Leg : 65 Top/Bottom Interval(mm): 1210/1230 Describer: Robinson, P.
Hole: 482C Top of Core Depth(m) : 132.00 Rock Type: IGNEOUS
Core: 9 Sample Midpoint(m) : 133.22 Sect/Pc #: 1/PCE 13
ROCK = APHYRIC BASALT;
Texture: APHYRIC,FINE- TO MEDIUM-GRAINED,INTERGRANULAR-
SUBOPHITIC;
Where sampled: FLOW INTERIOR
BUT NEAR TO MARGIN*
Groundmass - OLIVINE ( 1%)
Size(mm): 0.2-0.5 Morphology: SUBHEDRAL
IDENTITY QUESTIONABLE--SUBHEDRAL CLOTS OF SMEC;
PLAGIOCLASE ( 45%)
Size(mm): TO 1 Morphology: SUBHEDRAL-EUHEDRAL
FRESH;
CLINOPYROXENE ( 40%)
Size(mm): TO 0.5 Morphology: ANHEDRAL
PARTLY INTERGROWN WITH PLAG,2VZ=40,FRESH;
MAGNETITE ( 3-5%)
Size(mm): TO 0.2 Morphology: SUBHEDRAL-ANHEDRAL
MOSTLY IN INTERSTITIAL PATCHES;
MICROCRYST GROUNDMASS ( 10%)
INTERSTITIAL MATERIAL,MOSTLY SMEC WITH LESSER FEL?
AND OPAL? (COLORLESS ISOTROPIC MATERIAL WITH HIGH
NEGATIVE RELIEF);
OPAL
IDENTITY QUESTIONABLE (COLORLESS ISOTROPIC
MATERIAL WITH HIGH NEGATIVE RELIEF),INTERSTITIAL
MATERIAL,MINOR;
FELDSPAR
IDENTITY QUESTIONABLE,INTERSTITIAL MATERIAL,MINOR*
Alteration - SMECTITE
Location: INTERSTITIAL, Replacing: OL
Location: VESICLES
OL? + SOME INTERSTITIAL MATERIAL REPLACED BY
GREENISH-BROWN SMEC;
CARBONATE
Location: VESICLES
VESICLES FILLED WITH SMEC + MINOR CARB*
Vesicles -
Size(mm): TO 0.5
Percent: 1
Filling: SMEC,CARB
Shape: ROUND
FILLED WITH SMEC + MINOR CARB*
Leg : 65 Top/Bottom Interval(mm): 750/ 760 Describer: Robinson, P.
Hole: 482C Top of Core Depth(m) : 139.00 Rock Type: IGNEOUS
Core: 10 Sample Midpoint(m) : 141.26 Sect/Pc #: 2/PCE 4
ROCK = APHYRIC BASALT;
Texture: APHYRIC,MEDIUM-GRAINED,INTERGRANULAR-SUBOPHITIC;
Where sampled: FLOW INTERIOR*
Groundmass - OLIVINE ( 2-3%)
Size(mm): TO 0.4 Morphology: SUBHEDRAL-ANHEDRAL
COMPLETELY REPLACED BY SMEC;
PLAGIOCLASE (40-45%)
Size(mm): TO 1.5 Morphology: EUHEDRAL-SUBHEDRAL
FRESH;
CLINOPYROXENE ( 40%)
Size(mm): 0.2-0.7 Morphology: ANHEDRAL
OFTEN PARTLY INTERGROWN WITH PLAG,2VZ=40,FRESH;
MAGNETITE ( 3-5%)
Size(mm): TO 0.2 Morphology: SUBHEDRAL-ANHEDRAL
MOSTLY IN INTERSTITIAL PATCHES;
MICROCRYST GROUNDMASS (10-15%)
INTERSTITIAL MATERIAL,MOSTLY SMEC WITH MINOR FEL?
