Leg : 24 Top/Bottom Interval(mm): 0/1100 Analyst:
Hole: 236 Sample Midpoint (m) : 305.10
Core: 33 Top of Core Depth (m) : 301.00
Sect: 3 Top of Section Depth(m): 304.00
LITHOLOGY: SEDIMENT (NANNO CHALK);
Leg : 24 Top/Bottom Interval(mm): 1100/1500 Analyst:
Hole: 236 Sample Midpoint (m) : 305.50
Core: 33 Top of Core Depth (m) : 301.00
Sect: 3 Top of Section Depth(m): 305.10
LITHOLOGY: BASALT;
Texture : PORPHYRITIC VESICULAR BASALT;
Comments : THIS INFORMATION IS FROM THE DETAILED CORE
DESCRIPTIONS LOCATED IN THE INITIAL REPORTS,
FOR FURTHER INFORMATION SEE THE PRELIMINARY
PETROGRAPHIC DESCRIPTIONS IN THE SITE 236 CHAPTER
OF THE INITIAL REPORTS;
Vesicles : VESICULAR BASALT + GREENISH GRAY TO FILLED;
Phenocrysts: PLAGIOCLASE
PHENOCRYSTS SPARSE AND CHIEFLY PLAGIOCLASE;
Leg : 24 Top/Bottom Interval(mm): 200/1500 Analyst:
Hole: 236 Sample Midpoint (m) : 308.00
Core: 34 Top of Core Depth (m) : 306.50
Sect: 1 Top of Section Depth(m): 306.70
LITHOLOGY: BASALT;
VOLCANIC BRECCIA;
Structure : VEINS OR SEAMS OF CARBONATE;
Alteration : FOR ALTERATION INFORMATION SEE CODE (O);
Comments : VOLCANIC BRECCIA WITH LARGE FRAGMENTS OF VARIOLITIC
AND PORPHYRITIC BASALT AND SMALLER FRAGMENTS OF
BASALTIC GLASS AND GREENISH ZONES OF ALTERED
GLASS CEMENTED BY SEAMS OF SLIGHTLY ALTERED TO
UNALTERED CALCAREOUS MICROFOSSIL AGGREGATES + VEINS
OR SEAMS OF CARBONATE + VARYING PROPORTIONS OF
BASALT-GLASS-CARBONATE (INTERVAL 30-120 CM),
BASALTIC GLASS (INTERVAL 120-130 CM), PORPHYRITIC
BASALT (MASSIVE) (INTERVAL 125-150 CM), THIS
INFORMATION IS FROM THE DETAILED CORE DESCRIPTIONS
LOCATED IN THE INITIAL REPORTS, FOR FURTHER
INFORMATION SEE THE PRELIMINARY PETROGRAPHIC
DESCRIPTIONS IN THE SITE 236 CHAPTER OF THE INITIAL
REPORTS;
Vesicles : VESICULAR BASALT;
Replacement: CARBONATE
VEINS OR SEAMS OF CARBONATE;
Leg : 24 Top/Bottom Interval(mm): 0/1500 Analyst:
Hole: 236 Sample Midpoint (m) : 309.50
Core: 34 Top of Core Depth (m) : 306.50
Sect: 2 Top of Section Depth(m): 308.00
LITHOLOGY: BASALT;
Texture : PORPHYRITIC BASALT;
Structure : MASSIVE BASALT WITH FILLED FRACTURES, EXTENSIVELY
FRACTURED BASALT;
Alteration : GLASSES HAVE FRESH PHENOCRYSTS, ALTERED
(OXIDIZED) BASALT HORIZON (110-120 CM);
Comments : EXTENSIVELY FRACTURED BASALT - UPPER PORTION HAS
BRECCIATED BASALT AND GLASS WITH CALCITE-CHLORITE
CEMENT + GLASSES HAVE FRESH PHENOS OR PLAG AND
AUGITE, THIS INFORMATION IS FROM THE DETAILED CORE
DESCRIPTIONS LOCATED IN THE INITIAL REPORTS, FOR
FURTHER INFORMATION SEE THE PRELIMINARY
PETROGRAPHIC DESCRIPTIONS IN THE SITE 236 CHAPTER
