Leg : 69 Top/Bottom Interval(mm): 1050/1070 Describer: damson, A.C.
Hole: 504B Top of Core Depth(m) : 270.00 Rock Type: IGNEOUS
Core: 2 Sample Midpoint(m) : 271.06 Sect/Pc #: 1/PCE 233
ROCK = APHYRIC BASALT
THERE ARE 2 OR 3 LARGE PHENOS-REMAINDER ARE LARGE
MICROLITES OR CPX GLOMEROCRYSTS;
Texture: APHYRIC,SUBOPHITIC-VARIOLITIC;
Where sampled: FLOW INTERIOR*
Groundmass - OLIVINE
Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL
OLIVINE
Size(mm): .1-.3 Morphology: EUHEDRAL,SUBHEDRAL
OLIVINE ( 1-5%)
Size(mm): .03-.1 Morphology: EUHEDRAL,SUBHEDRAL
PERCENT IS FOR TOTAL OL,COMPLETELY ALTERED TO
BROWN/GREEN CLAYS;
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL,SUBHEDRAL,DENDRITIC
PLAGIOCLASE
Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL,DENDRITIC
PLAGIOCLASE (10-20%)
Size(mm): .1-.3 Morphology: EUHEDRAL,SUBHEDRAL,DENDRITIC
PERCENT IS FOR TOTAL PLAG,APPROX COMP AN70-78,
MOSTLY AS MICROLITES(MICROLITES SHOW A GRADATION
IN SIZE UP TO PHENO SIZE BUT ARE MUCH THINNER)BUT
A FEW LARGER PHENOS AND GLOMEROCRYSTS(3 OR 4),
SHOWING ZONING TO SODIC RIMS;
CLINOPYROXENE
Size(mm): .3-1 Morphology: GRANULAR,SUBHEDRAL
CLINOPYROXENE
Size(mm): .1-.3 Morphology: GRANULAR,SUBHEDRAL
CLINOPYROXENE (10-20%)
Size(mm): .03-.1 Morphology: GRANULAR,SUBHEDRAL
CPX AS AGGREGATES AND MICROPHENOS SUBOPHITIC TO
PLAG,GROUNDMASS COMPOSED OF SPHERULITE XTLS(CPX+
PLAG)IN CLAYS+GLASS TOGETHER WITH SMALL ANHEDRAL
CPX GRAINS,PERCENT IS FOR TOTAL CPX;
SPHERULITIC MESOSTASIS ( >40%)
TITANOMAGNETITE ( 1-5%)
Morphology: SKELETAL,EUHEDRAL,SUBHEDRAL
REFLECTED LIGHT-CONTAINS IDDINGSITE(VERMICULAR+
SKELETAL),PYRITE AND TITANO-MAGN <1%(PYRITE/TITANO
MAGN=30/70),PYRITE SUBHEDRAL/EUHEDRAL AND A FEW
SKELETAL,SOME ASSOCIATED WITH CLAY FILLED(OR
CACO3)VESICLES,DISSEMINATED AND PROBABLY PRIMARY,
TITANO-MAGN/PYRITE BOUNDARY NOT DISTINCT-POSSIBLE
OXIDATION OF PYRITE(?),CONFINED TO MESOSTASIS*
Alteration - SMECTITE
Location: VESICLES Replacing: OL
BROWN/GREEN;
FERROUS OXIDE
Replacing: IDDINGSITE
RED,ID UNCERTAIN FOR FE-OXIDES*
Vesicles -
Size(mm): .03-.1
Percent: TR
Filling: SMEC+CALCITE
Shape: ROUND
PERCENT=.5,FILLED WITH PALE BROWN SMEC+TRACE OF
CALCITE*
Leg : 69 Top/Bottom Interval(mm): 1050/1070 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 270.00 Rock Type: IGNEOUS
Core: 2 Sample Midpoint(m) : 271.06 Sect/Pc #: 1/PCE 233
ROCK = PLAG MOD PHYRIC BASALT;
Texture: MOD PHYRIC,MICROLITIC,SPHERULITIC;
Where sampled: PILLOW INTERIOR*
Phenocrysts- PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL,SUBHEDRAL
Groundmass - OLIVINE
Size(mm): .3-1 Morphology: EUHEDRAL,ANHEDRAL
OLIVINE ( 1-5%)
Size(mm): .1-.3 Morphology: EUHEDRAL,ANHEDRAL
PERCENT IS FOR TOTAL OL;
PLAGIOCLASE
Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL
PLAGIOCLASE
Size(mm): .1-.3 Morphology: EUHEDRAL,SUBHEDRAL
PLAGIOCLASE (20-40%)
Size(mm): .03-.1 Morphology: EUHEDRAL,SUBHEDRAL
PERCENT IS FOR TOTAL PLAG;
CLINOPYROXENE
Size(mm): .3-1 Morphology: ANHEDRAL
CLINOPYROXENE
Size(mm): .1-.3 Morphology: ANHEDRAL
CLINOPYROXENE ( 1-5%)
Size(mm): .03-.1 Morphology: ANHEDRAL
PERCENT IS FOR TOTAL CPX;
SPHERULITIC MESOSTASIS (20-40%)
TITANOMAGNETITE
Size(mm): .03-.1 Morphology: SKELETAL
Alteration - SMECTITE
Replacing: OL
CELADONITE
Replacing: OL
FERROUS OXIDE
Location: CRACKS Replacing: CELADONITE
Leg : 69 Top/Bottom Interval(mm): 60/ 80 Describer: Noack, Y.
Hole: 504B Top of Core Depth(m) : 278.00 Rock Type: IGNEOUS
Core: 3 Sample Midpoint(m) : 278.07 Sect/Pc #: 1/PCE 238
ROCK = APHYRIC BASALT;
Texture: APHYRIC-MICROPHYRIC*
Groundmass - OLIVINE
Size(mm): .3-1 Morphology: EUHEDRAL
OLIVINE
Size(mm): .1-.3 Morphology: EUHEDRAL
OLIVINE ( 1-5%)
Size(mm): .03-.1 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL OL,ALTERED,VERY DARK
GROUNDMASS;
PLAGIOCLASE
Size(mm): .3-1 Morphology: EUHEDRAL,DENDRITIC
PLAGIOCLASE
Size(mm): .1-.3 Morphology: EUHEDRAL,DENDRITIC
PLAGIOCLASE (20-40%)
Size(mm): .03-.1 Morphology: EUHEDRAL,DENDRITIC
PERCENT IS FOR TOTAL PLAG,APPROX COMP AN50-60;
CLINOPYROXENE
Size(mm): .1-.3
CLINOPYROXENE ( 1-5%)
Size(mm): .03-.1
AGGLOMERATES OF PLAG AND CPX*
Alteration - CLAY MINERALS
Location: VESICLES Replacing: OL
PLUS CRACK WITH LIGHT BROWN/FIBROUS/GREY CLAY IN
THE MIDDLE OF THE THIN SECTION*
Vesicles -
Size(mm): .1-.3
Filling: CLAYS
Size(mm): .03-.1
Percent: 1-5
Filling: CLAYS
PERCENT IS FOR TOTAL VESICLES,FILLED WITH GREEN OR
RED BROWN OR YELLOW LIGHT BROWN CLAYS,OFTEN WITH
GREEN RIM AND BROWN CORE*
Leg : 69 Top/Bottom Interval(mm): 870/ 890 Describer: Noack, Y.
Hole: 504B Top of Core Depth(m) : 278.00 Rock Type: IGNEOUS
Core: 3 Sample Midpoint(m) : 278.88 Sect/Pc #: 1/PCE 250
ROCK = APHYRIC BASALT;
Texture: APHYRIC-MICROPHYRIC,
Where sampled: FLOW INTERIOR*
Groundmass - OLIVINE
Size(mm): .3-1 Morphology: EUHEDRAL
OLIVINE ( 1-5%)
Size(mm): .1-.3 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL OL,VERY DARK GROUNDMASS;
PLAGIOCLASE
Size(mm): .3-1
PLAGIOCLASE
Size(mm): .1-.3
PLAGIOCLASE (20-40%)
Size(mm): .03-.1
PERCENT IS FOR TOTAL PLAG;
CLINOPYROXENE
Size(mm): .1-.3
CLINOPYROXENE (20-40%)
Size(mm): .03-.1
PERCENT IS FOR TOTAL CPX*
Alteration - CLAY MINERALS
Location: VESICLES Replacing: OL
YELLOW-BROWN*
Vesicles -
Size(mm): .1-.3
Filling: CLAYS
Size(mm): .03-.1
Percent: 1-5
Filling: CLAYS
PERCENT IS FOR TOTAL VESICLES*
Leg : 69 Top/Bottom Interval(mm): 1080/1100 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 278.00 Rock Type: IGNEOUS
Core: 3 Sample Midpoint(m) : 279.09 Sect/Pc #: 1/PCE 253
ROCK = APHYRIC BASALT
ICD LISTS ROCK AS APHYRIC,HOWEVER PLAG AND OL
XTLS UP TO 3MM ARE PRESENT;
Texture: APHYRIC,OPHITIC;
Where sampled: PILLOW INTERIOR*
Groundmass - OLIVINE
Size(mm): 1-3 Morphology: EUHEDRAL,ANHEDRAL
OLIVINE
Size(mm): .3-1 Morphology: EUHEDRAL,ANHEDRAL
OLIVINE ( 1-5%)
Size(mm): .1-.3
PERCENT IS FOR TOTAL OL;
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL,SUBHEDRAL
PLAGIOCLASE
Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL
PLAGIOCLASE (20-40%)
Size(mm): .1-.3 Morphology: EUHEDRAL,SUBHEDRAL
PERCENT IS FOR TOTAL PLAG;
CLINOPYROXENE
Size(mm): .3-1 Morphology: ANHEDRAL
CLINOPYROXENE (20-40%)
Size(mm): .1-.3 Morphology: ANHEDRAL
PERCENT IS FOR TOTAL CPX;
TITANOMAGNETITE
Size(mm): .3-1 Morphology: SKELETAL
TITANOMAGNETITE ( 1-5%)
Size(mm): .1-.3 Morphology: SKELETAL
PERCENT IS FOR TOTAL TITANO-MAGN*
Alteration - SMECTITE ( 1-5%)
Location: VESICLES Replacing: OL
CELADON ( .5-1%)
Location: VESICLES Replacing: OL
Vesicles -
Size(mm): .1-.3
Percent: .5-1
Filling: SMEC+CELAD
Shape: ROUND
Leg : 69 Top/Bottom Interval(mm): 170/ 190 Describer: Noack, Y.
Hole: 504B Top of Core Depth(m) : 278.00 Rock Type: IGNEOUS
Core: 3 Sample Midpoint(m) : 279.68 Sect/Pc #: 2/PCE 261
ROCK = APHYRIC BASALT
THERE IS AN OXIDIZED ZONE AND A "FRESH" ZONE,THE
OXIDIZED ZONE IS YELLOW;
Texture: APHYRIC,OPHITIC;
Where sampled: FLOW INTERIOR*
Groundmass - OLIVINE
Size(mm): .1-.3 Morphology: EUHEDRAL
OLIVINE ( 1-5%)
Size(mm): .03-.1 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL OL,FRESH;
PLAGIOCLASE
Size(mm): .3-1 Morphology: DENDRITIC
PLAGIOCLASE
Size(mm): .1-.3 Morphology: DENDRITIC
PLAGIOCLASE (20-40%)
Size(mm): .03-.1 Morphology: DENDRITIC
PERCENT IS FOR TOTAL PLAG;
TITANOMAGNETITE
Morphology: EUHEDRAL
ALSO PYRITE+UNKNOWN FE-OXIDE(ISOTROPIC,CUBIC,
REFLECTIVITY APPROX 20-25),OCCUR AS EUHEDRAL XTLS
PROJECTING INTO VESICLES(OR IN CENTERS) COVERED BY
RED SMECTITE OR GREEN(RARE)APPROX .5%,TITANO-MAGN
SKELETAL(+EUHEDRAL+SUBHEDRAL)APPROX .5%,PYRITE-
TRACE IN VESICLES*
Vesicles -
Size(mm): .1-.3
Filling: CLAYS
Size(mm): .3-1
Percent: .5-1
Filling: CLAYS
IN "FRESH" ZONE PALE YELLOW IN PLANE POLARIZED
LIGHT-GRANULAR+DARK GREEN IN CROSSED POLAR,IN
OXIDIZED ZONE GREEN OR YELLOW-RED IN PLANE
POLARIZED LIGHT GRANULAR+GREEN OR GREENISH
YELLOW IN CROSSED POLARS,WITH FE-OXIDE RIMS-
IDENTICAL FOR OL*
Leg : 69 Top/Bottom Interval(mm): 320/ 360 Describer: Noack, Y.
Hole: 504B Top of Core Depth(m) : 280.00 Rock Type: IGNEOUS
Core: 4 Sample Midpoint(m) : 280.34 Sect/Pc #: 1/PCE 269
ROCK = PLAG-OL MOD PHYRIC BASALT;
Texture: MOD PHYRIC,SPHERULITIC,
Where sampled: PILLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): 1-3 Morphology: EUHEDRAL
OLIVINE ( 1-5%)
Size(mm): .3-1 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL OL,ALTERED TO 1)YELLOW IN
PLANE POLARIZED LIGHT,FIBROUS(2ND ORDER COLORS
IN CROSSED POLARS)CLAYS,2)GREEN,GRANULAR CLAYS;
PLAGIOCLASE
Size(mm): 1-3 Morphology: DENDRITIC,SKELETAL
PLAGIOCLASE
Size(mm): .3-1 Morphology: DENDRITIC,SKELETAL
Groundmass - PLAGIOCLASE
Size(mm): .1-.3 Morphology: DENDRITIC,SKELETAL
PLAGIOCLASE (20-40%)
Size(mm): .03-.1 Morphology: DENDRITIC,SKELETAL
PERCENT IS FOR TOTAL PLAG IN SECTION,APPROX COMP
AN50-60;
SPINEL ( TR%)
Morphology: EUHEDRAL+SKELETAL
CR-SPINEL;
TITANOMAGNETITE ( <.5%)
Morphology: SKELETAL+EUHEDRAL-SUBHEDRAL
SUBMICROSCOPIC,DISSEMINATED IN MESOSTASIS;
PYRITE ( <.5%)
Morphology: EUHEDRAL
MAINLY AS SECONDARY VEINING-DRAWN OUT AGGREGATES
(SKELETAL+EUHEDRAL),SEPARATE GRAINS FE-OXIDE(?) IN
OL PSEUDOMORPH ENCLOSING EUHEDRAL PYRITE,FE-OXIDE
IS SKELETAL*
Alteration - CLAY MINERALS
Location: VESICLES Replacing: OL
ALSO CRACK WITH GREEN CLAYS*
Vesicles -
Percent: .5-1
Filling: CLAYS
RARE,WITH GREEN CLAYS*
Leg : 69 Top/Bottom Interval(mm): 800/ 840 Describer: Noack, Y.
Hole: 504B Top of Core Depth(m) : 280.00 Rock Type: IGNEOUS
Core: 4 Sample Midpoint(m) : 282.32 Sect/Pc #: 2/PCE 302
ROCK = PLAG-OL MOD PHYRIC BASALT
FRESH GLASSY MARGIN;
Texture: MOD PHYRIC,VARIOLITIC-SPHERULITIC;
Where sampled: PILLOW RIM*
Phenocrysts- OLIVINE
Size(mm): .3-1 Morphology: EUHEDRAL
FRESH IN GLASS,ALTERED TO YELLOW IN PLANE
POLARIZED LIGHT,2ND ORDER COLORS IN CROSSED
POLARS,CLAYS;
PLAGIOCLASE
Size(mm): .3-1
Groundmass - PLAGIOCLASE
Size(mm): .1-.3
APPROX COMP AN55-70*
Alteration - SMECTITE
Location: CRACKS Replacing: OL
GREEN CLAYS IN CRACKS*
Vesicles -
Percent: 0
Leg : 69 Top/Bottom Interval(mm): 920/ 960 Describer: Noack, Y.
Hole: 504B Top of Core Depth(m) : 280.00 Rock Type: IGNEOUS
Core: 4 Sample Midpoint(m) : 283.94 Sect/Pc #: 3/PCE 320
ROCK = PLAG-OL-CPX MOD PHYRIC BASALT;
Texture: MOD PHYRIC;
Where sampled: PILLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): .3-1 Morphology: EUHEDRAL
PLAGIOCLASE
Size(mm): 1-3 Morphology: DENDRITIC,SKELETAL
PLAGIOCLASE
Size(mm): .3-1 Morphology: DENDRITIC,SKELETAL
CLINOPYROXENE ( .5-1%)
Size(mm): .3-1 Morphology: SKELETAL,DENDRITIC
Groundmass - OLIVINE ( 1-5%)
Size(mm): .1-.3 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL OL IN SECTION,ALTERED TO
YELLOW-BROWN,FIBROUS,2ND ORDER IN CROSSED POLARS
MINERALS-CLAYS?;
PLAGIOCLASE
Size(mm): .1-.3 Morphology: DENDRITIC,SKELETAL
PLAGIOCLASE (20-40%)
Size(mm): .03-.1 Morphology: DENDRITIC,SKELETAL
APPROX COMP AN50-60*
Alteration - CALCITE ( TR%)
Location: VESICLES
CLAY MINERALS
Location: VESICLES Replacing: OL
Vesicles -
Size(mm): 3-10
Filling: CALCITE,CLAYS
Size(mm): 1-3
Percent: 1-5
Filling: CALCITE,CLAYS
VESICLES AND CAVITIES WITH 1)GREEN,GRANULAR OR
FIBROUS CLAYS AND FE-OXIDES(?),2)YELLOW-BROWN
MINERALS(LIKE IN OL)WITH,OFTEN,GREEN GRANULAR RIM,
3)YELLOW,FIBROUS,GRAY IN CROSSED POLARS MINERALS,
4)VERY LIGHT GREEN IN PLANE POLARIZED LIGHT,GRAY
IN CROSSED POLARS,GRANULAR MINERALS(?)*
Leg : 69 Top/Bottom Interval(mm): 410/ 430 Describer: Noack, Y.
