Leg : 49 Top/Bottom Interval(mm): 0/ 0 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 281.50 Rock Type: IGNEOUS
Core: 31 Sample Midpoint(m) : 289.00 Sect/Pc #: 6/
ROCK = PLAG-CPX PHYRIC BASALT;
Texture: PHYRIC*
Phenocrysts- OLIVINE ( 0.3%)
ID UNCERTAIN;
PLAGIOCLASE ( 1%)
Size(mm): 0.1-0.4
APPROX COMP AN30,GLOMEROPHYRIC;
CLINOPYROXENE ( 3%)
Size(mm): 0.1-0.5
GLOMEROPHYRIC*
Groundmass - GLASS ( 89.7%)
GROUNDMASS BLACK AND GLASSY,NO MINERAL CAN BE
RECOGNIZED*
Leg : 49 Top/Bottom Interval(mm): 0/ 0 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 281.50 Rock Type: IGNEOUS
Core: 31 Sample Midpoint(m) : 291.05 Sect/Pc #: CC/
ROCK = PLAG-CPX-OL PHYRIC BASALT;
Texture: PHYRIC*
Phenocrysts- OLIVINE ( 1.%)
ALTERED;
PLAGIOCLASE ( 5%)
Size(mm): 0.2-0.4 Morphology: VERY ELONGATED
APPROX COMP AN74-50,ZONED AND SOMEWHAT ALTERED
TO SMECTITE;
CLINOPYROXENE ( 4%)
ZONED AND FREQUENTLY CORRODED,COLORLESS TO
SLIGHTLY YELLOW*
Groundmass - COMBINATION ( 90%)
INCLUDES PLAG+CPX+MAGN+ILMENITE+GLASS,GLASS FRESH
IN MANY PLACES AND BROWN*
Leg : 49 Top/Bottom Interval(mm): 0/ 0 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 291.00 Rock Type: IGNEOUS
Core: 32 Sample Midpoint(m) : 291.92 Sect/Pc #: CC/
ROCK = PLAG-CPX MICROPHYRIC BASALT;
Texture: MICROPHYRIC, APHANITIC*
Phenocrysts- OLIVINE ( TR%)
Size(mm): 0.2 Morphology: SUBHEDRAL
ALTERED;
PLAGIOCLASE ( 5%)
Size(mm): 0.1-0.3 Morphology: EUHEDRAL
APPROX COMP AN50-42, ZONED-SOME GLOMEROPHYRIC
ACCUMULATIONS;
CLINOPYROXENE ( 2-3%)
Size(mm): 0.1-0.2 Morphology: EUHEDRAL TO SUBHEDRAL
SOME GLOMEROPHYRIC ACCUMULATIONS*
Groundmass - GLASS
DEVITRIFIED;
OPAQUE MINERALS ( 1%)
MAGN?*
Leg : 49 Top/Bottom Interval(mm): 0/ 0 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 300.50 Rock Type: IGNEOUS
Core: 33 Sample Midpoint(m) : 300.60 Sect/Pc #: CC/PCE 1
ROCK = PLAG-OL MICROPHYRIC BASALT;
Texture: MICROPHYRIC, HYPOXTLLINE;
Phenocrysts- OLIVINE ( 4.4%)
Size(mm): 0.1
COMPLETELY ALTERED AND IDDINGSITIZED;
PLAGIOCLASE ( 6.8%)
Size(mm): 0.3
APPROX COMP AN68-55,ZONED;
CLINOPYROXENE ( 0.4%)
Groundmass - COMBINATION ( 88.4%)
INCLUDES OL + PLAG+CPX+MAGN+ILMENITE+GLASS,
GROUNDMASS VERY THIN,BLACK AND PARTLY XTLLINE
AND PARTLY GLASSY,RARE OPAQUES*
Alteration - SMECTITE
Replacing: OL
Leg : 49 Top/Bottom Interval(mm): 0/ 0 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 310.00 Rock Type: IGNEOUS
Core: 34 Sample Midpoint(m) : 310.10 Sect/Pc #: CC/PCE 1
ROCK = PLAG MOD MICROPHYRIC BASALT;
Texture: MICROPHYRIC, HOLOXTLLINE;
Phenocrysts- PLAGIOCLASE ( 7%)
FRESH*
Groundmass - PLAGIOCLASE ( >90%)
ALTERED*
Alteration - SMECTITE
Replacing: GLASS
Leg : 49 Top/Bottom Interval(mm): 0/ 1 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 310.00 Rock Type: IGNEOUS
Core: 34 Sample Midpoint(m) : 310.00 Sect/Pc #: CC/PCE 3
ROCK = APHYRIC BASALT;
Texture: SUBOPHITIC TO INTERSERTAL, APHYRIC;
Groundmass - PLAGIOCLASE ( 32.0%)
Size(mm): 0.2
OLIVINE ( 1.1%)
COMPLETELY ALTERED;
CLINOPYROXENE ( 21.1%)
Size(mm): 0.1
ALMOST COMPLETELY ALTERED;
MAGNETITE ( 6.2%)
Size(mm): 0.05
ILMENITE ( 1.2%)
Size(mm): 0.05
GLASS ( 38.%)
PYRITE ( 0.4%)
Alteration - SMECTITE
Replacing: OL,CPX
OL REPLACED BY SMEC*
AMYGDULES PRESENT*
Leg : 49 Top/Bottom Interval(mm): 0/ 0 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 319.50 Rock Type: IGNEOUS
Core: 35 Sample Midpoint(m) : 319.50 Sect/Pc #: 1/PCE 4B
ROCK = APHYRIC BASALT;
Texture: SUBOPHITIC TO HYALO-OPHITIC,APHYRIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE ( <1%)
Morphology: SUBHEDRAL
1 OR 2 MICROPHENOS PRESENT;
Groundmass - OLIVINE ( 3.0%)
Size(mm): 0.02
ALTERED TO SMEC;
PLAGIOCLASE ( 33.%)
Size(mm): 0.02-0.2 Morphology: ELONGATED
APPROX COMPAN70,NORMAL ZONING,ALBITE TWINNING;
CLINOPYROXENE ( 26.%)
MAGNETITE ( 4.%)
ILMENITE ( 0.8%)
GLASS ( 32.6%)
