP*
Vesicles -
Size(mm): 2-3
Percent: 10
Filling: SMEC
ALSO IN VEINS*
Leg : 49 Top/Bottom Interval(mm): 1000/1050 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 176.50 Rock Type: IGNEOUS
Core: 18 Sample Midpoint(m) : 182.03 Sect/Pc #: 4/PCE 11
ROCK = APHYRIC BASALT;
Texture: APHYRIC,SUBOPHITIC;
Where sampled: FLOW INTERIOR*
Groundmass - OLIVINE ( TR%)
PLAGIOCLASE ( 45%)
CLINOPYROXENE ( 35%)
OPAQUE MINERALS ( 5%)
INCLUDES MAGN+ILMENITE;
GLASS ( 15%)
Alteration - CARBONATE
Replacing: OL
Vesicles -
Size(mm): .2-0.5
Percent: 2
Filling: SMEC,CARB
SMEC LINES WALL,CARB IS NEXT LAYER IN*
Leg : 49 Top/Bottom Interval(mm): 150/ 200 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 186.00 Rock Type: IGNEOUS
Core: 19 Sample Midpoint(m) : 186.18 Sect/Pc #: CC/PCE 2
ROCK = OL-PLAG SP MICROPHYRIC BASALT;
Texture: GLASSY,MICROPHYRIC;
Where sampled: GLASSY MARGIN*
Phenocrysts- OLIVINE ( <1%)
PLAGIOCLASE ( <1%)
Groundmass - GLASS
FRESH,ALTERED*
Alteration - CARBONATE
Replacing: OL
Vesicles -
Size(mm): 0.2-1.
Percent: 3
Filling: CARB
Leg : 49 Top/Bottom Interval(mm): 530/ 600 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 195.50 Rock Type: IGNEOUS
Core: 20 Sample Midpoint(m) : 196.07 Sect/Pc #: 1/PCE 7
ROCK = APHYRIC BASALT;
Texture: VARIOLITIC,GLASSY,APHYRIC;
Where sampled: NEXT TO MARGIN*
Groundmass - GLASS ( 20%)
ALTERED;
OPAQUE MINERALS ( 5%)
Size(mm): .01-.1 Morphology: ELONGATED,BARBED
INCLUDES MAGN+ILMENITE*
Vesicles -
Size(mm): <1
Percent: 10
Leg : 49 Top/Bottom Interval(mm): 850/ 900 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 195.50 Rock Type: IGNEOUS
Core: 20 Sample Midpoint(m) : 196.38 Sect/Pc #: 1/
ROCK = OL-PLAG SP MICROPHYRIC BASALT
FRESH (RELATIVELY);
Texture: GLASSY,SP MICROPHYRIC;
Where sampled: GLASSY MARGIN*
Phenocrysts- OLIVINE ( 1-5%)
PLAGIOCLASE ( 1-5%)
Groundmass - GLASS
FRESH,ALTERED*
Leg : 49 Top/Bottom Interval(mm): 1450/1500 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 195.50 Rock Type: IGNEOUS
Core: 20 Sample Midpoint(m) : 196.97 Sect/Pc #: 1/PCE 21
ROCK = APHYRIC BASALT;
Texture: SUBVARIOLITIC,APHYRIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE
APPROX COMP AN60*
Groundmass - OLIVINE ( 1-5%)
ALTERED;
PLAGIOCLASE ( 45%)
CLINOPYROXENE ( 35%)
OTHER ( 20%)
Leg : 49 Top/Bottom Interval(mm): 70/ 100 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 205.00 Rock Type: IGNEOUS
Core: 21 Sample Midpoint(m) : 205.09 Sect/Pc #: 1/
ROCK = PLAG-OL-CPX SP MICROPHYRIC BASALT
FRESH;
Texture: SUBVARIOLITIC,MICROPHYRIC;
Where sampled: NEXT TO MARGIN*
Phenocrysts- PLAGIOCLASE ( >5%)
APPROX COMP AN70,FRESH;
OLIVINE ( 1-5%)
CLINOPYROXENE ( <1%)
FRESH;
Groundmass - PLAGIOCLASE ( 40%)
CLINOPYROXENE ( 35%)
GLASS ( 5%)
MAGN5
Alteration - SMECTITE
Replacing: GLASS
CHLOROPHAEITE