Hole: 504B Top of Core Depth(m) : 280.00 Rock Type: IGNEOUS
Core: 4 Sample Midpoint(m) : 284.92 Sect/Pc #: 4/PCE 330
ROCK = PLAG-OL MOD PHYRIC BASALT;
Texture: MOD PHYRIC,MICROPHYRIC;
Where sampled: FLOW 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,DARK GNDMASS;
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;
CLINOPYROXENE
Size(mm): .03-.1 Morphology: SPHERULITIC
CLINOPYROXENE ( >40%)
Size(mm): .01-.03 Morphology: SPHERULITIC
PERCENT IS FOR TOTAL CPX*
Alteration - CLAY MINERALS
Location: VESICLES Replacing: OL
YELLOW AND RED-BROWN*
Vesicles -
Size(mm): .1-.3
Percent: .5-1
Filling: CLAYS
Leg : 69 Top/Bottom Interval(mm): 830/ 870 Describer: Noack, Y.
Hole: 504B Top of Core Depth(m) : 280.00 Rock Type: IGNEOUS
Core: 4 Sample Midpoint(m) : 285.35 Sect/Pc #: 4/PCE 336
ROCK = PLAG-OL MOD PHYRIC BASALT
SAME AS 4-3-92-96;
Texture: MOD PHYRIC,OPHITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): .3-1 Morphology: EUHEDRAL
PLAGIOCLASE
Size(mm): .3-1 Morphology: EUHEDRAL,DENDRITIC
FRESH*
Groundmass - OLIVINE ( 1-5%)
Size(mm): .1-.3 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL OL IN SECTION,OL ALTERED TO
YELLOW MINERALS IN PLANE POLARIZED LIGHT,ALTERED
TO FIBROUS GRAY MINERALS IN CROSSED POLARS;
PLAGIOCLASE
Size(mm): .1-.3 Morphology: EUHEDRAL,DENDRITIC
PLAGIOCLASE (20-40%)
Size(mm): .03-.1 Morphology: EUHEDRAL,DENDRITIC
PERCENT IS FOR TOTAL PLAG IN SECTION,FRESH,APPROX
COMP AN45-67*
Alteration - CLAY MINERALS
Location: VESICLES Replacing: OL
CALCITE
Vesicles -
Size(mm): .3-1
Filling: CLAY.MINS
Size(mm): .1-.3
Filling: CLAY.MINS
Size(mm): .03-.1
Percent: 5-10
Filling: CLAY.MINS
PERCENT IS FOR TOTAL VESICLES,ZONE WITH HIGH
DENSITY OF VESICLES FILLED WITH LIGHT YELLOW
MINERALS,FIBROUS GRAY IN CROSSED POLARS,WITH GREEN
GRANULAR RIMS,OR LIGHT GREEN GRANULAR MINERALS,
DARK GREEN IN CROSSED POLARS(SMECTITES?)*
Leg : 69 Top/Bottom Interval(mm): 360/ 410 Describer: Noack, Y.
Hole: 504B Top of Core Depth(m) : 280.00 Rock Type: IGNEOUS
Core: 4 Sample Midpoint(m) : 286.39 Sect/Pc #: 5/PCE 348
ROCK = PLAG-OL MOD PHYRIC BASALT;
Texture: MOD PHYRIC-MICROPHYRIC;
Where sampled: FLOW 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,DARK
GROUNDMASS,RELICS OF FRESH OL,OL ALTERED TO YELLOW
CLAYS,FIBROUS 2ND ORDER OR GRAY IN CROSSED POLARS;
PLAGIOCLASE
Size(mm): .1-.3 Morphology: SKELETAL,DENDRITIC
PLAGIOCLASE (20-40%)
Size(mm): .03-.1 Morphology: SKELETAL,DENDRITIC
PERCENT IS FOR TOTAL PLAG;
CLINOPYROXENE
Size(mm): .03-.1
CLINOPYROXENE ( >40%)
Size(mm): .01-.03
PERCENT IS FOR TOTAL CPX*
Alteration - CLAY MINERALS
Location: VESICLES Replacing: OL
YELLOW*
Vesicles -
Size(mm): .1-.3
Filling: YELLOW CLAY.MIN
Size(mm): .03-.1
Percent: .5-1
Filling: YELLOW CLAY.MIN
PERCENT IS FOR TOTAL VESICLES,VESICLES WITH YELLOW
CLAYS GRANULAR,GRAYISH YELLOW IN CROSSED POLARS*
Leg : 69 Top/Bottom Interval(mm): 870/ 890 Describer: Noack, Y.
Hole: 504B Top of Core Depth(m) : 280.00 Rock Type: IGNEOUS
Core: 4 Sample Midpoint(m) : 286.88 Sect/Pc #: 5/PCE 353
ROCK = PLAG-OL MOD PHYRIC BASALT
FRESH GLASSY ZONE-ONLY SOME XTLLIZED PATCHES IN
SPHERULITIC ZONE-CRACK WITH FIBROUS MINERALS(GREEN
AND WHITE IN PLANE POLARIZED LIGHT-GREEN AND GRAY
IN CROSSED POLARS);
Texture: MOD PHYRIC,VARIOLITIC,SPHERULITIC;
Where sampled: PILLOW RIM*
Phenocrysts- OLIVINE
Size(mm): 1-3 Morphology: EUHEDRAL
OLIVINE ( 1-5%)
Size(mm): .3-1 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL OL,ALTERED TO CLAYS(YELLOW IN
PLANE POLARIZED LIGHT-YELLOW-GREY IN CROSSED
POLARS) AND MAYBE TALC(?);
PLAGIOCLASE
Size(mm): 1-3
PLAGIOCLASE
Size(mm): .3-1
FRESH*
Groundmass - PLAGIOCLASE
Size(mm): .1-.3
FRESH,APPROX COMP AN50-60;
PALAGONITE ( 0%)
Leg : 69 Top/Bottom Interval(mm): 860/ 920 Describer: Noack, Y.
Hole: 504B Top of Core Depth(m) : 289.50 Rock Type: IGNEOUS
Core: 5 Sample Midpoint(m) : 290.39 Sect/Pc #: 1/PCE 365
ROCK = PLAG-OL PHYRIC BASALT;
Texture: PHYRIC,SPHERULITIC;
Where sampled: PILLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): 1-3 Morphology: EUHEDRAL
OLIVINE ( 1-5%)
Size(mm): .3-1 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL OL PHENOS,FRESH RELICS;
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL
PLAGIOCLASE (10-20%)
Size(mm): .3-1 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL PLAG PHENOS*
Groundmass - OLIVINE
Size(mm): .1-.3 Morphology: EUHEDRAL
OLIVINE ( .5-1%)
Size(mm): .03-.1 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL GROUNDMASS OL,ALTERED TO
CLAYS AND FE-OXIDES(AND TALC),MICROLITES ALTERED;
CLINOPYROXENE
PLAGIOCLASE
Size(mm): .1-.3 Morphology: SKELETAL,DENDRITIC
PLAGIOCLASE (20-40%)
Size(mm): .03-.1 Morphology: SKELETAL,DENDRITIC
PERCENT IS FOR TOTAL GROUNDMASS PLAG;
SPHERULITIC MESOSTASIS ( >40%)
Morphology: PLUMOSE
TITANOMAGNETITE ( TR%)
Size(mm): .01-.03
Alteration - CLAY MINERALS
Location: GROUNDMASS Replacing: OL
FERROUS OXIDE
Location: CRACKS+ Replacing: OL
Location: GROUNDMASS
Vesicles -
Size(mm): .01-.03
Percent: TR
Leg : 69 Top/Bottom Interval(mm): 1100/1150 Describer: Noack, Y.
Hole: 504B Top of Core Depth(m) : 289.50 Rock Type: IGNEOUS
Core: 5 Sample Midpoint(m) : 292.13 Sect/Pc #: 2/PCE 384
ROCK = PLAG-OL MOD PHYRIC BASALT;
Texture: MOD PHYRIC,SPHERULITIC;
Where sampled: PILLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): 1-3 Morphology: EUHEDRAL
OLIVINE ( 1-5%)
Size(mm): .3-1 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL OL PHENOS,PHENOS AND
MICROLITES ALTERED TO GREEN CLAYS,(TALC) AND
FE-OXIDES;
PLAGIOCLASE
Size(mm): 1-3
PLAGIOCLASE ( 5-10%)
Size(mm): .3-1
PERCENT IS FOR TOTAL PLAG PHENOS,SOME
GLOMEROCRYSTS(1-2MM)*
Groundmass - OLIVINE
Size(mm): .1-.3 Morphology: EUHEDRAL
OLIVINE ( 1-5%)
Size(mm): .03-.1 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL GROUNDMASS OL;
PLAGIOCLASE
Size(mm): .1-.3
PLAGIOCLASE (20-40%)
Size(mm): .03-.1
PERCENT IS FOR TOTAL GROUNDMASS PLAG,REXTLLIZED
GLASSY INCLUSIONS IN PLAG;
SPHERULITIC MESOSTASIS ( >40%)
Morphology: PLUMOSE
TITANOMAGNETITE ( TR%)
Size(mm): .01-.03
Alteration - CLAY MINERALS
Location: GROUNDMASS Replacing: OL
YELLOW AND GREEN,CRACK WITH YELLOW CLAYS;
FERROUS OXIDE
Location: GROUNDMASS Replacing: OL
ABUNDANT IN GROUNDMASS*
Vesicles -
Percent: TR
Leg : 69 Top/Bottom Interval(mm): 460/ 480 Describer: Noack, Y.
Hole: 504B Top of Core Depth(m) : 289.50 Rock Type: IGNEOUS
Core: 5 Sample Midpoint(m) : 292.97 Sect/Pc #: 3/PCE 391
ROCK = PLAG-OL MOD PHYRIC BASALT;
Texture: MOD PHYRIC,SPHERULITIC;
Where sampled: PILLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): 1-3 Morphology: EUHEDRAL
OLIVINE ( 1-5%)
Size(mm): .3-1 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL OL PHENOS,ALTERED TO YELLOW
CLAYS+TALC AND FE-OXIDES,ID UNCERTAIN FOR TALC;
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL
PLAGIOCLASE ( 5-10%)
Size(mm): .3-1 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL PLAG PHENOS,GLOMEROCRYSTS(1-2
MM)*
Groundmass - OLIVINE
Size(mm): .1-.3 Morphology: EUHEDRAL
OLIVINE ( 1-5%)
Size(mm): .03-.1 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL GROUNDMASS OL,ALTERED IN SAME
MANNER AS OL PHENOS;
PLAGIOCLASE
Size(mm): .1-.3 Morphology: SKELETAL,TABULAR,DENDRITIC
PLAGIOCLASE (10-20%)
Size(mm): .03-.1 Morphology: SKELETAL,TABULAR,DENDRITIC
PERCENT IS FOR TOTAL GROUNDMASS PLAG;
CLINOPYROXENE
Morphology: PLUMOSE
SPHERULITIC MESOSTASIS ( >40%)
TITANOMAGNETITE ( TR%)
Size(mm): .01-.03
CHROME SPINEL ( TR%)
Size(mm): .03-.1
Alteration - CLAY MINERALS
Location: CRACKS+ Replacing: OL
Location: GROUNDMASS
YELLOW;
TALC
Replacing: OL
ID UNCERTAIN FOR TALC;
FERROUS OXIDE
Location: CRACKS+ Replacing: OL
Location: GROUNDMASS
Vesicles -
Percent: TR
Leg : 69 Top/Bottom Interval(mm): 780/ 790 Describer: Noack, Y.
Hole: 504B Top of Core Depth(m) : 298.50 Rock Type: IGNEOUS
Core: 6 Sample Midpoint(m) : 299.29 Sect/Pc #: 1/PCE 405
ROCK = PLAG-OL MOD PHYRIC BASALT;
Texture: MOD PHYRIC,SPHERULITIC;
Where sampled: PILLOW RIM*
Phenocrysts- OLIVINE
Size(mm): .3-1 Morphology: EUHEDRAL
PLAGIOCLASE ( 5%)
Size(mm): .3-1 Morphology: DENDRITIC
FRESH RELIC PHENOS,APPROX COMP AN55-65*
Groundmass - OLIVINE ( 1-5%)
Size(mm): .1-.3 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL OL IN SECTION,ALTERED TO
CLAYS+TALC?;
PLAGIOCLASE
Size(mm): .1-.3 Morphology: DENDRITIC
PLAGIOCLASE (10-20%)
Size(mm): .03-.1 Morphology: DENDRITIC
PERCENT IS FOR TOTAL PLAG IN SECTION;
SPHERULITIC MESOSTASIS ( >40%)
Alteration - CLAY MINERALS (S %)
CRACK WITH YELLOW-GREEN MINERALS*
TALC
ID UNCERTAIN FOR TALC*
Vesicles -
Percent: 0
Leg : 69 Top/Bottom Interval(mm): 1460/1480 Describer: Noack, Y.
Hole: 504B Top of Core Depth(m) : 298.50 Rock Type: IGNEOUS
Core: 6 Sample Midpoint(m) : 299.97 Sect/Pc #: 1/PCE 413
ROCK = PLAG-OL MOD PHYRIC BASALT
GLASSY MARGIN;
Texture: MOD PHYRIC,VARIOLITIC,SPHERULITIC;
Where sampled: PILLOW RIM*
Phenocrysts- OLIVINE
Size(mm): 1-3 Morphology: EUHEDRAL
OLIVINE
Size(mm): .3-1 Morphology: EUHEDRAL
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL
PLAGIOCLASE ( 5-10%)
Size(mm): .3-1 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL PLAG PHENOS*
Groundmass - OLIVINE ( 1-5%)
Size(mm): .1-.3 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL OL IN SECTION,ALTERED EVEN IN
FRESH GLASS(WITH FRESH RELICS);
PLAGIOCLASE
Size(mm): .03-.1 Morphology: SKELETAL,DENDRITIC
PLAGIOCLASE ( 1-5%)
Size(mm): .01-.03 Morphology: SKELETAL,DENDRITIC
PERCENT IS FOR TOTAL GROUNDMASS PLAG,PLAG
MICROLITES MORE ABUNDANT NEAR INTERIOR;
GLASS (10-20%)
ALTERED TO YELLOW CLAYS;
SPHERULITIC MESOSTASIS ( >40%)
Alteration - CLAY MINERALS
Replacing: OL,GLASS
TALC
Replacing: OL
PHILLIPSITE
Location: CRACKS
Vesicles -
Size(mm): .01-.03
Percent: TR
Leg : 69 Top/Bottom Interval(mm): 110/ 130 Describer: Noack, Y.
Hole: 504B Top of Core Depth(m) : 298.50 Rock Type: IGNEOUS
Core: 6 Sample Midpoint(m) : 300.12 Sect/Pc #: 2/PCE 414
ROCK = PLAG SPARSELY MICROPHYRIC BASALT;
Texture: SPARSELY MICROPHYRIC,DENDRITIC;
Where sampled: PILLOW INTERIOR
PILLOW OR FLOW INTERIOR?*
Phenocrysts- PLAGIOCLASE
Size(mm): .3-1
Groundmass - OLIVINE ( .5-1%)
Size(mm): .1-.3
ALTERED TO WHITE-GRAY MINERALS AND FE-OXIDES;
PLAGIOCLASE
Size(mm): .1-.3
PLAGIOCLASE ( 1-5%)
Size(mm): .03-.1
PERCENT IS FOR TOTAL PLAG IN SECTION,APPROX COMP
AN55-70*
Alteration - SMECTITE
Location: VESICLES
GREEN,ALSO THERE IS A LIGHT YELLOW/FIBROUS GRAY OR
LIGHT GREEN/GRANULAR GREEN IN GROUNDMASS AND SMALL
VESICLES*
Vesicles -
Filling: SMECTITE
Leg : 69 Top/Bottom Interval(mm): 930/1000 Describer: Noack, Y.
Hole: 504B Top of Core Depth(m) : 298.50 Rock Type: IGNEOUS
Core: 6 Sample Midpoint(m) : 300.97 Sect/Pc #: 2/PCE 422
ROCK = PLAG-OL PHYRIC BASALT;
Texture: PHYRIC;
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,ALTERED TO YELLOW-
BROWN CLAYS AND FE-OXIDES;
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL
PLAGIOCLASE (10-20%)
Size(mm): .3-1 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL PLAG PHENOS,REXTLLIZED GLASSY
INCLUSIONS IN PLAG PHENOS*
Groundmass - OLIVINE
Size(mm): .1-.3
OLIVINE ( 1-5%)
Size(mm): .03-.1
PERCENT IS FOR TOTAL GROUNDMASS OL;
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
PLAG(AND CPX)MICROLITES ABUNDANT,PERCENT IS FOR
TOTAL GROUNDMASS PLAG;
CLINOPYROXENE
Size(mm): .03-.1
CLINOPYROXENE (20-40%)
Size(mm): .01-.03
PERCENT IS FOR TOTAL CPX;
SPHERULITIC MESOSTASIS (10-20%)
TITANOMAGNETITE ( TR%)
Size(mm): .01-.03
Alteration - CLAY MINERALS
Location: GROUNDMASS Replacing: OL
YELLOW;
FERROUS OXIDE
Location: CRACKS+ Replacing: OL
Location: GROUNDMASS
Vesicles -
Percent: 0
Leg : 69 Top/Bottom Interval(mm): 930/ 950 Describer: Noack, Y.
Hole: 504B Top of Core Depth(m) : 307.50 Rock Type: IGNEOUS
Core: 7 Sample Midpoint(m) : 308.44 Sect/Pc #: 1/PCE 444
ROCK = PLAG-OL PHYRIC BASALT;
Texture: PHYRIC,SPHERULITIC,VARIOLITIC;
Where sampled: PILLOW RIM*
Phenocrysts- OLIVINE
Size(mm): 1-3 Morphology: EUHEDRAL
OLIVINE ( 1-5%)
Size(mm): .3-1 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL OL,ALTERED-REPLACED BY YELLOW
CLAYS AND TALC;
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL
PLAGIOCLASE (10-20%)
Size(mm): .3-1 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL PLAG PHENOS,ALTERED BY CLAY,
GLOMEROCRYSTS OF PLAG(2MM)*
Groundmass - PLAGIOCLASE
Size(mm): .1-.3 Morphology: SKELETAL,DENDRITIC
PLAGIOCLASE
Size(mm): .03-.1 Morphology: SKELETAL,DENDRITIC
PLAGIOCLASE ( 5-10%)
Size(mm): .01-.03
PERCENT IS FOR TOTAL GROUNDMASS PLAG,APPROX COMP
AN55-63;
GLASS ( 5-10%)
ALTERED TO BROWN OR YELLOW FIBROUS MATERIAL(?)