ALTERED TO SMEC;
Alteration - SMECTITE
Replacing: OL,GLASS
Leg : 49 Top/Bottom Interval(mm): 0/ 0 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 329.00 Rock Type: IGNEOUS
Core: 36 Sample Midpoint(m) : 329.00 Sect/Pc #: 1/PCE 1
ROCK = PLAG MOD MICROPHYRIC BASALT
HIGHLY ALTERED;
Texture: MOD MICROPHYRIC;
Phenocrysts- PLAGIOCLASE ( 5%)
Size(mm): 0.1-0.3 Morphology: PRISMATIC
Groundmass - OPAQUE MINERALS ( 1%)
Size(mm): <0.1
INCLUDES MAGN+ILMENITE*
Alteration - SMECTITE
Replacing: GROUNDMASS
Vesicles -
Filling: SMEC
Leg : 49 Top/Bottom Interval(mm): 0/ 1 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 329.00 Rock Type: IGNEOUS
Core: 36 Sample Midpoint(m) : 329.00 Sect/Pc #: 1/PCE 1
ROCK = PLAG-OL MOD MICROPHYRIC BASALT
EXTENSIVELY ALTERED;
Texture: MOD MICROPHYRIC;
Phenocrysts- PLAGIOCLASE
APPROX COMP AN70-58,NORMALLY ZONED;
OLIVINE
ALTERED TO SMEC*
Groundmass - PLAGIOCLASE
Morphology: NEEDLE-LIKE
GLASS ( <50%)
ALTERED;
OPAQUE MINERALS ( RARE%)
PYRITE
ALTERATION-FORMED FROM IRON IN GLASS*
Alteration - SMECTITE
Replacing: OL,GLASS
PYRITE
Replacing: GLASS
Vesicles -
Filling: CALCITE
Leg : 49 Top/Bottom Interval(mm): 0/ 0 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 329.00 Rock Type: IGNEOUS
Core: 36 Sample Midpoint(m) : 330.50 Sect/Pc #: 2/PCE 2A
ROCK = PLAG SP MICROPHYRIC BASALT
Texture: OPHITIC,GLOMEROPHYRIC,SP MICROPHYRIC*
Phenocrysts- PLAGIOCLASE ( TR%)
Size(mm): 1-2 Morphology: PRISMATIC
Groundmass - PLAGIOCLASE ( 45%)
Size(mm): 0.1-0.5 Morphology: PRISMATIC
CLINOPYROXENE ( 40%)
Size(mm): 0.1-0.7
SHOWS ZONING;
OPAQUE MINERALS ( 1%)
Size(mm): 0.05 Morphology: EQUANT
Alteration - SMECTITE ( 10%)
Leg : 49 Top/Bottom Interval(mm): 0/ 1 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 329.00 Rock Type: IGNEOUS
Core: 36 Sample Midpoint(m) : 330.50 Sect/Pc #: 2/PCE 2A
ROCK = PLAG SP PHYRIC BASALT;
Texture: SUBOPHITIC, SP PHYRIC*
Phenocrysts- PLAGIOCLASE ( RARE%)
APPROX COMP AN73*
Groundmass - OLIVINE
COMPLETELY ALTERED;
PLAGIOCLASE
ALTERED ALONG FRACTURES;
CLINOPYROXENE
ALTERED ALONG FRACTURES, SHOWS ZONING;
MAGNETITE
ILMENITE
GLASS
COMPLETELY ALTERED*
Alteration - CALCITE
Location: FRACTURES
SMECTITE
Replacing: OL,GLASS
Leg : 49 Top/Bottom Interval(mm): 0/ 0 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 329.00 Rock Type: IGNEOUS
Core: 36 Sample Midpoint(m) : 332.00 Sect/Pc #: 3/PCE 2C
ROCK = PLAG SP PHYRIC BASALT;
Texture: SUBOPHITIC, SP PHYRIC*
Phenocrysts- PLAGIOCLASE ( RARE%)
Size(mm): 1-2
APPROX COMP AN72,ZONED*
Groundmass - OLIVINE
ALTERED;
PLAGIOCLASE
APPROX COMP AN50-40;
CLINOPYROXENE
GLASS
PARTLY RECRYSTALLIZED IN PYX AND OPAQUES-ALTERED;
OPAQUE MINERALS
Alteration - SMECTITE
Replacing: OL,GLASS
Vesicles -
Filling: SMEC
Leg : 49 Top/Bottom Interval(mm): 0/ 0 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 338.50 Rock Type: IGNEOUS
Core: 37 Sample Midpoint(m) : 338.50 Sect/Pc #: 1/PCE 10B
ROCK = OL-PLAG SP PHYRIC BASALT;
Texture: SUBOPHITIC, SP PHYRIC*
Phenocrysts- OLIVINE ( 1%)
Size(mm): 0.2-0.5 Morphology: EUHEDRAL
COMPLETELY ALTERED;
PLAGIOCLASE ( <1%)
Size(mm): 0.5-1.0 Morphology: EUHEDRAL PRISMS
APPROX COMP AN76-66, ALBITE TWINNING*
Groundmass - OLIVINE ( 10%)
RICH IN OL BEFORE ALTERATION;
PLAGIOCLASE ( 35%)
CLINOPYROXENE ( 25%)
Size(mm): 0.05-0.2 Morphology: ANHEDRAL,PLUMOSE
OPAQUE MINERALS ( 1-2%)
Alteration - SMECTITE ( 30%)
Replacing: OL,GLASS
Leg : 49 Top/Bottom Interval(mm): 0/ 1 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 338.50 Rock Type: IGNEOUS
Core: 37 Sample Midpoint(m) : 338.50 Sect/Pc #: 1/PCE 9
ROCK = PLAG-OL SP PHYRIC BASALT;
Texture: SUBOPHITIC, SP PHYRIC*
Phenocrysts- OLIVINE ( 0.5%)
Size(mm): 0.5-1.0
ALTERED;
PLAGIOCLASE ( 0.7%)
Size(mm): 0.5-1.0 Morphology: EUHEDRAL PRISMS
APPROX COMP AN64-25*
Groundmass - OLIVINE ( 2%)
