Leg : 34 Top/Bottom Interval(mm): 1190/1240 Describer: Donaldson, C.H.
Hole: 321 Top of Core Depth(m) : 115.50 Rock Type: IGNEOUS
Core: 13 Sample Midpoint(m) : 121.22 Sect/Pc #: 4/PCE 4
ROCK = PLAG MICROPHYRIC BASALT
SOURCE IS IR;
Texture: MICROPHYRIC,FINE-GRAINED,INTERGRANULAR,
INTERSERTAL*
Phenocrysts- PLAGIOCLASE
Size(mm): <.5
APPROX COMP AN69.8-67.0*
Groundmass - PLAGIOCLASE
Morphology: FELTED LATHS
CORE TO RIM APPROX COMP AN64.2-56.2;
AUGITE
APPROX COMP CA39.8-34*
VESICLES AND CALCITE-FILLED AMYGDULES UP TO .6MM*
Leg : 34 Top/Bottom Interval(mm): 420/ 450 Describer: Kempe, D.
Hole: 321 Top of Core Depth(m) : 125.00 Rock Type: IGNEOUS
Core: 14 Sample Midpoint(m) : 125.43 Sect/Pc #: 1/PCE 5
ROCK = BASALT
SOURCE IS IR;
Texture: SUBOPHITIC-HYALOOPHITIC,VESICULAR*
Groundmass - OLIVINE ( TR%)
PYROXENE
Morphology: GRANULAR
PLAGIOCLASE
Size(mm): .5 Morphology: EMBAYED LATHS
ORE MINERALS
Morphology: SKELETAL
PROBABLY MAINLY TI-MAGN*
Vesicles -
Size(mm): .7
Leg : 34 Top/Bottom Interval(mm): 990/1020 Describer: Donaldson, C.H.
Hole: 321 Top of Core Depth(m) : 125.00 Rock Type: IGNEOUS
Core: 14 Sample Midpoint(m) : 126.01 Sect/Pc #: 1/PCE 10
ROCK = APHYRIC BASALT
SOURCE IS IR;
Texture: APHYRIC
TEXTURE IDENTICAL TO GROUNDMASS TEX OF 321-13-4-
119-124*
Groundmass - PLAGIOCLASE
CORE TO RIM APPROX COMP AN64.8-45.2;
AUGITE
APPROX COMP CA37.6-32.5*
VESICLES AND AMYGDULES UP TO 1.5MM ACROSS*
Leg : 34 Top/Bottom Interval(mm): 1200/1210 Describer: Scott, R.
Hole: 321 Top of Core Depth(m) : 125.00 Rock Type: IGNEOUS
Core: 14 Sample Midpoint(m) : 126.21 Sect/Pc #: 1/
ROCK = BASALT
SOURCE IS IR;
Texture: VESICULAR*
Groundmass - PYRITE
A SMALL AMOUNT OF DISSEMINATED PRIMARY PYRITE IS
IN THE ROCK*
Alteration - COMBINATION
.1MM WIDE ANASTOMOSING VEIN OF PYRITE AND BLUE-
GREEN TO EMERALD-GREEN SMECTITE;
OTHER ( 17%)
Location: GROUNDMASS
GRAYISH-BROWN ALTERATION PRODUCTS*
Vesicles -
Percent: 2
Filling: CALCITE+SMEC
Leg : 34 Top/Bottom Interval(mm): 90/ 120 Describer: Kempe, D.
Hole: 321 Top of Core Depth(m) : 125.00 Rock Type: IGNEOUS
Core: 14 Sample Midpoint(m) : 126.61 Sect/Pc #: 2/PCE 2
ROCK = BASALT
SOURCE IS IR;
Texture: HYALOOPHITIC,VESICULAR*
Groundmass - OLIVINE ( TR%)
PYROXENE
Morphology: GRANULAR-CLUSTERS
PLAGIOCLASE
Size(mm): <1 Morphology: LATHS
ORE MINERALS
Morphology: SKELETAL
PROBABLY MAINLY TI-MAGN*
Leg : 34 Top/Bottom Interval(mm): 1270/1300 Describer: Donaldson, C.H.
Hole: 321 Top of Core Depth(m) : 125.00 Rock Type: IGNEOUS
Core: 14 Sample Midpoint(m) : 127.79 Sect/Pc #: 2/PCE 12
ROCK = PLAG PHYRIC BASALT
SOURCE IS IR;
Texture: PHYRIC,FINE-GRAINED
SIMILAR TO 321-13-4-119-124*
Phenocrysts- PLAGIOCLASE
APPROX COMP AN70.4*
Groundmass - PLAGIOCLASE
CORE TO RIM APPROX COMP AN68.0-38.1;
AUGITE
APPROX COMP CA35.4-30*
VESICLES AND CALCITE-FILLED VESICLES 1MM ACROSS*
Leg : 34 Top/Bottom Interval(mm): 1350/1380 Describer: Scott, R.