SPHERULITIC MESOSTASIS ( >40%)
Alteration - CLAY MINERALS
Location: CRACKS Replacing: OL,PLAG
PHILLIPSITE
Location: CRACKS
MANY CRACKS WITH CLAYS AND PHILLIPSITE(FAN-SHAPED,
PRISMATIC AND ELONGATED,PARALLELPIPED XTLS);
TALC
Replacing: OL
Vesicles -
Percent: 0
Leg : 69 Top/Bottom Interval(mm): 870/ 890 Describer: Noack, Y.
Hole: 504B Top of Core Depth(m) : 307.50 Rock Type: IGNEOUS
Core: 7 Sample Midpoint(m) : 309.88 Sect/Pc #: 2/PCE 462
ROCK = PLAG-OL PHYRIC BASALT;
Texture: PHYRIC;
Where sampled: PILLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): 1-3 Morphology: EUHEDRAL
OLIVINE ( 5-10%)
Size(mm): .3-1 Morphology: EUHEDRAL
ALTERED,PERCENT IS FOR TOTAL OL PHENOS;
PLAGIOCLASE
Size(mm): 1-3
PLAGIOCLASE (10-20%)
Size(mm): .3-1
PERCENT IS FOR TOTAL PLAG PHENOS;
Groundmass - OLIVINE
Size(mm): .1-.3 Morphology: EUHEDRAL
OLIVINE ( 1-5%)
Size(mm): .03-.1 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL GROUNDMASS OL,ALTERED,DARK
GROUNDMASS(OXIDES?),FRESH OL RELICS;
PLAGIOCLASE
Size(mm): .1-.3 Morphology: SKELETAL,DENDRITIC
PLAGIOCLASE (20-40%)
Size(mm): .03-.1 Morphology: SKELETAL,DENDRITIC
PERCENT IS FOR TOTAL GROUNDMASS PLAG;
SPHERULITIC MESOSTASIS ( >40%)
TITANOMAGNETITE ( TR%)
Size(mm): .01-.03
Alteration - CLAY MINERALS
Location: GROUNDMASS Replacing: OL
ABUNDANT YELLOW CLAYS;
TALC
Replacing: OL
CARBONATE
Location: CRACKS
CRACKS WITH FIBROUS CARBONATE*
Leg : 69 Top/Bottom Interval(mm): 1160/1200 Describer: damson, A.C.
Hole: 504B Top of Core Depth(m) : 307.50 Rock Type: IGNEOUS
Core: 7 Sample Midpoint(m) : 311.68 Sect/Pc #: 3/PCE 488
ROCK = PLAG-OL MOD PHYRIC BASALT
RED OXIDIZED ZONE ALONG ONE SIDE OF SECTION;
Texture: MOD PHYRIC,SUBOPHITIC;
Where sampled: PILLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): 1-3 Morphology: EUHEDRAL,SUBHEDRAL
OLIVINE
Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL,SUBHEDRAL
PLAGIOCLASE ( 1-5%)
Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL
PERCENT IS FOR TOTAL PLAG PHENOS,ZONED AN TO AB-
RICH RIMS*
Groundmass - OLIVINE ( 5-10%)
Size(mm): .1-.3 Morphology: EUHEDRAL,SUBHEDRAL
PERCENT IS FOR TOTAL OL IN SECTION,ALTERED TO PALE
BROWN/GREEN CLAYS OR FEO IN OXIDIZED ZONE;
PLAGIOCLASE
Size(mm): .3-1 Morphology: SKELETAL,DENDRITIC
PLAGIOCLASE (10-20%)
Size(mm): .1-.3 Morphology: SKELETAL,DENDRITIC
MICROLITES,PERCENT IS FOR TOTAL PLAG MICROLITES,
DENDRITIC WITH CPX;
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL,SUBHEDRAL,DENDRITIC
PLAGIOCLASE ( 1-5%)
Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL,DENDRITIC
GLOMEROCRYSTS,PERCENT IS FOR TOTAL PLAG
GLOMEROCRYSTS,APPROX COMP AN68-78 FOR ALL PLAG,
3 MORPHOLOGIES BUT SAME COMPOSITION;
CLINOPYROXENE
Size(mm): .3-1 Morphology: GRANULAR,SKELETAL,DENDRITIC
CLINOPYROXENE
Size(mm): .1-.3 Morphology: GRANULAR,SKELETAL,DENDRITIC
CLINOPYROXENE (10-20%)
Size(mm): .03-.1 Morphology: GRANULAR,SKELETAL,DENDRITIC
GLOMEROCRYSTS AND GROUNDMASS CPX,PERCENT IS FOR
TOTAL CPX,CPX IN ONE CASE IS SUBOPHITIC TO PLAG,
SOME AS SUBHEDRAL XTLS IN GROUNDMASS,MOST AS
DENDRITIC AND SKELETAL XTLS;
SPHERULITIC MESOSTASIS ( >40%)
Morphology: DENDRITIC
INCLUDES PLAG+CPX;
TITANOMAGNETITE ( 1-5%)
CHROME SPINEL ( TR%)
Size(mm): .1-.3
Alteration - CLAY MINERALS
Replacing: OL
GREEN+BROWN;
FERROUS OXIDE
Replacing: OL,CPX
IN OXIDIZED ZONE,CPX REPLACEMENT UNCERTAIN*
CALCITE
Location: VEINS
Vesicles -
Percent: 0
Leg : 69 Top/Bottom Interval(mm): 630/ 650 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 307.50 Rock Type: IGNEOUS
Core: 7 Sample Midpoint(m) : 312.64 Sect/Pc #: 4/PCE 499
ROCK = PLAG-OL MOD PHYRIC BASALT;
Texture: MOD PHYRIC,MICROLITIC,SPHERULITIC
PARTLY SPHERULITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): 1-3 Morphology: EUHEDRAL,ANHEDRAL
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL
PLAGIOCLASE
Size(mm): .3-1 Morphology: EUHEDRAL
Groundmass - OLIVINE ( 5-10%)
Size(mm): .03-.1 Morphology: EUHEDRAL,ANHEDRAL
PERCENT IS FOR TOTAL OL IN SECTION,COMPLETELY
ALTERED;
PLAGIOCLASE (20-40%)
Size(mm): .1-.3 Morphology: EUHEDRAL,GLOMEROCRYSTS,
Morphology: MICROLITES
PERCENT IS FOR TOTAL PLAG IN SECTION;
CLINOPYROXENE ( 5-10%)
Size(mm): .03-.1
SPHERULITIC MESOSTASIS (10-20%)
TITANOMAGNETITE ( 1-5%)
Alteration - SMECTITE
Location: CRACKS Replacing: OL
OLIVE BROWN OR OLIVE GREEN*
Leg : 69 Top/Bottom Interval(mm): 670/ 700 Describer: Noack, Y.
Hole: 504B Top of Core Depth(m) : 307.50 Rock Type: IGNEOUS
Core: 7 Sample Midpoint(m) : 314.18 Sect/Pc #: 5/PCE 515
ROCK = PLAG-OL MOD PHYRIC BASALT;
Texture: MOD PHYRIC,DENDRITIC-OPHITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): 1-3 Morphology: EUHEDRAL
OLIVINE
Size(mm): .3-1 Morphology: EUHEDRAL
PLAGIOCLASE
Size(mm): 1-3
PLAGIOCLASE
Size(mm): .3-1
Groundmass - OLIVINE ( 1-5%)
Size(mm): .1-.3 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL OL IN SECTION,ALTERED TO
YELLOW-BROWN CLAYS AND TALC(?) WITH FRESH CORES;
GLASS
REPLACED BY YELLOW-BROWN CLAY(AS IN OL);
MESOSTASIS
INCLUDES PLAG + CPX + OL,OL IS FRESH*
Alteration - CARBONATE
Location: VEIN
VEIN WITH FIBROUS CARBONATE;
CLAY MINERALS
Location: VEINS+ Replacing: OL,GLASS
Location: VESICLES
YELLOW-BROWN*
Vesicles -
Size(mm): .1-.3
Filling: CLAYS
Size(mm): .03-.1
Percent: 1-5
Filling: CLAYS
PERCENT IS FOR TOTAL VESICLES*
Leg : 69 Top/Bottom Interval(mm): 240/ 260 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 316.50 Rock Type: IGNEOUS
Core: 8 Sample Midpoint(m) : 316.75 Sect/Pc #: 1/PCE 521
ROCK = PLAG-OL MOD PHYRIC BASALT;
Texture: MOD PHYRIC,VARIOLITIC;
Where sampled: PILLOW RIM*
Phenocrysts- OLIVINE ( 1-5%)
Size(mm): 1-3 Morphology: EUHEDRAL
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL
Groundmass - PLAGIOCLASE (10-20%)
Size(mm): .03-.1 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL PLAG IN SECTION;
SPHERULITIC MESOSTASIS ( >85%)
Morphology: RADIATED
CHROME SPINEL ( TR%)
Size(mm): .1-.3
Alteration - SMECTITE
Location: CRACKS Replacing: OL
OLIVE GREEN*
Leg : 69 Top/Bottom Interval(mm): 1070/1090 Describer: Noack, Y.
Hole: 504B Top of Core Depth(m) : 316.50 Rock Type: IGNEOUS
Core: 8 Sample Midpoint(m) : 317.58 Sect/Pc #: 1/PCE 525
ROCK = PLAG-OL MOD PHYRIC BASALT;
Texture: MOD PHYRIC,DENDRITIC-OPHITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): .3-1 Morphology: EUHEDRAL
PLAGIOCLASE
Size(mm): 1-3
PLAGIOCLASE
Size(mm): .3-1
Groundmass - OLIVINE
Size(mm): .1-.3 Morphology: EUHEDRAL
OLIVINE
Size(mm): .03-.1 Morphology: EUHEDRAL
FRESH;
PLAGIOCLASE
Size(mm): .1-.3
PLAGIOCLASE ( >40%)
Size(mm): .03-.1
PERCENT IS FOR TOTAL PLAG IN SECTION,APPROX COMP
AN55-68;
CLINOPYROXENE
Alteration - CLAY MINERALS
Location: VEINS+
Location: VESICLES
YELLOW-GREEN;
CLAY MINERALS
Location: VESICLES Replacing: GROUNDMASS
DARK BROWN*
Vesicles -
Size(mm): .1-.3
Percent: 1-5
Filling: CLAYS
VESICLES WITH 1)DARK BROWN FIBROUS CLAYS AND FE-
OXIDES,2)YELLOW GREEN GRANULAR CLAYS,DARK GREEN IN
CROSSED POLARS*
Leg : 69 Top/Bottom Interval(mm): 1240/1250 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 316.50 Rock Type: IGNEOUS
Core: 8 Sample Midpoint(m) : 319.25 Sect/Pc #: 2/PCE 533
ROCK = PLAG-OL-CPX PHYRIC BASALT;
Texture: PHYRIC,OPHITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): 1-3 Morphology: EUHEDRAL,ANHEDRAL
OLIVINE
Size(mm): .3-1 Morphology: EUHEDRAL,ANHEDRAL
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL,SUBHEDRAL
PLAGIOCLASE
Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL
CLINOPYROXENE
Size(mm): 1-3 Morphology: ANHEDRAL
CLINOPYROXENE
Size(mm): .3-1 Morphology: ANHEDRAL
Groundmass - OLIVINE ( 5-10%)
Size(mm): .1-.3 Morphology: EUHEDRAL,ANHEDRAL
PERCENT IS FOR TOTAL OL IN SECTION;
PLAGIOCLASE ( >40%)
Morphology: EUHEDRAL,SUBHEDRAL
PERCENT IS FOR TOTAL PLAG IN SECTION;
CLINOPYROXENE (20-40%)
Size(mm): .1-.3 Morphology: ANHEDRAL
PERCENT IS FOR TOTAL CPX IN SECTION;
TITANOMAGNETITE
Size(mm): .1-.3 Morphology: EUHEDRAL,SKELETAL
TITANOMAGNETITE ( 1-5%)
Size(mm): .03-.1 Morphology: EUHEDRAL,SKELETAL
PERCENT IS FOR TOTAL TITANO-MAGN*
Alteration - SMECTITE
Replacing: OL
OLIVE GREEN*
Leg : 69 Top/Bottom Interval(mm): 1340/1350 Describer: Noack, Y.
Hole: 504B Top of Core Depth(m) : 316.50 Rock Type: IGNEOUS
Core: 8 Sample Midpoint(m) : 319.35 Sect/Pc #: 2/PCE 534
ROCK = PLAG PHYRIC BASALT;
Texture: PHYRIC,OPHITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE
Size(mm): 1-3
PLAGIOCLASE
Size(mm): .3-1
Groundmass - PLAGIOCLASE (20-40%)
PERCENT IS FOR TOTAL PLAG IN SECTION,APPROX COMP
AN55-70;
OLIVINE
ALTERED,2 ZONES IN GROUNDMASS-YELLOW ZONE-LIGHT
BROWN CLAYS, FIBROUS OR GRANULAR,ORANGE-BROWN IN
CROSSED POLARS-RED ZONE-SAME AS YELLOW ZONE PLUS
RED-BROWN CLAY AND FE-OXIDES + OL WITH LIGHT
YELLOW FIBROUS GRAY CLAY, VESICLES FOLLOW THIS
SAME SCHEME*
Alteration - CLAY MINERALS
Location: VESICLES Replacing: OL
FERROUS OXIDE
Location: VESICLES Replacing: OL
Vesicles -
Filling: CLAYS,FE.OXIDES
Leg : 69 Top/Bottom Interval(mm): 1130/1160 Describer: Noack, Y.
Hole: 504B Top of Core Depth(m) : 316.50 Rock Type: IGNEOUS
Core: 8 Sample Midpoint(m) : 320.64 Sect/Pc #: 3/PCE 542
ROCK = PLAG-OL MOD PHYRIC BASALT;
Texture: MOD PHYRIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): 1-3
OLIVINE
Size(mm): .3-1
PLAGIOCLASE
Size(mm): 1-3
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*
Alteration - CLAY MINERALS
Location: VESICLES Replacing: OL
FERROUS OXIDE
Location: VESICLES Replacing: OL
DARK BROWN OXIDATION-SMALL ZONE WITH YELLOW-LIGHT
BROWN CLAY-RED ZONE WITH RED CLAYS AND FE-OXIDES*
Vesicles -
Filling: CLAYS,FE.OXIDES
Leg : 69 Top/Bottom Interval(mm): 1390/1430 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 316.50 Rock Type: IGNEOUS
Core: 8 Sample Midpoint(m) : 322.41 Sect/Pc #: 4/PCE 559
ROCK = PLAG-OL-CPX PHYRIC BASALT;
Texture: PHYRIC,OPHITIC*
Phenocrysts- OLIVINE
Size(mm): 1-3 Morphology: EUHEDRAL,ANHEDRAL
OLIVINE
Size(mm): .3-1 Morphology: EUHEDRAL,ANHEDRAL
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL,SUBHEDRAL
PLAGIOCLASE
Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL
CLINOPYROXENE
Size(mm): 1-3 Morphology: ANHEDRAL,RADIATED
CLINOPYROXENE
Size(mm): .3-1 Morphology: ANHEDRAL,RADIATED
Groundmass - OLIVINE ( 5-10%)
Size(mm): .1-.3 Morphology: EUHEDRAL,ANHEDRAL
PERCENT IS FOR TOTAL OL IN SECTION;
PLAGIOCLASE ( >40%)
Size(mm): .1-.3 Morphology: EUHEDRAL,SUBHEDRAL
PERCENT IS FOR TOTAL PLAG IN SECTION;
CLINOPYROXENE (20-40%)
Size(mm): .1-.3 Morphology: ANHEDRAL,RADIATED
PERCENT IS FOR TOTAL CPX IN SECTION;
TITANOMAGNETITE
Size(mm): .1-.3 Morphology: SKELETAL,EUHEDRAL
TITANOMAGNETITE ( 1-5%)
Size(mm): .03-.1 Morphology: SKELETAL,EUHEDRAL
PERCENT IS FOR TOTAL TITANO-MAGN*
Alteration - SMECTITE
Replacing: OL
OLIVE GREEN AND OLIVE BROWN*
Leg : 69 Top/Bottom Interval(mm): 460/ 500 Describer: Noack, Y.
Hole: 504B Top of Core Depth(m) : 325.50 Rock Type: IGNEOUS
Core: 9 Sample Midpoint(m) : 325.98 Sect/Pc #: 1/PCE 572
ROCK = PLAG-OL SPARSELY PHYRIC BASALT;
Texture: SPARSELY PHYRIC,DENDRITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): .3-1
PLAGIOCLASE
Size(mm): .3-1
SMALL AMOUNT OF PLAG PHENOS*
Groundmass - OLIVINE ( 1-5%)
Size(mm): .1-.3
PERCENT IS FOR TOTAL OL IN SECTION,ALTERED TO CLAY
AND TALC?,CALCITE IN OL;
PLAGIOCLASE
Size(mm): .1-.3
PLAGIOCLASE (20-40%)
Size(mm): .03-.1
PERCENT IS FOR TOTAL PLAG IN SECTION,APPROX COMP
AN55-70*
Alteration - CLAY MINERALS
Location: VESICLES Replacing: OL
YELLOW-GREEN;
CALCITE
Replacing: OL
FERROUS OXIDE
Location: VESICLES Replacing: OL
Vesicles -
Filling: CLAYS,FE.OXIDES
Leg : 69 Top/Bottom Interval(mm): 1200/1230 Describer: Noack, Y.