+ APATITE + TRACES OF GREEN AMPH?;
FELDSPAR
IDENTITY QUESTIONABLE,MINOR,INTERSTITIAL;
APATITE
MINOR,INTERSTITIAL;
AMPHIBOLE ( TR%)
IDENTITY QUESTIONABLE,GREEN,INTERSTITIAL*
Alteration - SMECTITE
Location: INTERSTITIAL, Replacing: OL
Location: VESICLES
OL REPLACED BY SMEC + MINOR CARB,INTERSTITIAL
MATERIAL REPLACED BY SMEC;
CARBONATE
Replacing: OL
OL REPLACED BY SMEC + MINOR CARB*
Vesicles -
Size(mm): 1-2
Percent: 1-5
Location: RANDOM
Filling: EMPTY,SMEC
IRREGULARLY DISTRIBUTED,OPEN OR PARTLY FILLED WITH
SMEC*
Leg : 65 Top/Bottom Interval(mm): 1150/1170 Describer: Robinson, P.
Hole: 482C Top of Core Depth(m) : 148.00 Rock Type: IGNEOUS
Core: 11 Sample Midpoint(m) : 149.16 Sect/Pc #: 1/PCE 10
ROCK = APHYRIC BASALT;
Texture: APHYRIC,MEDIUM-GRAINED,INTERGRANULAR-SUBOPHITIC;
Where sampled: FLOW INTERIOR*
Groundmass - OLIVINE ( 1-2%)
Size(mm): TO 0.5 Morphology: SUBHEDRAL
IDENTITY QUESTIONABLE--COMPLETELY REPLACED BY
SMEC;
PLAGIOCLASE ( 55%)
Size(mm): TO 1 Morphology: SUBHEDRAL,LATHS
FRESH;
CLINOPYROXENE (30-35%)
Size(mm): TO 0.5 Morphology: ANHEDRAL
PARTLY INTERGROWN WITH PLAG,2VZ=40;
MAGNETITE ( 2%)
Size(mm): 0.05-0.1 Morphology: SUBHEDRAL
MOSTLY IN INTERSTITIAL PATCHES;
MICROCRYST GROUNDMASS ( 10%)
INTERSTITIAL MATERIAL,REPLACED BY YELLOW-BROWN
SMEC,MINOR APATITE;
APATITE
MINOR,INTERSTITIAL*
Alteration -
Location: INTERSTITIAL Replacing: OL
OL + SOME INTERSTITIAL MATERIAL REPLACED BY SMEC*
Vesicles -
Percent: 0
Leg : 65 Top/Bottom Interval(mm): 210/ 240 Describer: Robinson, P.
Hole: 482C Top of Core Depth(m) : 148.00 Rock Type: IGNEOUS
Core: 11 Sample Midpoint(m) : 149.72 Sect/Pc #: 2/PCE 2
ROCK = APHYRIC BASALT
HIGHLY ALTERED;
Texture: APHYRIC,MEDIUM-GRAINED,INTERGRANULAR-SUBOPHITIC*
Groundmass - OLIVINE ( 2%)
Size(mm): 0.2-0.8
IDENTITY QUESTIONABLE--POSSIBLE PSEUDOMORPHS OF
SMEC;
PLAGIOCLASE ( 50%)
Size(mm): 0.3-1.2 Morphology: SUBHEDRAL,LATHS
PARTLY REPLACED BY SMEC;
CLINOPYROXENE ( 35%)
Size(mm): 0.5-1 Morphology: ANHEDRAL
PARTLY REPLACED BY SMEC + CELADONITE? + ACTINOLITE
+ CLINOZOISITE?;
OPAQUE MINERALS ( 2-3%)
MOSTLY PYRITE;
MICROCRYST GROUNDMASS ( 10%)
INTERSTITIAL MATERIAL,ALTERED TO SMEC*
Alteration - SMECTITE
Replacing: OL,CPX
OL? TO SMEC,CPX TO SMEC + ACTINOLITE +
?CLINOZOISITE;
ACTINOLITE
Replacing: CPX
CPX TO SMEC + ACTINOLITE + ?CLINOZOISITE;
CLINOZOISITE
Replacing: CPX
CPX TO SMEC + ACTINOLITE + ?CLINOZOISITE;
SPHENE
Location: INTERSTITIAL
SOME SPHENE? IN INTERSTITIAL AREAS;
OTHER
UNKNOWN SECONDARY MINERAL,1 GRAIN,COLORLESS,
UNIAXIAL (-),HIGH POSITIVE RELIEF,LOW
BIREFRINGENCE*
Vesicles -
Percent: 0
Leg : 65 Top/Bottom Interval(mm): 220/ 240 Describer: Robinson, P.