Replacing: GLASS,GROUNDMASS
ID UNCERTAIN FOR CHLOROPH REPLACING GLASS*
Vesicles -
Size(mm): .1-.5
Percent: <1
Leg : 49 Top/Bottom Interval(mm): 1000/1050 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 205.00 Rock Type: IGNEOUS
Core: 21 Sample Midpoint(m) : 206.03 Sect/Pc #: 1/PCE 11
ROCK = PLAG-CPX SP MICROPHYRIC BASALT;
Texture: INTERGRANULAR,SP MICROPHYRIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- CLINOPYROXENE ( 1-5%)
FRESH, ALTERED;
PLAGIOCLASE ( 1-5%)
FRESH,APPROX COMP AN65-60;
CLINOPYROXENE ( 1-5%)
FRESH,ALTERED*
Groundmass - GLASS ( 5%)
ALTERED;
OLIVINE ( 10%)
Morphology: SKELETAL (LATE)
STABLES MOD ALTERED;
PLAGIOCLASE ( 45%)
CLINOPYROXENE ( 40%)
OPAQUE MINERALS ( 3%)
INCLUDES MAGN+ILMENITE*
Alteration - SMECTITE ( 10%)
Replacing: GLASS,GROUNDMASS
CARBONATE
Location: GROUNDMASS
Vesicles -
Size(mm): 1
Percent: 2
Filling: SMEC,CARB
SMEC LINES WALL,CARB IS NEXT LAYER IN*
Leg : 49 Top/Bottom Interval(mm): 1450/1500 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 205.00 Rock Type: IGNEOUS
Core: 21 Sample Midpoint(m) : 206.47 Sect/Pc #: 1/PCE 16
ROCK = OL-PLAG-CPX MOD PHYRIC BASALT;
Texture: GLASSY,MOD PHYRIC;
Where sampled: GLASSY MARGIN*
Phenocrysts- OLIVINE ( 1-5%)
PLAGIOCLASE ( 1-5%)
APPROX COMP AN80;
CLINOPYROXENE ( 1-5%)
Groundmass - GLASS
FRESH, ALTERED*
Alteration - SMECTITE
Replacing: GLASS
CHLORITE
Replacing: GLASS
CLAY MINERALS
Replacing: GLASS
Leg : 49 Top/Bottom Interval(mm): 790/ 820 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 205.00 Rock Type: IGNEOUS
Core: 21 Sample Midpoint(m) : 207.31 Sect/Pc #: 2/PCE 9
ROCK = OL-PLAG-CPX SP PHYRIC BASALT;
Texture: VARIOLITIC, SP PHYRIC;
Where sampled: NEXT TO MARGIN*
Leg : 49 Top/Bottom Interval(mm): 1450/1500 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 205.00 Rock Type: IGNEOUS
Core: 21 Sample Midpoint(m) : 207.97 Sect/Pc #: 2/PCE 16
ROCK = APHYRIC BASALT;
Texture: SUBOPHITIC,APHYRIC,COARSE-GRAINED;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE
APPROX COMP AN70*
Groundmass - OLIVINE ( 3%)
FRESH;
PLAGIOCLASE ( 45%)
CLINOPYROXENE ( 35%)
OPAQUE MINERALS ( 10%)
INCLUDES MAGN+ILMENITE;
GLASS ( 10%)
Vesicles -
Size(mm): .5-1
Percent: 15
Leg : 49 Top/Bottom Interval(mm): 200/ 250 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 205.00 Rock Type: IGNEOUS
Core: 21 Sample Midpoint(m) : 208.22 Sect/Pc #: 3/PCE 3
ROCK = APHYRIC BASALT;
Texture: SUBVARIOLITIC,INTERSERTAL,APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - OLIVINE ( TR%)
PLAGIOCLASE ( 30%)
CLINOPYROXENE ( 25%)
COLORED;
Alteration - SMECTITE
Replacing: GLASS
Vesicles -
Size(mm): .2-.5
Percent: 2-3
Filling: SMEC,PYR,LEUCOX
Leg : 49 Top/Bottom Interval(mm): 1410/1440 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 205.00 Rock Type: IGNEOUS
