Leg : 58 Top/Bottom Interval(mm): 900/ 920 Describer: Dmitriev, L.
Hole: 442A Top of Core Depth(m) : 285.00 Rock Type: IGNEOUS
Core: 31 Sample Midpoint(m) : 285.91 Sect/Pc #: 1/PCE 1A
ROCK = APHYRIC BASALT;
Texture: INTERGRANULAR-INTERSERTAL, APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - PLAGIOCLASE ( 25.0%)
Size(mm): 0.25-1.5 Morphology: LATHS
APPROX COMP AN73, CARLSBAD TWINS;
CLINOPYROXENE ( 15.0%)
Size(mm): 0.1-0.3 Morphology: ANHEDRAL
AUGITE COMPOSITION;
MAGNETITE ( 1.0%)
Size(mm): 0.01-0.03
ABUNDANCES OBTAINED BY POINT COUNT;
MICROCRYST GROUNDMASS ( 24%)
CRYPTOCRYSTALLINE MATRIX*
Alteration - CLAY MINERALS ( 10%)
Location: INTERGRANULAR Replacing: GROUNDMASS
Vesicles -
Size(mm): 0.1-1.0
Percent: 25.0
Shape: ROUND-
Shape: IRREGULAR
Leg : 58 Top/Bottom Interval(mm): 620/ 640 Describer: Nisterenko, G.
Hole: 442A Top of Core Depth(m) : 290.00 Rock Type: IGNEOUS
Core: 32 Sample Midpoint(m) : 292.13 Sect/Pc #: 2/PCE 2B
ROCK = APHYRIC BASALT;
Texture: INTERGRANULAR-INTERSERTAL,APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - PLAGIOCLASE ( 30%)
Size(mm): 0.6X0.1 Morphology: SUBHEDRAL
APPROX COMP AN54;
CLINOPYROXENE ( 7%)
Size(mm): 0.4X0.2 Morphology: ANHEDRAL
AUGITE COMP;
GLASS ( 30%)
INTERSTITIAL*
Alteration - CARBONATE ( 3%)
Location: VESICLES
Vesicles -
Size(mm): 0.1-2.0
Percent: 30
Filling: CARBONATES
Shape: ROUND,
Shape: IRREGULAR
Leg : 58 Top/Bottom Interval(mm): 1260/1280 Describer: Nisterenko, G.
Hole: 442A Top of Core Depth(m) : 290.00 Rock Type: IGNEOUS
Core: 32 Sample Midpoint(m) : 292.77 Sect/Pc #: 2/PCE 5A
ROCK = APHYRIC BASALT;
Texture: VARIOLITIC-INTERSERTAL,APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - PLAGIOCLASE ( 10%)
Size(mm): 0.1-2 Morphology: EUHEDRAL,SKELETAL
LIGHT ZONATION,APPROX COMP AN62;
COMBINATION ( 50%)
INCLUDES GLASS+PYX+PLAG+MAGN,MICROLITE (HALF
CRYSTALLINE)*
Vesicles -
Size(mm): 0.05-1.5
Percent: 40
Shape: ROUND,
Shape: IRREGULAR
UNFILLED*
Leg : 58 Top/Bottom Interval(mm): 90/ 0 Describer: Marsh, N.
Hole: 442A Top of Core Depth(m) : 294.50 Rock Type: IGNEOUS
Core: 33 Sample Midpoint(m) : 294.59 Sect/Pc #: 1/PCE 1
ROCK = APHYRIC BASALT;
Texture: APHYRIC,INTERSERTAL;
Where sampled: FLOW INTERIOR*
Groundmass - PLAGIOCLASE ( 25%)
Size(mm): 0.5-1 Morphology: LATHS
APPROX COMP AN59;
CLINOPYROXENE ( 20%)
Size(mm): 0.05-0.2 Morphology: ANHEDRAL
MAGNETITE ( 3%)
MICROCRYST GROUNDMASS ( 25%)
CRYPTOCRYSTALLINE MATRIX*
Alteration - CARBONATE ( 1%)
Location: VESICLE
Location: FILLING
CLAY MINERALS ( 1%)
Location: VESICLE
Location: FILLING
Vesicles -
Size(mm): 0.1-1
Percent: 25
Filling: CARB,CLAY.MIN
Leg : 58 Top/Bottom Interval(mm): 1010/1030 Describer: Marsh, N.
Hole: 442A Top of Core Depth(m) : 294.50 Rock Type: IGNEOUS
Core: 33 Sample Midpoint(m) : 297.02 Sect/Pc #: 2/PCE 4D
ROCK = APHYRIC BASALT;
Texture: INTERSERTAL, APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - PLAGIOCLASE ( 35%)
Size(mm): 0.1-3 Morphology: LATHS
COMP AN60;
CLINOPYROXENE ( 25%)
Size(mm): 0.1-0.5 Morphology: ANHEDRAL
MAGNETITE ( 4%)
Size(mm): 0.05-0.1 Morphology: GRANULAR
MICROCRYST GROUNDMASS ( 20%)
CRYPTOCRYSTALLINE MATRIX*
Alteration - CLAY MINERALS ( 1%)
Location: VESICLES
LINING VESICLES*
Vesicles -
Size(mm): 0.3-1
Percent: 15
Filling: CLAY.MIN
Leg : 58 Top/Bottom Interval(mm): 790/ 810 Describer: Marsh, N.
