Leg : 69 Top/Bottom Interval(mm): 300/ 320 Describer: Noack, Y.
Hole: 505A Top of Core Depth(m) : 196.50 Rock Type: IGNEOUS
Core: 1 Sample Midpoint(m) : 196.81 Sect/Pc #: 1/PCE 102
ROCK = PLAG-OL PHYRIC BASALT;
Texture: PHYRIC,OPHITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE ( 1-5%)
Size(mm): .3-1
PLAGIOCLASE
Size(mm): 1-3 Morphology: SKELETAL,DENDRITIC
PLAGIOCLASE
Size(mm): .3-1 Morphology: SKELETAL,DENDRITIC
Groundmass - PLAGIOCLASE ( >40%)
Size(mm): .01-.03 Morphology: SKELETAL,DENDRITIC
PERCENT IS FOR TOTAL PLAG IN SECTION;
CLINOPYROXENE
Morphology: SKELETAL,DENDRITIC
SEGREGATION VESICLES*
Leg : 69 Top/Bottom Interval(mm): 300/ 320 Describer: Pertsev, N.
Hole: 505A Top of Core Depth(m) : 196.50 Rock Type: IGNEOUS
Core: 1 Sample Midpoint(m) : 196.81 Sect/Pc #: 1/PCE 102
ROCK = PLAG-OL MOD PHYRIC BASALT;
Texture: MOD PHYRIC*
Phenocrysts- OLIVINE
Size(mm): 1-3
OLIVINE ( 1-5%)
Size(mm): .3-1
FRESH,PERCENT IS FOR TOTAL OL PHENOS;
PLAGIOCLASE
Size(mm): 1-3
PLAGIOCLASE
Size(mm): .3-1
Groundmass - PLAGIOCLASE (10-20%)
Size(mm): .1-.3
PERCENT IS FOR TOTAL PLAG IN SECTION;
CLINOPYROXENE ( .5-1%)
Size(mm): .1-.3
SPHERULITIC MESOSTASIS ( >40%)
TITANOMAGNETITE ( 1-5%)
XTLS LARGER THAN PYRITE ARE EUHEDRAL OR SUBHEDRAL
AND CONFINED TO THE MESOSTASIS;
CHROME SPINEL ( TR%)
Size(mm): .3-1
LIMITED NUMBER OF XTLS OF CR-SPINEL(VERMICULAR);
PYRITE
SUBMICROSCOPIC,DISSEMINATED IN THE MESOSTASIS,ALSO
SOME LARGER SKELETAL XTLS,CR-SPINEL,PYRITE AND
TITANO-MAGN ARE 1% OF SLIDE*
Alteration - SMECTITE
Location: VESICLES Replacing: GROUNDMASS
BROWN*
Vesicles -
Percent: .5-1
Filling: SMECTITE
Leg : 69 Top/Bottom Interval(mm): 510/ 550 Describer: Noack, Y.
Hole: 505A Top of Core Depth(m) : 203.50 Rock Type: IGNEOUS
Core: 2 Sample Midpoint(m) : 204.03 Sect/Pc #: 1/PCE 109
ROCK = PLAG-OL PHYRIC BASALT;
Texture: PHYRIC,INTERSERTAL,OPHITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): 1-3
OLIVINE ( 1-5%)
Size(mm): .3-1
FRESH PERCENT IS FOR TOTAL OL PHENOS;
PLAGIOCLASE
Size(mm): 1-3
PLAGIOCLASE
Size(mm): .3-1
Groundmass - PLAGIOCLASE
Size(mm): .1-.3
PLAGIOCLASE
Size(mm): .03-.1
PLAGIOCLASE ( >40%)
Size(mm): .01-.03
PERCENT IS FOR TOTAL PLAG IN SECTION,APPROX COMP
AN55-65;
CLINOPYROXENE
Morphology: SKELETAL,DENDRITIC
Alteration - SMECTITE
Location: VESICLES Replacing: OL
A YELLOW ZONE WITH PATCHES OF YELLOW-RED MATERIAL
(SMECTITES+OXIDES?)*
Vesicles -
Filling: SMECTITE
FILLED WITH YELLOW-BROWN SMECTITE*
Leg : 69 Top/Bottom Interval(mm): 510/ 550 Describer: Pertsev, N.
Hole: 505A Top of Core Depth(m) : 203.50 Rock Type: IGNEOUS
Core: 2 Sample Midpoint(m) : 204.03 Sect/Pc #: 1/PCE 109
ROCK = PLAG-OL MOD PHYRIC BASALT
ROCK IS EXTREMELY FRESH,THERE IS A ZONE OF
OXIDATION;
Texture: MOD PHYRIC,MICROLITIC*
Phenocrysts- OLIVINE
Size(mm): 1-3 Morphology: EUHEDRAL
OLIVINE
Size(mm): .3-1 Morphology: EUHEDRAL
FRESH AND ALTERED ONLY ALONG RARE CRACKS;
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL
PLAGIOCLASE
Size(mm): .3-1 Morphology: EUHEDRAL
Groundmass - OLIVINE ( 5-10%)
Size(mm): .03-.1 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL OL IN SECTION,GROUNDMASS OL
IS ALTERED;
PLAGIOCLASE (20-40%)
Size(mm): .1-.3 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL PLAG PHENOS;
CLINOPYROXENE (10-20%)
Size(mm): .03-.1 Morphology: ANHEDRAL
TITANOMAGNETITE ( 1-5%)
PYRITE
PYRITE AND TITANO-MAGN FORMS 2% OF SLIDE IN RATIO
30/70=PYRITE/TITANO-MAGN,CONTACTS SHARP,PYRITE AND
TITANO-MAGN SIMILAR SIZE AND ARE EUHEDRAL/
SUBHEDRAL OR SKELETAL,THERE IS A SIZE RANGE IN ANY
ONE AREA,PYRITE WOULD APPEAR TO BE SECONDARY,
LIMITED AMOUNT OF PYRITE VEINING*
Alteration - SMECTITE
Location: VESICLES Replacing: OL
ALL SMECTITE FILLINGS OR PSEUDOMORPHS HAVE DEEP
YELLOW COLOR,IN THE LAST PART SMECTITE IS LIGHT
YELLOW-GRAY*
Vesicles -
Size(mm): .3-1
Percent: 1-5
Filling: SMECTITE
Shape: ROUND
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