Core: 21 Sample Midpoint(m) : 209.43 Sect/Pc #: 3/PCE 19
ROCK = APHYRIC BASALT;
Texture: VARIOLITIC,SUBOPHITIC,APHYRIC,COARSE GRAINED,
VERY FINE-GRAINED AROUND CAVITIES*
Groundmass - OLIVINE ( TR%)
PLAGIOCLASE ( 50%)
APPROX COMP AN72;
CLINOPYROXENE ( 30%)
OPAQUE MINERALS ( 5%)
GLASS ( 15%)
Vesicles -
Filling: SMEC,CALCITE
SMEC IS YELLOW*
Leg : 49 Top/Bottom Interval(mm): 530/ 570 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 214.50 Rock Type: IGNEOUS
Core: 22 Sample Midpoint(m) : 215.05 Sect/Pc #: 1/PCE 6
ROCK = PLAG-CPX-OL SP MICROPHYRIC BASALT
MOD ALTERED;
Texture: VARIOLITIC, SP MICROPHYRIC;
Where sampled: NEXT TO MARGIN*
Phenocrysts- OLIVINE ( <1%)
ALTERED;
CLINOPYROXENE ( <1%)
FRESH, ALTERED;
PLAGIOCLASE ( 1-5%)
Morphology: HOLLOW HOPPER (A FEW)
FRESH, ALTERED*
Groundmass - GLASS
ALTERED;
OLIVINE ( 5%)
Size(mm): .1-1
PLAGIOCLASE ( 40%)
Size(mm): .1-1
CLINOPYROXENE ( 30%)
Size(mm): .1-1
OPAQUE MINERALS ( 5%)
INCLUDES ILMENITE+MAGN*
Alteration - COMBINATION ( 20%)
Replacing: GLASS,GROUNDMASS,PHENOS
INCLUDES CALCITE+SMEC*
Vesicles -
Size(mm): 2-3
Percent: 15
Filling: SMEC,CARB,GLASS
SMEC AND GLASS LINE WALL,CARB IS 2ND LAYER IN
FROM WALL*
Leg : 49 Top/Bottom Interval(mm): 940/ 970 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 214.50 Rock Type: IGNEOUS
Core: 22 Sample Midpoint(m) : 215.46 Sect/Pc #: 1/PCE 10
ROCK = OL-PLAG SP MICROPHYRIC BASALT;
Texture: INTERGRANULAR, SP MICROPHYRIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE ( 1-5%)
PLAGIOCLASE ( 1-5%)
Alteration - CARBONATE
Replacing: GLASS
Vesicles -
Size(mm): 1-5
Percent: 10
Leg : 49 Top/Bottom Interval(mm): 300/ 350 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 224.00 Rock Type: IGNEOUS
Core: 23 Sample Midpoint(m) : 224.33 Sect/Pc #: 1/PCE 4
ROCK = PLAG-OL-CPX SP MICROPHYRIC BASALT;
;
Texture: VARIOLITIC, SP MICROPHYRIC;
Where sampled: NEXT TO MARGIN*
Phenocrysts- OLIVINE ( 1-5%)
Morphology: SKELETAL (SOME)
FRESH;
CLINOPYROXENE ( <1%)
FRESH;
PLAGIOCLASE ( >5%)
FRESH*
Alteration - CARBONATE
Replacing: GLASS
Vesicles -
Size(mm): 1-5
Percent: 10
Leg : 49 Top/Bottom Interval(mm): 140/ 170 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 233.50 Rock Type: IGNEOUS
Core: 24 Sample Midpoint(m) : 233.66 Sect/Pc #: 1/PCE 2
ROCK = APHYRIC BASALT
EXT ALTERED*
Texture: SUBVARIOLITIC,APHYRIC,INTERSERTAL*
Where sampled: NEXT TO MARGIN*
Groundmass - GLASS ( 5%)
ALTERED;
PLAGIOCLASE ( 35%)
Size(mm): .1-1.0
CLINOPYROXENE ( 25%)
Size(mm): .1-1.0
OPAQUE MINERALS ( 10%)
INCLUDES ILMENITE+MAGN*
Alteration - SMECTITE ( 25%)
Replacing: GROUNDMASS
Vesicles -
Size(mm): <5
Percent: 20
Filling: EMPTY
Leg : 49 Top/Bottom Interval(mm): 840/ 860 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 233.50 Rock Type: IGNEOUS
Core: 24 Sample Midpoint(m) : 234.35 Sect/Pc #: 1/PCE 9
