Leg : 69 Top/Bottom Interval(mm): 290/ 330 Describer: Noack, Y.
Hole: 505B Top of Core Depth(m) : 141.00 Rock Type: IGNEOUS
Core: 2 Sample Midpoint(m) : 141.31 Sect/Pc #: 1/PCE 114
ROCK = PLAG MOD PHYRIC BASALT;
Texture: MOD PHYRIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE
Size(mm): 1-3 Morphology: SKELETAL,DENDRITIC
PLAGIOCLASE
Size(mm): .3-1 Morphology: SKELETAL,DENDRITIC
Groundmass - OLIVINE ( .5-1%)
Size(mm): .1-.3 Morphology: EUHEDRAL
RARE AND FRESH;
PLAGIOCLASE
Size(mm): .1-.3 Morphology: SKELETAL,DENDRITIC
PLAGIOCLASE
Size(mm): .03-.1 Morphology: SKELETAL,DENDRITIC
PLAGIOCLASE (20-40%)
Size(mm): .01-.03 Morphology: SKELETAL,DENDRITIC
PERCENT IS FOR TOTAL PLAG IN SECTION,APPROX COMP
AN50-70,MANY TABULAR AND SKELETAL PLAG XTLS;
MESOSTASIS
MICROLITIC MESOSTASIS WITH PLAG-CPX;
CHROME SPINEL ( TR%)
Morphology: EUHEDRAL,VERMICULAR,SKELETAL
THREE PIECES;
PYRITE
Morphology: EUHEDRAL,SKELETAL
SMALL EUHEDRAL OR SKELETAL XTLS IN MESOSTASIS,SOME
ASSOCIATED WITH CLAY-FILLED VESICLES;
TITANOMAGNETITE
Morphology: EUHEDRAL,SUBHEDRAL,SKELETAL
IN MESOSTASIS,MAINLY IN GLASS AREAS,PYRITE-TITANO-
MAGN CONTACT IS SHARP,CR-SPINEL + PYRITE AND TITANO
MAGN = 1%*
Alteration - SMECTITE
Location: VESICLES Replacing: GLASS
YELLOW OXIDATION ZONE,YELLOW RED SMECTITES IN
VESICLES AND CRACKS AND REPLACING GLASS IN THE
MESOSTASIS;
CALCITE
Location: CRACKS
Vesicles -
Size(mm): .03-.1
Filling: SMECTITE
Shape: ROUND
Size(mm): .01-.03
Percent: 1-5
Filling: SMECTITE
Shape: ROUND
PERCENT IS FOR TOTAL VESICLES,YELLOW-BROWN
VESICLES AND PATCHES IN THE MESOSTASIS*
Leg : 69 Top/Bottom Interval(mm): 1080/1110 Describer: Noack, Y.
Hole: 505B Top of Core Depth(m) : 141.00 Rock Type: IGNEOUS
Core: 2 Sample Midpoint(m) : 142.10 Sect/Pc #: 1/PCE 124
ROCK = PLAG-OL MOD PHYRIC BASALT;
Texture: MOD PHYRIC,SPHERULITIC;
Where sampled: PILLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): .3-1 Morphology: EUHEDRAL
PLAGIOCLASE
Size(mm): 1-3 Morphology: SKELETAL,DENDRITIC
PLAGIOCLASE
Size(mm): .3-1 Morphology: SKELETAL,DENDRITIC
Groundmass - OLIVINE ( .5-1%)
Size(mm): .1-.3 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL OL IN SECTION,FRESH WITH
ALTERATION ALONG CRACKS;
PLAGIOCLASE (20-40%)
Size(mm): .1-.3 Morphology: SKELETAL,DENDRITIC
PERCENT IS FOR TOTAL PLAG IN SECTION,APPROX COMP
AN45-65,SKELETAL AND DENDRITIC PLAG MICROLITES;
SPHERULITIC MESOSTASIS ( >40%)
CHROME SPINEL ( TR%)
Morphology: EUHEDRAL,VERMICULAR,SKELETAL
VERMICULAR AND SKELETAL TEXTURE;
PYRITE
Morphology: SKELETAL
AS LARGE SKELETAL XTLS ASSOCIATED WITH CLAYS IN
VESICLES OR AS DISSEMINATED VERY SMALL SUBHEDRAL
EUHEDRAL XTLS IN THE MESOSTASIS(SECONDARY?);
TITANOMAGNETITE
CONFINED TO MESOSTASIS AS SUBMICROSCOPIC EUHEDRAL
AND SUBHEDRAL XTLS WITH SOME SKELETAL FORMS,
CR-SPINEL + PYRITE AND TITANO-MAGN=1% OF SLIDE,
PYRITE/TITANO-MAGN=1/9*
Alteration - SMECTITE
Location: VESICLES
YELLOW OXIDATION ZONE-IDENTICAL TO 2-1-29-33*
Vesicles -
Size(mm): .3-1
Filling: SMECTITE
Size(mm): .1-.3
Percent: 1-5
Location: S
Filling: MECTITE
PERCENT IS FOR TOTAL VESICLES,YELLOW-BROWN
SMECTITE FILLING*
Leg : 69 Top/Bottom Interval(mm): 980/1010 Describer: Noack, Y.