ALTERED;
PLAGIOCLASE ( 39.1%)
CLINOPYROXENE ( 24%)
MAGNETITE ( 2.1%)
ILMENITE ( 0.5%)
GLASS
COMPLETELY ALTERED;
PYRITE ( 0.5%)
Alteration - SMECTITE ( 30%)
Replacing: OL,GLASS
Vesicles -
Filling: CALCITE
Leg : 49 Top/Bottom Interval(mm): 0/ 0 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 338.50 Rock Type: IGNEOUS
Core: 37 Sample Midpoint(m) : 340.00 Sect/Pc #: 2/PCE 8A
ROCK = OL-PLAG SP PHYRIC BASALT;
Texture: SUBOPHITIC, SP PHYRIC,RATHER COARSE-GRAINED*
Phenocrysts- OLIVINE ( TR%)
Size(mm): 0.3
PLAGIOCLASE ( TR%)
Size(mm): 1.0
APPROX COMP AN72-60,NORMALLY ZONED*
Groundmass - OLIVINE ( TR%)
ALTERED;
PLAGIOCLASE ( 50%)
CLINOPYROXENE ( 40%)
OPAQUE MINERALS ( 3-5%)
INCLUDES MAGN+ILMENITE;
GLASS ( 5%)
PARTLY RECRYSTALLIZED INTO CPX AND OP.MINS*
Leg : 49 Top/Bottom Interval(mm): 0/ 0 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 348.00 Rock Type: IGNEOUS
Core: 38 Sample Midpoint(m) : 348.00 Sect/Pc #: 1/PCE 7
ROCK = PLAG-OL MOD PHYRIC BASALT;
Texture: SUBOPHITIC, MOD PHYRIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE ( 1%)
Size(mm): <1.0 Morphology: EQUANT
COMPLETELY ALTERED;
PLAGIOCLASE ( 2-3%)
Size(mm): 2.0 Morphology: SUBHEDRAL
APPROX COMP AN80-70,NORMALLY ZONED AND ALBITE
TWINNING*
Groundmass - OLIVINE ( <5%)
Morphology: SUBHEDRAL-INTERSERTAL TO PLAG
Morphology: GRAINS
ALTERED;
PLAGIOCLASE ( 45%)
Morphology: EQUANT LATHS,PARTIALLY
Morphology: RESORBED MARGINS
APPROX COMP AN60-50;
CLINOPYROXENE ( 35%)
Morphology: SUBOPHITIC
1% ALTERED CPX MICROPHENOS;
OPAQUE MINERALS ( 7-10%)
Morphology: SKELETAL AND BARBED
INCLUDES MAGN+ILMENITE;
GLASS ( 10%)
DEVITRIFIED AND RECRYSTALLIZED WITH SMALL FIBROUS
CRYSTALS;
HEMATITE
SECONDARY,VEIN FILLINGS,HYDROTHERMAL?*
Alteration - CHLORITE ( <10%)
Location: CENTER VEIN Replacing: OL,GLASS
Vesicles -
Percent: <5
Filling: CHLORITE
FIBROUS CHLORITE,AMYGULES*
Leg : 49 Top/Bottom Interval(mm): 0/ 0 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 348.00 Rock Type: IGNEOUS
Core: 38 Sample Midpoint(m) : 349.50 Sect/Pc #: 2/PCE 17 (O
ROCK = PLAG SP PHYRIC BASALT;
7?);
Texture: SUBOPHITIC, SP PHYRIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE
Morphology: EQUANT,RESORBED
APPROX COMP AN70, GRAINS IN SMALL CLUSTERS AND
ZONED*
Groundmass - OLIVINE ( 5%)
Morphology: EQUANT
PLAGIOCLASE ( 40%)
Morphology: LATHS
APPROX COMP AN50;
CLINOPYROXENE ( 35%)
Morphology: SUBOPHITIC
MAGNETITE ( 7-10%)
Morphology: ANHEDRAL,INTERSERTAL,SOME
Morphology: BARBED AND INTERGROWN
GLASS ( 5%)
RECRYSTALLIZED AND CLOUDY DUE TO HYDROTHERMAL
ALTERATION,SOME GREEN CHLORITE PATCHES*
Alteration - CHLORITE ( <10%)
Location: PATCHES Replacing: GLASS
Vesicles -
Filling: CHLORITE
GRANULAR CHLOR,THIN LINING OF VESICLE WALL*
Leg : 49 Top/Bottom Interval(mm): 880/ 900 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 348.00 Rock Type: IGNEOUS
Core: 38 Sample Midpoint(m) : 351.89 Sect/Pc #: 3/PCE 8
ROCK = APHYRIC BASALT;
Texture: SUBOPHITIC,APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - OLIVINE ( 5%)
Morphology: EQUANT
PLAGIOCLASE ( 40%)
Morphology: LATHS
CLINOPYROXENE ( 35%)
Morphology: ANHEDRAL,SUBOPHITIC
OPAQUE MINERALS ( 7-10%)
Morphology: ANHEDRAL,SOME ELONGATE AND
Morphology: BARBED
INCLUDES MAGN+ILMENITE;
GLASS ( <10%)
RECRYSTALLIZED AND CLOUDY*
Alteration - CHLORITE ( 5%)
Replacing: GLASS
ALTERATION TO CHLORITE- MOSTLY IN VESICLES*
Leg : 49 Top/Bottom Interval(mm): 880/ 901 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 348.00 Rock Type: IGNEOUS
Core: 38 Sample Midpoint(m) : 351.89 Sect/Pc #: 3/PCE 8
ROCK = APHYRIC BASALT;
Texture: SUBOPHITIC,APHYRIC*
Phenocrysts- PLAGIOCLASE ( TR%)
Size(mm): 0.8 Morphology: SUBHEDRAL
Groundmass - PLAGIOCLASE ( 30%)
Morphology: SUBHEDRAL
CLINOPYROXENE
OPAQUE MINERALS ( 10%)
OTHER ( 25%)
GROUNDMASS ? (GLASS?)*