ROCK = APHYRIC BASALT;
Texture: INTERSERTAL,APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - PLAGIOCLASE ( 40%)
OPAQUE MINERALS ( 5%)
INCLUDES MAGN+ILMENITE,MAGN-CORRODED;
CLINOPYROXENE ( 20%)
GLASS ( 35%)
Alteration - LEUCOXENE
Replacing: GLASS
ID UNCERTAIN FOR LEUCOXENE*
Vesicles -
Size(mm): 1-2
Percent: 5-10
Filling: SMEC,PYR,LEUCOX
Leg : 49 Top/Bottom Interval(mm): 0/ 0 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 233.50 Rock Type: IGNEOUS
Core: 24 Sample Midpoint(m) : 235.00 Sect/Pc #: 2/PCE 7
ROCK = APHYRIC BASALT;
Texture: SUBOPHITIC,COARSE GRAINED, APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - OLIVINE ( TR%)
PLAGIOCLASE ( 50%)
CLINOPYROXENE ( 35%)
COLORED*
Vesicles -
Size(mm): 1
Percent: 5-10
Leg : 49 Top/Bottom Interval(mm): 880/ 930 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 233.50 Rock Type: IGNEOUS
Core: 24 Sample Midpoint(m) : 238.91 Sect/Pc #: 4/PCE 7
ROCK = APHYRIC BASALT;
Texture: OPHITIC,APHYRIC,COARSE GRAINED;
Where sampled: FLOW INTERIOR*
Groundmass - OLIVINE ( TR%)
CLINOPYROXENE
COLORED*
Leg : 49 Top/Bottom Interval(mm): 670/ 730 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 233.50 Rock Type: IGNEOUS
Core: 24 Sample Midpoint(m) : 240.20 Sect/Pc #: 5/PCE 5B
ROCK = APHYRIC BASALT;
Texture: SUBOPHITIC,INTERSERTAL,APHYRIC
ALTERED IN PLACES TO GLASSY AND SUBVARIOLITIC*
Groundmass - OLIVINE ( 1-2%)
Size(mm): .01-1
PLAGIOCLASE ( 45%)
Size(mm): .01-1
APPROX COMP <AN60;
CLINOPYROXENE ( 30%)
Size(mm): .01-1
OPAQUE MINERALS ( 5%)
INCLUDES ILMENITE+MAGN*
Alteration - CHLOROPHAEITE
Replacing: OL,GLASS
ID UNCERTAIN FOR CHLOROPHAEITE;
SMECTITE
Replacing: GLASS
OPAQUE MINERALS
Replacing: GLASS
Vesicles -
Size(mm): .5
Percent: 5
Filling: EPID
ID UNCERTAIN FOR EPIDOTE*
Leg : 49 Top/Bottom Interval(mm): 650/ 710 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 233.50 Rock Type: IGNEOUS
Core: 24 Sample Midpoint(m) : 241.68 Sect/Pc #: 6/PCE 4B
ROCK = APHYRIC BASALT;
Texture: SUBOPHITIC,INTERSERTAL,APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - GLASS (10-15%)
OLIVINE ( RARE%)
PLAGIOCLASE ( 40%)
APPROX COMP <AN60;
CLINOPYROXENE ( 35%)
Size(mm): <1
OPAQUE MINERALS ( 5%)
Morphology: ELONGATED, BARBED
INCLUDES ILMENITE+MAGN*
Vesicles -
Size(mm): 0.5
Percent: 5-10
Filling: CHLOROPHAEITE
3-5% CHLOROPH*
Leg : 49 Top/Bottom Interval(mm): 850/ 860 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 243.00 Rock Type: IGNEOUS
Core: 25 Sample Midpoint(m) : 243.86 Sect/Pc #: 1/PCE 6
ROCK = CPX-PLAG MICROPHYRIC BASALT;
Texture: SUBOPHITIC,INTERGRANULAR,MICROPHYRIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- CLINOPYROXENE ( 10%)
Size(mm): .1-1
SECTION ZONATION,SLIGHT BROWN COLORATION;
PLAGIOCLASE
APPROX COMP AN60*
Groundmass - GLASS
ALTERED;
OLIVINE
PLAGIOCLASE ( 50%)