Hole: 504B Top of Core Depth(m) : 325.50 Rock Type: IGNEOUS
Core: 9 Sample Midpoint(m) : 326.72 Sect/Pc #: 1/PCE 581
ROCK = OL-PLAG MOD PHYRIC BASALT
FOUR ZONES-1)YELLOW BROWN ZONE-IN VESICLES,OL AND
GROUNDMASS,YELLOW BROWN,FIBROUS CLAYS-IN OL,CORE
WITH MORE GREY CLAYS,2)GREEN ZONE-OL AND VESICLES
FILLED WITH GREEN GRANULAR CLAYS,3)RED ZONE-YELLOW
LIGHT BROWN CLAYS,FIBROUS,YELLOW GRAY IN CROSSED
POLARS + FE-OXIDES,4)CRACK-ORANGE-RED RIM,LIGHT
YELLOW,FIBROUS,GRAY CORE IN CROSSED POLARS;
Texture: MOD PHYRIC,DENDRITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): 1-3 Morphology: EUHEDRAL
OLIVINE
Size(mm): .3-1 Morphology: EUHEDRAL
ALTERED;
PLAGIOCLASE
Size(mm): 1-3
PLAGIOCLASE
Size(mm): .3-1
SMALL AMOUNT OF PLAG PHENOS*
Groundmass - OLIVINE ( 1-5%)
Size(mm): .1-.3 Morphology: EUHEDRAL
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*
Alteration - FERROUS OXIDE
Replacing: OL,GROUNDMASS
CLAY MINERALS
Location: VESICLES Replacing: OL
GREEN;
CLAY MINERALS
Replacing: OL
YELLOW-BROWN*
Vesicles -
Size(mm): .1-.3
Percent: 1-5
Filling: CLAYS
Leg : 69 Top/Bottom Interval(mm): 430/ 470 Describer: Noack, Y.
Hole: 504B Top of Core Depth(m) : 325.50 Rock Type: IGNEOUS
Core: 9 Sample Midpoint(m) : 327.45 Sect/Pc #: 2/PCE 591
ROCK = PLAG-OL MOD PHYRIC BASALT
FRESH PILLOW MARGIN;
Texture: MOD PHYRIC,VARIOLITIC,SPHERULITIC;
Where sampled: PILLOW RIM*
Phenocrysts- OLIVINE
Size(mm): .3-1 Morphology: EUHEDRAL
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;
PLAGIOCLASE
Size(mm): .1-.3 Morphology: SKELETAL,DENDRITIC
PLAGIOCLASE (10-20%)
Size(mm): .03-.1 Morphology: SKELETAL,DENDRITIC
PERCENT IS FOR TOTAL PLAG IN SECTION,APPROX COMP
AN52-65;
GLASS
XTLLIZED GLASS IN SPHERULITIC ZONE*
Alteration - CLAY MINERALS
Location: VESICLES Replacing: OL
CRACKS WITH LIGHT GREEN FIBROUS GRAY MINERALS*
Vesicles -
Size(mm): .03-.1
Percent: TR
Filling: CLAYS
Shape: ROUND
GREEN + YELLOW
RARE*
Leg : 69 Top/Bottom Interval(mm): 790/ 830 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 334.50 Rock Type: IGNEOUS
Core: 10 Sample Midpoint(m) : 335.31 Sect/Pc #: 1/PCE 615
ROCK = BASALTIC BRECCIA;
Texture: VARIOLITIC,MICROPHYRIC*
Groundmass - OLIVINE ( 1-5%)
Size(mm): .3-1 Morphology: EUHEDRAL
PLAGIOCLASE
Size(mm): .3-1 Morphology: EUHEDRAL
PLAGIOCLASE
Size(mm): .1-.3 Morphology: EUHEDRAL
PLAGIOCLASE ( 5-10%)
Size(mm): .03-.1 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL PLAG;
SPHERULITIC MESOSTASIS ( >85%)
Alteration - SMECTITE
Location: CRACKS Replacing: OL,GROUNDMASS
SMALL BASALT FRAGMENTS ARE STRONGLY ALTERED TO
SMECTITE,SMECTITE FORMS VEIN CEMENT WITH RADIATED
AGGREGATES IN THE VEINS,MN.OXIDES SEEM TO BE
PRESENT IN SMECTITE,THERE ARE SMALL PATCHES WHICH
LOOK LIKE IRREGULAR HOLES FILLED WITH GREEN AND
ORANGE SMECTITE,SMECTITE IN CEMENT IS LIGHT GREEN*
Leg : 69 Top/Bottom Interval(mm): 950/1000 Describer: Noack, Y.
Hole: 504B Top of Core Depth(m) : 334.50 Rock Type: IGNEOUS
Core: 10 Sample Midpoint(m) : 336.98 Sect/Pc #: 2/PCE 636
ROCK = PLAG-OL MOD PHYRIC BASALT
THIN SECTION TOO THICK;
Texture: MOD PHYRIC,VARIOLITIC,SPHERULITIC;
Where sampled: PILLOW RIM*
Phenocrysts- OLIVINE ( 1-5%)
Size(mm): .3-1 Morphology: EUHEDRAL
PLAGIOCLASE
Size(mm): .3-1
Groundmass - PLAGIOCLASE
Size(mm): .1-.3
PLAGIOCLASE (10-20%)
Size(mm): .03-.1
PERCENT IS FOR TOTAL PLAG IN SECTION*
Alteration - CLAY MINERALS
Replacing: OL
YELLOW-BROWN,ALTERED GLASSY MARGIN TO LIGHT BROWN
GRANULAR YELLOW GRAY PRODUCT,ALONG CRACK IN FRESH
GLASS ZONE-ZONATION,BUT CONTACT WITH GLASS NOT
CLEAR;
PHILLIPSITE
Location: CRACK
IN ALTERED GLASSY ZONE*
Vesicles -
Percent: 0
Leg : 69 Top/Bottom Interval(mm): 950/1000 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 334.50 Rock Type: IGNEOUS
Core: 10 Sample Midpoint(m) : 336.98 Sect/Pc #: 2/PCE 636
ROCK = PLAG-OL MOD PHYRIC BASALT;
Texture: MOD PHYRIC,GLASSY,VARIOLITIC;
Where sampled: PILLOW RIM*
Phenocrysts- OLIVINE ( .5-1%)
Size(mm): .3-1 Morphology: EUHEDRAL
PLAGIOCLASE
Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL
Groundmass - PLAGIOCLASE ( 5-10%)
Size(mm): .1-.3 Morphology: EUHEDRAL,SUBHEDRAL
PERCENT IS FOR TOTAL PLAG IN SECTION;
GLASS ( >90%)
Alteration - SMECTITE ( .5-1%)
Replacing: OL
Leg : 69 Top/Bottom Interval(mm): 880/ 920 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 334.50 Rock Type: IGNEOUS
Core: 10 Sample Midpoint(m) : 338.40 Sect/Pc #: 3/PCE 655
ROCK = BASALTIC BRECCIA
FRAGMENTS OF A GLASSY MARGIN ARE STRONGLY ALTERED
TO SMECTITE,SPARSE PLAG PHENOS ARE FRESH,CEMENT
FORMS VEIN-LIKE AGGREGATES WITH SPHERULITES OF
SMECTITE,CALCITE AND CHALCEDONY;
Texture: BRECCIA;
Where sampled: PILLOW RIM*
Leg : 69 Top/Bottom Interval(mm): 160/ 210 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 343.50 Rock Type: IGNEOUS
Core: 11 Sample Midpoint(m) : 343.69 Sect/Pc #: 1/PCE 663
ROCK = PLAG-OL MOD PHYRIC BASALT
GROUNDMASS BADLY ALTERED;
Texture: MOD PHYRIC,VARIOLITIC;
Where sampled: PILLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): 1-3 Morphology: EUHEDRAL
OLIVINE ( 1-5%)
Size(mm): .3-1 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL OL,OL PSEUDOMORPHS CONTAIN
OLIVE GREEN SMECTITE,LOCALLY BRIGHT GREEN
CELADONITE;
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL
PLAGIOCLASE
Size(mm): .3-1 Morphology: EUHEDRAL
Groundmass - PLAGIOCLASE ( 5-10%)
Size(mm): .1-.3 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL PLAG IN SECTION;
SPHERULITIC MESOSTASIS ( >90%)
TITANOMAGNETITE
Size(mm): .03-.1
TITANOMAGNETITE ( 1-5%)
Size(mm): .01-.03
PERCENT IS FOR TOTAL TITANO-MAGN*
Alteration - SMECTITE (20-40%)
Location: GROUNDMASS Replacing: OL
Leg : 69 Top/Bottom Interval(mm): 900/ 950 Describer: Noack, Y.
Hole: 504B Top of Core Depth(m) : 343.50 Rock Type: IGNEOUS
Core: 11 Sample Midpoint(m) : 345.93 Sect/Pc #: 2/PCE 682
ROCK = PLAG-OL SPARSELY PHYRIC BASALT
TWO ZONES-1)GREEN ZONE-VESICLES AND GROUNDMASS
WITH GREEN CLAYS,2)RED ZONE-VESICLES WITH ORANGE-
RED CLAYS(YELLOW-ORANGE IN CROSSED POLARS) AND FE-
OXIDES;
Texture: SPARSELY PHYRIC,DENDRITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): .3-1 Morphology: EUHEDRAL
ALTERED;
PLAGIOCLASE
Size(mm): .3-1
Groundmass - OLIVINE
Size(mm): .1-.3 Morphology: EUHEDRAL
OLIVINE ( 1-5%)
Size(mm): .03-.1 Morphology: EUHEDRAL
FRESH,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
AN52-65*
Alteration - CLAY MINERALS
Location: VESICLES
RED AND GREEN;
SMECTITE
Replacing: OL
LIGHT BROWN;
FERROUS OXIDE
Vesicles -
Size(mm): .1-.3
Filling: CLAYS
Size(mm): .03-.1
Percent: .5-1
Filling: CLAYS
PERCENT IS FOR TOTAL VESICLES*
Leg : 69 Top/Bottom Interval(mm): 670/ 730 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 343.50 Rock Type: IGNEOUS
Core: 11 Sample Midpoint(m) : 347.20 Sect/Pc #: 3/PCE 701
ROCK = PLAG-OL-CPX PHYRIC BASALT;
Texture: PHYRIC,VARIOLITIC;
Where sampled: PILLOW RIM*
Phenocrysts- OLIVINE
Size(mm): 1-3 Morphology: EUHEDRAL
OLIVINE ( 1-5%)
Size(mm): .3-1 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL OL;
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL
PLAGIOCLASE
Size(mm): .3-1 Morphology: EUHEDRAL
CLINOPYROXENE ( .5-1%)
Size(mm): .3-1 Morphology: SUBHEDRAL,ANHEDRAL
Groundmass - PLAGIOCLASE (10-20%)
Size(mm): .03-.1 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL PLAG IN SECTION;
SPHERULITIC MESOSTASIS ( >80%)
Alteration - SMECTITE (20-40%)
Location: CRACKS Replacing: GROUNDMASS
CELADONITE
Replacing: OL
FERROUS OXIDE
Replacing: OL
OTHER
THERE ARE SMALL(<1MM)SPOTS OF FINE-GRAINED XTLLINE
MATERIAL WHICH LOOK LIKE XENOLITHS,THEY ARE THE
CENTERS OF MICROLITE XTLLIZATION*
Leg : 69 Top/Bottom Interval(mm): 1230/1270 Describer: Noack, Y.
Hole: 504B Top of Core Depth(m) : 352.50 Rock Type: IGNEOUS
Core: 12 Sample Midpoint(m) : 355.25 Sect/Pc #: 2/PCE 745
ROCK = PLAG-OL SPARSELY PHYRIC BASALT
ZONATION AS IN 9-1 PCE 581;
Texture: SPARSELY PHYRIC,MICROLITIC*
Phenocrysts- OLIVINE
Size(mm): .3-1 Morphology: EUHEDRAL
PLAGIOCLASE
Size(mm): .3-1 Morphology: DENDRITIC
Groundmass - OLIVINE ( .5-1%)
Size(mm): .1-.3 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL OL IN SECTION;
PLAGIOCLASE
Size(mm): .1-.3 Morphology: DENDRITIC
PLAGIOCLASE
Size(mm): .03-.1 Morphology: DENDRITIC
APPROX COMP AN53-65;
CLINOPYROXENE
Alteration - CLAY MINERALS
Location: VESICLES Replacing: OL
YELLOW,GREEN,RED;
FERROUS OXIDE
Location: VESICLES
Vesicles -
Size(mm): .03-.1
Percent: .5-1
Filling: CLAYS,FE.OXIDES
Leg : 69 Top/Bottom Interval(mm): 1430/1500 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 361.50 Rock Type: IGNEOUS
Core: 13 Sample Midpoint(m) : 362.97 Sect/Pc #: 1/PCE 765
ROCK = PLAG-OL-CPX MOD PHYRIC BASALT;
Texture: MOD PHYRIC,MICROLITIC,SUBOPHITIC;
Where sampled: PILLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): 1-3 Morphology: EUHEDRAL,ANHEDRAL
OLIVINE
Size(mm): .3-1 Morphology: EUHEDRAL,ANHEDRAL
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL,SUBHEDRAL
PLAGIOCLASE
Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL
CLINOPYROXENE
Size(mm): 1-3 Morphology: SUBHEDRAL,ANHEDRAL,RADIAL
CLINOPYROXENE
Size(mm): .3-1 Morphology: SUBHEDRAL,ANHEDRAL,RADIAL
Groundmass - OLIVINE ( 5-10%)
Size(mm): .1-.3 Morphology: EUHEDRAL,ANHEDRAL
PERCENT IS FOR TOTAL OL IN SECTION;
PLAGIOCLASE (20-40%)
Size(mm): .1-.3 Morphology: EUHEDRAL,SUBHEDRAL
PERCENT IS FOR TOTAL PLAG IN SECTION;
CLINOPYROXENE
Size(mm): .1-.3 Morphology: SUBHEDRAL,ANHEDRAL,RADIAL
TITANOMAGNETITE
Size(mm): .1-.3 Morphology: SKELETAL
TITANOMAGNETITE ( 1-5%)
Size(mm): .03-.1 Morphology: SKELETAL
PERCENT IS FOR TOTAL TITAN.MT*
Alteration - SMECTITE ( 1-5%)
Replacing: OL
LIGHT YELLOW AND DARK OLIVE BROWN;
CELADONITE ( 1-5%)
Replacing: OL
BRIGHT GREEN;
PYRITE ( TR%)
Replacing: OL
Leg : 69 Top/Bottom Interval(mm): 1170/1190 Describer: Noack, Y.
Hole: 504B Top of Core Depth(m) : 361.50 Rock Type: IGNEOUS
Core: 13 Sample Midpoint(m) : 364.18 Sect/Pc #: 2/PCE 784
ROCK = PLAG-OL SPARSELY PHYRIC BASALT;
Texture: SPARSELY PHYRIC,DENDRITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): .3-1 Morphology: EUHEDRAL
ALTERED;
PLAGIOCLASE
Size(mm): .3-1 Morphology: DENDRITIC
SMALL AMOUNT OF PLAG PHENOS*
Groundmass - OLIVINE ( .5-1%)
Size(mm): .1-.3 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL OL IN SECTION;
PLAGIOCLASE
Size(mm): .1-.3 Morphology: DENDRITIC
PLAGIOCLASE (20-40%)
Size(mm): .03-.1 Morphology: DENDRITIC
PERCENT IS FOR TOTAL PLAG IN SECTION,APPROX COMP
AN55-65;
CLINOPYROXENE
Alteration - CLAYS
Location: VESICLES Replacing: OL
GREEN*
Vesicles -
Size(mm): .1-.3
Filling: CLAYS
Size(mm): .03-.1
Percent: 1-5
Filling: CLAYS
PERCENT IS FOR TOTAL VESICLES*
Leg : 69 Top/Bottom Interval(mm): 730/ 750 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 361.50 Rock Type: IGNEOUS
Core: 13 Sample Midpoint(m) : 365.24 Sect/Pc #: 3/PCE 792
ROCK = PLAG-OL-CPX MOD PHYRIC BASALT;
Texture: MOD PHYRIC,VARIOLITIC;
Where sampled: PILLOW RIM*
Phenocrysts- OLIVINE
Size(mm): .3-1 Morphology: EUHEDRAL
PLAGIOCLASE
Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL
CLINOPYROXENE
Size(mm): .3-1 Morphology: SUBHEDRAL,ANHEDRAL
Groundmass - OLIVINE ( 1-5%)
Size(mm): .1-.3 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL OL IN SECTION;
PLAGIOCLASE ( 5-10%)
Size(mm): .1-.3 Morphology: EUHEDRAL,SUBHEDRAL
PERCENT IS FOR TOTAL PLAG IN SECTION;
CLINOPYROXENE ( 1-5%)
Size(mm): .1-.3 Morphology: SUBHEDRAL,ANHEDRAL
PERCENT IS FOR TOTAL CPX IN SECTION;
SPHERULITIC MESOSTASIS ( >85%)
TITANOMAGNETITE ( 1-5%)
Size(mm): .03-.1 Morphology: SKELETAL
Alteration - SMECTITE
Replacing: OL,GROUNDMASS
Leg : 69 Top/Bottom Interval(mm): 70/ 100 Describer: Noack, Y.
Hole: 504B Top of Core Depth(m) : 361.50 Rock Type: IGNEOUS
Core: 13 Sample Midpoint(m) : 366.09 Sect/Pc #: 4/PCE 802
ROCK = PLAG-OL SPARSELY PHYRIC BASALT;
Texture: SPARSELY PHYRIC,DENDRITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): .3-1 Morphology: EUHEDRAL
PLAGIOCLASE
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
PLAGIOCLASE (20-40%)
Size(mm): .03-.1
PERCENT IS FOR TOTAL PLAG IN SECTION,APPROX COMP
AN55-70;
CLINOPYROXENE
GROUNDMASS WITH PLAG,OL,CPX MICROLITES*
Alteration - CLAY MINERALS
Location: VESICLES Replacing: OL
IN THE YELLOW ZONE-YELLOW CLAY,GRANULAR,YELLOW-
GREEN IN CROSSED NICOLS;
FERROUS OXIDE
CRACK-RED RIM(FE-OXIDE),YELLOW,FIBROUS,YELLOW-GRAY
CORE*
Vesicles -
Size(mm): .3-1
Filling: CLAYS
Size(mm): .1-.3
Percent: 1-5
Filling: CLAYS
PERCENT IS FOR TOTAL VESICLES*
Leg : 69 Top/Bottom Interval(mm): 310/ 350 Describer: damson, A.C.