Hole: 482C Top of Core Depth(m) : 161.50 Rock Type: IGNEOUS
Core: 13 Sample Midpoint(m) : 161.73 Sect/Pc #: 1/PCE 3
ROCK = APHYRIC BASALT
POOR THIN SECTION;
Texture: APHYRIC,MEDIUM-GRAINED,INTERSERTAL-SUBOPHITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( <1%)
Size(mm): 2-4 Morphology: SUBHEDRAL,LATHS
FRESH*
Groundmass - OLIVINE ( 2-3%)
Size(mm): 0.1-0.2 Morphology: SUBHEDRAL
COMPLETELY REPLACED BY SMEC;
PLAGIOCLASE ( 50%)
Size(mm): 0.2-1 Morphology: SUBHEDRAL,LATHS
FRESH;
CLINOPYROXENE (30-35%)
Size(mm): 0.1-0.4 Morphology: ANHEDRAL
FRESH,2VZ=40;
MICROCRYST GROUNDMASS (10-15%)
INTERSTITIAL MATERIAL,GLASSY,PARTLY REPLACED BY
SMEC;
MAGNETITE ( 3-5%)
Size(mm): 0.02-0.04 Morphology: SUBHEDRAL
Alteration - SMECTITE
Location: INTERSTITIAL, Replacing: OL
Location: VESICLES
OL + INTERSTITIAL ALTERED TO SMEC;
CARBONATE
Location: VESICLES
VESICLES FILLED WITH SMEC + MINOR CARB*
Vesicles -
Size(mm): 0.5-2
Percent: 1-2
Filling: SMEC,CARB
Shape: ROUND
FILLED WITH SMEC + MINOR CARB*
Leg : 65 Top/Bottom Interval(mm): 1050/1070 Describer: Robinson, P.
Hole: 482C Top of Core Depth(m) : 161.50 Rock Type: IGNEOUS
Core: 13 Sample Midpoint(m) : 165.56 Sect/Pc #: 3/PCE 7
ROCK = APHYRIC BASALT;
Texture: APHYRIC,COARSE-GRAINED,INTERSERTAL-SUBOPHITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( <1%)
Size(mm): 1-1.5 Morphology: SUBHEDRAL
ZONED WITH GLASSY INCLUSIONS,FRESH*
Groundmass - OLIVINE ( 2-3%)
Size(mm): 0.2-0.4 Morphology: SUBHEDRAL
REPLACED BY SMEC;
PLAGIOCLASE ( 50%)
Size(mm): 0.2-1.2 Morphology: SUBHEDRAL
FRESH;
CLINOPYROXENE (35-40%)
Size(mm): 0.2-0.8 Morphology: ANHEDRAL
2VZ=40;
MAGNETITE ( 5%)
Size(mm): 0.1-0.4 Morphology: SUBHEDRAL
MICROCRYST GROUNDMASS ( 5%)
INTERSTITIAL MATERIAL,MOSTLY GLASSY MATERIAL WITH
MINOR QUARTZ + APATITE,PARTLY REPLACED BY SMEC;
QUARTZ
MINOR,INTERSTITIAL;
APATITE
MINOR,INTERSTITIAL*
Alteration - SMECTITE
Location: INTERSTITIAL, Replacing: OL,CPX
Location: VESICLES
OL + SOME INTERSTITIAL MATERIAL REPLACED BY SMEC,
SOME CPX MARGINALLY REPLACED BY SMEC*
Vesicles -
Size(mm): 0.1-0.2
Percent: <1
Filling: SMEC
Shape: ROUND
Leg : 65 Top/Bottom Interval(mm): 370/ 390 Describer: Robinson, P.