CLINOPYROXENE ( 30%)
OPAQUE MINERALS ( 3%)
INCLUDES ILMENITE+MAGN*
Alteration - SMECTITE
Replacing: GROUNDMASS
Vesicles -
Size(mm): 3-5
Percent: 5
Filling: EMPTY
Leg : 49 Top/Bottom Interval(mm): 330/ 360 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 243.00 Rock Type: IGNEOUS
Core: 25 Sample Midpoint(m) : 244.85 Sect/Pc #: 2/PCE 4
ROCK = APHYRIC BASALT;
Texture: SUBOPHITIC,APHYRIC,COARSE-GRAINED;
Where sampled: FLOW INTERIOR*
Groundmass - GLASS ( 5%)
ALTERED;
OLIVINE ( 0%)
PLAGIOCLASE ( 45%)
Size(mm): .1-1
CLINOPYROXENE ( 40%)
Size(mm): .1-1
OPAQUE MINERALS ( 5%)
Size(mm): .1-1
INCLUDES MAGN+ILMENITE,QUITE LARGE*
Alteration - CHLOROPHAEITE
Replacing: GLASS
BROWN-GREEN*
Vesicles -
Size(mm): <.5
Percent: 5-10
Filling: CHLOROPH
Leg : 49 Top/Bottom Interval(mm): 1400/1420 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 243.00 Rock Type: IGNEOUS
Core: 25 Sample Midpoint(m) : 245.91 Sect/Pc #: 2/PCE 15
ROCK = OL-PLAG SP MICROPHYRIC BASALT
FRESH;
Texture: VARIOLITIC, SP MICROPHYRIC;
Where sampled: NEXT TO MARGIN*
Phenocrysts- OLIVINE ( <1%)
PLAGIOCLASE ( <1%)
Morphology: ELONGATED
APPROX COMP AN80*
Groundmass - OLIVINE ( 2-5%)
PLAGIOCLASE ( 50%)
CLINOPYROXENE ( 30%)
OPAQUE MINERALS ( 5%)
INCLUDES MAGN+ILMENITE*
Vesicles -
Size(mm): .1-1
Percent: 20
Filling: SMEC
Leg : 49 Top/Bottom Interval(mm): 850/ 890 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 243.00 Rock Type: IGNEOUS
Core: 25 Sample Midpoint(m) : 246.87 Sect/Pc #: 3/PCE 9
ROCK = APHYRIC BASALT
MOD ALTERED;
Texture: VARIOLITIC, INTERGRANULAR,APHYRIC;
Where sampled: NEXT TO MARGIN*
Phenocrysts- PLAGIOCLASE
APPROX COMP AN55*
Groundmass - OLIVINE ( 5%)
Size(mm): .1-1.0
UNALTERED;
PLAGIOCLASE ( 50%)
Size(mm): .1-1.0
CLINOPYROXENE ( 40%)
Size(mm): .1-1.0
OPAQUE MINERALS ( 3%)
Size(mm): .1-1.0
INCLUDES MAGN+ILMENITE*
Alteration - SMECTITE
Replacing: GLASS,GROUNDMASS
CARBONATE
Replacing: GROUNDMASS
SERPENTINITE
Replacing: OL
ID UNCERTAIN FOR SERP*
Vesicles -
Size(mm): .5-2
Percent: 10
Filling: SMEC,CARB
SMEC LINES WALL,CARB IS 2ND LAYER IN,MOST EMPTY*
Leg : 49 Top/Bottom Interval(mm): 1300/1350 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 243.00 Rock Type: IGNEOUS
Core: 25 Sample Midpoint(m) : 247.33 Sect/Pc #: 3/PCE 14
ROCK = OL-PLAG-CPX SP MICROPHYRIC BASALT;
Texture: GLASSY,SP MICROPHYRIC;
Where sampled: GLASSY MARGIN*
Phenocrysts- OLIVINE ( 1-5%)
PLAGIOCLASE ( 1-5%)
APPOX COMP AN67;
CLINOPYROXENE ( <1%)
FRESH*
Groundmass - GLASS
FRESH,ALTERED*
Vesicles -
Filling: ZEOLITE
Leg : 49 Top/Bottom Interval(mm): 1020/1050 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 243.00 Rock Type: IGNEOUS
Core: 25 Sample Midpoint(m) : 248.54 Sect/Pc #: 4/PCE 11
ROCK = APHYRIC BASALT;
Texture: SUBVARIOLITIC,SUBOPHITIC,APHYRIC,INTERSERTAL
SUBVRIOLITIC IN PLACES ONLY;
