Leg : 24 Top/Bottom Interval(mm): 150/1500 Analyst:
Hole: 238 Sample Midpoint (m) : 507.50
Core: 55 Top of Core Depth (m) : 506.00
Sect: 1 Top of Section Depth(m): 506.15
LITHOLOGY: BASALT;
Texture : HABIT MASSIVE WITH FOUR THIN NEAR HORIZONTAL GLASSY
ZONES LOCATED AT 15 CM + AT 90 CM + AT 123 CM + AT
135 CM;
Structure : THIN (1-3 MM) FRACTURES FILLED WITH CARBONATE, VEINS
FILLED WITH CALCITE;
Alteration : DARK GRAY TO GREENISH YELLOW RATHER FRESH MICRO-
DOLERITIC BASALT WITH RARE SMALL PHENOCRYSTS OF
PLAGIOCLASE,GLASSY ZONES HAVE GLASS PALAGONITIZED
AND ASSOCIATED WITH VEINS + FILLED VESICLES OR
CALCITE AND INCLUSIONS (OR FILLED CRACKS) OF
SLIGHTLY ALTERED CARBONATE MICRO-FOSSILS;
Comments : THE GREENISH-YELLOW AREAS MAY BE OXIDIZED OR
OTHERWISE WEATHERED, THIS INFORMATION IS FROM THE
DETAILED CORE DESCRIPTIONS FROM THE INITIAL REPORTS,
FOR FURTHER INFORMATION SEE THE PRELIMINARY
PETROGRAPHIC DESCRIPTIONS IN THE SITE 238 CHAPTER
OF THE INITIAL REPORTS;
Vesicles :
Location: Filling: CARBONATE
Shape : ROUND
ROUND VESICLES FILLED WITH CARBONATE;
Location: Filling: CALCITE
GLASS ASSOCIATED WITH VEINS AND VESICLES OF
CALCITE;
Location: Filling: CARBONATE
Shape : ROUND
ROUND VESICLES FILLED WITH CARBONATE;
Location: Filling: CALCITE
GLASS ASSOCIATED WITH VEINS AND VESICLES OF
CALCITE;
Phenocrysts: PLAGIOCLASE
MICRO-DOLERITIC BASALT WITH RARE SMALL PHENOS
OF PLAGIOCLASE;
Groundmass : AUGITE
AUGITE ABUNDANT IN GROUNDMASS;
Replacement: CARBONATE
THIN (1-3 MM) FRACTURES FILLED WITH CARBONATE;
CALCITE
GLASS ASSOCIATED WITH VEINS AND FILLED VESICLES
OF CALCITE;
Leg : 24 Top/Bottom Interval(mm): 0/1500 Analyst:
Hole: 238 Sample Midpoint (m) : 509.00
Core: 55 Top of Core Depth (m) : 506.00
Sect: 2 Top of Section Depth(m): 507.50
LITHOLOGY: BASALT;
Piece No. : PCES NO PCE NUMBERS ASSIGNED;
Texture : MICRO-DOLERITIC, FOUR THIN GLASSY LAYERS
LOCATED AT 15CM, 70CM, 80-95CM, AND 110CM;
Structure : MASSIVE, MODERATELY FRACTURED WITH 1-2MM CRACKS
NEARLY VERTICAL AND ENCRUSTED WITH CALCITE;
Comments : COLOR GREENISH-GRAY, THIS INFORMATION IS FROM THE
DETAILED CORE DESCRIPTIONS LOCATED IN THE INITIAL
REPORTS, FOR FURTHER INFORMATION SEE THE
PRELIMINARY PETROGRAPHIC DESCRIPTIONS IN THE SITE
238 CHAPTER OF THE INITIAL REPORTS;
Vesicles :
Location: Filling:
Shape : ROUND
ABUNDANT ROUND VESICLES FILLED;
Replacement: CALCITE
Alteration : SOMEWHAT WEATHERED(?);
Leg : 24 Top/Bottom Interval(mm): 0/1500 Analyst:
Hole: 238 Sample Midpoint (m) : 510.50
Core: 55 Top of Core Depth (m) : 506.00
Sect: 3 Top of Section Depth(m): 509.00
LITHOLOGY: BASALT;
Piece No. : PCES NO PCE NUMBERS ASSIGNED;
Texture : MICRO-DOLERITIC;
Structure : MASSIVE, LITTLE FRACTURED, TWO VEINS OF CARB 3-6MM
WIDE;
Comments : IN UPPER PART OF SECTION POSSIBLE METAMORPHOSED
CALCAREOUS SEDIMENTS, GREENISH-GRAY TO DARK GRAY;
Vesicles :
Location: Filling: CALCITE
Shape : ROUND
LARGE ROUND VESICLES, SOME FILLED WITH CALCITE,
MOST SHOW RIMS ONLY OR ARE EMPTY;
Groundmass : AUGITE
AUGITE COMMON, RATHER FRESH;
Replacement: CARBONATE
IN VEINS;
CALCITE
IN SOME VESICLES;
Leg : 24 Top/Bottom Interval(mm): 0/1500 Analyst:
Hole: 238 Sample Midpoint (m) : 517.00
Core: 56 Top of Core Depth (m) : 515.50
Sect: 1 Top of Section Depth(m): 515.50
LITHOLOGY: BASALT;
Piece No. : PCES NO PCE NUMBERS ASSIGNED;
Texture : PHENOS RARE, GLASSY ZONE AT 130-140CM, MICRO-
DOLERITIC;
Structure : MASSIVE, POROUS AT TOP OF SECTION (0-10CM)-PROBABLY