Hole: 321 Top of Core Depth(m) : 125.00 Rock Type: IGNEOUS
Core: 14 Sample Midpoint(m) : 127.87 Sect/Pc #: 2/
ROCK = BASALT
SOURCE IS IR;
Texture: VESICULAR*
Alteration - COMBINATION
.1MM WIDE ANASTOMOSING VEIN OF PYRITE AND GRAY
SMECTITE,A FEW CHALCOPYRITE XTLS ARE SCATTERED
WITHIN THE PYRITE;
OTHER ( 15%)
Location: GROUNDMASS
GRAYISH-BROWN ALTERATION PRODUCTS*
Leg : 34 Top/Bottom Interval(mm): 70/ 100 Describer: Kempe, D.
Hole: 321 Top of Core Depth(m) : 125.00 Rock Type: IGNEOUS
Core: 14 Sample Midpoint(m) : 128.09 Sect/Pc #: 3/PCE 1
ROCK = BASALT
SOURCE IS IR;
Texture: HYALOOPHITIC,VESICULAR*
Groundmass - OLIVINE
POSSIBLE SMEC PSEUDOMORPHS;
PYROXENE
Morphology: GRANULAR
PLAGIOCLASE
Size(mm): <1 Morphology: EMBAYED LATHS
ORE MINERALS
Morphology: SKELETAL
PROBABLY MAINLY TI-MAGN*
Vesicles -
Filling: CALCITE
Leg : 34 Top/Bottom Interval(mm): 930/ 960 Describer: Donaldson, C.H.
Hole: 321 Top of Core Depth(m) : 125.00 Rock Type: IGNEOUS
Core: 14 Sample Midpoint(m) : 128.95 Sect/Pc #: 3/PCE 12
ROCK = PLAG PHYRIC BASALT
SOURCE IS IR;
Texture: PHYRIC,FINE-GRAINED
SIMILAR TO 321-13-4-119-124*
Phenocrysts- PLAGIOCLASE
APPROX COMP AN68.7*
Groundmass - PLAGIOCLASE
CORE TO RIM APPROX COMP AN67.9-46.1;
AUGITE
APPROX COMP 30-32*
VESICLES AND AMYGDULES 1MM ACROSS*
Leg : 34 Top/Bottom Interval(mm): 1010/1100 Describer: Scott, R.
Hole: 321 Top of Core Depth(m) : 125.00 Rock Type: IGNEOUS
Core: 14 Sample Midpoint(m) : 129.06 Sect/Pc #: 3/
ROCK = BASALT
SOURCE IS IR*
Alteration - SMECTITE (E %)
.1MM WIDE ANASTOMOSING VEINS OF GREENISH SMECTITE*
Leg : 34 Top/Bottom Interval(mm): 70/ 100 Describer: Kempe, D.
Hole: 321 Top of Core Depth(m) : 125.00 Rock Type: IGNEOUS
Core: 14 Sample Midpoint(m) : 129.59 Sect/Pc #: 4/PCE 2
ROCK = PLAG PHYRIC BASALT
SOURCE IS IR;
Texture: SUBOPHITIC-COARSE HYALOOPHITIC*
Phenocrysts- PLAGIOCLASE
Size(mm): 1.3 Morphology: EMBAYED LATHS
APPROX COMP AN69-57*
Groundmass - PYROXENE
Morphology: GRANULAR-CLUSTERS
PLAGIOCLASE
APPROX COMP AN61
ORE MINERALS
Morphology: SKELETAL
PROBABLY MAINLY TI-MAGN*
RARE VESICLES*
Leg : 34 Top/Bottom Interval(mm): 610/ 640 Describer: Donaldson, C.H.
Hole: 321 Top of Core Depth(m) : 125.00 Rock Type: IGNEOUS
Core: 14 Sample Midpoint(m) : 130.13 Sect/Pc #: 4/PCE 6
ROCK = APHYRIC BASALT
SOURCE IS IR;
Texture: APHYRIC
SIMILAR TO 321-14-1-99-102*
Groundmass - PLAGIOCLASE
CORE TO RIM APPROX COMP AN65.2-47.8;
AUGITE
APPROX COMP CA37-28*
VESICLES LESS THAN .6MM ACROSS*
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