OF THE INITIAL REPORTS;
Vesicles : VESICULAR BASALT WITH SOME FILLED ROUND
VESICLES;
Phenocrysts: PLAGIOCLASE
GLASSES HAVE FRESH PHENOS OR PLAG AND AUGITE,
PLAG PHENOS IN A VARIOLITIC GROUNDMASS HIGH IN
AUGITE;
Groundmass : AUGITE
Replacement: CALCITE
CHLORITE
BRECCIATED BASALT AND GLASS WITH CALCITE-CHLORITE
CEMENT;
Leg : 24 Top/Bottom Interval(mm): 1350/1500 Analyst:
Hole: 236 Sample Midpoint (m) : 314.00
Core: 35 Top of Core Depth (m) : 312.50
Sect: 1 Top of Section Depth(m): 313.85
LITHOLOGY: BASALT;
Texture : VESICULAR PORPHYRITIC BASALT;
Comments : GREENISH GRAY VESICULAR PORPHYRITIC BASALT, THIS
INFORMATION IS FROM THE DETAILED CORE DESCRIPTIONS
LOCATED IN THE INITIAL REPORTS, FOR FURTHER
INFORMATION SEE THE PRELIMINARY PETROGRAPHIC
DESCRIPTIONS IN THE SITE 236 CHAPTER OF THE INITIAL
REPORTS;
Vesicles : VESICULAR PORPHYRITIC BASALT, VESICLES FILLED;
Phenocrysts: AUGITE
PLAGIOCLASE
PHENOS OF AUGITE AND PLAG IN AGGREGATES;
Leg : 24 Top/Bottom Interval(mm): 0/1500 Analyst:
Hole: 236 Sample Midpoint (m) : 315.50
Core: 35 Top of Core Depth (m) : 312.50
Sect: 2 Top of Section Depth(m): 314.00
LITHOLOGY: BASALT;
Texture : PORPHYRITIC BASALT, BRECCIATED GLASS CEMENTED BY
CALCITE-CHLORITE (INTERVAL 10-25 CM), GLASSY
BRECCIA WITH CHLORITE CEMENT (INTERVAL 50-75 CM),
BRECCIATED BASALT AND GLASS WITH CHLORITE CEMENT
(INTERVAL 120-145 CM);
Structure : FRACTURED BASALT VEINS INCRUSTED WITH CHLORITE;
Alteration : PORPHYRITIC BASALT WITH ALTERATION TO CHLORITE
+ CALCITE LOCALLY;
Comments : THIS INFORMATION IS FROM THE DETAILED CORE
DESCRIPTIONS LOCATED IN THE INITIAL REPORTS, FOR
FURTHER INFORMATION SEE THE PRELIMINARY
PETROGRAPHIC DESCRIPTIONS IN THE SITE 236 CHAPTER
OF THE INITIAL REPORTS;
Vesicles :
Location: Filling:
Shape : ROUND
ABUNDANT ROUND VESICLES FILLED;
Phenocrysts: PLAGIOCLASE
PLAG PHENOS CORRODED - CHLORITIC - AUGITE;
Groundmass : CHLORITE
CHLORITE ABUNDANT IN VARIOLITIC GROUNDMASS;
Replacement: CHLORITE
CALCITE
BRECCIATED GLASS CEMENTED BY CALCITE-CHLORITE;
Leg : 24 Top/Bottom Interval(mm): 0/1500 Analyst:
Hole: 236 Sample Midpoint (m) : 317.00
Core: 35 Top of Core Depth (m) : 312.50
Sect: 3 Top of Section Depth(m): 315.50
LITHOLOGY: BASALT;
Texture : BRECCIATED GLASS, FRACTURED PORPHYRITIC VARIOLITIC
BASALT;
Structure : FRACTURED BASALT, FRACTURED PORPHYRITIC VARIOLITIC
BASALT, VEINS OF CHLORITE AND PARTIALLY PRESERVED
CALCAREOUS MICROFOSSILS, CARBONATE IN VEINS ALSO AND
SOMETIMES AS THE PRINCIPAL VEIN MATERIAL;
Alteration : PLAG PHENOS REPLACED BY ANALCITE WITH GROUNDMASS