CENTRAL PORTION OF A LAVA FLOW, FRACTURES FILLED
WITH CALCITE AGGREGATES;
Alteration : FRESH
RATHER FRESH;
Comments : DARK-GRAY, THIS INFORMATION IS FROM THE DETAILED
CORE DESCRIPTIONS LOCATED IN THE INITIAL REPORTS,
FOR FURTHER INFORMATION SEE THE PRELIMINARY
PETROGRAPHIC DESCRIPTIONS IN THE SITE 238 CHAPTER OF
THE INITIAL REPORTS;
Vesicles : Size(mm): TO 5 Percent:
Location: Filling: CARB,CHLORITE
Shape : ROUND
HIGHLY VESICULAR ZONE AT TOP OF SECTION, LARGE
ROUND VESICLES EMPTY OR PARTIALLY TO WHOLLY
FILLED BY CARB-CHLORITE;
Phenocrysts: PHENOS RARE;
Groundmass : AUGITE
ABUNDANT;
Replacement: CARBONATE
CHLORITE
CARB-CHLORITE FILLING VESICLES, CARB AGGREGATES
IN FRACTURES;
Leg : 24 Top/Bottom Interval(mm): 0/1500 Analyst:
Hole: 238 Sample Midpoint (m) : 518.50
Core: 56 Top of Core Depth (m) : 515.50
Sect: 2 Top of Section Depth(m): 517.00
LITHOLOGY: BASALT;
Piece No. : PCES NO PCE NUMBERS ASSIGNED;
Texture : PLAG AND AUGITE PHENOS PRESENT,
PALAGONITIZED AND DEVITRIFYING BASALTIC GLASS, VERY
FINE-GRAINED;
Structure : MASSIVE, SMALL IRREGULAR VUGS AND CAVITIES FILLED
OR LINED WITH CALCITE;
Alteration : ALTERED;
Comments : DARK-GRAY, IRON COMPOUNDS GIVE BROWN HUE TO GNDMASS
AND VESICLES;
THIS INFORMATION IS FROM THE DETAILED CORE
DESCRIPTIONS LOCATED IN THE INITIAL REPORTS, FOR
FURTHER INFORMATION SEE THE PRELIMINARY
PETROGRAPHIC DESCRIPTIONS IN THE SITE 238 CHAPTER
OF THE INITIAL REPORTS;
Vesicles :
Location: Filling: CALCITE,ZEOLITES
ROUND VESICLES FILLED OR LINED WITH CALCITE, SOME
EXTREMELY VESICULAR HORIZONS WITH SMALL ROUND
VESICLES FILLED WITH ZEOLITES;
Phenocrysts: PLAGIOCLASE
FRESH;
AUGITE
RARE, OCCASIONAL AGGREGATES OF PLAG-AUGITE PHENOS;
Replacement: CALCITE
ZEOLITE
Leg : 24 Top/Bottom Interval(mm): 60/1500 Analyst:
Hole: 238 Sample Midpoint (m) : 520.00
Core: 56 Top of Core Depth (m) : 515.50
Sect: 3 Top of Section Depth(m): 518.56
LITHOLOGY: BASALT;
Piece No. : PCES NO PCE NUMBERS ASSIGNED;
Texture : SOME PLAG PHENOCRYSTS PRESENT,
DOLERITIC (DIABASIC);
Structure : MASSIVE, FRACTURES PRESENT;
Comments : DARK GRAY, THIN OXIDATION ZONES ALONG THE FRACTURES,
OXIDIZED ZONE AT 87-95CM, THIS INFORMATION IS FROM
THE DETAILED CORE DESCRIPTIONS LOCATED IN THE
INITIAL REPORTS, FOR FURTHER INFORMATION SEE THE
PRELIMINARY PETROGRAPHIC DESCRIPTIONS IN THE SITE
238 CHAPTER OF THE INITIAL REPORTS;
Vesicles : Size(mm): Percent: 0
Phenocrysts: PLAGIOCLASE
SOME PLAG PHENOS, AGGREGATES OF CORRODED PLAG
PHENOS;
Replacement: CHLORITE
Minerals Replaced: PLAG
ALTERATION TO CHLORITE COMMON;
Leg : 24 Top/Bottom Interval(mm): 1060/1500 Analyst:
Hole: 238 Sample Midpoint (m) : 526.50
Core: 57 Top of Core Depth (m) : 525.00
Sect: 1 Top of Section Depth(m): 526.06
LITHOLOGY: BASALT;
Piece No. : PCE NO PCE NUMBERS ASSIGNED;
Structure : MASSIVE, TWO FRACTURES FILLED BY CHLORITE-ZEOLITE
AGGREGATES;
Comments : DARK-GRAY, THIS INFORMATION IS FROM THE DETAILED
CORE DESCRIPTIONS LOCATED IN THE INITIAL REPORTS,
FOR FURTHER INFORMATION SEE THE PRELIMINARY
PETROGRAPHIC DESCRIPTIONS IN THE SITE 238 CHAPTER
OF THE INITIAL REPORTS;
Replacement: CHLORITE
ZEOLITE
Leg : 24 Top/Bottom Interval(mm): 0/1500 Analyst:
Hole: 238 Sample Midpoint (m) : 528.00
Core: 57 Top of Core Depth (m) : 525.00
Sect: 2 Top of Section Depth(m): 526.50
LITHOLOGY: BASALT;
Piece No. : PCE NO PCE NUMBERS ASSIGNED;
Texture : RARE SMALL PHENOS OF PLAG AND OL, INTERSERTAL,
SEVERAL GLASSY LAYERS ASSOCIATED WITH VEINS OR