Hole: 505B Top of Core Depth(m) : 141.00 Rock Type: IGNEOUS
Core: 2 Sample Midpoint(m) : 143.50 Sect/Pc #: 2/PCE 142
ROCK = PLAG-OL MOD PHYRIC BASALT;
Texture: MOD PHYRIC,OPHITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): 1-3
OLIVINE ( 1-5%)
Size(mm): .3-1
PERCENT IS FOR TOTAL OL PHENOS,MORE ALTERED THAN
IN 2-1-108-111;
PLAGIOCLASE
Size(mm): .3-1
Groundmass - PLAGIOCLASE
Size(mm): .1-.3
PLAGIOCLASE (20-40%)
Size(mm): .03-.1
PERCENT IS FOR TOTAL PLAG IN SECTION,APPROX COMP
AN55-65;
CHROME SPINEL ( TR%)
AS LARGE HOMOGENOUS AND SKELETAL GRAINS,EUHEDRAL,
ONE EXAMPLE OF THE FE-MINERAL SIMILAR TO CR-SPINEL
IN A VESICLE;
TITANOMAGNETITE
DISSEMINATED BUT CONFINED TO THE GROUNDMASS,LARGE
GRAINS SKELETAL,SMALLER EUHEDRAL AND SUBHEDRAL;
PYRITE
AS SUBHEDRAL PATCHES IN MESOSTASIS(SECONDARY),
CR-SPINEL + PYRITE+TITANO-MAGN <2% OF SLIDE-MOSTLY
TITANO-MAGN*
Alteration - SMECTITE
Location: VESICLES Replacing: OL
YELLOW-RED(YELLOW-GREEN IN CROSSED POLARS)IN
OXIDIZED ZONE*
Vesicles -
Size(mm): .3-1
Filling: SMECTITE
Size(mm): .1-.3
Percent: 1-5
Filling: SMECTITE
PERCENT IS FOR TOTAL VESICLES,YELLOW-BROWN
VESICLES IN FRESH ZONES*
Leg : 69 Top/Bottom Interval(mm): 400/ 420 Describer: Noack, Y.