Hole: 504B Top of Core Depth(m) : 370.50 Rock Type: IGNEOUS
Core: 14 Sample Midpoint(m) : 370.83 Sect/Pc #: 1/PCE 840
ROCK = PLAG-OL PHYRIC BASALT;
Texture: PHYRIC,MICROLITIC,SPHERULITIC
MICROLITES IN FAN/PLUMOSE SPHERULITIC MATRIX;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): 1-3 Morphology: EUHEDRAL,SUBHEDRAL
OLIVINE
Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL
PLAGIOCLASE
Size(mm): 3-10 Morphology: EUHEDRAL,DENDRITIC,SUBHEDRAL
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL,DENDRITIC,SUBHEDRAL
GLOMEROCRYSTS,PLAG PHENOS HAVE ABUNDANT GLASS
INCLUSIONS ALTERED TO CLAYS;
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL,SUBHEDRAL,DENDRITIC
PLAGIOCLASE ( 10%)
Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL,DENDRITIC
PHENOS,PERCENT IS FOR TOTAL PLAG PHENOS AND
GLOMEROCRYSTS*
Groundmass - OLIVINE ( 1-5%)
Size(mm): .1-.3 Morphology: EUHEDRAL,SUBHEDRAL
PERCENT IS FOR TOTAL OL IN SECTION;
PLAGIOCLASE
Size(mm): .1-.3 Morphology: SKELETAL,DENDRITIC
PLAGIOCLASE ( 20%)
Size(mm): .03-.1 Morphology: SKELETAL,DENDRITIC
MICROLITES,PERCENT IS FOR TOTAL PLAG MICROLITES,
APPROX COMP AN74,OSCILLATIONS IN ZONING IN LARGER
XTLS-SHARP,THIN AB-RICH RIMS,GROUNDMASS RICH IN
PLAG MICROLITES IN A FAN/PLUMOSE MATRIX;
CLINOPYROXENE
NO SEPARATE GRAINS OF CPX,ONLY AS SPHERULITE XTLS;
CHROME SPINEL ( 0%)
SPHERULITIC MESOSTASIS ( >40%)
CPX AND PLAG FAN-SPHERULITES+PLUMOSE;
TITANOMAGNETITE ( 1-5%)
Alteration - CLAY MINERALS
Location: VESICLES Replacing: OL,PLAG
BROWN;
FERROUS OXIDE
Replacing: OL
Vesicles -
Percent: TR
Filling: CLAYS
Shape: ROUND
Leg : 69 Top/Bottom Interval(mm): 320/ 340 Describer: Noack, Y.
Hole: 504B Top of Core Depth(m) : 370.50 Rock Type: IGNEOUS
Core: 14 Sample Midpoint(m) : 372.33 Sect/Pc #: 2/PCE 862
ROCK = PLAG-OL-CPX SPARSELY PHYRIC BASALT
HAS RED+GREEN+YELLOW ZONES OF ALTERATION
PARALLELING A CRACK AT ONE END OF THE SECTION;
Texture: SPARSELY PHYRIC,DENDRITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): .3-1
PLAGIOCLASE
Size(mm): .3-1
CLINOPYROXENE ( .5-1%)
Size(mm): 1-3
Groundmass - OLIVINE ( 1-5%)
Size(mm): .1-.3
PERCENT IS FOR TOTAL OL IN SECTION,ALTERED,
BOUNDARY ACROSS AN OL;
PLAGIOCLASE
Size(mm): .1-.3
PLAGIOCLASE (20-40%)
Size(mm): .03-.1
PERCENT IS FOR TOTAL PLAG IN SECTION,APPROX COMP
AN55-65,SOME ZONATION AS IN 14-1-31-35;
CLINOPYROXENE
Alteration - CLAY MINERALS
Location: VESICLES Replacing: OL
YELLOW,GREEN,RED*
Vesicles -
Size(mm): .3-1
Size(mm): .1-.3
Percent: 1-5
Filling: CLAYS
Leg : 69 Top/Bottom Interval(mm): 700/ 720 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 375.00 Rock Type: IGNEOUS
Core: 15 Sample Midpoint(m) : 375.71 Sect/Pc #: 1/PCE 878
ROCK = PLAG-OL-CPX MOD PHYRIC BASALT;
Texture: MOD PHYRIC,GLASSY,VARIOLITIC;
Where sampled: PILLOW RIM*
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: EUHEDRAL,SUBHEDRAL
PLAGIOCLASE
Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL
CLINOPYROXENE ( 1-5%)
Size(mm): 1-3 Morphology: SUBHEDRAL,ANHEDRAL
Groundmass - PLAGIOCLASE
Size(mm): .1-.3 Morphology: EUHEDRAL,SUBHEDRAL
PLAGIOCLASE ( 5-10%)
Size(mm): .03-.1 Morphology: EUHEDRAL,SUBHEDRAL
PERCENT IS FOR TOTAL PLAG IN SECTION;
GLASS ( >85%)
Alteration - SMECTITE
Location: CRACKS Replacing: OL,GLASS
Leg : 69 Top/Bottom Interval(mm): 90/ 210 Describer: Noack, Y.
Hole: 504B Top of Core Depth(m) : 375.00 Rock Type: IGNEOUS
Core: 15 Sample Midpoint(m) : 376.65 Sect/Pc #: 2/PCE 891
ROCK = PLAG MOD MICROPHYRIC BASALT;
HAS RED+GREEN+YELLOW ZONES OF ALTERATION;
Texture: MOD MICROPHYRIC,FAN SHEAF SPHERULITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE
Size(mm): .3-1 Morphology: DENDRITIC,SKELETAL,EUHEDRAL
Groundmass - OLIVINE
Size(mm): .1-.3 Morphology: EUHEDRAL
OLIVINE ( 1-5%)
Size(mm): .03-.1 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL OL,ALTERED TO CLAYS;
PLAGIOCLASE
Size(mm): .1-.3 Morphology: DENDRITIC,SKELETAL,EUHEDRAL
PLAGIOCLASE (10-20%)
Size(mm): .03-.1 Morphology: DENDRITIC,SKELETAL,EUHEDRAL
PERCENT IS FOR TOTAL PLAG IN SECTION,APPROX COMP
AN55-68,AGGLOMERATES PLAG-CPX;
CLINOPYROXENE
Size(mm): .1-.3
CLINOPYROXENE ( 1-5%)
Size(mm): .03-.1
Alteration - CLAY MINERALS
Location: VESICLES Replacing: OL
Vesicles -
Size(mm): .1-.3
Filling: CLAYS
Size(mm): .03-.1
Percent: 1-5
Filling: CLAYS
PERCENT IS FOR TOTAL VESICLES*
Leg : 69 Top/Bottom Interval(mm): 840/ 860 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 375.00 Rock Type: IGNEOUS
Core: 15 Sample Midpoint(m) : 378.85 Sect/Pc #: 3/PCE 914
ROCK = PLAG-OL MOD PHYRIC BASALT;
Texture: MOD PHYRIC,GLASSY,VARIOLITIC;
Where sampled: PILLOW RIM*
Phenocrysts- OLIVINE ( 1-5%)
Size(mm): .3-1 Morphology: EUHEDRAL
PLAGIOCLASE
Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL
Groundmass - PLAGIOCLASE
Size(mm): .1-.3 Morphology: EUHEDRAL,SUBHEDRAL
PLAGIOCLASE ( 5-10%)
Size(mm): .03-.1 Morphology: EUHEDRAL,SUBHEDRAL
PERCENT IS FOR TOTAL PLAG IN SECTION;
CLINOPYROXENE
Size(mm): .1-.3 Morphology: SUBHEDRAL,ANHEDRAL
CLINOPYROXENE ( 1-5%)
Size(mm): .03-.1 Morphology: SUBHEDRAL,ANHEDRAL
GLASS ( >85%)
Alteration - SMECTITE
Location: CRACKS Replacing: OL,GLASS
Leg : 69 Top/Bottom Interval(mm): 60/ 80 Describer: damson, A.C.
Hole: 504B Top of Core Depth(m) : 375.00 Rock Type: IGNEOUS
Core: 15 Sample Midpoint(m) : 379.57 Sect/Pc #: 4/PCE 925
ROCK = PLAG-OL MOD PHYRIC BASALT;
Texture: MOD PHYRIC,OPHITIC,VARIOLITIC
MATRIX IS COMPOSED OF GRANULAR CPX PARTIALLY OR
COMPLETELY OPHITIC WITH ACICULAR PLAG,REMAINING
MATRIX IS DENDRITIC SPHERULITIC CPX CONNECTED TO
THE GRANULAR CPX BY ARBORESCENT SPRAYS,THOUGH SOME
GRAINS(SUBHEDRAL)ARE DISTINCT,IN THESE AREAS ARE
IRREGULAR PATCHES OF FAN-SPHERULITES(NO GRANULAR
CPX AND FEW MICROLITES)HEAVILY DUSTED WITH OPAQUES
(ABOUT 1/3 OF MATRIX THIS DENSE SPHERULITIC);
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): 1-3 Morphology: SUBHEDRAL,EUHEDRAL
OLIVINE
Size(mm): .3-1 Morphology: SUBHEDRAL,EUHEDRAL
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL,SUBHEDRAL
PLAGIOCLASE
Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL
PHENOS;
PLAGIOCLASE
Size(mm): 3-10 Morphology: SUBHEDRAL,EUHEDRAL,POIKILITIC
PLAGIOCLASE ( 5-10%)
Size(mm): 1-3 Morphology: SUBHEDRAL,EUHEDRAL,POIKILITIC
GLOMEROCRYSTS,PERCENT IS FOR TOTAL PLAG PHENOS AND
GLOMEROCRYSTS,OSCILLATIONS IN ZONING,PRONOUNCED
SHARP RIM IN PHENOS-LESS IN GLOMEROCRYSTS,CORES OF
SOME PHENOS CONTAIN AMOEBOID AREAS OF CLAY AND
GLASS,SOME POIKILITIC CONTAINING ANHEDRAL PLAG
GRAINS*
Groundmass - OLIVINE ( 1-5%)
Size(mm): .1-.3 Morphology: SUBHEDRAL,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
MICROLITES,PERCENT IS FOR TOTAL PLAG MICROLITES,
APPROX COMP AN73;
CLINOPYROXENE
Size(mm): .03-.1 Morphology: GRANULAR,SUBOPHITIC
CLINOPYROXENE (20-40%)
Size(mm): .01-.03 Morphology: GRANULAR,SUBOPHITIC
PERCENT IS FOR TOTAL CPX;
SPHERULITIC MESOSTASIS (20-40%)
COMPOSED OF CPX AND PLAG;
TITANOMAGNETITE ( 1-5%)
Alteration - FERROUS OXIDE
Replacing: OL
CLAY MINERALS
Location: VESICLES Replacing: OL
BROWN AND GREEN*
Vesicles -
Percent: TR
Filling: CLAYS
Shape: IRREGULAR
Leg : 69 Top/Bottom Interval(mm): 30/ 60 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 384.00 Rock Type: IGNEOUS
Core: 16 Sample Midpoint(m) : 384.05 Sect/Pc #: 1/PCE 956
ROCK = PLAG-OL-CPX MOD PHYRIC BASALT
THERE ARE THIN INJECTIONS(?)OF FINE-GRAINED BUT
HOLOXTLLINE MATERIAL;
Texture: MOD PHYRIC,GLASSY OR VARIOLITIC;
Where sampled: PILLOW RIM*
Phenocrysts- OLIVINE ( 1-5%)
Size(mm): .3-1 Morphology: EUHEDRAL
PLAGIOCLASE
Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL
CLINOPYROXENE ( 1-5%)
Size(mm): .3-1 Morphology: SUBHEDRAL,ANHEDRAL
Groundmass - PLAGIOCLASE
Size(mm): .1-.3 Morphology: EUHEDRAL,SUBHEDRAL
PLAGIOCLASE ( 5-10%)
Size(mm): .03-.1 Morphology: EUHEDRAL,SUBHEDRAL
PERCENT IS FOR TOTAL PLAG IN SECTION;
GLASS ( >85%)
Alteration - SMECTITE ( 1-5%)
Location: CRACKS Replacing: OL
FERROUS HYDROX MINS ( TR%)
Location: CRACKS
Leg : 69 Top/Bottom Interval(mm): 810/ 830 Describer: damson, A.C.
Hole: 504B Top of Core Depth(m) : 384.00 Rock Type: IGNEOUS
Core: 16 Sample Midpoint(m) : 384.82 Sect/Pc #: 1/PCE 965
ROCK = PLAG-CPX-OL PHYRIC BASALT
SLIDE SHOWS AUTO-INTRUSION,HOST IS STRONGLY IRON
STAINED BUT A COARSER FORM OF THE INJECTED
MATERIAL,CONTACTS SHARP BUT ROUNDED-INJECTION
WHILE PLASTIC;
Texture: PHYRIC,MICROXTLLINE
NO SEPARATE SPHERULITE FANS VISIBLE-CHILLED
CONTACT TYPE TEXTURE*
Phenocrysts- OLIVINE
Size(mm): .3-1
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL,SUBHEDRAL,POIKILITIC
PLAGIOCLASE
Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL,POIKILITIC
PHENOS,CAN HAVE LARGE SIMPLE TWINNED PHENOS
POIKILITICALLY ENCLOSING 35 SMALLER EUHEDRAL AND
SUBHEDRAL PLAG GRAINS;
PLAGIOCLASE
Size(mm): 3-10 Morphology: EUHEDRAL,SUBHEDRAL
PLAGIOCLASE ( 5-10%)
Size(mm): 1-3 Morphology: EUHEDRAL,SUBHEDRAL
GLOMEROCRYSTS,PERCENT IS FOR TOTAL PLAG PHENOS AND
GLOMEROCRYSTS;
CLINOPYROXENE
Size(mm): 1-3 Morphology: EUHEDRAL,SUBHEDRAL,GRANULAR
1 OR 2 GRAINS;
CLINOPYROXENE
Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL,GRANULAR
LARGE CPX PHENOS,ALSO SINGLE SMALL GRAINS AND
CLUMPS WHICH ARE OPHITIC*
Groundmass - OLIVINE
Size(mm): .1-.3
OLIVINE ( 1-5%)
Size(mm): .03-.1
OL REPLACEMENT OFTEN LAYERED BUT CAN BE ONE OR THE
OTHER-GENERALLY FE-OXIDES;
PLAGIOCLASE
Size(mm): .1-.3 Morphology: EUHEDRAL
PLAGIOCLASE ( 5-10%)
Size(mm): .03-.1 Morphology: EUHEDRAL
MICROLITES,PERCENT IS FOR TOTAL PLAG MICROLITES,
APPROX COMP AN82;
CLINOPYROXENE
Size(mm): .1-.3 Morphology: EUHEDRAL,SUBHEDRAL,GRANULAR
CLINOPYROXENE ( 5-10%)
Size(mm): .03-.1 Morphology: EUHEDRAL,SUBHEDRAL,GRANULAR
PERCENT IS FOR TOTAL CPX IN SECTION;
SPHERULITIC MESOSTASIS ( >40%)
TITANOMAGNETITE ( 1-5%)
Alteration - FERROUS OXIDE
Replacing: OL
CLAY MINERALS
Replacing: OL
GREEN/BROWN,PIECE 965 HAS AN OUTER OXIDIZED ZONE
WITH FE.HYDRX AND INNER ZONE WITH BROWN SMECTITES*
Vesicles -
Percent: 0
Leg : 69 Top/Bottom Interval(mm): 120/ 140 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 384.00 Rock Type: IGNEOUS
Core: 16 Sample Midpoint(m) : 385.63 Sect/Pc #: 2/PCE 975
ROCK = PLAG SPARSELY PHYRIC BASALT
THERE IS THIN INJECTION OF A LITTLE MORE COARSE
GRAINED BASALT OF SIMILAR COMPOSITION BUT APHYRIC
WITH OPHITIC TEXTURE;
Texture: SPARSELY PHYRIC,SUBOPHITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE
Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL
Groundmass - OLIVINE
Size(mm): .1-.3 Morphology: EUHEDRAL,ANHEDRAL
OLIVINE
Size(mm): .03-.1 Morphology: EUHEDRAL,ANHEDRAL
OLIVINE ( 1-5%)
Size(mm): .01-.03 Morphology: EUHEDRAL,ANHEDRAL
PERCENT IS FOR TOTAL OL;
PLAGIOCLASE
Size(mm): .1-.3 Morphology: EUHEDRAL,SUBHEDRAL
PLAGIOCLASE
Size(mm): .03-.1 Morphology: EUHEDRAL,SUBHEDRAL
PLAGIOCLASE (20-40%)
Size(mm): .01-.03 Morphology: EUHEDRAL,SUBHEDRAL
PERCENT IS FOR TOTAL PLAG IN SECTION;
CLINOPYROXENE
Size(mm): .1-.3 Morphology: ANHEDRAL
CLINOPYROXENE
Size(mm): .03-.1 Morphology: ANHEDRAL
CLINOPYROXENE (20-40%)
Size(mm): .01-.03 Morphology: ANHEDRAL
PERCENT IS FOR TOTAL CPX IN SECTION;
TITANOMAGNETITE
Size(mm): .03-.1 Morphology: SKELETAL
TITANOMAGNETITE ( 1-5%)
Size(mm): .01-.03 Morphology: SKELETAL
PERCENT IS FOR TITANO-MAGN*
Alteration - SMECTITE ( 1-5%)
Replacing: OL
Leg : 69 Top/Bottom Interval(mm): 970/1000 Describer: Noack, Y.