Vesicles -
Size(mm): 0.4-0.6
Filling: PLAG,CPX
VESICLES FILLED WITH MATERIAL LIKE GROUNDMASS*
Percent: <5
Filling: CHLORITIC
Filling: MATERIAL
Leg : 49 Top/Bottom Interval(mm): 0/ 0 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 357.50 Rock Type: IGNEOUS
Core: 39 Sample Midpoint(m) : 357.50 Sect/Pc #: 1/PCE 4
ROCK = APHYRIC BASALT;
Texture: SUBOPHITIC,SUBVARIOLITIC,FINE-GRAINED,APHYRIC*
Phenocrysts- OLIVINE ( <1%)
1-5% MICROPHENOS EXISTED BEFORE ALTERATION*
Groundmass - PLAGIOCLASE ( 30%)
Morphology: PRISMATIC
APPROX COMP AN55;
CLINOPYROXENE ( 40%)
Size(mm): 0.05-0.1 Morphology: ANHEDRAL
LATE PYX'S ARE FE-TI RICH IN THE GLASS;
GLASS (20-25%)
OPAQUE MINERALS ( 1-2%)
Alteration - CHLORITE ( 5%)
Replacing: GROUNDMASS
ALTERATION TO CHLORITE AND LATE FIBROUS ? HIGHLY
BIREFRINGENT MINERAL*
Vesicles -
Filling: CHLOR
LINES VESICLE WALLS*
Leg : 49 Top/Bottom Interval(mm): 640/ 680 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 357.50 Rock Type: IGNEOUS
Core: 39 Sample Midpoint(m) : 359.66 Sect/Pc #: 2/PCE 6
ROCK = APHYRIC BASALT;
Texture: SUBOPHITIC,APHYRIC*
Groundmass - PLAGIOCLASE ( 40%)
Morphology: SUBHEDRAL
APPROX COMP AN60-54;
CLINOPYROXENE ( 35%)
Morphology: ANHEDRAL
OTHER ( 20%)
GROUNDMASS ? (GLASS ?);
OPAQUE MINERALS ( 10%)
INCLUDES MAGN + SULFIDE (?)*
Vesicles -
Percent: 3-5
Filling: SMEC,CLAY.MINS
LINE VESICLE WALLS*
Leg : 49 Top/Bottom Interval(mm): 470/ 510 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 357.50 Rock Type: IGNEOUS
Core: 39 Sample Midpoint(m) : 360.99 Sect/Pc #: 3/PCE 4
ROCK = APHYRIC BASALT;
Texture: SUBOPHITIC, RARE PLAG PHENOS, RELATIVELY COARSE
GRAINED, APHYRIC*
Phenocrysts- OLIVINE ( 1-5%)
MICROPHENOS;
PLAGIOCLASE ( TR%)
Size(mm): 1.0-2.0 Morphology: SUBHEDRAL
APPROX COMP AN72-68*
Groundmass - PLAGIOCLASE ( 45%)
Morphology: SUBHEDRAL
CLINOPYROXENE ( 30%)
Morphology: ANHEDRAL
OPAQUE MINERALS ( 5%)
INCLUDES MAGN+ILMENITE AS GRAINS AND DUST;
OTHER ( 25%)
GROUNDMASS (ALTERED GLASS ?)*
Alteration - SMECTITE
Replacing: GLASS
CHLORITE
Replacing: GLASS
LATER*
Vesicles -
Size(mm): 0.3-0.5
Filling: TITANAUGITE
Filling: +ILMENITE
Filling: "GROUNDMASS"
Filling: MATERIAL
Leg : 49 Top/Bottom Interval(mm): 200/ 260 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 367.00 Rock Type: IGNEOUS
Core: 40 Sample Midpoint(m) : 367.23 Sect/Pc #: 1/PCE 3
ROCK = OL-PLAG MOD MICROPHYRIC BASALT;
Texture: MOD MICROPHYRIC, HYALOPILITIC GROUNDMASS;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE ( 5%)
Size(mm): 0.1-0.2 Morphology: SUBHEDRAL
VERY ALTERED;
PLAGIOCLASE ( TR%)
Size(mm): 0.2-0.6 Morphology: SUBHEDRAL
APPROX COMP AN52;
CLINOPYROXENE ( 3%)
Morphology: SLIGHTLY RESORBED
Groundmass - PLAGIOCLASE ( 25%)
Size(mm): 0.1-0.2 Morphology: SUBHEDRAL
CLINOPYROXENE ( 15%)
Size(mm): 0.1-0.2 Morphology: SUBHEDRAL
ILMENITE
DUST;
OTHER ( 55%)
GROUNDMASS (GLASS ?)*
Alteration - SMECTITE
Replacing: OL
Leg : 49 Top/Bottom Interval(mm): 280/ 340 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 367.00 Rock Type: IGNEOUS
Core: 40 Sample Midpoint(m) : 367.31 Sect/Pc #: 1/PCE 4
ROCK = BASALTIC BRECCIA;
Texture: MOD MICROPHYRIC, GLASSY;
Where sampled: GLASSY MARGIN*
Phenocrysts- OLIVINE ( 3%)
Size(mm): 0.1-0.2
PLAGIOCLASE ( 2%)
Size(mm): 0.01-0.1 Morphology: ELONGATE
APPROX COMPAN54;
CLINOPYROXENE ( 2%)
Size(mm): 0.1-0.2
Groundmass - GLASS ( 93%)
CLEAR,BROWN*
Alteration - SMECTITE
Location: RIM Replacing: BASALT FRAGS
Leg : 49 Top/Bottom Interval(mm): 590/ 620 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 367.00 Rock Type: IGNEOUS
Core: 40 Sample Midpoint(m) : 367.61 Sect/Pc #: 1/PCE 7
ROCK = APHYRIC BASALT;
Texture: SUBVARIOLITIC, SUBOPHITIC,APHYRIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- CLINOPYROXENE ( <1%)
Morphology: RESORBED
1 GRAIN ONLY (INDICATES 2 GENERATIONS OF CPX)*