Hole: 505B Top of Core Depth(m) : 141.00 Rock Type: IGNEOUS
Core: 2 Sample Midpoint(m) : 144.41 Sect/Pc #: 3/PCE 152
ROCK = PLAG-OL MOD PHYRIC BASALT
FRESH PILLOW INTERIOR;
Texture: MOD PHYRIC,DENDRITIC;
Where sampled: PILLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): 1-3
OLIVINE ( 1-5%)
Size(mm): .3-1
PERCENT IS FOR TOTAL OL PHENOS,FRESH OL RELICS;
PLAGIOCLASE
Size(mm): 1-3 Morphology: SKELETAL,DENDRITIC
PLAGIOCLASE
Size(mm): .3-1 Morphology: SKELETAL,DENDRITIC
Groundmass - PLAGIOCLASE
Size(mm): .1-.3 Morphology: SKELETAL,DENDRITIC
PLAGIOCLASE (20-40%)
Size(mm): .03-.1 Morphology: SKELETAL,DENDRITIC
PERCENT IS FOR TOTAL PLAG IN SECTION,APPROX COMP
AN50-60;
SPHERULITIC MESOSTASIS ( >40%)
CHROME SPINEL ( TR%)
Morphology: EUHEDRAL
SOME VERMICULAR AND SKELETAL TEXTURE,GRAINS IN
VESICLE WALLS SHOW BIREFRINGENCE SO NOT CR-SPINEL
(FE-MINERAL?);
PYRITE
SECONDARY,AS A SERIES OF BROAD BANDS/VEINS SEEN AS
DISCONTINUOUS STRINGERS OR AGGREGATES OF PYRITE,
SOME CAN BE EUHEDRAL;
TITANOMAGNETITE
Morphology: EUHEDRAL,SUBHEDRAL
SUBMICROSCOPIC AND DISSEMINATED IN THE MESOSTASIS,
CR-SPINEL + PYRITE AND TITANO-MAGN <1%(PYRITE=.01%)
Alteration - CALCITE
Replacing: OL
SMECTITE
Location: VESICLES Replacing: OL
YELLOW OXIDIZED ZONE WITH YELLOW-RED SMECTITES*
Vesicles -
Size(mm): .3-1
Filling: SMECTITE
Size(mm): .1-.3
Percent: 1-5
Filling: SMECTITE
PERCENT IS FOR TOTAL VESICLES*
Leg : 69 Top/Bottom Interval(mm): 1030/1060 Describer: Noack, Y.
Hole: 505B Top of Core Depth(m) : 141.00 Rock Type: IGNEOUS
Core: 2 Sample Midpoint(m) : 145.05 Sect/Pc #: 3/PCE 161
ROCK = PLAG-OL-CR.SPINEL MOD PHYRIC BASALT
VERY FRESH PILLOW INTERIOR;
Texture: MOD PHYRIC,SPHERULITIC,DENDRITIC;
Where sampled: PILLOW INTERIOR*
Phenocrysts- OLIVINE ( .5-1%)
Size(mm): .3-1
PLAGIOCLASE
Size(mm): .3-1 Morphology: SKELETAL,DENDRITIC
CHROME SPINEL ( TR%)
Size(mm): 1-3 Morphology: EUHEDRAL
5 OR 6 GRAINS,AS EUHEDRAL XTLS FOUND ONLY IN THE
MESOSTASIS,CAN BE VERMICULAR AND SKELETAL OR
HOMOGENOUS THROUGHOUT IN REFLECTED LIGHT*
Groundmass - PLAGIOCLASE (10-20%)
Size(mm): .1-.3 Morphology: SKELETAL,DENDRITIC
PERCENT IS FOR TOTAL PLAG IN SECTION;
SPHERULITIC MESOSTASIS ( >40%)
PYRITE
TITANOMAGNETITE
PYRITE AND TITANO-MAGN(1:9)CONFINED TO MESOSTASIS,
GENERALLY SUBMICROSCOPIC ALTHOUGH PYRITE XTLS CAN
BE LARGER,EUHEDRAL AND SUBHEDRAL,FEW SKELETAL
XTLS CR-SPINEL + PYR AND TITANO-MAGN=.5% OF SLIDE*
Vesicles -
Percent: TR
Leg : 69 Top/Bottom Interval(mm): 50/ 80 Describer: Noack, Y.
