Leg : 57 Top/Bottom Interval(mm): 0/ 760 Analyst: Murdmaa, I
Hole: 439 Sample Midpoint (m) : 1098.76
Core: 32 Top of Core Depth (m) : 1096.50
Sect: 2 Top of Section Depth(m): 1098.00
LITHOLOGY: CONGLOMERATE;
Texture : ANGULAR COARSE GRAINED SAND TO GRANULAR MATRIX,
CONGLOMERATE WITH MUDSTONE - SHALE CLASTS,
PHENO SIZE INCREASES DOWNWARD;
Alteration : MATRIX HIGHLY ALTERED;
Comments : OVERALL COLOR OF (5 G 5/1), ANGULAR COARSE GRAINED
SAND TO GRANULAR MATRIX, CONGLOMERATE (DISTURBED BY
DRILLING) WITH MUDSTONE + SHALE CLASTS + PEBBLES AND
GRANULES OF RHYOLITE AND OTHER IGNEOUS ROCKS, REFER
TO INITIAL REPORTS FOR ADDITIONAL INFORMATION;
Phenocrysts: QUARTZ
FELDSPAR
HORNBLENDE
BIOTITE
PHENOS OF QUARTZ + FELDSPAR + BIOTITE +
HORNBLENDE;
Leg : 57 Top/Bottom Interval(mm): 0/ 0 Analyst: Murdmaa, I
Hole: 439 Sample Midpoint (m) : 1098.85
Core: 32 Top of Core Depth (m) : 1096.50
Sect: CC Top of Section Depth(m): 1098.85
LITHOLOGY: CONGLOMERATE;
Texture : NUMEROUS FRAGMENTS OF SIMILAR VOLCANIC ROCKS BOTH
APHANITIC AND WITH PHENOCRYSTS;
Comments : SEE CORE FORM AND LITHOLOGIC DESCRIPTION IN THE
INITIAL REPORTS FOR MORE INFORMATION;
Leg : 57 Top/Bottom Interval(mm): 0/1500 Analyst: Fujioka, K.
Hole: 439 Sample Midpoint (m) : 1107.50
Core: 33 Top of Core Depth (m) : 1106.00
Sect: 1 Top of Section Depth(m): 1106.00
LITHOLOGY: BRECCIA;
RHYOLITE;
Texture : SLIGHTLY FINE GRAINED RHYOLITE, PORPHYRITIC TEXTURE;
Alteration : RHYOLITE RATHER FRESH, MODERATELY ALTERED IN
INTERVAL (111-150 CM), MATRIX MAY BE ALTERED
COMPLETELY TO SOME METAMORPHIC MINERALS;
Comments : DRILLING BISCUITS (INTERVAL 0-19 CM + INTERVAL 35-
50 CM), MEDIUM BLUISH GREY OF SLIGHTLY FINE GRAINED
RHYOLITE, A CHERT PEBBLE OF 20 MM AT 90 CM, DARK
GREEN DACITE AT 110 CM, ALL THE BLOCKS MAY BE
THOUGHT OF AS VARIOUS SIZES OF PEBBLES;
Alteration : PLAG IS ALTERED TO FINE GRAINED GREEN MINERAL;
Phenocrysts:
Size(mm): TO 5.0
PHENOS RATHER LARGE UP TO 5.0 MM;
PLAGIOCLASE
PLAG IS ALTERED TO FINE GRAINED GREEN MINERAL;
QUARTZ
Leg : 57 Top/Bottom Interval(mm): 0/ 200 Analyst: Fujioka, K.
