Leg : 34 Top/Bottom Interval(mm): 520/ 550 Describer: Bass, M.
Hole: 319 Top of Core Depth(m) : 111.50 Rock Type: IGNEOUS
Core: 13 Sample Midpoint(m) : 112.04 Sect/Pc #: 1/PCE 1
ROCK = PLAG-OL MICROPHYRIC BASALT;
Texture: SPHERULITIC TO FINELY VARIOLITIC,MICROPHYRIC;
Phenocrysts- PLAGIOCLASE
PLAG > OL;
OLIVINE
Morphology: EUHEDRAL TO SKELETAL
FRESH IN PLACES IN SECTION, BUT COMMONLY REPLACED
BY GOLDEN YELLOW SMEC AND MINOR FE.OX*
Alteration - SMECTITE
Replacing: OL
FERROUS OXIDE
Replacing: OL
Leg : 34 Top/Bottom Interval(mm): 770/ 800 Describer: Bunch, T.
Hole: 319 Top of Core Depth(m) : 111.50 Rock Type: IGNEOUS
Core: 13 Sample Midpoint(m) : 112.29 Sect/Pc #: 1/PCE 4
ROCK = OL-PLAG SPARSELY PHYRIC BASALT
SOURCE IS IR;
Texture: VARIOLITIC-INTERGRANULAR,VERY FINE-GRAINED,
SPARSELY PHYRIC*
Groundmass - OLIVINE
VERY RARE,SMALL,TOTALLY ALTERED(PALAGONITE?);
PYROXENE
Morphology: PLUMOSE+GRANULAR
PLAGIOCLASE
Size(mm): <1 Morphology: LATHS
OPAQUE MINERALS
Morphology: SKELETAL
PROBABLY MAINLY TI-MAGN*
Leg : 34 Top/Bottom Interval(mm): 840/ 850 Describer: Bass, M.
Hole: 319 Top of Core Depth(m) : 111.50 Rock Type: IGNEOUS
Core: 13 Sample Midpoint(m) : 112.35 Sect/Pc #: 1/PCE 5
ROCK = APHYRIC BASALT;
Texture: INTERGRANULAR, SOME VARIOLES, SHEAF
MINOR CLOTS OF COARSER PLAG AND PYX BUT NOT
NOTABLY PORPHYRITIC;
Groundmass - OLIVINE
LARGELY ALTERED TO YELLOW SMEC, BUT SOME FRESH
REMNANTS AND DISTINCTLY RECOGNIZABLE LARGE
LARGE PSEUDOMORPHS;
PLAGIOCLASE
PYROXENE
Alteration - SMECTITE
Replacing: GROUNDMASS,OL
Vesicles -
Filling: SMEC
SMEC FILLS VUGS OR VESICLES*
Leg : 34 Top/Bottom Interval(mm): 970/ 0 Describer: Bass, M.
Hole: 319 Top of Core Depth(m) : 111.50 Rock Type: IGNEOUS
Core: 13 Sample Midpoint(m) : 112.47 Sect/Pc #: 1/PCE 7
ROCK = BASALT;
Texture: ALMOST APHYRIC,COARSER THAN PCE 5,IN PART
FINE-GRAINED TO VERY FINE-GRAINED
ABUNDANT VARIOLES, COMMONLY ELONGATED IN
BUNCHES SEPARATED BY COARSER PLAG AND GRANULAR
PYX;
Groundmass - PLAGIOCLASE
PYROXENE
Morphology: GRANULAR
OLIVINE
COMMONLY FRESH OR ALTERED ON EDGES ONLY,
INTERLOCKED WITH PLAG IN SOME CASES,
DISTINCTLY + 2V (APPROX 85 DEGREES), FO > 85*
Alteration - SMECTITE
Location: GROUNDMASS,
Location: VUGS
YELLOW, LINES VUGS*
Vesicles -
Filling: FE.OX,SMEC
EMPTY TO LINED BY RED FE.OX*
Leg : 34 Top/Bottom Interval(mm): 1030/1070 Describer: Bass, M.
Hole: 319 Top of Core Depth(m) : 111.50 Rock Type: IGNEOUS
Core: 13 Sample Midpoint(m) : 112.55 Sect/Pc #: 1/PCE 8
ROCK = BASALT;
Texture: VARIOLITIC*
Groundmass - OLIVINE
MINOR,HARD TO SEE,EXCEPT WHERE ALTERED,AND
ORIGINAL CRACKS ARE IRON STAINED,SO THAT THE
MORPHOLOGY STANDS OUT,ALTERED ALONG WITH BROWN
ALTERED PART AND GROUNDMASS TO GOLDEN YELLOW
SMECTITE,TRACE OF CALCITE IN ALTERED OLIVINE,OL
DEFINITELY OCCURS IN GROUNDMASS,LITTLE,IF ANY,
FRESH OL LEFT(MAY HAVE BEEN PLUCKED IN GRINDING
SECTION-THERE ARE NUMEROUS HOLES)NO EVIDENCE FOR
DISTINCT MICROPHENOS,NOR FOR OL ACCUMULATION*
Vesicles -
Filling: SMECTITE
VUGS*
Leg : 34 Top/Bottom Interval(mm): 1100/1130 Describer: Bass, M.
Hole: 319 Top of Core Depth(m) : 111.50 Rock Type: IGNEOUS
Core: 13 Sample Midpoint(m) : 112.62 Sect/Pc #: 1/
ROCK = BASALT;
Texture: VARIOLITIC*
Groundmass - OLIVINE
WHOLLY ALTERED TO SMECTITE AND RARE CALCITE,
GROUNDMASS IS SIMILARLY ALTERED,BUT ALTERATION WAS
EVIDENTLY NON-OXIDIZING SO THE SMECTITE IS DULL
LIGHT BROWN,NOT GOLDEN YELLOW OR PIGMENTED BY FE-
OXIDE,OL DEFINITELY OCCURS IN THE GROUNDMASS,NO
EVIDENCE FOR DISTINCT MICROPHENOS,NOR FOR OL
ACCUMULATION;
OPAQUE MINERALS
RARELY OPAQUE GRAINS ARE STAINED ORANGE BROWN,OR
THE ALTERED MESOSTASIS VERY LIGHTLY SO*
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