Groundmass - OLIVINE ( 5%)
Size(mm): 0.1
PLAGIOCLASE ( 20%)
Size(mm): 0.1
APPROX COMP AN54;
CLINOPYROXENE ( 15%)
Size(mm): 0.1
GLASS ( 60%)
OPAQUE MINERALS
Alteration - SMECTITE
Replacing: OL,GLASS
SMEC SLIGHTLY ALTERED;
CHLORITE
Replacing: OL,GLASS
CHLOR SLIGHTLY ALTERED*
Leg : 49 Top/Bottom Interval(mm): 680/ 740 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 367.00 Rock Type: IGNEOUS
Core: 40 Sample Midpoint(m) : 367.71 Sect/Pc #: 1/PCE 9
ROCK = APHYRIC BASALT;
Texture: SUBOPHITIC,APHYRIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( TR%)
Size(mm): 0.5 Morphology: EUHEDRAL
Groundmass - PLAGIOCLASE ( 40%)
Morphology: SUBHEDRAL
CLINOPYROXENE ( 30%)
OTHER
GROUNDMASS;
OPAQUE MINERALS ( 5%)
Vesicles -
Filling: SMEC,CLAY.MINS
Filling: CHLOR
Leg : 49 Top/Bottom Interval(mm): 0/ 50 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 376.50 Rock Type: IGNEOUS
Core: 41 Sample Midpoint(m) : 376.53 Sect/Pc #: 1/PCE 1
ROCK = PLAG-CPX-OL MICROPHYRIC BASALT
Texture: VITROPHYRIC, MICROPHYRIC;
Where sampled: GLASSY MARGIN*
Phenocrysts- OLIVINE ( 2%)
ALTERED EXCEPT IN GLASSY MARGIN;
PLAGIOCLASE ( 5%)
Size(mm): 0.1-0.5
CLINOPYROXENE ( 3%)
Size(mm): 0.1
Groundmass - GLASS
MARGIN CLEAR BUT GLASS AWAY FROM MARGIN IS BLACK*
Alteration - CLAY MINERALS
Replacing: GLASS
Leg : 49 Top/Bottom Interval(mm): 150/ 200 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 376.50 Rock Type: IGNEOUS
Core: 41 Sample Midpoint(m) : 376.68 Sect/Pc #: 1/PCE 3
ROCK = APHYRIC BASALT;
Texture: SUBOPHITIC, INTERGRANULAR,APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - OLIVINE ( 5%)
COMPLETELY ALTERED;
PLAGIOCLASE ( 40%)
APPROX COMP AN64-42,ALBITE TWINNING;
CLINOPYROXENE ( 25%)
TWO GENERATIONS OF CPX - LATER CPX BROWN AND
FE-TI RICH;
MAGNETITE ( 5%)
Morphology: DENDRITIC
GLASS ( 24%)
COMPLETELY ALTERED*
Alteration - CHLORITE
Replacing: GLASS, OL
Leg : 49 Top/Bottom Interval(mm): 600/ 660 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 376.50 Rock Type: IGNEOUS
Core: 41 Sample Midpoint(m) : 377.13 Sect/Pc #: 1/PCE 8
ROCK = APHYRIC BASALT;
Texture: SUBOPHITIC, INTERGRANULAR,APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - OLIVINE ( 5%)
COMPLETELY ALTERED;
PLAGIOCLASE ( 40%)
APPROX COMP AN64-50,ALBITE TWINNING;
CLINOPYROXENE ( 25%)
MAGNETITE ( 5%)
ILMENITE ( 1%)
GLASS ( 24%)
Alteration - CHLORITE
Replacing: OL
Leg : 49 Top/Bottom Interval(mm): 830/ 910 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 376.50 Rock Type: IGNEOUS
Core: 41 Sample Midpoint(m) : 377.37 Sect/Pc #: 1/PCE 11
ROCK = OL-CPX MICROPHYRIC BASALT;
Texture: MICROPHYRIC,HYALOCRYSTALLINE (GROUNDMASS);
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE ( 5%)
COMPLETELY ALTERED;
PLAGIOCLASE ( TR%)
Size(mm): 1.0
CLINOPYROXENE ( 5%)
Groundmass - PLAGIOCLASE ( 15%)
Size(mm): 0.1-0.5 Morphology: ELONGATED
APPROX COMP AN55-46;
OTHER
GROUNDMASS PARTIALLY GLASS,PARTIALLY XTLLINE*
Alteration - CHLORITE
Replacing: OL
Leg : 49 Top/Bottom Interval(mm): 970/1010 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 376.50 Rock Type: IGNEOUS
Core: 41 Sample Midpoint(m) : 377.49 Sect/Pc #: 1/PCE 12
ROCK = PLAG-CPX SP MICROPHYRIC BASALT;
Texture: MICROPHYRIC,INTERGRANULAR,INTERSERTAL;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( 1-5%)
APPROX COMP AN70-52,FRESH,NORMAL ZONING;
CLINOPYROXENE ( 1-5%)
FRESH AUGITE*
Groundmass - PLAGIOCLASE ( 30%)
Size(mm): 0.1-1.0
CLINOPYROXENE ( 40%)
Size(mm): 0.1-1.0
GLASS ( 20%)
ALTERED*
Alteration - SMECTITE
Replacing: GLASS
ID UNCERTAIN FOR GLASS AND SMEC*
Leg : 49 Top/Bottom Interval(mm): 870/ 890 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 386.00 Rock Type: IGNEOUS
Core: 42 Sample Midpoint(m) : 386.88 Sect/Pc #: 1/PCE 11
ROCK = APHYRIC BASALT;