CHLORITIC (SEE INTERVAL 50-100 CM), PLAG PHENOS
SOMEWHAT CHLORITIZED + AUGITE PHENOS FRESHER
(SEE INTERVAL 100-150 CM);
Comments : VEINS OF CHLORITE AND PARTIALLY PRESERVED
CALCAREOUS MICROFOSSILS, THIS INFORMATION IS FROM
THE DETAILED CORE DESCRIPTIONS LOCATED IN THE
INITIAL REPORTS, FOR FURTHER INFORMATION SEE THE
PRELIMINARY PETROGRAPHIC DESCRIPTIONS IN THE SITE
236 CHAPTER OF THE INITIAL REPORTS;
Vesicles :
Location: Filling: CHLORITE
LARGE VESICLES FILLED WITH FIBROUS CHLORITE;
Phenocrysts: PLAGIOCLASE
PLAG PHENOS REPLACED BY ANALCITE WITH GROUNDMASS
CHLORITIC (SEE INTERVAL 50-100 CM), PLAG PHENOS
SOMEWHAT CHLORITIZED (SEE INTERVAL 50-150 CM);
AUGITE
AUGITE PHENOS FRESHER (SEE INTERVAL 100-150 CM);
Groundmass : AUGITE
AUGITE ABUNDANT IN VARIOLITIC GROUNDMASS;
Replacement: ANALCITE
Minerals Replaced: PLAG
PLAG PHENOS REPLACED BY ANALCITE;
CHLORITE
IN VESICLES AND VEINS;
CARBONATE
CARBONATE IN VEINS;
Leg : 24 Top/Bottom Interval(mm): 0/ 0 Analyst:
Hole: 236 Sample Midpoint (m) : 317.10
Core: 35 Top of Core Depth (m) : 312.50
Sect: CC Top of Section Depth(m): 317.10
LITHOLOGY: BASALT;
Comments : FOR MORE INFORMATION SEE CORE FORM AND LITHOLOGIC
DESCRIPTION IN THE INITIAL REPORTS;
Leg : 24 Top/Bottom Interval(mm): 0/1500 Analyst:
Hole: 236 Sample Midpoint (m) : 323.50
Core: 36 Top of Core Depth (m) : 322.00
Sect: 1 Top of Section Depth(m): 322.00
LITHOLOGY: BASALT;
Texture : MASSIVE PORPHYRITIC VARIOLITIC BASALT, GLASSY
HORIZON (INTERVAL 105-110 CM);
Structure : MASSIVE, CHLORITE AS FRACTURE FILLINGS;
Alteration : CHLORITE REPLACING PLAG;
Comments : GREENISH GRAY BASALT, THIS INFORMATION IS FROM
THE DETAILED CORE DESCRIPTIONS LOCATED IN THE
INITIAL REPORTS, FOR FURTHER INFORMATION SEE THE
PRELIMINARY PETROGRAPHIC DESCRIPTIONS IN THE SITE
236 CHAPTER OF THE INITIAL REPORTS;
Vesicles : VESICLES FILLED;
Phenocrysts: PLAGIOCLASE
AUGITE
AUGITE AND PLAGIOCLASE PHENOCRYSTS;
Groundmass : AUGITE
AUGITE ABUNDANT IN GROUNDMASS;
CHLORITE
AGGREGATES IN GROUNDMASS AND AS FRACTURE FILLINGS;
Replacement: CHLORITE
Minerals Replaced: PLAG
CHLORITE REPLACING PLAGIOCLASE;
Leg : 24 Top/Bottom Interval(mm): 0/1500 Analyst:
Hole: 236 Sample Midpoint (m) : 325.00
Core: 36 Top of Core Depth (m) : 322.00
Sect: 2 Top of Section Depth(m): 323.50
LITHOLOGY: BASALT;
Texture : MASSIVE PORPHYRITIC BASALT, GLASSY ZONE (INTERVAL 0-
5 CM), GLASSY HORIZON (INTERVAL 107-119 CM);
Structure : FRACTURED MASSIVE PORPHYRITIC BASALT, CHLORITE IN
FRACTURES;
Alteration : PHENOCRYSTS CHLORITIZED;