Hole: 482C Top of Core Depth(m) : 166.00 Rock Type: IGNEOUS
Core: 14 Sample Midpoint(m) : 166.38 Sect/Pc #: 1/PCE 2C
ROCK = APHYRIC BASALT;
Texture: APHYRIC,COARSE-GRAINED,INTERSERTAL-SUBOPHITIC;
Where sampled: FLOW INTERIOR*
Groundmass - OLIVINE ( 2%)
Size(mm): 0.2-0.5 Morphology: SUBHEDRAL
REPLACED BY SMEC;
PLAGIOCLASE ( 55%)
Size(mm): 0.2-1 Morphology: SUBHEDRAL
FRESH;
CLINOPYROXENE ( 30%)
Size(mm): 0.1-0.4 Morphology: ANHEDRAL
FRESH;
MAGNETITE ( 4%)
Size(mm): 0.1-0.3 Morphology: SUBHEDRAL
MICROCRYST GROUNDMASS ( 10%)
INTERSTITIAL MATERIAL,MOSTLY MICROXLN MATERIAL
WITH SOME QUARTZ AND APATITE,PARTLY REPLACED BY
SMEC;
QUARTZ
SOME QUARTZ IN INTERSTITIAL MATERIAL;
APATITE
SOME APATITE IN INTERSTITIAL MATERIAL*
Alteration - SMECTITE
Location: INTERSTITIAL, Replacing: OL
Location: VESICLES
OL + SOME INTERSTITIAL MATERIAL ALTERED TO SMEC*
Vesicles -
Size(mm): 0.5
Percent: <1
Filling: SMEC
Shape: ROUND
Leg : 65 Top/Bottom Interval(mm): 1220/1270 Describer: Robinson, P.
Hole: 482C Top of Core Depth(m) : 166.00 Rock Type: IGNEOUS
Core: 14 Sample Midpoint(m) : 171.75 Sect/Pc #: 4/PCE 5F
ROCK = APHYRIC BASALT;
Texture: APHYRIC,MEDIUM-GRAINED,INTERSERTAL-SUBOPHITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( <1%)
Size(mm): 1-3 Morphology: SUBHEDRAL
FRESH*
Groundmass - OLIVINE ( 2-3%)
Size(mm): 0.5 Morphology: SUBHEDRAL
ALTERED TO SMEC;
PLAGIOCLASE (50-55%)
Size(mm): 0.3-1 Morphology: SUBHEDRAL
FRESH;
CLINOPYROXENE (35-40%)
Size(mm): 0.2-0.8 Morphology: ANHEDRAL
FRESH,2VZ=40;
MAGNETITE ( 2-3%)
Size(mm): 0.02-0.04 Morphology: ANHEDRAL
CRYPTOCRYSTALLINE ( 5%)
INTERSTITIAL MATERIAL,MOSTLY CRYPTXLN MATERIAL
WITH MINOR QUARTZ AND APATITE,PARTLY REPLACED BY
SMEC;
QUARTZ
MINOR,INTERSTITIAL;
APATITE
MINOR,INTERSTITIAL*
Alteration - SMECTITE
Location: INTERSTITIAL, Replacing: OL
Location: VESICLES
OL + SOME INTERSTITIAL MATERIAL ALTERED TO SMEC*
Vesicles -
Size(mm): 0.2-0.5
Percent: <1
Filling: SMEC
Shape: ROUND
Leg : 65 Top/Bottom Interval(mm): 1030/1050 Describer: Robinson, P.