Hole: 505B Top of Core Depth(m) : 150.50 Rock Type: IGNEOUS
Core: 3 Sample Midpoint(m) : 150.57 Sect/Pc #: 1/PCE 163
ROCK = PLAG-OL MOD PHYRIC BASALT
FRESH PILLOW INTERIOR;
Texture: MOD PHYRIC,SPHERULITIC,DENDRITIC;
Where sampled: PILLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): .3-1 Morphology: EUHEDRAL
PLAGIOCLASE
Size(mm): .3-1 Morphology: SKELETAL,DENDRITIC
Groundmass - OLIVINE ( 1-5%)
Size(mm): .1-.3 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL OL IN SECTION;
PLAGIOCLASE
Size(mm): .1-.3 Morphology: SKELETAL,DENDRITIC
PLAGIOCLASE (20-40%)
Size(mm): .03-.1 Morphology: SKELETAL,DENDRITIC
PERCENT IS FOR TOTAL PLAG IN SECTION,APPROX COMP
AN55-65;
SPHERULITIC MESOSTASIS ( >40%)
CHROME SPINEL ( TR%)
4-5 PIECES,AS EUHEDRAL XTLS IN MESOSTASIS OR
WITHIN OL,XTLS CAN HAVE VERMICULAR AND SKELETAL
TEXTURES OR BE HOMOGENOUS THROUGHOUT;
TITANOMAGNETITE
TITANO-MAGN IS SUBMICROSCOPIC AS SUBHEDRAL AND
EUHEDRAL XTLS,IN SPHERULITIC ZONES SHOWING NO
ALTERATION TO CLAYS,SKELETAL XTLS PRESENT AND ARE
LARGER THAN ELSEWHERE,CR-SPINEL AND TITANO-MAGN =
.5% OF SLIDE;
PYRITE
EUHEDRAL IN MESOSTASIS(POSSIBLY PRIMARY?) AS A
TRACE*
Vesicles -
Percent: TR
Leg : 69 Top/Bottom Interval(mm): 760/ 790 Describer: Noack, Y.
Hole: 505B Top of Core Depth(m) : 150.50 Rock Type: IGNEOUS
Core: 3 Sample Midpoint(m) : 151.28 Sect/Pc #: 1/PCE 171
ROCK = PLAG-OL MOD PHYRIC BASALT
FRESH PILLOW INTERIOR;
Texture: MOD PHYRIC,SPHERULITIC,DENDRITIC;
Where sampled: PILLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): 1-3 Morphology: EUHEDRAL
PLAGIOCLASE
Size(mm): 1-3 Morphology: SKELETAL,DENDRITIC,EUHEDRAL
PLAGIOCLASE
Size(mm): .3-1 Morphology: SKELETAL,DENDRITIC,EUHEDRAL
Groundmass - OLIVINE ( 1-5%)
Size(mm): .1-.3 Morphology: EUHEDRAL
FRESH,PERCENT IS FOR TOTAL OL IN SECTION;
PLAGIOCLASE
Size(mm): .1-.3 Morphology: SKELETAL,DENDRITIC,EUHEDRAL
PLAGIOCLASE
Size(mm): .03-.1 Morphology: SKELETAL,DENDRITIC,EUHEDRAL
PLAGIOCLASE (20-40%)
Size(mm): .01-.03 Morphology: SKELETAL,DENDRITIC,EUHEDRAL
PERCENT IS FOR TOTAL PLAG IN SECTION,APPROX COMP
AN50-75,AN82 BY CARLSBAD-ALBITE,AN75 BY
MICROLITES;
SPHERULITIC MESOSTASIS ( >40%)
CHROMIUM SPINEL ( .5-1%)
CR-SPINEL AND A SIMILAR BIREFRINGENT MINERAL AS
EUHEDRAL GRAINS CONFINED TO PERIPHERY OF VESICLES,
CR-SPINEL ALONE OCCURS IN OL AND MESOSTASIS,
SKELETAL AND VERMICULAR TEXTURE COMMON;
PYRITE ( TR%)
IN "VEINS" IN PLAG(SECONDARY?);
TITANOMAGNETITE ( .5%)
Morphology: EUHEDRAL
SUBMICROSCOPIC*
YELLOW OXIDIZED ZONE*
Vesicles -
Size(mm): 1-3
Size(mm): .3-1
Size(mm): .1-.3
Percent: 1-5
PERCENT IS FOR TOTAL VESICLES,SEGREGATION
VESICLES*
Leg : 69 Top/Bottom Interval(mm): 990/1010 Describer: Noack, Y.