Texture: INTERSERTAL,PARTLY GLASSY,APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - OLIVINE ( 5%)
ALTERED;
PLAGIOCLASE ( 40%)
APPROX COMP AN62,ALBITE TWINNING;
CLINOPYROXENE ( 25%)
MAGNETITE
Morphology: NEEDLE-LIKE
ILMENITE
Morphology: NEEDLE-LIKE
GLASS ( 25%)
PYRITE
FILLS CAVITIES AND CRACKS*
Alteration - SMECTITE
Replacing: GLASS
CHLORITE
Replacing: OL
Leg : 49 Top/Bottom Interval(mm): 1410/1430 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 386.00 Rock Type: IGNEOUS
Core: 42 Sample Midpoint(m) : 388.92 Sect/Pc #: 2/PCE 18
ROCK = PLAG-CPX-OL MICROPHYRIC BASALT;
Texture: MICROPHYRIC,GLOMEROPHYRIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE ( <1%)
Morphology: ANHEDRAL,SUBHEDRAL
ALTERED;
PLAGIOCLASE ( 7%)
Morphology: ANHEDRAL,SUBHEDRAL
FRESH-ZONED;
CLINOPYROXENE ( 1-5%)
Morphology: ANHEDRAL,SUBHEDRAL
FRESH,AUGITIC*
Groundmass - OLIVINE ( 30%)
PLAGIOCLASE ( 10%)
OPAQUE MINERALS
INCLUDES MAGN+ILMENITE;
GLASS ( 40%)
ALTERED*
Alteration - SMECTITE
Replacing: PHENOS,GROUNDMASS,
Replacing: GLASS
Vesicles -
Size(mm): <1
Percent: TR
Filling: SMEC
Leg : 49 Top/Bottom Interval(mm): 170/ 190 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 424.00 Rock Type: IGNEOUS
Core: 44 Sample Midpoint(m) : 424.18 Sect/Pc #: 1/PCE 2
ROCK = OL-PLAG MOD PHYRIC BASALT;
Texture: SUBOPHITIC,INTERGRANULAR,PHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - OLIVINE ( 15%)
COMPLETELY ALTERED;
PLAGIOCLASE ( 27%)
Size(mm): .01-.1
CLINOPYROXENE ( 20%)
Size(mm): .01-.1
MAGNETITE ( 4%)
ILMENITE ( 1%)
GLASS ( 35%)
ALTERED*
Alteration - SMECTITE
Replacing: GLASS,OL
CHLORITE
Replacing: GLASS,OL
Leg : 49 Top/Bottom Interval(mm): 0/ 0 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 433.50 Rock Type: IGNEOUS
Core: 45 Sample Midpoint(m) : 433.50 Sect/Pc #: 1/PCE 18
ROCK = OL MOD MICROPHYRIC BASALT;
Texture: INTERSERTAL, MOD MICROPHYRIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE ( >5%)
ALTERED*
Groundmass - OLIVINE ( 15%)
PLAGIOCLASE ( 25%)
CLINOPYROXENE ( 15%)
MAGNETITE ( 1%)
ILMENITE ( 4%)
GLASS ( 40%)
ALTERED*
Alteration - CARBONATE
Replacing: PHENOS
SMECTITE
Replacing: PHENOS,GROUNDMASS,GLASS
CHLORITE
Replacing: PHENOS
Vesicles -
Size(mm): 1
Percent: 3
Filling: PYRITE
Leg : 49 Top/Bottom Interval(mm): 0/ 0 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 433.50 Rock Type: IGNEOUS
Core: 45 Sample Midpoint(m) : 435.00 Sect/Pc #: 2/PCE 13,15
ROCK = PILLOW MARGIN;
Texture: VITROPHYRIC;
Where sampled: NEXT TO GLASSY MARGIN*
Phenocrysts- OLIVINE ( <1%)
ALTERED*
PLAGIOCLASE ( 1-5%)
FRESH;
Groundmass - PLAGIOCLASE ( 5%)
Size(mm): 0.1-1.0 Morphology: LATHS-SOME SWALLOWTAIL AND A
Morphology: FEW HOLLOW HOPPER TYPES
GLASS ( 90%)
ALTERED,THE FRESHEST GLASS IS PALE BROWN AND FULL
OF HYDRATION CRACKS,PALAGONITIZED*
Alteration - CARBONATE
Replacing: GLASS
PCES 13,15;
HEMATITE
Replacing: PHENOS
ID UNCERTAIN;
IDDINGSITE
Replacing: PHENOS
ID UNCERTAIN;
PALAGONITE
Replacing: GLASS
FERROUS OXIDE
Replacing: GLASS
Leg : 49 Top/Bottom Interval(mm): 400/ 420 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 433.50 Rock Type: IGNEOUS
Core: 45 Sample Midpoint(m) : 435.41 Sect/Pc #: 2/PCE 6A
ROCK = APHYRIC BASALT
ALTERED;
Texture: INTERSERTAL,APHYRIC;
Groundmass - OLIVINE ( 7%)
Size(mm): .01-0.1
ALTERED;
PLAGIOCLASE ( 25%)
Size(mm): .01-0.1
PARTLY ALTERED;
CLINOPYROXENE ( 17%)
Size(mm): .01-.1
MAGNETITE ( 5%)
Size(mm): .01-.1
ILMENITE ( 1%)
Size(mm): .01-.1
GLASS ( 45%)
Alteration - CARBONATE
Replacing: GLASS,GROUNDMASS,OL
CLAY MINERALS
Replacing: GROUNDMASS,GLASS
TREMOLITE
Replacing: OL,GROUNDMASS
CHLORITE
Replacing: OL,GROUNDMASS
Leg : 49 Top/Bottom Interval(mm): 0/ 0 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 433.50 Rock Type: IGNEOUS
Core: 45 Sample Midpoint(m) : 436.50 Sect/Pc #: 3/PCE 11
ROCK = OL-PLAG SP MICROPHYRIC BASALT;