Hole: 482C Top of Core Depth(m) : 175.00 Rock Type: IGNEOUS
Core: 15 Sample Midpoint(m) : 176.04 Sect/Pc #: 1/PCE 13
ROCK = PLAG-CPX-OL MODERATELY PHYRIC BASALT;
Texture: MODERATELY PORPHYRITIC,FINE-GRAINED,
INTERGRANULAR-QUENCH*
Phenocrysts- OLIVINE ( 1%)
Size(mm): 0.3-0.5 Morphology: SUBHEDRAL
REPLACED BY SMEC;
PLAGIOCLASE ( 3-5%)
Size(mm): 0.5-1 Morphology: SUBHEDRAL,LATHS
FRESH;
CLINOPYROXENE ( 1-2%)
Size(mm): 0.2-0.4
SUBOPHITIC CLOTS,2VZ=40*
Groundmass - OLIVINE ( 1-3%)
Size(mm): 0.1-0.2 Morphology: SUBHEDRAL
REPLACED BY SMEC;
PLAGIOCLASE ( 50%)
Size(mm): 0.1-0.3 Morphology: SUBHEDRAL
FRESH;
CLINOPYROXENE (30-40%)
Size(mm): 0.05-0.15 Morphology: ANHEDRAL-GRANULAR
FRESH;
MAGNETITE ( 3-4%)
Size(mm): 0.02-0.05 Morphology: SUBHEDRAL
CRYPTOCRYSTALLINE ( 5-15%)
INTERSTITIAL MATERIAL,PARTLY ALTERED TO SMEC*
Alteration - SMECTITE
Location: INTERSTITIAL, Replacing: OL
Location: VESICLES
OL + SOME INTERSTITIAL MATERIAL ALTERED TO SMEC*
Vesicles -
Size(mm): 0.1-0.3
Percent: <1
Filling: SMEC
Shape: ROUND
Leg : 65 Top/Bottom Interval(mm): 1190/1210 Describer: Robinson, P.
Hole: 482C Top of Core Depth(m) : 175.00 Rock Type: IGNEOUS
Core: 15 Sample Midpoint(m) : 177.70 Sect/Pc #: 2/PCE 14
ROCK = PLAG SPARSELY PHYRIC BASALT;
Texture: SPARSELY PORPHYRITIC,MEDIUM-GRAINED,
INTERGRANULAR-SUBOPHITIC;
Where sampled: FLOW INTERIOR*
Phenocrysts- PLAGIOCLASE ( 1-2%)
Size(mm): 1-2 Morphology: SUBHEDRAL
FRESH;
CLINOPYROXENE ( <1%)
Size(mm): 0.8 Morphology: ANHEDRAL
INTERGROWN WITH PLAG,2VZ=40*
Groundmass - OLIVINE ( 2-3%)
Size(mm): 0.4-0.6 Morphology: SUBHEDRAL
REPLACED BY SMEC;
PLAGIOCLASE ( 50%)
Size(mm): 0.1-0.5 Morphology: SUBHEDRAL
FRESH;
CLINOPYROXENE (30-35%)
Size(mm): 0.1-0.4 Morphology: ANHEDRAL
FRESH,2VZ=40;
MAGNETITE ( 2-3%)
Size(mm): 0.05-0.2 Morphology: ANHEDRAL
MICROCRYST GROUNDMASS ( 10%)
INTERSTITIAL MATERIAL,PARTLY REPLACED BY SMEC*
Alteration - SMECTITE
Location: INTERSTITIAL, Replacing: OL
Location: VESICLES
OL + SOME INTERSTITIAL MATERIAL REPLACED BY SMEC;
CARBONATE
Location: VESICLES
VESICLES FILLED WITH SMEC + MINOR CARB*
Vesicles -
Size(mm): 0.1-0.5
Percent: 1
Filling: SMEC,CARB
Shape: ROUND
FILLED WITH SMEC + MINOR CARB*
|