Hole: 504B Top of Core Depth(m) : 384.00 Rock Type: IGNEOUS
Core: 16 Sample Midpoint(m) : 386.49 Sect/Pc #: 2/PCE 982
ROCK = PLAG-OL MOD PHYRIC BASALT;
Texture: MOD PHYRIC,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,VERY DARK PRODUCT
REPLACING OL(AND GROUNDMASS);
PLAGIOCLASE
Size(mm): 1-3
PLAGIOCLASE
Size(mm): .3-1
Groundmass - PLAGIOCLASE (20-40%)
Size(mm): .1-.3
PERCENT IS FOR TOTAL PLAG IN SECTION,APPROX COMP
AN58-70*
Alteration - CLAY MINERALS
Location: VESICLES Replacing: OL
GREEN,SMALL ZONE WITH GREEN CLAYS,ZONE WITH RED
CLAYS OR OXIDES;
FERROUS OXIDE
Vesicles -
Size(mm): .1-.3
Size(mm): .03-.1
Percent: 1-5
Filling: CLAYS
PERCENT IS FOR TOTAL VESICLES*
Leg : 69 Top/Bottom Interval(mm): 1020/1050 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 384.00 Rock Type: IGNEOUS
Core: 16 Sample Midpoint(m) : 388.04 Sect/Pc #: 3/PCE 999
ROCK = PLAG-OL MOD PHYRIC BASALT;
Texture: MOD PHYRIC,VARIOLITIC;
Where sampled: PILLOW RIM*
Phenocrysts- OLIVINE ( 1-5%)
Size(mm): 1-3 Morphology: EUHEDRAL
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL,SUBHEDRAL
PLAGIOCLASE
Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL
Groundmass - PLAGIOCLASE (10-20%)
Size(mm): .1-.3 Morphology: EUHEDRAL,SUBHEDRAL
PERCENT IS FOR TOTAL PLAG IN SECTION;
TITANOMAGNETITE
Size(mm): .1-.3 Morphology: SKELETAL
TITANOMAGNETITE ( 1-5%)
Size(mm): .03-.1 Morphology: SKELETAL
PERCENT IS FOR TOTAL TITANO-MAGN;
CHROME SPINEL
Size(mm): .3-1 Morphology: EUHEDRAL
CHROME SPINEL ( TR%)
Size(mm): .1-.3 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL CR-SPINEL;
SPHERULITIC MESOSTASIS ( 80%)
Alteration - SMECTITE
Location: VESICLES, Replacing: OL
Location: CRACKS
Vesicles -
Size(mm): .1-.3
Percent: TR
Filling: SMECTITE
Shape: ROUND
Leg : 69 Top/Bottom Interval(mm): 820/ 840 Describer: damson, A.C.
Hole: 504B Top of Core Depth(m) : 384.00 Rock Type: IGNEOUS
Core: 16 Sample Midpoint(m) : 389.33 Sect/Pc #: 4/PCE 1011
ROCK = PLAG-OL PHYRIC BASALT;
Texture: PHYRIC,SPHERULITIC
GROUNDMASS DENSE FAN SPHERULITIC BORDERING ON
SUBOPHITIC IN SOME LOCAL AREAS,MAINLY DARK FAN
SPHERULITES,BUT IN SOME AREAS CPX GRANULES CAN
BECOME CONCENTRATED AND FORM AGGREGATES(SOME
OPHITIC),CONNECTED TO THE MATRIX BY ARBORESCENT
SPRAYS*
Phenocrysts- OLIVINE
Size(mm): 1-3 Morphology: EUHEDRAL,SUBHEDRAL
OLIVINE
Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL
PLAGIOCLASE
Size(mm): 3-10 Morphology: EUHEDRAL,SUBHEDRAL,POIKILITIC
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL,SUBHEDRAL,POIKILITIC
GLOMEROCRYSTS;
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL,SUBHEDRAL,POIKILITIC
PLAGIOCLASE (10-20%)
Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL,POIKILITIC
PHENOS,LARGER SINGLE PHENOS NORMALLY
ZONING WITH SHARP OUTER RIM,GLOMEROCRYSTS
OSCILLATIONS=ZONES WITH NO SHARP OUTER RIM,SOME
PHENOS SHOW ALTERATION TO CLAYS DOWN CRACKS,PHENOS
AND GLOMEROCRYSTS CAN BE POIKILITIC AND CONTAIN
SUBHEDRAL/ANHEDRAL PLAG GRAINS,PERCENT IS FOR
TOTAL PLAG GLOMEROCRYSTS AND PHENOS*
Groundmass - OLIVINE ( 5-10%)
Size(mm): .1-.3 Morphology: EUHEDRAL,SUBHEDRAL
PERCENT IS FOR TOTAL OL IN SECTION;
PLAGIOCLASE
Size(mm): .1-.3 Morphology: SKELETAL,DENDRITIC,EUHEDRAL
PLAGIOCLASE (10-20%)
Size(mm): .03-.1 Morphology: SKELETAL,DENDRITIC,EUHEDRAL
MICROLITES,PERCENT IS FOR TOTAL PLAG MICROLITES,
APPROX COMP AN74;
CLINOPYROXENE
Size(mm): .1-.3 Morphology: GRANULAR,SPHERULITIC
CLUMPS;
CLINOPYROXENE
Size(mm): .03-.1 Morphology: GRANULAR,SPHERULITIC
CLINOPYROXENE ( 1-5%)
Size(mm): .01-.03 Morphology: GRANULAR,SPHERULITIC
GRAINS,PERCENT IS FOR TOTAL CPX IN SECTION;
SPHERULITIC MESOSTASIS ( >40%)
TITANOMAGNETITE ( .5-1%)
CHROME SPINEL
Size(mm): .1-.3 Morphology: VERMICULAR
CHROME SPINEL ( .5-1%)
Size(mm): .03-.1 Morphology: VERMICULAR
Alteration - CLAY MINERALS
Replacing: OL
GREEN AND BROWN*
Vesicles -
Percent: TR
Filling: FE.OXIDES
Shape: ROUND
Leg : 69 Top/Bottom Interval(mm): 1050/1080 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 384.00 Rock Type: IGNEOUS
Core: 16 Sample Midpoint(m) : 391.07 Sect/Pc #: 5/PCE 1030
ROCK = PLAG-OL MOD PHYRIC BASALT;
Texture: MOD PHYRIC,VARIOLITIC;
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: EUHEDRAL,SUBHEDRAL
PLAGIOCLASE
Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL
Groundmass - PLAGIOCLASE ( 5-10%)
Size(mm): .1-.3 Morphology: EUHEDRAL,SUBHEDRAL
PERCENT IS FOR TOTAL PLAG IN SECTION,SOME
MICROLITES;
SPHERULITIC MESOSTASIS ( >80%)
CHROME SPINEL ( TR%)
Size(mm): .3-1 Morphology: EUHEDRAL
Alteration - SMECTITE ( 1-5%)
Replacing: OL
Leg : 69 Top/Bottom Interval(mm): 1100/1140 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 393.00 Rock Type: IGNEOUS
Core: 17 Sample Midpoint(m) : 394.12 Sect/Pc #: 1/PCE 1046
ROCK = PLAG-OL MOD PHYRIC BASALT;
Texture: MOD PHYRIC,VARIOLITIC;
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: EUHEDRAL,SUBHEDRAL
PLAGIOCLASE
Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL
Groundmass - PLAGIOCLASE (10-20%)
Size(mm): .1-.3 Morphology: EUHEDRAL,SUBHEDRAL
SPHERULITIC MESOSTASIS ( 80%)
TITANOMAGNETITE ( 1-5%)
Size(mm): .03-.1 Morphology: SKELETAL
CHROME SPINEL ( TR%)
Size(mm): .3-.1 Morphology: EUHEDRAL
Alteration - SMECTITE
Location: CRACKS Replacing: OL
THERE ARE THIN PLATES OF A MINERAL LOOKING LIKE
TALC,THEY ARE AMONG LIGHT OLIVE GREEN SMECTITE IN
OL PSEUDOMORPHS;
CALCITE
Location: CRACKS Replacing: OL
Leg : 69 Top/Bottom Interval(mm): 460/ 490 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 393.00 Rock Type: IGNEOUS
Core: 17 Sample Midpoint(m) : 394.98 Sect/Pc #: 2/PCE 1059
ROCK = PLAG-OL PHYRIC BASALT;
Texture: PHYRIC,VARIOLITIC;
Where sampled: PILLOW RIM*
Phenocrysts- OLIVINE ( 1-5%)
Size(mm): 1-3 Morphology: EUHEDRAL
OL PSEUDOMORPHS CONTAIN LIGHT YELLOW SMECTITE AND
ALMOST COLORLESS TALC-LOOKING SMECTITE AND
CARBONATE IN CENTRAL PARTS,A PART OF THE
PSEUDOMORPHS CONSIST OF BRIGHT GREEN CELADONITE
OR CELADONITE RIMS AND LIGHT BROWN(YELLOW)SMECTITE
CORES*
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL,SUBHEDRAL
PLAGIOCLASE
Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL
Groundmass - PLAGIOCLASE (10-20%)
Size(mm): .1-.3 Morphology: EUHEDRAL,SUBHEDRAL
PERCENT IS FOR TOTAL PLAG IN SECTION;
GLASS ( >80%)
CHROME SPINEL
Size(mm): .3-1 Morphology: EUHEDRAL
CHROME SPINEL ( TR%)
Size(mm): .1-.3 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL CR-SPINEL*
Alteration - SMECTITE ( 1-5%)
Replacing: OL
CELADONITE ( .5-1%)
Location: VESICLES Replacing: OL
CALCITE ( .5-1%)
Replacing: OL
Vesicles -
Size(mm): .1-.3
Percent: TR
Filling: CELAD
Leg : 69 Top/Bottom Interval(mm): 220/ 240 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 393.00 Rock Type: IGNEOUS
Core: 17 Sample Midpoint(m) : 396.23 Sect/Pc #: 3/PCE 1074
ROCK = PLAG-OL MOD PHYRIC BASALT;
Texture: MOD PHYRIC,VARIOLITIC,MICROLITIC
PARTLY MICROLITIC;
Where sampled: PILLOW INTERIOR*
Phenocrysts- OLIVINE ( 1-5%)
Size(mm): 1-3 Morphology: EUHEDRAL
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL,SUBHEDRAL
PLAGIOCLASE
Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL
Groundmass - PLAGIOCLASE (10-20%)
Size(mm): .1-.3 Morphology: EUHEDRAL,SUBHEDRAL
PERCENT IS FOR TOTAL PLAG IN SECTION;
SPHERULITIC MESOSTASIS ( 80%)
CHROME SPINEL ( TR%)
Size(mm): .3-1 Morphology: EUHEDRAL
Alteration - SMECTITE ( 1-5%)
Replacing: OL
CALCITE ( TR%)
Replacing: OL
Leg : 69 Top/Bottom Interval(mm): 840/ 860 Describer: damson, A.C.
Hole: 504B Top of Core Depth(m) : 398.00 Rock Type: IGNEOUS
Core: 18 Sample Midpoint(m) : 398.85 Sect/Pc #: 1/PCE 1091
ROCK = PLAG-OL MOD PHYRIC BASALT;
Texture: MOD PHYRIC
MESOSTASIS IS VERY COARSE, COMPOSED OF ACICULAR
PLAG IN PLUMOSE-DENDRITIC CPX,VERGING ON THE
GRANULAR;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): 1-3 Morphology: EUHEDRAL,SUBHEDRAL
OLIVINE
Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL,SUBHEDRAL
PLAGIOCLASE
Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL
GLOMEROCRYSTS;
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL,SUBHEDRAL,SKELETAL
PLAGIOCLASE ( 5-10%)
Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL,SKELETAL
PHENOS,PERCENT IS FOR TOTAL PLAG GLOMEROCRYSTS AND
PHENOS,ALL PLAG NORMALLY ZONED-ONLY TRACE OF
OSCILLATIONS IN LARGER EXAMPLES*
Groundmass - PLAGIOCLASE
Size(mm): .1-.3 Morphology: EUHEDRAL,SKELETAL
PLAGIOCLASE
Size(mm): .03-.1 Morphology: EUHEDRAL,SKELETAL
MICROLITES,PERCENT IS FOR TOTAL PLAG MICROLITES,
APPROX COMP AN73;
CLINOPYROXENE
Size(mm): .03-.1 Morphology: SPHERULITIC
CLINOPYROXENE ( >40%)
Size(mm): .01-.03 Morphology: SPHERULITIC
SPHERULITIC MESOSTASIS ( >40%)
Alteration - CLAY MINERALS
Replacing: OL
BROWN;
FERROUS OXIDE
Location: VESICLES Replacing: OL
Vesicles -
Size(mm): .3-1
Filling: FE.OXIDES
Shape: ROUND
Size(mm): .1-.3
Percent: 1-2
Filling: FE.OXIDES
Shape: ROUND
PERCENT IS FOR TOTAL VESICLES,FE.OXIDES ARE DARK*
Leg : 69 Top/Bottom Interval(mm): 1000/1020 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 398.00 Rock Type: IGNEOUS
Core: 18 Sample Midpoint(m) : 400.51 Sect/Pc #: 2/PCE 1112
ROCK = PLAG-OL PHYRIC BASALT;
Texture: PHYRIC,VARIOLITIC;
Phenocrysts- OLIVINE
Size(mm): 1-3 Morphology: EUHEDRAL,ANHEDRAL
OLIVINE
Size(mm): .3-1 Morphology: EUHEDRAL,ANHEDRAL
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL,SUBHEDRAL
PLAGIOCLASE
Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL
Groundmass - OLIVINE
Size(mm): .1-.3 Morphology: EUHEDRAL,ANHEDRAL
OLIVINE ( 5-10%)
Size(mm): .03-.1 Morphology: EUHEDRAL,ANHEDRAL
PERCENT IS FOR TOTAL OL IN SECTION;
PLAGIOCLASE (20-40%)
Size(mm): .1-.3 Morphology: EUHEDRAL,SUBHEDRAL
PERCENT IS FOR TOTAL PLAG IN SECTION,SOME
MICROLITES;
SPHERULITIC MESOSTASIS ( >60%)
TITANOMAGNETITE
Size(mm): .03-.1 Morphology: SKELETAL
TITANOMAGNETITE ( 1-5%)
Size(mm): .01-.03 Morphology: SKELETAL
PERCENT IS FOR TOTAL TITANO-MAGN*
Alteration - PYRITE ( .5-1%)
Location: VESICLES Replacing: OL
SMECTITE ( 1-5%)
Location: VESICLES Replacing: OL
FERROUS OXIDE ( .5-1%)
Location: VEINS Replacing: OL,PYRITE
Vesicles -
Size(mm): .3-1
Filling: SMECTITE
Shape: ROUND
Size(mm): .1-.3
Percent: .5-1
Filling: SMECTITE
Shape: ROUND
PERCENT IS FOR TOTAL VESICLES*
Leg : 69 Top/Bottom Interval(mm): 730/ 770 Describer: damson, A.C.