Hole: 439 Sample Midpoint (m) : 1107.61
Core: 33 Top of Core Depth (m) : 1106.00
Sect: CC Top of Section Depth(m): 1107.51
LITHOLOGY: BRECCIA;
Comments : DRILLING BISCUITS, RHYOLITE AND SILTSTONE, PEBBLES
ROUND, FOR MORE INFORMATION SEE CORE FORM AND
LITHOLOGIC DESCRIPTION IN THE INITIAL REPORTS;
Leg : 57 Top/Bottom Interval(mm): 0/1500 Analyst: Murdmaa, I
Hole: 439 Sample Midpoint (m) : 1117.00
Core: 34 Top of Core Depth (m) : 1115.50
Sect: 1 Top of Section Depth(m): 1115.50
LITHOLOGY: BRECCIA;
Texture : INTERBEDDED BRECCIAS (GRANULAR TO PEBBLE),
SUBANGULAR VOLCANIC APHANITIC DARK GREENISH GRAY
(5 G 3/1) CLAST AT 4 CM, POORLY SORTED (N 2) TO
(N 4) BRECCIA OF SAND SILT MATRIX WITH ANGULAR TO
ROUNDED FRAGMENTS OF (5 G 6/1) AND (N 2) APHANITIC
ROCKS OF MUDSTONE + POSSIBLY VOLCANICS (INTERVAL
(7-27 CM), DISTURBED BY DRILLING BUT INTERVAL
CONTAINS NUMEROUS ANGULAR 2-3 CM AND SMALLER CLASTS
MOSTLY DARK GRAY BLACK CLAYSTONE (INTERVAL 110-127
CM), MEDIUM TO FINE GRAINED PORPHYRITIC RHYOLITE
AND/OR DACITE (INTERVAL 127-150 CM);
Alteration : PLAGIOCLASE IS ALTERED TO GREEN MINERAL + ALTERED
MATRIX (INTERVAL 127-150 CM);
Comments : VERY SHARP CONTACT AT 27 CM, DRILLING BISCUITS
(BRECCIA) SAME MATERIALS AS ABOVE + PROBABLY WAS A
CONTINOUS UNIT (INTERVAL 67-97 CM), SEE CORE FORM
AND LITHOLOGIC DESCRIPTION IN THE INITIAL REPORTS
FOR MORE INFORMATION;
Phenocrysts: PLAGIOCLASE
RARE PHENOS AT TOP OF SECTION, PLAG IS ALTERED
TO GREEN MINERAL;
Leg : 57 Top/Bottom Interval(mm): 0/1500 Analyst: Fujioka, K.
Hole: 439 Sample Midpoint (m) : 1118.50
Core: 34 Top of Core Depth (m) : 1115.50
Sect: 2 Top of Section Depth(m): 1117.00
LITHOLOGY: BRECCIA;
Texture : DRILLING BISCUITS (INTERVAL 40-80 CM), BRECCIA
ORIGINALLY IN CLAY/SAND (POORLY SORTED) MATRIX
SOMEWHAT MODERATELY BROKEN BY DRILLING (CLAST
SUPPORTED) + ABUNDANT ANGULAR FRAGMENTS AVERAGING
4.0 MM (INTERVAL 40-80 CM), SILT TO SAND - GRANULES
WITH REVERSE GRADING OF UPPER PART OF INTERVAL BEING
SLIGHTLY COARSER GRAINED AND BECOMING FINER TOWARD
LOWER PART (INTERVAL 82-95 CM);
Alteration : PLAGIOCLASE IS HIGHLY ALTERED TO SMALL GREEN
MINERALS, PLAG PHENOS AND MATRIX ARE COMPLETELY
ALTERED;
Comments : SAME AS INTERVAL (126-150 CM) OF CORE 34 SECTION 1,
BOULDER OF 65 CM THICK, DUSKY GREEN (5 G 3/2 TO
10 G Y 3/2) HOMOGENEOUS AND PORPHYRITIC (INTERVAL
95-115 CM), SLIGHTLY DARKER COMPARED TO ABOVE UNIT
+ MINEROLOGY AND TEXTURE IS SAME AND QUITE
HOMOGENEOUS, FOR MORE INFORMATION SEE CORE FORM
AND LITHOLOGIC DESCRIPTION IN THE INITIAL REPORTS;
Phenocrysts: PLAGIOCLASE
PLAG IS HIGHLY ALTERED TO SMALL GREEN MINERALS
(INTERVAL 95-115 CM), PLAG PHENOS AND MATRIX
ARE COMPLETELY ALTERED (INTERVAL 115-150 CM);
Leg : 57 Top/Bottom Interval(mm): 0/ 800 Analyst: Fujioka, K.