Where sampled: FLOW INTERIOR*
Groundmass - GLASS (10-15%)
ALTERED;
OLIVINE ( 0%)
PLAGIOCLASE ( 45%)
CLINOPYROXENE ( 35%)
OPAQUE MINERALS ( 5%)
INCLUDES ILMENITE+MAGN*
Alteration - SMECTITE
Replacing: GLASS
CHLOROPHAEITE
Replacing: GLASS
Vesicles -
Size(mm): .5
Percent: 10
Filling: CARB,CHLORPH
PATCHES OF CARB OCCUR AS VESICLE FILLINGS*
Leg : 49 Top/Bottom Interval(mm): 300/ 320 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 252.50 Rock Type: IGNEOUS
Core: 26 Sample Midpoint(m) : 252.81 Sect/Pc #: 1/PCE 5
ROCK = PLAG-OL SP PHYRIC BASALT
MOD ALTERED;
Texture: VARIOLITIC,SP MICROPHYRIC;
Where sampled: NEXT TO MARGIN*
Phenocrysts- OLIVINE ( <1%)
FRESH;
PLAGIOCLASE ( 1-5%)
FRESH;
Groundmass - GLASS (15-20%)
VERY ALTERED;
OLIVINE ( 5%)
OPAQUE MINERALS ( 5%)
INCLUDES MAGN+ILMENITE*
Alteration - OPAQUE MINERALS
Replacing: GLASS
CHLOROPHAEITE
Replacing: GLASS
HEAVILY ALTERED TO BROWN*
Vesicles -
Size(mm): <3
Percent: 15-20
Filling: SMEC,CHLOROPH
CHLOROPH IS BROWN*
Leg : 49 Top/Bottom Interval(mm): 760/ 790 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 252.50 Rock Type: IGNEOUS
Core: 26 Sample Midpoint(m) : 253.28 Sect/Pc #: 1/PCE 8
ROCK = APHYRIC BASALT
MOD ALTERED;
Texture: INTERGRANULAR,INTERSERTAL,APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - GLASS
ALTERED;
PLAGIOCLASE ( 45%)
CLINOPYROXENE ( 30%)
OPAQUE MINERALS ( 5%)
INCLUDES ILMENITE+MAGN*
Alteration - COMBINATION ( 20%)
Replacing: GLASS,GROUNDMASS
INCLUDES SMEC+CALCITE;
LEUCOXENE
Replacing: OL
OL ALTERED TO LEUCOXENE THEN TO CALCITE*
Vesicles -
Size(mm): <5
Percent: 15
Filling: SMEC,CALCITE
SMEC LINES WALL,CALCITE IS 2ND LAYER IN*
Leg : 49 Top/Bottom Interval(mm): 1450/1500 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 252.50 Rock Type: IGNEOUS
Core: 26 Sample Midpoint(m) : 253.97 Sect/Pc #: 1/PCE 16
ROCK = APHYRIC BASALT;
Texture: GLASSY,APHYRIC;
Where sampled: GLASSY MARGIN*
Groundmass - GLASS
ALTERED,FRESH;
Vesicles -
Size(mm): 1-3
Percent: 10
Filling: SMEC,PYR,CARB
LATE PYRITE*
Leg : 49 Top/Bottom Interval(mm): 0/ 0 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 252.50 Rock Type: IGNEOUS
Core: 26 Sample Midpoint(m) : 254.00 Sect/Pc #: 2/PCE 4
ROCK = OL-PLAG SP MICROPHYRIC BASALT;
Texture: INTERSERTAL,FINE GRAINED,SP MICROPHYRIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE ( <1%)
ALTERED TO CALCITE*
PLAGIOCLASE ( <1%)
Groundmass - OLIVINE ( 3%)
ALTERED;
PLAGIOCLASE ( 25%)
CLINOPYROXENE ( 35%)
GLASS ( 37%)
TITANOMAGNETITE
IN GLASS*
Alteration - CALCITE
Replacing: OL
Vesicles -
Size(mm): <1
Percent: 10
Filling: SMEC,CARB,
Filling: LEUCOX
LEUCOXENE IS BLACK,CARB IS LATE*
Leg : 49 Top/Bottom Interval(mm): 0/ 0 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 262.00 Rock Type: IGNEOUS