Hole: 505B Top of Core Depth(m) : 150.50 Rock Type: IGNEOUS
Core: 3 Sample Midpoint(m) : 153.00 Sect/Pc #: 2/PCE 788
ROCK = PLAG-OL MOD PHYRIC BASALT;
Texture: MOD PHYRIC,DENDRITIC,OPHITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): .3-1
PLAGIOCLASE
Size(mm): .3-1
Groundmass - OLIVINE ( .5-1%)
Size(mm): .1-.3
PERCENT IS FOR TOTAL OL IN SECTION,ALTERED BY
SMECTITE ALONG CRACKS;
PLAGIOCLASE
Size(mm): .1-.3
PLAGIOCLASE (20-40%)
Size(mm): .03-.1
PERCENT IS FOR TOTAL PLAG IN SECTION,APPROX COMP
AN58-72;
CHROMIUM SPINEL ( TR%)
AS EUHEDRAL OR SUBHEDRAL XTLS IN THE GROUNDMASS OR
WITHIN PLAG XTLS,CAN BE VERMICULAR AND SKELETAL OR
NOT;
PYRITE
AS ELONGATE AGGREGATES IN SOME SMECTITE AREAS
(SECONDARY?)AND AS EUHEDRAL XTLS ON THE
CIRCUMFERENCE OF SOME VESICLES,REMAINDER AS
DISSEMINATED EUHEDRAL XTLS IN MESOSTASIS;
TITANOMAGNETITE
VERY SMALL EUHEDRAL,SUBHEDRAL AND SKELETAL XTLS IN
MESOSTASIS,CR-SPINEL,PYRITE AND TITANO-MAGN = 1%,
PYRITE/TITANO-MAGN=1/4*
Alteration - CALCITE
Location: VESICLES,
Location: CRACKS
SMECTITE
Location: VESICLES, Replacing: OL
Location: CRACKS
Vesicles -
Size(mm): .3-1
Filling: SMEC,CALCITE
Size(mm): .1-.3
Filling: SMEC,CALCITE
Size(mm): .03-.1
Filling: SMEC,CALCITE
SEGREGATION VESICLES,FRESH ZONE:VESICLES WITH
YELLOW-BROWN SMECTITE,OXIDIZED ZONE:VESICLES WITH
YELLOW-RED SMECTITE*
Leg : 69 Top/Bottom Interval(mm): 1350/1370 Describer: Noack, Y.
Hole: 505B Top of Core Depth(m) : 150.50 Rock Type: IGNEOUS
Core: 3 Sample Midpoint(m) : 153.36 Sect/Pc #: 2/PCE 191
ROCK = PLAG-OL MOD PHYRIC BASALT
VERY BEAUTIFUL FRESH PILLOW MARGIN;
Texture: MOD PHYRIC,VARIOLITIC,SPHERULITIC;
Where sampled: PILLOW RIM*
Phenocrysts- OLIVINE
Size(mm): .3-1
PLAGIOCLASE
Size(mm): 1-3
PLAGIOCLASE
Size(mm): .3-1
Groundmass - OLIVINE
Size(mm): .1-.3
PLAGIOCLASE
Size(mm): .1-.3
PLAGIOCLASE
Size(mm): .03-.1
GLASSY INCLUSIONS IN PLAG;
CHROME SPINEL ( TR%)
EUHEDRAL,NON-VERMICULAR,NON-SKELETAL GRAINS IN
PLAG,EUHEDRAL GRAINS SIMILAR TO CR-SPINEL BUT SHOW
SOME BIREFRINGENCE ARE PRESENT AROUND VESICLES;
PYRITE
TRACES OF PYRITE EVENLY DISTRIBUTED(PRIMARY AND
SECONDARY?);
TITANOMAGNETITE
UNIFORM SUBMICROSCOPIC EUHEDRAL AND SUBHEDRAL
GRAINS ONLY IN BETWEEN INDIVIDUAL SPHERULITES,CR-
SPINEL + UNKNOWN AND TITANO-MAGN=.5% OF SLIDE*
Alteration - SMECTITE
Location: VESICLES
LIGHT GREEN;
CALCITE
Location: VESICLES
Vesicles -
Size(mm): .3-1
Filling: SMEC,CALCITE
Size(mm): .1-.3
Filling: SMEC,CALCITE
Size(mm): .03-.1
Filling: SMEC,CALCITE
SEGREGATION VESICLES*
Leg : 69 Top/Bottom Interval(mm): 140/ 170 Describer: Noack, Y.