INCLUSIONS OF METAMORPHOSED SEDIMENTS;
Structure : MASSIVE, VEINS PRESENT;
Comments : DARK GRAY, INCLUSIONS OF METAMORPHOSED SEDIMENTS,
THIS INFORMATION IS FROM THE DETAILED CORE
DESCRIPTIONS LOCATED IN THE INITIAL REPORTS, FOR
FURTHER INFORMATION SEE THE PRELIMINARY
PETROGRAPHIC DESCRIPTIONS IN THE SITE 238 CHAPTER
OF THE INITIAL REPORTS;
Vesicles : Size(mm): Percent: 0
Phenocrysts: PLAGIOCLASE
OLIVINE
FRESH, RARE PHENOS;
Leg : 24 Top/Bottom Interval(mm): 0/1500 Analyst:
Hole: 238 Sample Midpoint (m) : 529.50
Core: 57 Top of Core Depth (m) : 525.00
Sect: 3 Top of Section Depth(m): 528.00
LITHOLOGY: BASALT;
Piece No. : PCE NO PCE NUMBERS ASSIGNED;
Texture : MICRO-DOLERITIC, TWO GLASSY LAYERS OVERLYING
HORIZONS OF CAVITIES;
Structure : MASSIVE, HORIZONS OF CAVITIES FILLED WITH CALCITE-
CHLORITE AND ASSOCIATED WITH LENSES OR INCLUSIONS
OF PARTIALLY-RECRYSTALLIZED MICRO-FOSSIL ASSEMBLAGES
AND CARB SEDIMENT;
Alteration : MICRO-DOLERITIC WITH ALTERED GRAINS;
Comments : PARTIALLY RECRYSTALLIZED MICRO-FOSSIL ASSEMBLAGES AN
CARB SEDIMENT PRESENT, DARK GRAY, THIS INFORMATION
IS FROM THE DETAILED CORE DESCRIPTIONS LOCATED IN
THE INITIAL REPORTS, FOR FURTHER INFORMATION SEE
THE SITE 238 CHAPTER OF THE INITIAL REPORTS;
Vesicles : Size(mm): Percent: 0
Groundmass : PLAGIOCLASE
PARTIALLY CHLORITIZED WITH AUGITE AND DUSTY
OPAQUES;
Replacement: CHLORITE
CALCITE
Leg : 24 Top/Bottom Interval(mm): 500/1500 Analyst:
Hole: 238 Sample Midpoint (m) : 533.00
Core: 58 Top of Core Depth (m) : 531.50
Sect: 1 Top of Section Depth(m): 532.00
LITHOLOGY: BASALT;
Piece No. : PCE NO PCE NUMBERS ASSIGNED;
Texture : ZONE OF BRECCIATED GLASS;
Structure : MASSIVE, POSSIBLE FILLED CRACK OF SEDIMENTS;
Comments : DARK GRAY, INCLUSIONS OF METAMORPHOSED SEDIMENTS
ORIENTED ALMOST VERTICALLY (FILLED CRACK?), THIS
INFORMATION IS FROM THE DETAILED CORE DESCRIPTIONS
LOCATED IN THE INITIAL REPORTS, FOR FURTHER
INFORMATION SEE THE PRELIMINARY PETROGRAPHIC
DESCRIPTIONS IN THE SITE 238 CHAPTER OF THE INITIAL
REPORTS;
Leg : 24 Top/Bottom Interval(mm): 0/1500 Analyst:
Hole: 238 Sample Midpoint (m) : 534.50
Core: 58 Top of Core Depth (m) : 531.50
Sect: 2 Top of Section Depth(m): 533.00
LITHOLOGY: BASALT;
Piece No. : PCES NO PCE NUMBERS ASSIGNED;
Texture : THREE GLASSY HORIZONS LOCATED AT 35CM, 105CM, AND
150CM, PLAG-OL PHENOS PRESENT;
Structure : MASSIVE;
Comments : DARK GRAY, THIS INFORMATION IS FROM THE DETAILED
CORE DESCRIPTIONS LOCATED IN THE INITIAL REPORTS,
FOR FURTHER INFORMATION SEE THE PRELIMINARY
PETROGRAPHIC DESCRIPTIONS IN THE SITE 238 CHAPTER
IN THE INITIAL REPORTS;
Alteration : RATHER ALTERED;
Vesicles : VERY SLIGHTLY VESICULAR;
Phenocrysts: PLAGIOCLASE
IRREGULAR;
OLIVINE
RARE ALTERED OL PHENOS;
Groundmass : AUGITE
Leg : 24 Top/Bottom Interval(mm): 0/1500 Analyst:
Hole: 238 Sample Midpoint (m) : 536.00
Core: 58 Top of Core Depth (m) : 531.50
Sect: 3 Top of Section Depth(m): 534.50
LITHOLOGY: BASALT;
Piece No. : PCES NO PCE NUMBERS ASSIGNED;
Texture : MICRO-DOLERITE, NOT MARKEDLY PORPHYRITIC, ZONES OF
GLASS AND GLASSY RIMS ON CAVITIES, THREE GLASS
HORIZONS AT 0-5CM, 55-60CM, AND 110-115CM;
Structure : MASSIVE, CAVITIES PRESENT WITH GLASS RIMS;
Alteration : GNDMASS AUGITE PARTIALLY ALTERED;
Comments : DARK GRAY, LOCALLY IRON STAINED, THIS INFORMATION IS
FROM THE DETAILED CORE DESCRIPTIONS LOCATED IN THE
INITIAL REPORTS, FOR FURTHER INFORMATION SEE THE