Core: 27 Sample Midpoint(m) : 262.00 Sect/Pc #: 1/PCE 4
ROCK = APHYRIC BASALT;
Texture: VARIOLITIC,INTERGRANULAR,APHYRIC;
Where sampled: NEXT TO GLASSY MARGIN*
Groundmass - OLIVINE ( 5%)
PLAGIOCLASE ( 40%)
Size(mm): SWALLOWTAI Morphology: L,ELONGATED LATHS
SCARCE RESORPTION;
CLINOPYROXENE ( 30%)
Morphology: SHEAF-LIKE VARIOLES
OPAQUE MINERALS ( 5%)
INCLUDES MAGN+ILMENITE;
COMBINATION ( 25%)
INCLUDES SMEC+ALTERED GLASS;
Alteration - SMECTITE
Replacing: GLASS,GROUNDMASS
CARBONATE ( TR%)
Replacing: GROUNDMASS
Vesicles -
Size(mm): 2
Percent: 5
Filling: SMEC,GLASS
Leg : 49 Top/Bottom Interval(mm): 690/ 710 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 262.00 Rock Type: IGNEOUS
Core: 27 Sample Midpoint(m) : 262.70 Sect/Pc #: 1/PCE 8
ROCK = APHYRIC BASALT
FRESH;
Texture: INTERSERTAL,INTERGRANULAR,APHYRIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE
APPROX COMP AN60*
Groundmass - OLIVINE ( 5%)
FRESH;
PLAGIOCLASE ( 40%)
CLINOPYROXENE ( 30%)
GLASS ( 25%)
Vesicles -
Size(mm): .5-2.
Percent: 15
Filling: SMEC,CARB,CHLOR
Shape: ROUND
Leg : 49 Top/Bottom Interval(mm): 400/ 450 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 271.50 Rock Type: IGNEOUS
Core: 28 Sample Midpoint(m) : 271.93 Sect/Pc #: 1/PCE 5
ROCK = PLAG SP MICROPHYRIC BASALT
FRESH;
Texture: VARIOLITIC,GLASSY,SP MICROPHYRIC;
Where sampled: NEXT TO MARGIN*
Phenocrysts- PLAGIOCLASE ( 1-5%)
FRESH*
Groundmass - GLASS ( 10%)
ALTERED;
OLIVINE ( 0%)
PLAGIOCLASE ( 45%)
MAGNETITE ( 5%)
Morphology: BARBED
Alteration - CHLOROPHAEITE
Replacing: GLASS
Vesicles -
Size(mm): <0.5
Percent: <5
Filling: SMEC,CARB,
Filling: CHLOROPH
Leg : 49 Top/Bottom Interval(mm): 1450/1500 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 271.50 Rock Type: IGNEOUS
Core: 28 Sample Midpoint(m) : 272.97 Sect/Pc #: 1/PCE 18
ROCK = APHYRIC BASALT;
Texture: VARIOLITIC,APHYRIC;
Where sampled: NEXT TO MARGIN*
Phenocrysts- OLIVINE ( <1%)
FRESH;
PLAGIOCLASE ( <1%)
FRESH*
Groundmass - OLIVINE ( 5%)
Size(mm): .01-.1
GLASS ( 5%)
PLAGIOCLASE ( 5%)
Size(mm): .01-.1
CLINOPYROXENE ( 35%)
Size(mm): .01-.1
OPAQUE MINERALS ( 5%)
Size(mm): .01-.1
INCLUDES ILMENITE+MANG*
Alteration - SMECTITE
Replacing: GLASS,OL
SMEC? REPLACES PART OF OL
CHLOROPHAEITE
Replacing: GLASS
BROWN CHLOROPHAEITE*
Vesicles -
Size(mm): <3
Percent: 10-15
Filling: CARB,CHLOROPH
2-5% CARB*
Leg : 49 Top/Bottom Interval(mm): 550/ 580 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 281.00 Rock Type: IGNEOUS
Core: 29 Sample Midpoint(m) : 281.57 Sect/Pc #: 1/PCE 7
ROCK = APHYRIC BASALT;
Texture: INTERSERTAL,APHYRIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE
APPROX COMP AN55*
Groundmass - GLASS ( 50%)
FRESH,ALTERED;
OLIVINE
ALTERED TO CALCITE;
PLAGIOCLASE ( 30%)
CLINOPYROXENE ( 20%)
OPAQUE MINERALS ( TR%)
INCLUDES ILMENITE+MAGN, IN GLASS*