Hole: 504B Top of Core Depth(m) : 403.00 Rock Type: IGNEOUS
Core: 19 Sample Midpoint(m) : 403.75 Sect/Pc #: 1/PCE 1122
ROCK = PLAG-OL MOD PHYRIC BASALT;
Texture: MOD PHYRIC,SPHERULITIC
DENSE FAN SPHERULITIC GROUNDMASS-NO GRANULAR TEX;
Where sampled: FLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL
PLAGIOCLASE
Size(mm): 3-10 Morphology: EUHEDRAL,SKELETAL,SUBHEDRAL,
Morphology: POIKILITIC
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL,SKELETAL,SUBHEDRAL,
Morphology: POIKILITIC
GLOMEROCRYSTS;
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL,SUBHEDRAL,SKELETAL
PLAGIOCLASE ( 5-10%)
Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL,SKELETAL
PHENOS,PERCENT IS FOR TOTAL PLAG PHENOS AND
GLOMEROCRYSTS,NORMAL AND OSCILLATORY ZONING
PRESENT,CAN BE SKELETAL AND POIKILITIC CONTAINING
ANHEDRAL PLAG,SOME HAVE COMPLEX TWINNING*
Groundmass - OLIVINE
Size(mm): .1-.3 Morphology: EUHEDRAL,SUBHEDRAL
OLIVINE ( 1-5%)
Size(mm): .03-.1 Morphology: EUHEDRAL,SUBHEDRAL
PERCENT IS FOR TOTAL OL IN SECTION;
PLAGIOCLASE
Size(mm): .1-.3 Morphology: SKELETAL,DENDRITIC,ACICULAR
PLAGIOCLASE (20-40%)
Size(mm): .03-.1 Morphology: SKELETAL,DENDRITIC,ACICULAR
MICROLITES,PERCENT IS FOR TOTAL PLAG MICROLITES,
APPROX COMP AN78;
SPHERULITIC MESOSTASIS ( >40%)
TITANOMAGNETITE ( 1-5%)
Alteration - CLAY MINERALS
Location: VESICLES Replacing: OL
BROWN*
Vesicles -
Size(mm): .1-.3
Percent: .5-1
Filling: CLAYS
Shape: ROUND
FILLED WITH DARK OPAQUE RICH BROWN CLAYS*
Leg : 69 Top/Bottom Interval(mm): 220/ 240 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 403.00 Rock Type: IGNEOUS
Core: 19 Sample Midpoint(m) : 404.73 Sect/Pc #: 2/PCE 1135
ROCK = PLAG-CPX-OL PHYRIC BASALT
SECTION HAS COVER SLIP, ROCK HAS BRECCIA CEMENTED
ON ONE SIDE-MAINLY ALTERED GLASS AND SPHERULITIC
MATERIAL,FINER GRAINED THAN CLAST,PLAG PARTIALLY
ALTERED TO CLAYS IN BRECCIA;
Texture: PHYRIC,SPHERULITIC,MICROLITIC;
Where sampled: NEAR PILLOW RIM*
Phenocrysts- OLIVINE ( 1-5%)
Size(mm): 1-3 Morphology: EUHEDRAL,SKELETAL
ALTERED;
PLAGIOCLASE
Size(mm): 3-10 Morphology: EUHEDRAL,SKELETAL
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL,SKELETAL
PLAGIOCLASE (10-20%)
Size(mm): .3-1 Morphology: EUHEDRAL,SKELETAL
GLOMEROCRYSTS AND PHENOS,PERCENT IS FOR TOTAL PLAG
GLOMEROCRYSTS AND PHENOS,LARGELY SKELETAL XTLS,
NORMALLY ZONED,GLOMEROCRYSTS INTERGROWN WITH
SKELETAL OL(NOW CLAYS),CAN BE VERY LARGE XTLS(3-5
MM), OTHER GLOMEROCRYSTS CONSIST OF TABULAR-
EUHEDRAL PLAG-CHAOTICALLY CLUMPED;
CLINOPYROXENE ( 5-10%)
Size(mm): .3-1 Morphology: DENDRITIC,SPHERULITIC
Groundmass - SPHERULITIC MESOSTASIS ( 45%)
Alteration - CLAY MINERALS ( 1-5%)
Replacing: OL
CLAY MINERALS (10-20%)
Location: MATRIX
CLAY MINERALS ( 5-10%)
Location: VEINS
CLAY MINERALS
Location: BRECCIA Replacing: PLAG
Leg : 69 Top/Bottom Interval(mm): 580/ 600 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 403.00 Rock Type: IGNEOUS
Core: 19 Sample Midpoint(m) : 405.09 Sect/Pc #: 2/PCE 1141
ROCK = PLAG-CPX-OL PHYRIC BASALT;
Texture: PHYRIC,SPHERULITIC;
Where sampled: NEAR PILLOW RIM*
Phenocrysts- OLIVINE ( .5-1%)
Size(mm): .3-1
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL,SKELETAL
PLAGIOCLASE ( 5-10%)
Size(mm): .3-1 Morphology: EUHEDRAL,SKELETAL
PERCENT IS FOR TOTAL PLAG PHENOS,SOME EUHEDRAL
PLAG PHENOS IN LOOSE CLUMPS;
CLINOPYROXENE ( 1-5%)
Size(mm): .3-1 Morphology: ANHEDRAL,DENDRITIC
Groundmass - PLAGIOCLASE ( 5-10%)
Size(mm): .1-.3 Morphology: SKELETAL,ACICULAR
IN A BROWN SPHERULITIC MATRIX;
SPHERULITIC MESOSTASIS ( 80%)
ROUND SPHERULITES AT ONE END,COARSER PLUMOSE
SPHERULITES ON THE OTHER;
TITANOMAGNETITE ( .5-1%)
Size(mm): .03-.1
GROWS BETWEEN CPX DENDRITES AND AT JUNCTIONS OF
SPHERULITES*
Alteration - CLAY MINERALS
Location: VESICLES Replacing: OL,CPX
Vesicles -
Size(mm): <.1
Percent: TR
Filling: CLAY
Shape: ROUND
CLAY IS GREEN*
Leg : 69 Top/Bottom Interval(mm): 770/ 800 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 412.00 Rock Type: IGNEOUS
Core: 20 Sample Midpoint(m) : 412.79 Sect/Pc #: 1/PCE 1169
ROCK = PLAG-CPX SPARSELY PHYRIC BASALT;
Texture: SPARSELY PHYRIC,INTERSERTAL,SUBOPHITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL,SUBHEDRAL
PLAGIOCLASE
Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL
CLINOPYROXENE
Size(mm): 1-3 Morphology: SUBHEDRAL,ANHEDRAL,DENDRITIC
CLINOPYROXENE
Size(mm): .3-1 Morphology: SUBHEDRAL,ANHEDRAL,DENDRITIC
Groundmass - PLAGIOCLASE ( 50%)
Morphology: EUHEDRAL,SUBHEDRAL
PERCENT IS FOR TOTAL PLAG IN SECTION,LARGE PLAG
ENCLOSED BY AND ENCLOSING ANHEDRAL TO DENDRITIC
COARSE CPX PLUS A MINOR TI-MAGN RICH MESOSTASIS;
CLINOPYROXENE ( 40%)
Morphology: SUBHEDRAL,ANHEDRAL,DENDRITIC
PERCENT IS FOR TOTAL CPX IN SECTION;
SPHERULITIC MESOSTASIS (10-20%)
Morphology: SUBHEDRAL
TITANOMAGNETITE ( 1-5%)
Morphology: SKELETAL
Alteration - CLAY MINERALS
PYRITE ( TR%)
Location: GREEN ZONE Replacing: CLAYEY PATCHES
THERE IS A RED ZONE AND A GREEN ZONE IN THIS
SECTION,INTERSTITIAL PATCHES IN RED OXIDATIVE ZONE
ON ONE SIDE OF SECTION HAVE DULL REFLECTIVE
FE.OXIDE WITH RED INTERNAL REFLECTIONS*
FERROUS OXIDE
Leg : 69 Top/Bottom Interval(mm): 700/ 750 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 421.00 Rock Type: IGNEOUS
Core: 21 Sample Midpoint(m) : 421.73 Sect/Pc #: 1/PCE 1188
ROCK = APHYRIC BASALT;
Texture: APHYRIC,SUBOPHITIC
COMPLETE GRADATION IN GRAIN SIZE,QUITE COARSELY
XTLLINE OVERALL;
Where sampled: FLOW(DIKE?)INTERIOR*
Groundmass - PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL,SUBHEDRAL,ACICULAR
PLAGIOCLASE
Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL,ACICULAR
PLAGIOCLASE ( 40%)
Size(mm): .1-.3 Morphology: EUHEDRAL,SUBHEDRAL,ACICULAR
PERCENT IS FOR TOTAL PLAG;
CLINOPYROXENE
Size(mm): 1-3 Morphology: ANHEDRAL,SKELETAL,DENDRITIC
CLINOPYROXENE
Size(mm): .3-1 Morphology: ANHEDRAL,SKELETAL,DENDRITIC
CLINOPYROXENE ( 50%)
Size(mm): .1-.3 Morphology: ANHEDRAL,SKELETAL,DENDRITIC
PERCENT IS FOR TOTAL CPX;
SPHERULITIC MESOSTASIS ( 5-10%)
TITANOMAGNETITE ( 1-5%)
Size(mm): .03-.1 Morphology: SKELETAL
A BIT MOTH-EATEN*
Alteration - CLAY MINERALS
Location: INTERSTITIAL
FERROUS HYDROX MINS
Location: INTERSTITIAL
INTERSTITIAL PATCHES HAVE MOST CLAYS AND SECONDARY
FE-HYDROXIDES,LATTER ARE FAIRLY REFLECTIVE*
Leg : 69 Top/Bottom Interval(mm): 780/ 800 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 421.00 Rock Type: IGNEOUS
Core: 21 Sample Midpoint(m) : 423.29 Sect/Pc #: 2/PCE 1210
ROCK = PLAG-CPX-OL PHYRIC BASALT;
Texture: PHYRIC,SPHERULITIC
GROUNDMASS IS PARTLY PLUMOSE SPHERULITIC WITH NO
ACICULAR PLAG AND PARTLY COARSER GRAINED WITH
ACICULAR PLAG SEPARATED BY PARTLY FUZZY
SPHERULITES;
Where sampled: PILLOW RIM*
Phenocrysts- OLIVINE
Morphology: EUHEDRAL
ALTERED;
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL
PLAGIOCLASE ( 5-10%)
Size(mm): .3-1 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL PLAG PHENOS,PLAG PHENOS OCCUR
AS 1)COARSE GLOMEROCRYSTS-ANHEDRAL,2)SMALL
COARSELY CLUMPED GLOMEROCRYSTS-EUHEDRAL AND 3)
SINGLE XTLS;
CLINOPYROXENE ( 1-5%)
Size(mm): 1-3 Morphology: EUHEDRAL,ROUNDED
ROUNDED PHENOS AND POIKILITICALLY ENCLOSING PLAG*
Groundmass - PLAGIOCLASE ( 1-5%)
Size(mm): .1-.3 Morphology: SKELETAL,ACICULAR
SPHERULITIC MESOSTASIS ( 70%)
TITANOMAGNETITE ( .5-1%)
CHROME SPINEL ( TR%)
Size(mm): .1-.3
ENCLOSED IN PLAG*
Alteration - CLAY MINERALS
Location: INTERSTITIAL Replacing: OL,CPX
ID UNCERTAIN FOR CPX;
Leg : 69 Top/Bottom Interval(mm): 370/ 390 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 421.00 Rock Type: IGNEOUS
Core: 21 Sample Midpoint(m) : 427.38 Sect/Pc #: 5/PCE 1263
ROCK = PLAG-CPX-OL PHYRIC BASALT;
Texture: PHYRIC,SPHERULITIC,MICROLITIC;
Where sampled: PILLOW INTERIOR*
Phenocrysts- OLIVINE ( 1-5%)
Size(mm): 1-3 Morphology: EUHEDRAL
ALTERED;
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL,SKELETAL
PLAGIOCLASE (10-20%)
Size(mm): .3-1 Morphology: EUHEDRAL,SKELETAL
PERCENT IS FOR TOTAL PLAG PHENOS,OCCUR IN LARGE
GLOMEROCRYSTS OF ANHEDRAL-SUBHEDRAL XTLS,SMALL
GLOMEROCRYSTS OF SMALLER EUHEDRAL XTLS AND AS XTLS
POIKILITICALLY ENCLOSED BY CPX IN ROUNDED
(RESORBED)GLOMEROCRYSTS;
CLINOPYROXENE
Size(mm): 1-3 Morphology: GRANULAR,EUHEDRAL
CLINOPYROXENE ( 1-5%)
Size(mm): .3-1 Morphology: GRANULAR,EUHEDRAL
PERCENT IS FOR TOTAL CPX*
Groundmass - PLAGIOCLASE (10-20%)
Size(mm): .1-.3 Morphology: ACICULAR,SKELETAL
GROUNDMASS HAS PLAG MICROLITES AND PLAG-CPX CLUMPS
SURROUNDED BY SPHERULITES;
CLINOPYROXENE ( 5-10%)
Size(mm): .1-.3 Morphology: ACICULAR,GRANULAR,DENDRITIC
SPHERULITIC MESOSTASIS ( 50%)
TITANOMAGNETITE
Size(mm): .1-.3 Morphology: ANHEDRAL
TITANOMAGNETITE ( .5-1%)
Size(mm): .03-.1 Morphology: ANHEDRAL
PERCENT IS FOR TOTAL TITANO-MAGN,BETWEEN
SPHERULITES,APPEARS ALTERED(CORRODED)*
Alteration - CLAY MINERALS ( 5-10%)
Replacing: MATRIX
BROWN*
CLAY MINERALS ( 1-5%)
Replacing: OL
Leg : 69 Top/Bottom Interval(mm): 520/ 540 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 421.00 Rock Type: IGNEOUS
Core: 21 Sample Midpoint(m) : 427.53 Sect/Pc #: 5/PCE 1265
ROCK = PLAG MOD PHYRIC BASALT;
Texture: MOD PHYRIC,SPHERULITIC;
Where sampled: PILLOW INTERIOR
DIKE? FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL,TABULAR
PLAGIOCLASE ( 1-5%)
Size(mm): .3-1 Morphology: EUHEDRAL,TABULAR
PERCENT IS FOR TOTAL PLAG PHENOS,SCATTERED
EUHEDRAL PLAG PHENOS ARE SET IN A SPHERULITIC
GROUNDMASS WITH MINOR ACICULAR PLAG MICROLITES*
Groundmass - PLAGIOCLASE
Size(mm): .1-.3 Morphology: ACICULAR
PLAGIOCLASE ( 1-5%)
Size(mm): .03-.1 Morphology: ACICULAR
PERCENT IS FOR TOTAL GROUNDMASS PLAG,CPX AND OL
MAY ONCE HAVE BEEN PRESENT-NOW ALTERED;
SPHERULITIC MESOSTASIS ( 90%)
SPHERULITES HAVE A FUZZY APPEARANCE(ALTERATION?);
TITANOMAGNETITE ( 1-5%)
CONCENTRATED BETWEEN SPHERULITIC BUNDLES,PITTED,
CORRODED,CRACKED(THERMAL DEGRADATION)*
Alteration - CLAY MINERALS
Location: VEINS Replacing: GROUNDMASS
GREEN CLAY FILLED CRACK AT ONE END;
FERROUS OXIDE
Location: CRACKS
RED INTERNALLY REFLECTIVE OXIDE IN CRACKS*
Vesicles -
Percent: 0
Leg : 69 Top/Bottom Interval(mm): 230/ 250 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 430.00 Rock Type: IGNEOUS
Core: 22 Sample Midpoint(m) : 430.24 Sect/Pc #: 1/PCE 1271
ROCK = PLAG-OL-CPX PHYRIC BASALT;
Texture: PHYRIC,MICROLITIC,SPHERULITIC
ROCK IS MAINLY SPHERULITIC ON ONE SIDE AND ABOUT
50:50 SPHERULITIC MICROLITES ON THE OTHER;
Where sampled: PILLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): 1-3
OLIVINE ( 1-5%)
Size(mm): .3-1
PERCENT IS FOR TOTAL OL PHENOS,ALTERED;
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL,SKELETAL,TABULAR
PLAGIOCLASE (10-20%)
Size(mm): .3-1 Morphology: EUHEDRAL,SKELETAL,TABULAR
PERCENT IS FOR TOTAL PLAG PHENOS,AS ISOLATED LARGE
XTLS AND GLOMEROCRYSTS INTERGROWN WITH ALTERED OL;
CLINOPYROXENE ( .5-1%)
Size(mm): .3-1
ONE LARGE CPX IS ROUNDED,INDICATING RESORBTION*
Groundmass - PLAGIOCLASE (10-20%)
Size(mm): .1-.3 Morphology: SKELETAL,ACICULAR
CLINOPYROXENE
Size(mm): .1-.3 Morphology: DENDRITIC COXCOMB
CLINOPYROXENE (10-20%)
Size(mm): .03-.1 Morphology: DENDRITIC COXCOMB
PERCENT IS FOR TOTAL GROUNDMASS CPX;
SPHERULITIC MESOSTASIS (20-40%)
TITANOMAGNETITE
Size(mm): .03-.1
TITANOMAGNETITE ( .5-1%)
Size(mm): .01-.03
PERCENT IS FOR TOTAL TITANO-MAGN;
CHROME SPINEL ( TR%)
OCCURS IN A MICROBRECCIATED ROCK(?)*
Alteration - CLAY MINERALS (10-20%)
Location: VEINS Replacing: OL,INTERSTITIAL
Replacing: PATCHES
FILL VEINS,REPLACE OL AND ARE ASSOCIATED WITH A
BLACK ISOTROPIC LARGE FE.HYDROXIDE;
PYRITE ( TR%)
Leg : 69 Top/Bottom Interval(mm): 600/ 620 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 430.00 Rock Type: IGNEOUS
Core: 22 Sample Midpoint(m) : 432.11 Sect/Pc #: 2/PCE 1291
ROCK = PLAG-CPX-OL PHYRIC BASALT;
Texture: PHYRIC,SPHERULITIC,MICROLITIC;
Where sampled: PILLOW RIM*
Phenocrysts- OLIVINE ( .5-1%)
Size(mm): 1-3 Morphology: EUHEDRAL
ALTERED,ID UNCERTAIN FOR OL;
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL,ANHEDRAL,TABULAR
PLAGIOCLASE ( 5-10%)
Size(mm): .3-1 Morphology: EUHEDRAL,ANHEDRAL,TABULAR
PERCENT IS FOR TOTAL PLAG PHENOS,OCCUR AS SINGLE
TABULAR XTLS,SINGLE ANHEDRAL XTLS,CLUMPS OF
TABULAR XTLS OR INTERGROWN POIKILITICALLY WITH CPX
IN GLOMEROCRYSTS;
CLINOPYROXENE
Size(mm): 1-3 Morphology: ANHEDRAL
CLINOPYROXENE ( 1-5%)
Size(mm): .3-1 Morphology: ANHEDRAL
PERCENT IS FOR TOTAL CPX PHENOS,MICROPHENOS IN
GROUNDMASS ARE TABULAR TO ANHEDRAL,SOME INTERGROWN
WITH ACICULAR PLAG*
Groundmass - PLAGIOCLASE ( 5-10%)