PRELIMINARY PETROGRAPHIC DESCRIPTIONS IN THE SITE
238 CHAPTER OF THE INITIAL REPORTS;
Groundmass : PLAGIOCLASE
AUGITE
PARTIALLY ALTERED AUGITE;
Leg : 24 Top/Bottom Interval(mm): 60/1500 Analyst:
Hole: 238 Sample Midpoint (m) : 537.50
Core: 58 Top of Core Depth (m) : 531.50
Sect: 4 Top of Section Depth(m): 536.06
LITHOLOGY: PLAG SPARSELY PHYRIC BASALT;
Piece No. : PCES NO PCE NUMBERS ASSIGNED;
Texture : SPARSELY PHYRIC, THREE GLASSY ZONES, GLASSY
SELVAGES, MICRO-DOLERITE (MICRO-DIABASE);
Structure : MASSIVE, NARROW FRACTURES FILLED WITH CALCITE;
Alteration : FRESH;
MOD FRESH;
Comments : DARK GRAY, INCLUSIONS OF METAMORPHOSED CARBONATE
SEDIMENTS AND PARTIALLY RECRYSTALLIZED MICRO-FOSSILS
BETWEEN GLASSY SELVAGES, THIS INFORMATION IS FROM
THE DETAILED CORE DESCRIPTIONS LOCATED IN THE
INITIAL REPORTS, FOR FURTHER INFORMATION SEE THE
PRELIMINARY PETROGRAPHIC DESCRIPTIONS IN THE SITE
238 CHAPTER OF THE INITIAL REPORTS;
Phenocrysts: PLAGIOCLASE
Groundmass : AUGITE
MOD FRESH;
ORTHOPYROXENE
VERY MINOR OPX IN GNDMASS;
Replacement: CALCITE
FILLING FRACTURES;
Leg : 24 Top/Bottom Interval(mm): 0/1500 Analyst:
Hole: 238 Sample Midpoint (m) : 539.00
Core: 58 Top of Core Depth (m) : 531.50
Sect: 5 Top of Section Depth(m): 537.50
LITHOLOGY: BASALT;
Piece No. : PCES NO PCE NUMBERS ASSIGNED;
Texture : FOUR THIN GLASSY ZONES;
Structure : FRACTURES OR JOINTS FILLED WITH CHLORITE-CALCITE-
ZEOLITE ASSEMBLAGE, MASSIVE;
Comments : DARK GRAY, THIS INFORMATION IS FROM THE DETAILED
CORE DESCRIPTIONS LOCATED IN THE INITIAL REPORTS,
FOR FURTHER INFORMATION SEE THE PRELIMINARY
PETROGRAPHIC DESCRIPTIONS IN THE SITE 238 CHAPTER
OF THE INITIAL REPORTS;
Replacement: CHLORITE
CALCITE
ZEOLITE
CHLORITE-CALCITE-ZEOLITE ASSEMBLAGE;
Leg : 24 Top/Bottom Interval(mm): 440/1500 Analyst:
Hole: 238 Sample Midpoint (m) : 540.50
Core: 59 Top of Core Depth (m) : 539.00
Sect: 1 Top of Section Depth(m): 539.44
LITHOLOGY: BASALT;
Piece No. : PCES NO PCE NUMBERS ASSIGNED;
Texture : RARE PHENOS OF PLAG, DOLERITIC, THREE GLASSY
HORIZONS;
Structure : MASSIVE, LITTE FRACTURED;
Alteration : CHLORITIZATION COMMON;
Comments : DARK GRAY, THIS INFORMATION IS FROM THE DETAILED
CORE DESCRIPTIONS LOCATED IN THE INITIAL REPORTS,
FOR FURTHER INFORMATION SEE THE PRELIMINARY
PETROGRAPHIC DESCRIPTIONS IN THE SITE 238 CHAPTER
OF THE INITIAL REPORTS;
Phenocrysts: PLAGIOCLASE
Size(mm): 3-4
RARE;
Groundmass : AUGITE
LOCALLY LITTLE ALTERED, DUSTY AGGREGATES OF DARK
MINERALS;
Leg : 24 Top/Bottom Interval(mm): 0/1500 Analyst:
Hole: 238 Sample Midpoint (m) : 542.00
Core: 59 Top of Core Depth (m) : 539.00
Sect: 2 Top of Section Depth(m): 540.50
LITHOLOGY: BASALT;
Piece No. : PCES NO PCE NUMBERS ASSIGNED;
Texture : DOLERITIC, INTERSERTAL TEXTURE, GLASSY
SELVAGES BORDERING FINE-GRAINED METAMORPHOSED CARB
SEDIMENTS;
Structure : MASSIVE, FRACTURED;
Comments : DARK GRAY, FINE-GRAINED METAMORPHOSED CARB SEDIMENT
WITH FEW RECOGNIZABLE MICRO-FOSSILS PRESENT, IRON
STAINED, THIS INFORMATION IS FROM THE DETAILED CORE
DESCRIPTIONS LOCATED IN THE INITIAL REPORTS, FOR
FURTHER INFORMATION SEE THE PRELIMINARY
PETROGRAPHIC DESCRIPTIONS IN THE SITE 238 CHAPTER OF
THE INITIAL REPORTS;
Groundmass : OLIVINE
SOME OL;
PLAGIOCLASE
COARSE PLAG AGGREGATES RATHER THAN INDIVIDUAL
PHENOS;
OPAQUE MINERALS
DUSTY AGGREGATES OF OPAQUES;
Leg : 24 Top/Bottom Interval(mm): 0/1500 Analyst:
Hole: 238 Sample Midpoint (m) : 543.50
Core: 59 Top of Core Depth (m) : 539.00