Comments : GREENISH GRAY AT TOP BECOMING GRAY-BLACK AT BASE,
THIS INFORMATION IS FROM THE DETAILED CORE
DESCRIPTIONS LOCATED IN THE INITIAL REPORTS,
FOR FURTHER INFORMATION SEE THE PRELIMINARY
PETROGRAPHIC DESCRIPTIONS IN THE SITE 236 CHAPTER
OF THE INITIAL REPORTS;
Vesicles :
Location: Filling: CHLORITE
Shape : ROUND
CHLORITE FILLING SMALL ROUND VESICLES;
Phenocrysts: PLAGIOCLASE
AUGITE
LARGE PLAGIOCLASE PHENOS AND SMALL AUGITE
PHENOS, PLAG PHENOCRYSTS CHLORITIZED;
Groundmass : CHLORITE
PYROXENE
CHLORITE AGGREGATES IN GROUNDMASS WHICH IS HIGH
IN PYROXENE;
Replacement: CHLORITE
CHLORITE IN FRACTURES AND VESICLES, CHLORITE
AGGREGATES IN GROUNDMASS, PLAG PHENOS
CHLORITIZED;
Leg : 24 Top/Bottom Interval(mm): 0/1500 Analyst:
Hole: 236 Sample Midpoint (m) : 327.50
Core: 37 Top of Core Depth (m) : 326.00
Sect: 1 Top of Section Depth(m): 326.00
LITHOLOGY: BASALT;
Texture : FINE GRAINED VARIOLITIC BASALT WITH ALTERED PHENOS
(SEE INTERVAL 0-90 CM), GLASSY HORIZON WITH GRAYISH
GREEN TO BROWN SPHERULITIC GLASS WITH VERY FRESH
PHENOCRYSTS OF PLAGIOCLASE AND AUGITE (INTERVAL 90-
97 CM), FINELY VARIOLITIC GROUNDMASS WITH
ABUNDANT AUGITE (SEE INTERVAL 100-150 CM);
Structure : FRACTURED VARIOLITIC BASALT (INTERVAL 0-90 CM),
BASALT MASSIVE EXCEPT FOR FRACTURES (SEE INTERVAL 0-
90 CM), SOME CARBONATE CRACK OR VEIN FILLINGS
BETWEEN RIMS OR BORDERS OF FINER GRAINED CHLORITE
(SEE INTERVAL 0-90 CM), MASSIVE PORPHYRITIC BASALT
(INTERVAL 100-150 CM);
Alteration : VARIOLITIC BASALT WITH ALTERED PHENOCRYSTS
(SEE INTERVAL 0-90 CM), CHLORITE (GREEN) AND
FIBROUS GRAY-GREEN AS ALTERATION AND VEIN AND
VESICLE FILLING (SEE INTERVAL 0-90 CM), PLAG
ALTERED IN PART OF ANALCITE (SEE INTERVAL 0-90
CM), GLASSY HORIZON WITH GLASS WITH VERY FRESH
PHENOCRYSTS OF PLAGIOCLASE AND AUGITE (SEE
INTERVAL 90-97 CM);
Comments : THIS INFORMATION IS FROM THE DETAILED CORE
DESCRIPTIONS LOCATED IN THE INITIAL REPORTS, FOR
FURTHER INFORMATION SEE THE PRELIMINARY
PETROGRAPHIC DESCRIPTIONS IN THE SITE 236 CHAPTER
OF THE INITIAL REPORTS;
Vesicles :
Location: Filling: CHLORITE
Shape : ROUND
VESICLES ROUND AND FILLED WITH CHLORITE;
Phenocrysts: VARIOLITIC BASALT WITH ALTERED PHENOCRYSTS
(SEE INTERVAL 0-90 CM);
PLAGIOCLASE
AUGITE
GLASSY HORIZON WITH VERY FRESH PHENOCRYSTS OF
PLAG AND AUGITE (SEE INTERVAL 90-97 CM), PLAG
PHENOCRYSTS CORRODED WITH FINER GRAINED AUGITE
LESS SO (SEE INTERVAL 97-150 CM);
Replacement: CHLORITE
CARBONATE
CHLORITE AND CARBONATE IN VEINS, CHLORITE IN
VESICLES TOO;
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