Texture: INTERSERTAL,SP MICROPHYRIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE ( <5%)
ALTERED;
PLAGIOCLASE ( <1%)
APPROX COMP AN76-62,PARTIALLY ALTERED,ZONED*
Groundmass - OLIVINE ( 15%)
Size(mm): .01-.1
CLINOPYROXENE ( 15%)
Size(mm): .01-.1
PLAGIOCLASE ( 25%)
Size(mm): .01-.1
MAGNETITE ( 4%)
Size(mm): .01-.1
ILMENITE ( 1%)
Size(mm): .01-.1
GLASS ( 40%)
Alteration - CARBONATE
Replacing: PHENOS
SMECTITE
Replacing: PHENOS,GLASS,GROUNDMASS
PYRITE
Replacing: GLASS
CHLORITE
Replacing: GLASS,PHENOS
Leg : 49 Top/Bottom Interval(mm): 530/ 550 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 433.50 Rock Type: IGNEOUS
Core: 45 Sample Midpoint(m) : 438.54 Sect/Pc #: 4/PCE 8A
ROCK = OL-PLAG SP MICROPHYRIC BASALT
HIGHLY ALTERED;
Texture: INTERSERTAL,SP MICROPHYRIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE ( <5%)
ALTERED;
PLAGIOCLASE ( <1%)
ALTERED;
Groundmass - OLIVINE ( 15%)
Size(mm): .01-.1
PLAGIOCLASE ( 25%)
Size(mm): .01-.1
CLINOPYROXENE ( 5%)
Size(mm): .01-.1
GLASS ( 60%)
Vesicles -
Filling: SMEC,CHLOR
Leg : 49 Top/Bottom Interval(mm): 630/ 650 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 443.00 Rock Type: IGNEOUS
Core: 46 Sample Midpoint(m) : 443.64 Sect/Pc #: 1/PCE 5
ROCK = APHYRIC BASALT
ALTERED;
Texture: INTERSERTAL*
Groundmass - OLIVINE ( 7%)
Size(mm): .01-.1
PLAGIOCLASE ( 23%)
Size(mm): .01-.1
CLINOPYROXENE ( 15%)
Size(mm): .01-.1
GLASS ( 45%)
ALTERED*
Alteration - CARBONATE
Replacing: GROUNDMASS,GLASS
CLAY MINERALS
Replacing: GROUNDMASS,GLASS
CHLORITE
Replacing: GROUNDMASS,GLASS
Vesicles -
Size(mm): 1
Percent: 2
Filling: SMEC,CHLOR,CARB
SMEC ALONG WALL,CHLOR 2ND LAYER IN FROM WALL,
CARB 3RD LAYER IN FROM WALL*
Leg : 49 Top/Bottom Interval(mm): 590/ 610 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 443.00 Rock Type: IGNEOUS
Core: 46 Sample Midpoint(m) : 445.10 Sect/Pc #: 2/PCE 1F
ROCK = APHYRIC BASALT;
Texture: INTERSERTAL;
Where sampled: FLOW INTERIOR*
Groundmass - OLIVINE ( 7%)
PLAGIOCLASE ( 33%)
CLINOPYROXENE ( 15%)
GLASS ( 45%)
ALTERED*
Alteration - CARBONATE
Replacing: GROUNDMASS,GLASS
CLAY MINERALS
Replacing: GROUNDMASS,GLASS
CHLORITE
Replacing: GROUNDMASS,GLASS
Vesicles -
Size(mm): 1
Filling: SMEC,CHLOR,CARB
SMEC ALONG WALL,CHLOR 2ND LAYER IN FROM WALL,
CARB 3RD LAYER IN FROM WALL*
Leg : 49 Top/Bottom Interval(mm): 660/ 680 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 443.00 Rock Type: IGNEOUS
Core: 46 Sample Midpoint(m) : 446.67 Sect/Pc #: 3/PCE 4A
ROCK = OL-PLAG-CPX MICROPHYRIC BASALT
ALTERED;
Texture: APHANITIC-CRYPTOXTALLINE,MICROPHYRIC*
Phenocrysts- OLIVINE ( >5%)
ALTERED;
PLAGIOCLASE ( >5%)
PARTIALLY ALTERED;
CLINOPYROXENE ( 1-5%)
AUGITIC*
Groundmass - OLIVINE ( 15%)
PLAGIOCLASE ( 15%)
CLINOPYROXENE ( 5%)
GLASS ( 65%)
ALTERED*
Alteration - CARBONATE
Replacing: PHENOS
SMECTITE
Replacing: PHENOS,GLASS
CHLORITE
Replacing: PHENOS
FERROUS OXIDE
Replacing: GLASS
Vesicles -
Filling: CARB
Leg : 49 Top/Bottom Interval(mm): 680/ 720 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 443.00 Rock Type: IGNEOUS
Core: 46 Sample Midpoint(m) : 448.20 Sect/Pc #: 4/PCE 4
ROCK = APHYRIC BASALT
ALTERED;
Texture: INTERSERTAL,APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - OLIVINE ( 5%)
PLAGIOCLASE ( 15%)
CLINOPYROXENE ( 5%)
GLASS ( 80%)
ALTERED*
Alteration - CARBONATE
Replacing: GROUNDMASS,GLASS,VEIN
Replacing: MINERALS
SMECTITE
Replacing: GROUNDMASS
CHLORITE
Replacing: GROUNDMASS,GLASS
Vesicles -
Size(mm): 1
Percent: TR
Filling: CARB,PYR
TRACE ONLY OF PYR*
Leg : 49 Top/Bottom Interval(mm): 440/ 460 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 452.50 Rock Type: IGNEOUS
Core: 47 Sample Midpoint(m) : 452.95 Sect/Pc #: 1/PCE 1C
ROCK = APHYRIC BASALT
Texture: SUBOPHITIC, INTERSERTAL,COARSE-GRAINED,APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - OLIVINE