Sect: 3 Top of Section Depth(m): 542.00
LITHOLOGY: BASALT;
Piece No. : PCES NO PCE NUMBERS ASSIGNED;
Texture : SMALL PHENOS OF PLAG AND OL PRESENT, FIBROUS TO
ACICULAR AUGITE GNDMASS;
Structure : SHOWING FLOW STRUCTURE IN PLAG NEEDLE ALIGNMENT;
Comments : DARK GRAY, THREE HORIZONS OF BRECCIATED GLASS WITH
DIP INCREASING WITH DEPTH IN SECTION, UPPER PORTION
OF BRECCIA HORIZON IS VERY FRESH TO PALAGONITIZED
BASALTIC GLASS WITH RARE SMALL PLAG AND OL PHENOS,
CRACKS FILLED WITH CALCITE, THE MID-PORTION IS
STAINED GLASS AND SMALL PLAG NEEDLES, WITH CALCITE
FILLING CAVITIES AND CRACKS IN LARGE GRAINS OF
PLAG, THE LOWER PART OF THE ZONE IS SIMILAR TO THE
MIDDLE, WITH NEEDLES SHOWING FLOW AND LESS CALCITE
PRESENT, RATHER ALTERED, THIS INFORMATION IS FROM
THE DETAILED CORE DESCRIPTIONS LOCATED IN THE
INITIAL REPORTS, FOR FURTHER INFORMATION SEE THE
PRELIMINARY PETROGRAPHIC DESCRIPTIONS IN THE SITE
238 CHAPTER OF THE INITIAL REPORTS;
Vesicles : Size(mm): Percent: 0
Phenocrysts: PLAGIOCLASE
SMALL;
OLIVINE
FRESH;
Groundmass : AUGITE
AUGITE COMMON IN GNDMASS, FIBROUS TO ACICULAR;
Leg : 24 Top/Bottom Interval(mm): 0/1500 Analyst:
Hole: 238 Sample Midpoint (m) : 545.00
Core: 59 Top of Core Depth (m) : 539.00
Sect: 4 Top of Section Depth(m): 543.50
LITHOLOGY: DIABASE;
Piece No. : PCES NO PCE NUMBERS ASSIGNED;
Texture : COARSE, NOT MARKEDLY PORPHYRITIC, RARE PHENOS OF
PLAG, GLASSY ZONE AT 15CM, GLASS FRAGMENT AT BOTTOM;
Structure : MASSIVE, LITTLE-JOINTED, NO OBVIOUS DIRECTIONAL
FLOW STRUCTURES;
Alteration : FRESH;
Comments : ROLLED (?) FRAGMENT OF METAMORPHOSED SEDIMENT AND
GLASS AT BOTTOM, THIS INFORMATION IS FROM THE
DETAILED CORE DESCRIPTIONS LOCATED IN THE INITIAL
REPORTS, FOR FURTHER INFORMATION SEE THE
PRELIMINARY PETROGRAPHIC DESCRIPTIONS IN THE SITE
238 CHAPTER OF THE INITIAL REPORTS;
Phenocrysts: PLAGIOCLASE
RARE PHENOS OF PLAG;
Groundmass : AUGITE
FRESH;
PLAGIOCLASE
SOMEWHAT CHLORITIZED;
OPAQUE MINERALS
DUSTY AGGREGATES;
Leg : 24 Top/Bottom Interval(mm): 420/1500 Analyst:
Hole: 238 Sample Midpoint (m) : 549.00
Core: 60 Top of Core Depth (m) : 547.50
Sect: 1 Top of Section Depth(m): 547.92
LITHOLOGY: BASALT;
Piece No. : PCES NO PCE NUMBERS ASSIGNED;
Texture : PLAG PHENOS PRESENT,
ABUNDANT BROWN GLASS, SEVERAL GLASSY ZONES DIPPING;
Structure : SLIGHTLY FRACTURED, MASSIVE, FLOWAGE ALIGNMENT
SHOWN BY FINE PLAG NEEDLES IN GLASS, CAVITIES AND
CRACKS FILLED WITH CALCITE;
Comments : DARK GRAY TO GRAYISH BROWN, THIS INFORMATION IS
FROM THE DETAILED CORE DESCRIPTIONS LOCATED IN THE
INITIAL REPORTS, FOR FURTHER INFORMATION SEE THE
PRELIMINARY PETROGRAPHIC DESCRIPTIONS IN THE SITE
238 CHAPTER OF THE INITIAL REPORTS;
Phenocrysts: PLAGIOCLASE
AGGREGATES OF LARGE STUBBY PLAG GRAINS MAKE
PHENOS, PLAG PHENOS CORRODED;
Leg : 24 Top/Bottom Interval(mm): 0/1500 Analyst:
Hole: 238 Sample Midpoint (m) : 550.50
Core: 60 Top of Core Depth (m) : 547.50
Sect: 2 Top of Section Depth(m): 549.00
LITHOLOGY: DIABASE;
Piece No. : PCES NO PCE NUMBERS ASSIGNED;
Texture : GLASSY ZONES PRESENT, LOCATED AT 45CM, 80CM, 125CM,
AND 135CM, PLAG PHENOS PRESENT;
Structure : SLIGHTLY FRACTURED;
Alteration : FRESH;
FAIRLY FRESH;
Comments : DARK GRAY, THIS INFORMATION IS FROM THE DETAILED
CORE DESCRIPTIONS LOCATED IN THE INITIAL REPORTS,
FOR FURTHER INFORMATION SEE THE PRELIMINARY
PETROGRAPHIC DESCRIPTIONS IN THE SITE 238 CHAPTER
OF THE INITIAL REPORTS;
Vesicles : RARE VESICLES WITH FINE-GRAINED RIMS, EMPTY;