Hole: 442A Top of Core Depth(m) : 294.50 Rock Type: IGNEOUS
Core: 33 Sample Midpoint(m) : 298.30 Sect/Pc #: 3/PCE 9A
ROCK = APHYRIC BASALT;
Texture: INTERSERTAL,APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - PLAGIOCLASE ( 30%)
Size(mm): 0.1-1 Morphology: LATHS
APPROX COMP AN59;
CLINOPYROXENE ( 20%)
Size(mm): 0.1-0.5 Morphology: ANHEDRAL
MAGNETITE ( 3%)
Size(mm): <0.02 Morphology: GRANULAR
MICROCRYST GROUNDMASS ( 20%)
CRYPTOCRYSTALLINE MATRIX*
Alteration - CARBONATE ( 1%)
Location: VESICLES
FILLING VESICLES;
CLAY MINERALS ( 1%)
Location: VESICLES
LINING VESICLES*
Vesicles -
Size(mm): 0.05-1
Percent: 25
Filling: CARBS,CLAY.MINS
Leg : 58 Top/Bottom Interval(mm): 520/ 540 Describer: Marsh, N.
Hole: 442A Top of Core Depth(m) : 294.50 Rock Type: IGNEOUS
Core: 33 Sample Midpoint(m) : 299.53 Sect/Pc #: 4/PCE 2B
ROCK = APHYRIC BASALT;
Texture: INTERSERTAL,APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - PLAGIOCLASE ( 30%)
Size(mm): 0.2-1 Morphology: LATHS
APPROX COMP AN69;
CLINOPYROXENE ( 20%)
Size(mm): 0.1-1 Morphology: ANHEDRAL
MAGNETITE ( 2%)
Size(mm): 0.02-0.1 Morphology: GRANULAR
MICROCRYST GROUNDMASS ( 25%)
CRYPTOCRYSTALLINE MATRIX*
Alteration - CARBONATE ( 2%)
Location: VESICLES
FILLING VESICLES;
CLAY MINERALS ( 2%)
Location: VESICLES
LINING VESICLES*
Vesicles -
Size(mm): 0.1-1
Percent: 19
Shape: ANHEDRAL
Leg : 58 Top/Bottom Interval(mm): 1080/1100 Describer: Marsh, N.
Hole: 442A Top of Core Depth(m) : 294.50 Rock Type: IGNEOUS
Core: 33 Sample Midpoint(m) : 300.09 Sect/Pc #: 4/PCE 7
ROCK = APHYRIC BASALT;
Texture: INTERSERTAL,APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - PLAGIOCLASE ( 25%)
Size(mm): 0.3-1 Morphology: LATHS
APPROX COMP AN60,SOME IN SPHERULITIC GROUPS;
CLINOPYROXENE ( 15%)
Size(mm): 0.01-1 Morphology: ANHEDRAL
OFTEN FINE GRAINED,NOT ACICULAR;
MAGNETITE ( 2%)
Size(mm): 0.01-0.2 Morphology: GRANULES
MICROCRYST GROUNDMASS ( 8%)
CRYPTOCRYSTALLINE MATRIX*
Vesicles -
Size(mm): 0.05-2
Percent: 50
Leg : 58 Top/Bottom Interval(mm): 510/ 530 Describer: Marsh, N.
Hole: 442A Top of Core Depth(m) : 304.00 Rock Type: IGNEOUS
Core: 34 Sample Midpoint(m) : 304.52 Sect/Pc #: 1/PCE 9
ROCK = APHYRIC BASALT;
Texture: VARIOLITIC,APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - PLAGIOCLASE ( 5%)
Size(mm): 0.05-1 Morphology: ACICULAR
APPROX COMP AN56,ACICULAR;
MICROCRYST GROUNDMASS ( 55%)
CRYPTOCRYSTALLINE MATRIX*
Vesicles -
Size(mm): 0.02-3
Percent: 40
Leg : 58 Top/Bottom Interval(mm): 1260/ 0 Describer: Marsh, N.
Hole: 442A Top of Core Depth(m) : 304.00 Rock Type: IGNEOUS
Core: 34 Sample Midpoint(m) : 305.26 Sect/Pc #: 1/PCE 12
ROCK = APHYRIC BASALT;
Texture: INTERSERTAL,APHYRIC;
Where sampled: FLOW INTERIOR*
Groundmass - PLAGIOCLASE ( 21%)
Size(mm): 0.05-1.5 Morphology: LATHS
APPROX COMP AN67;
CLINOPYROXENE ( 21%)
Size(mm): 0.05-0.5 Morphology: ANHEDRAL
MAGNETITE ( 2%)
Size(mm): 0.01-0.1 Morphology: GRANULAR
MICROCRYST GROUNDMASS ( 21%)
CRYPTOCRYSTALLINE MATRIX*
Alteration - CARBONATES ( 1%)
Location: VESICLES
FILLING VESICLES;
CLAY MINERALS ( 4%)
Location: VESICLES
LINING VESICLES*
Vesicles -
Size(mm): 0.1-2
Percent: 30
Filling: CARBS,CLAY.MINS
|