Hole: 505B Top of Core Depth(m) : 164.00 Rock Type: IGNEOUS
Core: 5 Sample Midpoint(m) : 164.16 Sect/Pc #: 1/PCE 194
ROCK = PLAG-OL MOD PHYRIC BASALT
FRESH PILLOW INTERIOR;
Texture: MOD PHYRIC,DENDRITIC;
Where sampled: PILLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): .3-1 Morphology: EUHEDRAL
PLAGIOCLASE
Size(mm): 1-3 Morphology: SKELETAL,DENDRITIC
PLAGIOCLASE
Size(mm): .3-1 Morphology: SKELETAL,DENDRITIC
Groundmass - OLIVINE ( 1-5%)
Size(mm): .1-.3 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL OL IN SECTION;
PLAGIOCLASE (20-40%)
Size(mm): .1-.3 Morphology: SKELETAL,DENDRITIC
PERCENT IS FOR TOTAL PLAG IN SECTION,APPROX COMP
AN60-85;
CHROME SPINEL ( TR%)
AS EUHEDRAL XTLS,LARGER FORMS SHOW VERMICULAR AND
SKELETAL TEXTURES,FOUND WITHIN PLAG AND IN THE
MESOSTASIS;
PYRITE ( TR%)
AS CORRODED EUHEDRAL XTLS IN SMECTITE OR AS DRAWN-
OUT AGGREGATES OR "VEINS" NEAR VESICLES(SECONDARY)
SMALL EUHEDRAL XTLS IN MESOSTASIS MAY BE PRIMARY;
TITANOMAGNETITE
Morphology: EUHEDRAL,SKELETAL
IN TWO SIZE RANGES,BOTH IN MESOSTASIS,
EUHEDRAL OR SKELETAL XTLS,TITANO-MAGN AND
CR-SPINEL = 1%*
Alteration - SMECTITE
Location: VESICLES Replacing: OL
YELLOW OXIDIZED ZONE*
Vesicles -
Size(mm): .3-1
Filling: SMECTITE
Size(mm): .1-.3
Percent: 1-5
Filling: SMECTITE
PERCENT IS FOR TOTAL VESICLES,SOME WITH LIGHT
GREEN SMECTITE*
Leg : 69 Top/Bottom Interval(mm): 430/ 450 Describer: Noack, Y.
Hole: 505B Top of Core Depth(m) : 164.00 Rock Type: IGNEOUS
Core: 5 Sample Midpoint(m) : 164.44 Sect/Pc #: 1/PCE 197
ROCK = PLAG-OL-CR.SPINEL MOD PHYRIC BASALT
3 ZONES-1)GREY FRESH BASALT WITH YELLOW BROWN
SMECTITE,2)YELLOW OXIDIZED ZONE WITH YELLOW-RED
SMECTITE,3)DARK GREY BASALT WITH YELLOW-BROWN
SMECTITE AND DARK BROWN MESOSTASIS;
Texture: MOD PHYRIC,DENDRITIC,OPHITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): .3-1
PLAGIOCLASE
Size(mm): 1-3
PLAGIOCLASE
Size(mm): .3-1
CHROME SPINEL ( TR%)
Size(mm): .3-1
UNKNOWN FE-OXIDE(?)MINERAL WITH SIMILAR
REFLECTIVITY TO CR-SPINEL(BUT LIMITED BIREFRING.)
AND CR-SPINEL AS PROJECTING EUHEDRAL OR SUBHEDRAL
XTLS IN CLAY FILLED VESICLES,FINE SKELETAL AND
VERMICULAR TEXTURE*
Groundmass - OLIVINE ( 1-5%)
Size(mm): .1-.3
PERCENT IS FOR TOTAL OL IN SECTION;
PLAGIOCLASE
Size(mm): .1-.3
PLAGIOCLASE (20-40%)
Size(mm): .03-.1
PERCENT IS FOR TOTAL PLAG IN SECTION,APPROX COMP
AN55-65;
PYRITE
AS EUHEDRAL XTLS IN VESICLES(SECONDARY)OR
SUBHEDRAL/EUHEDRAL SPECKS IN MESOSTASIS(PRIMARY?);
TITANOMAGNETITE
AS DISSEMINATED EUHEDRAL XTLS WITH SOME SKELETAL
FORMS,MOSTLY SUBMICROSCOPIC,CR-SPINEL,TITANO-MAGN
AND PYRITE = 1%*
Alteration - CALCITE
Location: VESICLES,
Location: CRACKS
SMECTITE
Location: VESICLES Replacing: OL
Vesicles -
Size(mm): .3-1
Filling: CALCITE,SMEC
Size(mm): .1-.3
Filling: CALCITE,SMEC
Size(mm): .03-.1
Percent: 5-10
Filling: CALCITE,SMEC
PERCENT IS FOR TOTAL VESICLES*
Leg : 69 Top/Bottom Interval(mm): 930/ 950 Describer: Noack, Y.