Phenocrysts: PLAGIOCLASE
AGGREGATES OF STUBBY ANHEDRAL PLAG MAKE PHENOS;
Groundmass : AUGITE
COMMON;
OLIVINE
SOME;
Leg : 24 Top/Bottom Interval(mm): 0/1500 Analyst:
Hole: 238 Sample Midpoint (m) : 552.00
Core: 60 Top of Core Depth (m) : 547.50
Sect: 3 Top of Section Depth(m): 550.50
LITHOLOGY: BASALT;
Piece No. : PCES NO PCE NUMBERS ASSIGNED;
Structure : MASSIVE, FRACTURES FILLED BY CALCITE, ONE FRACTURE
IS ENRICHED BY YELLOW MATERIAL (SULFUR?);
Comments : SEDIMENTS (MARBLE) ARE PRESENT AT 55-60CM, THERE IS
ONE INCLUSION OF METAMORPHOSED SEDIMENTS WITH
LAYERING (MARBLE), THIS INFORMATION IS FROM THE
DETAILED CORE DESCRIPTIONS LOCATED IN THE INITIAL
REPORTS, FOR FURTHER INFORMATION SEE PRELIMINARY
PETROGRAPHIC REPORTS IN THE SITE 238 CHAPTER OF
THE INITIAL REPORTS;
Replacement: CALCITE
Leg : 24 Top/Bottom Interval(mm): 0/1500 Analyst:
Hole: 238 Sample Midpoint (m) : 553.50
Core: 60 Top of Core Depth (m) : 547.50
Sect: 4 Top of Section Depth(m): 552.00
LITHOLOGY: BASALT;
Piece No. : PCES NO PCE NUMBERS ASSIGNED;
Texture : PLAG PHENOS PRESENT, SIX GLASSY ZONES
ARE ASSOCIATED WITH METAMORPHOSED
SEDIMENTS AND CALCITE;
Structure : MASSIVE;
Comments : DARK GRAY, METAMORPHOSED SEDIMENTS ARE PRESENT, THIS
INFORMATION IS FROM THE DETAILED CORE DESCRIPTIONS
LOCATED IN THE INITIAL REPORTS, FOR FURTHER
INFORMATION SEE THE PRELIMINARY PETROGRAPHIC
DESCRIPTIONS IN THE SITE 238 CHAPTER OF THE INITIAL
REPORTS;
Phenocrysts: PLAGIOCLASE
Replacement: CALCITE
Leg : 24 Top/Bottom Interval(mm): 0/1500 Analyst:
Hole: 238 Sample Midpoint (m) : 558.00
Core: 61 Top of Core Depth (m) : 556.50
Sect: 1 Top of Section Depth(m): 556.50
LITHOLOGY: BASALT;
Piece No. : PCES NO PCE NUMBERS ASSIGNED;
Texture : GLASSY ZONES AND SELVAGES ASSOCIATED WITH
INCLUSIONS AND CRACK FILLINGS;
Structure : MASSIVE, CAVITIES AND SEAMS FILLED WITH
PALAGONITIZED GLASS, LOCALLY FRACTURED, CRACKS
FILLED WITH FINE-GRAINED METAMORPHOSED CARB
SEDIMENTS;
Comments : DARK GRAY, EXTREMELY FINE-GRAINED CARB METAMORPHOSED
SEDIMENT WITH NO OBVIOUS MICROFOSSILS STILL EVIDENT,
THIS INFORMATION IS FROM THE DETAILED CORE
DESCRIPTIONS LOCATED IN THE INITIAL REPORTS, FOR
FURTHER INFORMATION SEE THE PRELIMINARY
PETROGRAPHIC DESCRIPTIONS IN THE SITE 238 CHAPTER
OF THE INITIAL REPORTS;
Leg : 24 Top/Bottom Interval(mm): 0/1500 Analyst:
Hole: 238 Sample Midpoint (m) : 559.50
Core: 61 Top of Core Depth (m) : 556.50
Sect: 2 Top of Section Depth(m): 558.00
LITHOLOGY: BASALT;
Piece No. : PCES NO PCE NUMBERS ASSIGNED;
Texture : RARE PHENOS OF PLAG, ONE GLASSY LAYER IN THE UPPER
PART OF THE SECTION, MEDIUM-GRAINED, EQUIGRANULAR;
Structure : MASSIVE, RELATIVELY UNFRACTURED;
Alteration : SOMEWHAT ALTERED;
Comments : DARK GRAY, THIS INFORMATION IS FROM THE DETAILED
CORE DESCRIPTIONS LOCATED IN THE INITIAL REPORTS,
FOR FURTHER INFORMATION SEE THE PRELIMINARY
PETROGRAPHIC DESCRIPTIONS IN THE SITE 238 CHAPTER OF
THE INITIAL REPORTS;
Vesicles :
Location: Filling: R
Shape : OUND
ROUND VESICLES, FILLED WITH FINE-GRAINED
CHLORITE(?) AND WITH DUSTY AGGREGATES OF OPAQUES
LOCALLY IN POCKETS OR AT RIM;
Phenocrysts: PLAGIOCLASE
RARE, SMALL, FRESH;
Groundmass : AUGITE
ABUNDANT;
OLIVINE
OCCASIONALLY PRESENT;
Replacement: CHLORITE
QUESTIONABLE;
OPAQUE MINERALS
Leg : 24 Top/Bottom Interval(mm): 0/1500 Analyst:
Hole: 238 Sample Midpoint (m) : 561.00
Core: 61 Top of Core Depth (m) : 556.50
Sect: 3 Top of Section Depth(m): 559.50
LITHOLOGY: BASALT;