Size(mm): .1-.3 Morphology: ACICULAR,SKELETAL
CLINOPYROXENE ( 1-5%)
Size(mm): .1-.3 Morphology: EUHEDRAL,ANHEDRAL
SPHERULITIC MESOSTASIS ( 70%)
Morphology: CIRCULAR SHEAF
Alteration - CLAY MINERALS (10-20%)
Location: VEINS Replacing: CPX,OL
ID UNCERTAIN FOR OL REPLACEMENT,ROCK HAS TWO
PROMINENT GREEN CLAY FILLED CRACKS PARALLELING ONE
END(CLOSEST TO AND PARALLEL TO PILLOW RIM),ONE
CRACK GOES RIGHT THROUGH ROUNDED(RESORBED)CPX
PHENO*
Leg : 69 Top/Bottom Interval(mm): 1150/1180 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 439.00 Rock Type: IGNEOUS
Core: 23 Sample Midpoint(m) : 440.17 Sect/Pc #: 1/PCE 1326
ROCK = PLAG-CPX-OL PHYRIC BASALT;
Texture: PHYRIC,SPHERULITIC-GLASSY;
Where sampled: PILLOW RIM*
Phenocrysts- OLIVINE
Size(mm): 1-3 Morphology: EUHEDRAL
OLIVINE ( 1-5%)
Size(mm): .3-1 Morphology: EUHEDRAL
ALTERED TO CLAYS;
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL,SKELETAL
PLAGIOCLASE (10-20%)
Size(mm): .3-1 Morphology: EUHEDRAL,SKELETAL
PERCENT IS FOR TOTAL PLAG PHENOS,PLAG PHENOS AS 1)
ISOLATED XTLS,2)SMALL TABULAR XTLS IN CLUMPS,3)
GLOMEROCRYSTS INTERGROWN WITH CPX AND OL;
CLINOPYROXENE
Size(mm): 1-3 Morphology: EUHEDRAL,ROUNDED
CLINOPYROXENE ( 1-5%)
Size(mm): .3-1 Morphology: EUHEDRAL,ROUNDED
PERCENT IS FOR TOTAL CPX PHENOS,ONE CLUMP OF FOUR*
Groundmass - PLAGIOCLASE ( 1-5%)
Size(mm): .1-.3 Morphology: ANHEDRAL,EUHEDRAL,SKELETAL
INTERGROWN PLAG MICROLITES AND ANHEDRAL CPX
CLUMPS;
CLINOPYROXENE ( 1-5%)
Size(mm): .1-.3 Morphology: EUHEDRAL
SPHERULITIC MESOSTASIS ( 80%)
MESOSTAS IS GLASSY ON ONE EDGE-PROCEEDS THROUGH
COALESCED ROUND DARK SPHERULITES TO LIGHTER,LARGER
MORE SHEAF-LIKE SPHERULITES WITH MORE DISTINCT
TITANO-MAGN BETWEEN SHEAFS,ACICULAR PLAG ALSO MORE
ABUNDANT;
TITANOMAGNETITE ( TR%)
Size(mm): .01-.03
CHROME SPINEL ( TR%)
Size(mm): .3-1
TRAPPED IN PLAG;
PYRITE ( TR%)
Size(mm): .01-.03 Morphology: GLOBULAR
PYRITE(?)ASSOCIATED WITH GREEN CLAYS IN MATRIX,
PYRITE IN EMBAYMENT IN PLAG XTL*
Alteration - CLAY MINERALS
Location: CRACKS Replacing: OL,MESOSTASIS
GREEN*
Leg : 69 Top/Bottom Interval(mm): 580/ 620 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 448.00 Rock Type: IGNEOUS
Core: 24 Sample Midpoint(m) : 450.10 Sect/Pc #: 2/PCE 1361
ROCK = PLAG-CPX-OL PHYRIC BASALT;
Texture: PHYRIC,SPHERULITIC;
Where sampled: PILLOW INTERIOR*
Phenocrysts- OLIVINE ( .5-1%)
Size(mm): 1-3 Morphology: EUHEDRAL
ALTERED;
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL,TABULAR
PLAGIOCLASE (10-20%)
Size(mm): .3-1 Morphology: EUHEDRAL,TABULAR
PERCENT IS FOR TOTAL PLAG PHENOS,PLAG PHENOS AS 1)
POIKILITICALLY ENCLOSED IN CPX AS GLOMEROCRYSTS,2)
IN PLAG GLOMEROCRYSTS CLUMPS OF LARGE ANHEDRAL
XTLS,3)AS SMALLER EUHEDRAL XTLS IN CHAOTIC
GLOMEROCRYSTS,4)AS ISOLATED XTLS;
CLINOPYROXENE
Size(mm): 1-3 Morphology: ANHEDRAL
CLINOPYROXENE ( 1-5%)
Size(mm): .3-1 Morphology: ANHEDRAL
PERCENT IS FOR TOTAL CPX PHENOS*
Groundmass - PLAGIOCLASE ( 1-5%)
Size(mm): .1-.3 Morphology: ACICULAR,SKELETAL
GROUNDMASS IS BROWN SPHERULITIC WITH TITANO-MAGN
BETWEEN SPHERULITES,IT HAS TINY ACICULAR PLAG
INTERGROWN WITH ANHEDRAL CPX <5%;
CLINOPYROXENE ( .5-1%)
Size(mm): .1-.3 Morphology: ANHEDRAL,DENDRITIC
SPHERULITIC MESOSTASIS ( 70%)
Morphology: SHEAF PLUMOSE
Alteration - CLAY MINERALS ( 1-5%)
Location: VEIN Replacing: OL
PYRITE ( TR%)
Leg : 69 Top/Bottom Interval(mm): 700/ 720 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 457.00 Rock Type: IGNEOUS
Core: 25 Sample Midpoint(m) : 457.71 Sect/Pc #: 1/PCE 1408
ROCK = APHYRIC BASALT
THE ROCK IS DIVIDED BETWEEN CLUMPS OF COARSELY
INTERGROWN PLAG AND CPX(SUBOPHITIC)AND A
SPHERULITIC MATRIX,DARK,WITH ABUNDANT TITANO-MAGN,
THERE IS A CONTINUUM OF GRAIN SIZES-NO PARTICULAR
PHENOS;
Texture: APHYRIC,SUBOPHITIC,SPHERULITIC;
Where sampled: PILLOW INTERIOR
FLOW INTERIOR?*
Groundmass - PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL,ANHEDRAL
PLAGIOCLASE
Size(mm): .3-1 Morphology: EUHEDRAL,ANHEDRAL
PLAGIOCLASE (20-40%)
Size(mm): .1-.3 Morphology: EUHEDRAL,ANHEDRAL
PERCENT IS FOR TOTAL PLAG;
CLINOPYROXENE
Size(mm): 1-3 Morphology: ANHEDRAL,DENDRITIC
CLINOPYROXENE
Size(mm): .3-1 Morphology: ANHEDRAL,DENDRITIC
CLINOPYROXENE (20-40%)
Size(mm): .1-.3 Morphology: ANHEDRAL,DENDRITIC
PERCENT IS FOR TOTAL CPX;
TITANOMAGNETITE ( 1-5%)
Morphology: SKELETAL,EUHEDRAL
SLIGHTLY PITTED AND CRACKED;
SPHERULITIC MESOSTASIS (20-40%)
Morphology: PLUMOSE
Alteration - CLAY MINERALS
Location: INTERSTITIAL
Location: MATERIAL
MUCH INTERSTITIAL MATERIAL REPLACED BY GREEN TO
RED CLAYS WITH ASSOCIATED REFLECTIVE FE-HYDROXIDE*
FERROUS HYDROX MINS
Leg : 69 Top/Bottom Interval(mm): 860/ 890 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 463.00 Rock Type: IGNEOUS
Core: 26 Sample Midpoint(m) : 463.88 Sect/Pc #: 1/PCE 1455
ROCK = PLAG-OL-CPX SPARSELY PHYRIC BASALT;
Texture: SPARSELY PHYRIC,MICROLITIC,SPHERULITIC;
Where sampled: PILLOW INTERIOR*
Phenocrysts- OLIVINE
Size(mm): 1-3 Morphology: EUHEDRAL
OLIVINE ( 1-5%)
Size(mm): .3-1 Morphology: EUHEDRAL
ALTERED,PERCENT IS FOR TOTAL OL PHENOS;
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL,SKELETAL
PLAGIOCLASE ( 1-5%)
Size(mm): .3-1 Morphology: EUHEDRAL,SKELETAL
PERCENT IS FOR TOTAL PLAG PHENOS,MICROPHENOS ARE
VERY RARE;
CLINOPYROXENE
Size(mm): 1-3 Morphology: GRANULAR,ANHEDRAL
CLINOPYROXENE ( .5-1%)
Size(mm): .3-1 Morphology: GRANULAR,ANHEDRAL
Groundmass - PLAGIOCLASE ( 5-10%)
Size(mm): .1-.3 Morphology: ACICULAR,SKELETAL
GROUNDMASS IS DIVIDED INTO 1)STELLATE CLUMPS OF
RADIATING PLAG AND ANHEDRAL CPX PLUS2)PLUMOSE
SPHERULITES WITH TITANO-MAGN RICH INTERSTITIAL
ZONES,DARK BROWN IN COLOR;
CLINOPYROXENE ( 1-5%)
Size(mm): .1-.3 Morphology: ANHEDRAL,DENDRITIC
SPHERULITIC MESOSTASIS ( 70%)
Morphology: PLUMOSE
TITANOMAGNETITE ( .5-1%)
Morphology: ANHEDRAL,SKELETAL
Alteration - CLAY MINERALS
Location: INTERSTITIAL Replacing: OL
Location: MATERIAL
GREEN;
FERROUS HYDROX MINS
Replacing: OL
FE-OXIDE,CLAY VEIN ON ONE EDGE*
Leg : 69 Top/Bottom Interval(mm): 110/ 130 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 466.00 Rock Type: IGNEOUS
Core: 27 Sample Midpoint(m) : 467.62 Sect/Pc #: 2/PCE 1478
ROCK = PLAG-CPX PHYRIC BASALT
SLIDE COVERED WITH YELLOWISH REFLECTIVE SUBSTANCE
(DIAMOND PASTE?);
Texture: PHYRIC,MICROLITIC,INTERSERTAL;
Where sampled: PILLOW INTERIOR*
Phenocrysts- PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL,SKELETAL
PLAGIOCLASE ( 5-10%)
Size(mm): .3-1 Morphology: EUHEDRAL,SKELETAL
PERCENT IS FOR TOTAL PLAG PHENOS,5% PLAG PHENOS
AND GLOMEROCRYSTS IN A MICROLITIC GROUNDMASS
COMPOSED MAINLY OF ACICULAR PLAG AND PLUMOSE
SPHERULITIC INTERSTITIAL MATERIAL,MAFIC PHENOS(OL?
CPX?)NOW REPLACED BY CLAYS*
Groundmass - PLAGIOCLASE (20-40%)
Size(mm): .1-.3 Morphology: SKELETAL,ACICULAR
CLINOPYROXENE ( 5-10%)
Morphology: DENDRITIC
PERCENT IS FOR TOTAL CPX IN SECTION;
SPHERULITIC MESOSTASIS ( >40%)
Morphology: PLUMOSE
TITANOMAGNETITE ( TR%)
Size(mm): .01-.03
RARE-MAYBE ALL ALTERED;
CHROME SPINEL ( TR%)
Size(mm): .03-.1 Morphology: EUHEDRAL
ENCLOSED IN PLAG*
Alteration - CLAY MINERALS
Location: INTERSTITIAL Replacing: MAFIC PHENOS
Location: ZONES
Leg : 69 Top/Bottom Interval(mm): 1100/1130 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 475.00 Rock Type: IGNEOUS
Core: 28 Sample Midpoint(m) : 476.12 Sect/Pc #: 1/PCE 1498
ROCK = PLAG-CPX-OL PHYRIC BASALT;
Texture: PHYRIC,SUBOPHITIC;
Where sampled: PILLOW INTERIOR
OR FLOW INTERIOR*
Phenocrysts- OLIVINE ( 1-5%)
Size(mm): .3-1 Morphology: EUHEDRAL
ALTERED;
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL,SKELETAL
PLAGIOCLASE ( 5-10%)
Size(mm): .3-1 Morphology: EUHEDRAL,SKELETAL
PERCENT IS FOR TOTAL PLAG PHENOS,SCATTERED PLAG
AND CPX PHENOS AND GLOMEROCRYSTS IN MATRIX NEARLY
AS XTLLINE AS PHENOS;
CLINOPYROXENE
Groundmass - PLAGIOCLASE (20-40%)
Size(mm): .1-.3 Morphology: GRANULAR,ANHEDRAL,SKELETAL,
Morphology: ACICULAR
CLINOPYROXENE (20-40%)
Morphology: GRANULAR,ANHEDRAL
PERCENT IS FOR TOTAL CPX IN SECTION;
SPHERULITIC MESOSTASIS ( 5-10%)
TITANOMAGNETITE ( 1-5%)
Size(mm): .03-.1 Morphology: SKELETAL,EUHEDRAL
SAMPLE HAS TITANO-MAGN RICH INTERSTITIAL PATCHES,
TITANO-MAGN SHOWS MUCH EVIDENCE FOR THERMAL
DEGRADATION(WORMY EDGES,CRACKS,ETC.)*
Alteration - SMECTITE
Location: INTERSTITIAL Replacing: OL
Location: PATCHES
ONE END OF SLIDE SHOWS OXIDATIVE ALTERATION,
INTERSTITIAL ZONES REPLACED BY UNIFORM FE-
HYDROXIDE AND/OR CLAY WITH SOME HEMATITE-GOETHITE-
LIKE REFLECTIVE MINERAL BETWEEN PLAGS,ALSO EATEN
INTO TITANO-MAGN GRAINS*
Leg : 69 Top/Bottom Interval(mm): 730/ 760 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 475.00 Rock Type: IGNEOUS
Core: 28 Sample Midpoint(m) : 477.25 Sect/Pc #: 2/PCE 1511
ROCK = BASALTIC BRECCIA
ROCK INTENSELY ALTERED,HAS RELICT SPHERULITIC
GROUNDMASS,CPX PHENOS ALL NOW CLAYS,MANY PLAG
PHENOS ALSO ARE CLAYS, ROCK IS BRECCIATED WITH
CLAYS CEMENTING PIECES TOGETHER,MANY BROKEN
MINERAL(PLAG)GRAINS IN CRACKS;
Texture: SPHERULITIC-MICROLITIC;
Where sampled: PILLOW RIM*
Phenocrysts- PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL,SKELETAL
PLAGIOCLASE ( 1-5%)
Size(mm): .3-1 Morphology: EUHEDRAL,SKELETAL
PERCENT IS FOR TOTAL PLAG PHENOS*
Groundmass - PLAGIOCLASE ( 5-10%)
Morphology: ACICULAR
CLINOPYROXENE
ALTERED TO CLAYS,ORIGINAL ABUNDANCE UNCERTAIN
(1-5%?);
SPHERULITIC MESOSTASIS (20-40%)
Alteration - CLAY MINERALS ( 1-5%)
Replacing: CPX
CLAY MINERALS ( 5-10%)
Location: VEINS
CLAY MINERALS (20-40%)
Replacing: MESOSTASIS
Leg : 69 Top/Bottom Interval(mm): 120/ 160 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 475.00 Rock Type: IGNEOUS
Core: 28 Sample Midpoint(m) : 479.64 Sect/Pc #: 4/PCE 1541
ROCK = BASALTIC BRECCIA
PLAG-CPX-OL PHYRIC BASALT BRECCIA WITH GLASS
LARGELY ALTERED ON ONE SIDE, BRECCIA IS TECTONIC
(MINERAL GRAINS ARE FRACTURED);
Texture: GLASSY-SPHERULITIC,PHYRIC;
Where sampled: PILLOW RIM*
Phenocrysts- OLIVINE ( .5-1%)
Size(mm): .3-1 Morphology: SKELETAL
ALTERED;
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL
PLAGIOCLASE ( 5-10%)
Size(mm): .3-1 Morphology: EUHEDRAL
PERCENT IS FOR TOTAL PLAG PHENOS,EUHEDRAL PLAG AND
EUHEDRAL-SUBHEDRAL CPX PHENOS PLUS RARE ALTERED
SKELETAL OL SET IN A GLASSY TO SPHERULITIC GROUND;
CLINOPYROXENE ( 1-5%)
Size(mm): .3-1 Morphology: EUHEDRAL,SUBHEDRAL
Groundmass - PLAGIOCLASE ( .5-1%)
Size(mm): .1-.3
GLASS ( 50%)
ALTERED ON ONE EDGE COMPLETELY TO CLAYS*
Leg : 69 Top/Bottom Interval(mm): 620/ 630 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 475.00 Rock Type: IGNEOUS
Core: 28 Sample Midpoint(m) : 480.13 Sect/Pc #: 4/PCE 1546
ROCK = PLAG-CPX-OL PHYRIC BASALT;
Texture: PHYRIC,INTERSERTAL,SUBOPHITIC
VARIABLE-FROM SUBOPHITIC TO SPHERULITIC;
Where sampled: PILLOW INTERIOR*
Phenocrysts- OLIVINE ( .5-1%)
Size(mm): .3-1 Morphology: GRANULAR,EUHEDRAL
ALTERED TO CLAYS AND HEMATITE(?)-A MODERATELY
REFLECTIVE MINERAL WITH RED INTERNAL REFLECTIONS;
PLAGIOCLASE
Size(mm): 1-3 Morphology: EUHEDRAL,SKELETAL
PLAGIOCLASE (20-40%)
Size(mm): .3-1 Morphology: EUHEDRAL,SKELETAL
PERCENT IS FOR TOTAL PLAG PHENOS,PLAG AND CPX FORM
GLOMEROCRYSTS;
CLINOPYROXENE
Groundmass - PLAGIOCLASE
Size(mm): .1-.3 Morphology: ACICULAR,SKELETAL
CLINOPYROXENE (20-40%)
Morphology: GRANULAR,ANHEDRAL,SKELETAL,
Morphology: DENDRITIC
PERCENT IS FOR TOTAL CPX IN SECTION;
SPHERULITIC MESOSTASIS (20-40%)
TITANOMAGNETITE ( 1-5%)
Alteration - SMECTITE
Replacing: OL,GROUNDMASS
FERROUS OXIDE
Replacing: OL
Leg : 69 Top/Bottom Interval(mm): 50/ 70 Describer: Pertsev, N.
Hole: 504B Top of Core Depth(m) : 484.00 Rock Type: IGNEOUS
Core: 29 Sample Midpoint(m) : 484.06 Sect/Pc #: 1/PCE 1559
ROCK = PLAG-OL MOD PHYRIC BASALT;
ROCK LARGELY TRANSFORMED TO CLAYS,ONE EDGE IS A
CLAY FILLED FRACTURE, HAS COVER SLIP-NO OPAQUE
MINERALS EXCEPT FOR MORPHOLOGY;
Texture: MOD PHYRIC,HYALOPILITIC;
Where sampled: PILLOW 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 ( 5-10%)
Size(mm): 1-3 Morphology: EUHEDRAL
SCATTERED PLAG PHENOS*
Groundmass - PLAGIOCLASE
Size(mm): .3-1 Morphology: ACICULAR,SKELETAL
PLAGIOCLASE (20-40%)
Size(mm): .1-.3 Morphology: ACICULAR,SKELETAL
PERCENT IS FOR TOTAL GROUNDMASS PLAG;
CLINOPYROXENE ( 5-10%)
Size(mm): .1-.3 Morphology: DENDRITIC
TITANOMAGNETITE
ALTERED;
SPHERULITIC MESOSTASIS ( 70%)
ALTERED;
CHROME SPINEL ( TR%)
XTL IN PLAG*
Alteration - SMECTITE
Location: VESICLES Replacing: OL,GROUNDMASS,
Replacing: PLAG
CLAYS IN CRACKS,SOME WITH GLASS INCLUSIONS*
Vesicles -
Percent: TR
Filling: CLAYS
|