Hole: 505B Top of Core Depth(m) : 164.00 Rock Type: IGNEOUS
Core: 5 Sample Midpoint(m) : 164.94 Sect/Pc #: 1/PCE 204
ROCK = PLAG-OL-CPX MOD PHYRIC BASALT
FRESH PILLOW INTERIOR*
Texture: MOD PHYRIC,DENDRITIC;
Where sampled: PILLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): .3-1 Morphology: EUHEDRAL
PLAGIOCLASE
Size(mm): 1-3 Morphology: SUBHEDRAL
PLAGIOCLASE
Size(mm): .3-1 Morphology: SUBHEDRAL
CLINOPYROXENE ( .5-1%)
Size(mm): .3-1
Groundmass - OLIVINE ( 1-5%)
Size(mm): .1-.3 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL OL IN SECTION;
PLAGIOCLASE
Size(mm): .1-.3 Morphology: SUBHEDRAL
PLAGIOCLASE (20-40%)
Size(mm): .03-.1 Morphology: SUBHEDRAL
PERCENT IS FOR TOTAL PLAG IN SECTION,APPROX COMP
AN55-65;
CHROME SPINEL ( TR%)
AS EUHEDRAL XTLS IN MESOSTASIS OR IN OL XTLS,NO
VERMICULAR OR SKELETAL TEXTURE;
PYRITE
TRACE IN OL(SECONDARY),REMAINDER AS EUHEDRAL AND
SUBHEDRAL XTLS IN MESOSTASIS AND PLAG;
TITANOMAGNETITE
IN MESOSTASIS AND ASSOCIATED WITH VESICLES AS
SUBMICROSCOPIC EUHEDRAL XTLS,CR-SPINEL + PYRITE AN
TITANO-MAGN<1%,PYRITE/TITANO-MAGN=1/9*
Alteration - SMECTITE
Location: VESICLES
Vesicles -
Size(mm): .1-.3
Percent: .5-1
Filling: SMECTITE
SEGREGATION VESICLES WITH LIGHT GREEN SMECTITE(IN
CROSSED POLARS,YELLOW GREEN IN PLANE POLARIZED
LIGHT)*
Leg : 69 Top/Bottom Interval(mm): 510/ 560 Describer: Noack, Y.
Hole: 505B Top of Core Depth(m) : 169.00 Rock Type: IGNEOUS
Core: 6 Sample Midpoint(m) : 169.54 Sect/Pc #: 1/PCE 211
ROCK = PLAG-OL MOD PHYRIC BASALT;
Texture: MOD PHYRIC,DENDRITIC-OPHITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): .3-1
PLAGIOCLASE
Size(mm): .3-1
Groundmass - OLIVINE ( 1-5%)
Size(mm): .1-.3
PERCENT IS FOR TOTAL OL IN SECTION;
PLAGIOCLASE
Size(mm): .1-.3
PLAGIOCLASE (20-40%)
Size(mm): .03-.1
PERCENT IS FOR TOTAL PLAG IN SECTION,APPROX COMP
AN55-70;
CHROME SPINEL ( TR%)
AS SMALL ISOLATED EUHEDRAL XTLS IN THE MESOSTASIS,
NON-VERMICULAR AND NON-SKELETAL;
PYRITE
AS SEVERAL LARGE EUHEDRAL GRAINS IN MESOSTASIS
(SECONDARY?),REMAINDER SMALL AND DISSEMINATED
(EUHEDRAL);
TITANOMAGNETITE
SUBMICROSCOPIC AS EUHEDRAL OR SKELETAL(LIMITED
AMOUNT)XTLS,CR-SPINEL + PYRITE AND TITANO-MAGN=1% O
SLIDE*
Alteration - SMECTITE
Location: VESICLES,
Location: CRACKS
ZEOLITE
Location: VESICLES
Vesicles -
Size(mm): .1-.3
Percent: .5-1
Filling: SMEC,ZEOLITES
IN VESICLES,SMALL ELONGATE XTLS WITH LOW
BIREFRINGENCE-PHILLIPSITE?*
Leg : 69 Top/Bottom Interval(mm): 1120/1140 Describer: Noack, Y.