Piece No. : PCES NO PCE NUMBERS ASSIGNED;
Texture : MICRO-DOLERITIC, PLAG PHENOS PRESENT,
THREE MAJOR GLASSY HORIZONS LOCATED AT
13CM, 75-80CM, AND 100CM;
Structure : LOCALLY FRACTURED, NO FLOW STRUCTURE;
Alteration : FRESH
FAIRLY FRESH;
Comments : DARK GRAY, THIS INFORMATION IS FROM THE DETAILED
CORE DESCRIPTIONS LOCATED IN THE INITIAL REPORTS,
FOR FURTHER INFORMATION SEE THE PRELIMINARY
PETROGRAPHIC DESCRIPTIONS IN THE SITE 238 CHAPTER
OF THE INITIAL REPORTS;
Phenocrysts: PLAGIOCLASE
CORRODED;
Groundmass : PLAGIOCLASE
PARTIALLY CHLORITIZED;
AUGITE
ANHEDRAL, COMMON TO ABUNDANT;
Leg : 24 Top/Bottom Interval(mm): 0/1500 Analyst:
Hole: 238 Sample Midpoint (m) : 562.50
Core: 61 Top of Core Depth (m) : 556.50
Sect: 4 Top of Section Depth(m): 561.00
LITHOLOGY: BASALT;
Piece No. : PCES NO PCE NUMBERS ASSIGNED;
Texture : DOLERITIC, RARE PLAG PHENOS, FOUR GLASSY HORIZIONS
LOCATED AT 0CM, 50CM, 57CM, AND 75CM;
Structure : MASSIVE;
Comments : DARK GRAY, THIS INFORMATION IS FROM THE DETAILED
CORE DESCRIPTIONS LOCATED IN THE INITIAL REPORTS,
FOR FURTHER INFORMATION SEE THE PRELIMINARY
PETROGRAPHIC DESCRIPTIONS IN THE SITE 238 CHAPTER
OF THE INITIAL REPORTS;
Vesicles : VESICLES ROUND, COMMON, FILLED;
Phenocrysts: PLAGIOCLASE
RARE POORLY-DEVELOPED;
Groundmass : AUGITE
MODERATELY FRESH, ABUNDANT;
PLAGIOCLASE
CHLORITIZATION OBVIOUS;
Leg : 24 Top/Bottom Interval(mm): 1120/1500 Analyst:
Hole: 238 Sample Midpoint (m) : 567.50
Core: 62 Top of Core Depth (m) : 566.00
Sect: 1 Top of Section Depth(m): 567.12
LITHOLOGY: BASALT;
Piece No. : PCES NO PCE NUMBERS ASSIGNED;
Texture : GLASSY SEAMS;
Comments : DARK GRAY, THIS INFORMATION IS FROM THE DETAILED
CORE DESCRIPTIONS LOCATED IN THE INITIAL REPORTS,
FOR FURTHER INFORMATION SEE THE PRELIMINARY
PETROGRAPHIC DESCRIPTIONS IN THE SITE 238 CHAPTER
OF THE INITIAL REPORTS;
Leg : 24 Top/Bottom Interval(mm): 0/1500 Analyst:
Hole: 238 Sample Midpoint (m) : 569.00
Core: 62 Top of Core Depth (m) : 566.00
Sect: 2 Top of Section Depth(m): 567.50
LITHOLOGY: BASALT;
Piece No. : PCES NO PCE NUMBERS ASSIGNED;
Texture : RARE PLAG PHENOS, MEDIUM-GRAINED BASALT SEGMENTED
BY NUMEROUS GLASSY SEAMS OF VARIOUS ORIENTATION;
Structure : CHLORITE FILLS IRREGULAR SMALL CAVITIES AND RARE
ROUND CAVITIES;
Comments : DARK GRAY, THIS INFORMATION IS FROM THE DETAILED
CORE DESCRIPTIONS LOCATED IN THE INITIAL REPORTS,
FOR FURTHER INFORMATION SEE THE PRELIMINARY
PETROGRAPHIC DESCRIPTIONS IN THE SITE 238 CHAPTER
OF THE INITIAL REPORTS;
Phenocrysts: PLAGIOCLASE
RARE SUBHEDRAL PHENOS;
Groundmass : AUGITE
ABUNDANT, ALTERED IN VARYING DEGREE,
CHLORITIZATION COMMON IN GNDMASS;
Replacement: CHLORITE
Leg : 24 Top/Bottom Interval(mm): 0/1500 Analyst:
Hole: 238 Sample Midpoint (m) : 570.50
Core: 62 Top of Core Depth (m) : 566.00
Sect: 3 Top of Section Depth(m): 569.00
LITHOLOGY: MICRO-DOLERITE;
Piece No. : PCES NO PCE NUMBERS ASSIGNED;
Texture : PLAG PHENOS PRESENT, FIVE GLASSY HORIZONS
IN THIS SECTION LOCATED AT 5CM, 20CM, 50CM,
90CM, AND 130CM;
Structure : MASSIVE;
Comments : DARK GRAY, THIS INFORMATION IS FROM THE DETAILED
CORE DESCRIPTIONS LOCATED IN THE INITIAL REPORTS,
FOR FURTHER INFORMATION SEE THE PRELIMINARY
PETROGRAPHIC DESCRIPTIONS IN THE SITE 238 CHAPTER
OF THE INITIAL REPORTS;
Vesicles :
Location: Filling: CALCITE
ROUND TO IRREGULAR VESICLES FILLED WITH CALCITE;
Phenocrysts: PLAGIOCLASE
FRESH SUBHEDRAL PLAG PHENOS;
Groundmass : AUGITE
FRESH;
OLIVINE
MINOR;