Alteration - CARBONATE ( RARE%)
Replacing: OL
Vesicles -
Percent: 10
Filling: SMEC,CARB,CHLOR
Shape: ROUND
Filling: SULFIDE
Leg : 49 Top/Bottom Interval(mm): 830/ 880 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 281.00 Rock Type: IGNEOUS
Core: 29 Sample Midpoint(m) : 281.86 Sect/Pc #: 1/PCE 12
ROCK = APHYRIC BASALT;
Texture: APHYRIC,GLASSY;
Where sampled: GLASSY MARGIN*
Phenocrysts- PLAGIOCLASE
APPROX COMP AN80;
OLIVINE
MICROPHENOS,IDDINGSITIZED*
Groundmass - GLASS
FRESH,ALTERED,BLACK COLOR;
OLIVINE ( 2%)
PLAGIOCLASE ( 30%)
FRESH?;
CLINOPYROXENE ( 25%)
ILMENITE ( 1%)
MAGNETITE ( 3%)
Alteration - SMECTITE
Replacing: GROUNDMASS
Vesicles -
Size(mm): .3-.5
Percent: 10-15
Filling: SMEC,CALCITE,
Filling: SULFIDE
CALCITE IS ABUNDANT,SULFIDE IS RARE*
Leg : 49 Top/Bottom Interval(mm): 240/ 260 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 290.50 Rock Type: IGNEOUS
Core: 30 Sample Midpoint(m) : 290.75 Sect/Pc #: 1/PCE 3
ROCK = APHYRIC BASALT
FRESH;
Texture: INTERSERTAL,APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - OLIVINE ( 5-10%)
PLAGIOCLASE (45-50%)
CLINOPYROXENE (30-40%)
OTHER ( 10%)
OPAQUE MINERALS ( 5%)
INCLUDES ILMENITE+MAGN*
Vesicles -
Filling: CARB
Leg : 49 Top/Bottom Interval(mm): 1040/1070 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 300.00 Rock Type: IGNEOUS
Core: 31 Sample Midpoint(m) : 301.06 Sect/Pc #: 1/PCE 14
ROCK = PLAG-CPX SP MICROPHYRIC BASALT
SLIGHTLY ALTERED;
Texture: INTERGRANULAR,SP MICROPHYRIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( 1-5%)
FRESH;
CLINOPYROXENE ( <1%)
FRESH*
Groundmass - OLIVINE ( TR%)
Size(mm): .1-1
PLAGIOCLASE ( 50%)
Size(mm): .1-1
CLINOPYROXENE ( 40%)
Size(mm): .1-1
OPAQUE MINERALS ( 5%)
INCLUDES MAGN+ILMENITE*
Alteration - SMECTITE ( 2%)
Replacing: GROUNDMASS
Vesicles -
Size(mm): .5
Percent: 3
Leg : 49 Top/Bottom Interval(mm): 40/ 70 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 300.00 Rock Type: IGNEOUS
Core: 31 Sample Midpoint(m) : 301.56 Sect/Pc #: 2/PCE 1
ROCK = OL-PLAG SP MICROPHYRIC BASALT;
Texture: SP MICROPHYRIC;
Where sampled: FLOW INTERIOR*
Leg : 49 Top/Bottom Interval(mm): 1380/1400 Describer: DSDP microfilm
Hole: 409 Top of Core Depth(m) : 309.50 Rock Type: IGNEOUS
Core: 32 Sample Midpoint(m) : 310.89 Sect/Pc #: 1/PCE 16
ROCK = APHYRIC BASALT
EXTENSIVELY ALTERED;
Texture: VARIOLITIC,APHYRIC;
Where sampled: NEXT TO MARGIN*
Groundmass - OLIVINE ( 3-5%)
Size(mm): .1-1
PLAGIOCLASE ( 20%)
Size(mm): .1-1 Morphology: LATHS,ELONGATED,SOME ARE
Morphology: HOLLOW HOPPER XTLS
CLINOPYROXENE ( 35%)
Size(mm): .1-1 Morphology: FEATHERY OR SHEAF-LIKE
Morphology: BUNDLES
OPAQUE MINERALS ( 5%)
Size(mm): .1-1
Alteration - SMECTITE ( 30%)
Replacing: GROUNDMASS
CALCITE ( 10%)
Replacing: GROUNDMASS
Vesicles -
Size(mm): 1-2
Percent: 5
Filling: SMEC
|