Hole: 505B Top of Core Depth(m) : 169.00 Rock Type: IGNEOUS
Core: 6 Sample Midpoint(m) : 170.13 Sect/Pc #: 1/PCE 218
ROCK = PLAG-OL MOD PHYRIC BASALT
FRESH FLOW INTERIOR WITH YELLOW OXIDIZED ZONE;
Texture: MOD PHYRIC,OPHITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): .3-1
PLAGIOCLASE
Size(mm): 3-10
PLAGIOCLASE
Size(mm): 1-3
PLAGIOCLASE
Size(mm): .3-1
Groundmass - OLIVINE ( .5-1%)
Size(mm): .1-.3
PERCENT IS FOR TOTAL OL IN SECTION;
PLAGIOCLASE ( >40%)
Size(mm): .1-.3
PERCENT IS FOR TOTAL PLAG IN SECTION;
CHROME SPINEL
Morphology: EUHEDRAL
NON-SKELETAL AND NON-VERMICULAR,OCCUR IN
GROUNDMASS;
PYRITE
AS LARGE EUHEDRAL AND SUBHEDRAL GRAINS SOMETIMES
LOOKING FRACTURED,ASSOCIATED WITH SMECTITE AND IS
SECONDARY;
ILMENITE ( TR%)
TITANOMAGNETITE
2 SIZE RANGES,LARGER FORMS ARE EUHEDRAL AND
SKELETAL,SMALLER MAINLY EUHEDRAL,PYRITE/TITANO-
MAGN CONTACTS SHARP,CR-SPIN + PYRITE AND TITANO-MAG
=1% OF SLIDE*
Alteration - SMECTITE
Location: VESICLES Replacing: OL
Vesicles -
Size(mm): .3-1
Filling: SMECTITE
Size(mm): .1-.3
Percent: .5-1
Filling: SMECTITE
PERCENT IS FOR TOTAL VESICLES*
Leg : 69 Top/Bottom Interval(mm): 380/ 400 Describer: Noack, Y.
Hole: 505B Top of Core Depth(m) : 169.00 Rock Type: IGNEOUS
Core: 6 Sample Midpoint(m) : 170.89 Sect/Pc #: 2/PCE 225
ROCK = PLAG-OL MOD PHYRIC BASALT
WITH YELLOW OXIDIZED ZONE;
Texture: MOD PHYRIC,DENDRITIC-OPHITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): 1-3 Morphology: EUHEDRAL
OLIVINE ( 1-5%)
Size(mm): .3-1 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL OL PHENOS;
PLAGIOCLASE
Size(mm): 1-3 Morphology: SUBHEDRAL
PLAGIOCLASE
Size(mm): .3-1 Morphology: SUBHEDRAL
Groundmass - PLAGIOCLASE (20-40%)
Size(mm): .1-.3 Morphology: SUBHEDRAL
PERCENT IS FOR TOTAL PLAG IN SECTION,APPROX COMP
AN55-70;
CHROME SPINEL ( TR%)
AS EUHEDRAL XTLS ENCLOSED BY OL-SEVERAL TO ANY ONE
OL,SOME SKELETAL AND VERMICULAR;
PYRITE
AS LARGE AGGREGATES ELONGATED INTO "VEINS" ONLY IN
GROUNDMASS(SECONDARY),REMAINDER AS SUBMICROSCOPIC
EUHEDRAL GRAINS IN MESOSTASIS;
TITANOMAGNETITE
DISSEMINATED,OCCUR AS EUHEDRAL/SUBHEDRAL AND RARE
SKELETAL GRAINS,CR-SPINEL + TITANO-MAGN AND PYRITE
<1% OF SLIDE*
Alteration - SMECTITE
Location: VESICLES Replacing: OL
ALONG CRACKS IN OL*
Vesicles -
Size(mm): .3-1
Filling: SMECTITES
Size(mm): .1-.3
Percent: .5-1
Filling: SMECTITES
SEGREGATION VESICLES,PERCENT IS FOR TOTAL
VESICLES*
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