PLAGIOCLASE
OPAQUE MINERALS
CHLORITIZATION OF PLAG AND AGGREGATES OF OPAQUES;
Replacement: CHLORITE
Leg : 24 Top/Bottom Interval(mm): 1210/1500 Analyst:
Hole: 238 Sample Midpoint (m) : 576.00
Core: 63 Top of Core Depth (m) : 574.50
Sect: 1 Top of Section Depth(m): 575.71
LITHOLOGY: BASALT;
Piece No. : PCES NO PCE NUMBERS ASSIGNED;
Comments : DARK GRAY, THIS INFORMATION IS FROM THE DETAILED
CORE DESCRIPTIONS LOCATED IN THE INITIAL REPORTS,
FOR FURTHER INFORMATION SEE THE PRELIMINARY
PETROGRAPHIC DESCRIPTIONS IN THE SITE 238 CHAPTER
OF THE INITIAL REPORTS;
Leg : 24 Top/Bottom Interval(mm): 740/1250 Analyst:
Hole: 238 Sample Midpoint (m) : 581.75
Core: 64 Top of Core Depth (m) : 580.50
Sect: 1 Top of Section Depth(m): 581.24
LITHOLOGY: BASALTIC BRECCIA;
Piece No. : PCES NO PCE NUMBERS ASSIGNED;
Comments : BRECCIA COMPOSED OF ANGULAR FRAGMENTS AND CHIPS OF
PALAGONITIZED GLASS AND LARGER FRAGMENTS OF BASALT,
CEMENTED BY CALCITE AND BY SOMEWHAT METAMORPHOSED
FINE-GRAINED CARB SEDIMENT, LOCALLY WITH VESTIGES
OF MICRO-FOSSILS, THE LARGER GRAINS OF CALCITE ARE I
CONTACT WITH GLASS FRAGMENTS;
Leg : 24 Top/Bottom Interval(mm): 1250/1500 Analyst:
Hole: 238 Sample Midpoint (m) : 582.00
Core: 64 Top of Core Depth (m) : 580.50
Sect: 1 Top of Section Depth(m): 581.75
LITHOLOGY: BASALT;
Piece No. : PCES NO PCE NUMBERS ASSIGNED;
Texture : PLAG PHENOS PRESENT, FINE-GRAINED,
GLASS IN GNDMASS, GLASSY HORIZON AT 150CM;
Structure : MASSIVE;
Alteration : CHLORITIZATION GENERAL;
Comments : DARK GRAY, IRON STAINING, THIS INFORMATION IS FROM
THE DETAILED CORE DESCRIPTIONS LOCATED IN THE
INITIAL REPORTS, FOR FURTHER INFORMATION SEE THE
PRELIMINARY PETROGRAPHIC DESCRIPTIONS IN THE SITE
238 CHAPTER OF THE INITIAL REPORTS;
Vesicles :
Location: Filling: CHLORITE
SMALL ROUND VESICLES FILLED WITH CHLORITE;
Phenocrysts: PLAGIOCLASE
SUBHEDRAL, ALTERED, IN AGGREGATES;
Groundmass : AUGITE
OPAQUE MINERALS
DUSTY AGGREGATES OF OPAQUES;
Replacement: CHLORITE
Leg : 24 Top/Bottom Interval(mm): 0/1500 Analyst:
Hole: 238 Sample Midpoint (m) : 583.50
Core: 64 Top of Core Depth (m) : 580.50
Sect: 2 Top of Section Depth(m): 582.00
LITHOLOGY: BASALT AND BASALTIC BRECCIA;
Piece No. : PCES NO PCE NUMBERS ASSIGNED;
Texture : FOUR MAJOR ZONES OF BRECCIA AT 10-50CM, 60-75CM,
85-105CM, AND 135-150CM, BASALT HAS GLASSY DRIFTS
IN GNDMASS, RARE PLAG PHENOS;
Structure : BASALT IS MASSIVE AND FRACTURED, IRREGULAR CAVITIES
FILLED WITH CALCITE;
Alteration : CONSIDERABLE ALTERATION, WITH CHLORITIZATION
GENERAL, CORROSION OF PLAG PHENOS, AND ALTERATION
OF AUGITE IN GNDMASS;
Comments : BASALT IS DARK GRAY, THE FOUR ZONES OF BRECCIA ARE
AT STEEP ANGLES TO THE HORIZONTAL, ANGULAR FRAGMENTS
OF BASALTIC GLASS, WITH ROUNDED PLAG PHENOS AND WITH
PALAGONITIZED RIMS, CEMENTED BY COARSELY AND
IRREGULARLY CRYSTALLIZED CALCITE IN VEINS OR BY
FINE-GRAINED, LITTLE-METAMORPHOSED CARB SEDIMENTS
THAT APPEAR TO BE INCLUSIONS;
THIS INFORMATION IS FROM THE DETAILED CORE
DESCRIPTIONS LOCATED IN THE INITIAL
REPORTS, FOR FURTHER INFORMATION SEE THE
PRELIMINARY PETROGRAPHIC DESCRIPTIONS IN
THE SITE 238 CHAPTER OF THE INITIAL REPORTS;
Vesicles :
Location: Filling: CHLORITE R
Shape : OUND
SMALL ROUND VESICLES EMPTY WITH RIMS OF CHLORITE
OR CALCITE OR FILLED WITH CHLORITE;
Phenocrysts: PLAGIOCLASE
RARE, CORRODED AGGREGATES;
Groundmass : AUGITE
ALTERED;
Replacement: CHLORITE
CALCITE
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