ALTERED;
PLAGIOCLASE ( 25%)
CLINOPYROXENE ( 20%)
VERY FE-TI RICH (COLORED);
MAGNETITE ( 5%)
ILMENITE ( 1%)
GLASS ( 37%)
Alteration - CARBONATE
Replacing: OL,GLASS
CHLORITE
Replacing: OL,GLASS
Leg : 49 Top/Bottom Interval(mm): 650/ 680 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 452.50 Rock Type: IGNEOUS
Core: 47 Sample Midpoint(m) : 453.17 Sect/Pc #: 1/PCE 2
ROCK = OL-PLAG-CPX PHYRIC BASALT;
Texture: SUBOPHITIC, PHYRIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE ( >5%)
ALTERED;
PLAGIOCLASE ( >5%)
MOSTLY FRESH;
CLINOPYROXENE ( >5%)
AUGITIC*
Groundmass - OLIVINE ( 10%)
Size(mm): .1-1.0
PLAGIOCLASE ( 40%)
Size(mm): .1-1.0
APPROX COMP AN55-50,SLIGHT ZONING;
CLINOPYROXENE ( 25%)
OPAQUE MINERALS (% INC%)
Size(mm): LUDES MAGN Morphology: +ILMENITE;
GLASS ( 25%)
Alteration - CARBONATE
Replacing: GLASS,GROUNDMASS
CHLORITE
Replacing: VEIN MINERALS,GLASS,
Replacing: GROUNDMASS
SMECTITE
Replacing: GLASS,GROUNDMASS
Vesicles -
Size(mm): <.1
Percent: TR
Filling: CHLOR,CLAY.MINS
ID UNCERTAIN FROM CHLOR AND CLAY*
Leg : 49 Top/Bottom Interval(mm): 810/ 830 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 452.50 Rock Type: IGNEOUS
Core: 47 Sample Midpoint(m) : 453.32 Sect/Pc #: 1/PCE 3A
ROCK = APHYRIC BASALT;
Texture: SUBOPHITIC, COARSE-GRAINED,APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - OLIVINE ( 20%)
PLAGIOCLASE ( 30%)
CLINOPYROXENE ( 20%)
MAGNETITE ( 3%)
ILMENITE ( 1%)
GLASS ( 27%)
ALTERED*
Alteration - CARBONATE
Replacing: OL,GLASS
SMECTITE
Replacing: OL
CHLORITE
Location: VEINS Replacing: GLASS,OL
Leg : 49 Top/Bottom Interval(mm): 100/ 120 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 452.50 Rock Type: IGNEOUS
Core: 47 Sample Midpoint(m) : 454.11 Sect/Pc #: 2/PCE 1B
ROCK = APHYRIC BASALT;
Texture: SUBOPHITIC, INTERSERTAL,COARSE-GRAINED,APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - OLIVINE ( 10%)
Size(mm): .01-.1
PLAGIOCLASE ( 25%)
Size(mm): .01-.1
CLINOPYROXENE ( 20%)
Size(mm): .01-.1
2 GENERATIONS OF CPX;
ILMENITE ( 1%)
Size(mm): .01-.1
MAGNETITE ( 5%)
Size(mm): .01-.1
GLASS ( 39%)
Alteration -
Location: VEINS Replacing: GROUNDMASS
BROWN MATERIAL*
Leg : 49 Top/Bottom Interval(mm): 860/ 880 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 452.50 Rock Type: IGNEOUS
Core: 47 Sample Midpoint(m) : 454.87 Sect/Pc #: 2/PCE 2
ROCK = APHYRIC BASALT;
Texture: SUBOPHITIC,INTERSERTAL,COARSE-GRAINED,APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - OLIVINE ( 10%)
ALTERED;
PLAGIOCLASE ( 25%)
CLINOPYROXENE ( 20%)
MAGNETITE ( 5%)
ILMENITE ( 1%)
GLASS ( 39%)
ALTERED*
Alteration - CARBONATE
Replacing: OL
CHLORITE
Replacing: OL
Leg : 49 Top/Bottom Interval(mm): 240/ 260 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 452.50 Rock Type: IGNEOUS
Core: 47 Sample Midpoint(m) : 455.75 Sect/Pc #: 3/PCE 2
ROCK = APHYRIC BASALT;
ALTERED;
Texture: SUBOPHITIC,COARSE-GRAINED,APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - OLIVINE ( 14%)
Size(mm): .01-0.1
COMPLETELY ALTERED;
PLAGIOCLASE ( 31%)
Size(mm): .01-0.1
CLINOPYROXENE ( 12%)
Size(mm): .01-0.1
2 GENERATIONS CPX,LATE PHASE FE-TI RICH;
MAGNETITE ( 3%)
ILMENITE ( 1%)
GLASS
Alteration - SMECTITE
Replacing: GROUNDMASS,GLASS
Leg : 49 Top/Bottom Interval(mm): 440/ 450 Describer: DSDP microfilm
Hole: 407 Top of Core Depth(m) : 452.50 Rock Type: IGNEOUS
Core: 47 Sample Midpoint(m) : 457.45 Sect/Pc #: 4/PCE 1E
ROCK = APHYRIC BASALT;
Texture: SUBOPHITIC,INTERSERTAL,TRACHYTOID,APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - OLIVINE ( 7%)
ALTERED;
PLAGIOCLASE ( 25%)
APPROX COMP AN55 (NOT GOOD);
CLINOPYROXENE ( 18%)
MAGNETITE ( 2%)
ILMENITE ( 1%)
GLASS ( 47%)
ALTERED;
Alteration - CARBONATE
Replacing: OL
CHLORITE
Replacing: OL,GLASS
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