Hole: 439 Sample Midpoint (m) : 1119.30
Core: 34 Top of Core Depth (m) : 1115.50
Sect: 3 Top of Section Depth(m): 1118.50
LITHOLOGY: BRECCIA;
RHYOLITE;
Texture : BRECCIA ANGULAR TO SUBANGULAR RHYOLITE PEBBLES +
A 4 CM RHYOLITE PEBBLE (INTERVAL 10-44 CM), BRECCIA
UNIT - MUD TO CLAST SUPPORTED + DARK GRAY TO BLACK
CLASTS + IGNEOUS CLASTS THAT ARE UP TO 5.0 CM AND
AVERAGING 1.0 CM (INTERVAL 10-44 CM), THREE
INDIVIDUAL COBBLES TO BOULDERS OF BLUISH GRAY FINE
GRAINED RHYOLITE WITH NO FLOW TEXTURE RECOGNIZED
(INTERVAL 44-72 CM), CLASTS (INTERVAL 72-79 CM),
Comments : SAME UNIT AS INTERVAL (100-150 CM) OF CORE 34
SECTION 2, GOOD EVIDENCE FOR BRECCIA AND VOLCANICS
AS BOULDERS, FOR MORE INFORMATION SEE CORE FORM
AND LITHOLOGIC DESCRIPTION IN THE INITIAL REPORTS;
Leg : 57 Top/Bottom Interval(mm): 0/ 0 Analyst: Fujioka, K.
Hole: 439 Sample Midpoint (m) : 1119.42
Core: 34 Top of Core Depth (m) : 1115.50
Sect: CC Top of Section Depth(m): 1119.42
LITHOLOGY: BRECCIA;
Texture : DRILLING BISCUITS, BRECCIA FRAGMENTS OF IGNEOUS
AND SAME AS ABOVE WITH SHAPE RANGING FROM ANGULAR TO
SUBANGULAR AND SIZE UP TO 1.5 CM, AN ANGULAR IGNEOUS
CLAST (SAME AS ABOVE);
Leg : 57 Top/Bottom Interval(mm): 0/1500 Analyst: Murdmaa, I
Hole: 439 Sample Midpoint (m) : 1126.50
Core: 35 Top of Core Depth (m) : 1125.00
Sect: 1 Top of Section Depth(m): 1125.00
LITHOLOGY: BRECCIA;
Texture : BRECCIA UNIT IS INDURATED IN PART + MATRIX SUPPORTED
CLASTS OF UP TO 1.5 CM AND ARE ANGULAR TO
SUBANGULAR (INTERVAL 0-51 CM), IGNEOUS PORPHYRITIC
CLAST (1.5 CM) AT 46 CM, GREENISH GRAY (5 G 6/1)
PORPHYRITIC IGNEOUS ROCK (AS BOULDER) (INTERVAL 51-
76 CM), BRECCIA INTERVAL (76-136 CM) HAS ANGULAR
CLASTS UP TO 5.0 CM (IGNEOUS PORPHYRITIC CLASTS) +
5 G 6/1 CLAY MATRIX, BOULDER - (5 G 2/1) GREENISH
TO BLACK PORPHYRITIC IGNEOUS ROCK TO APHANITIC
GROUNDMASS WITH SMALL CLOTS AND LATHS OF AMPHIBOLE
AND ALTERED FELDSPARS (INTERVAL 136-150 CM);
Alteration : ALTERED BOULDER WITH ALTERED FELDSPARS (INTERVAL
136-150 CM);
Comments : GREENISH GRAY CLAY MATRIX (INTERVAL 0-51 CM),
(5 G 6/1) GREENISH GRAY IGNEOUS ROCK (INTERVAL 51-
76 CM), (5 G 6/1) CLAY MATRIX (INTERVAL 76-136 CM);
Phenocrysts: AMPHIBOLE
Size(mm): TO 3.0
FELDSPAR
Size(mm): TO 3.
FELDSPAR AND AMPHIBOLE PHENOS ARE UP TO 3.0 MM
AND AVERAGE 1.5 MM (INTERVAL 51-76 CM),
DIFFERS FROM BOULDER ABOVE IN THAT IT HAS FEWER
AND SMALLER FELDSPAR AND AMPHIBOLE PHENOS
INTERVAL (76-136 CM);
Leg : 57 Top/Bottom Interval(mm): 0/ 300 Analyst: Murdmaa, I
Hole: 439 Sample Midpoint (m) : 1126.80
Core: 35 Top of Core Depth (m) : 1125.00
Sect: 2 Top of Section Depth(m): 1126.50
LITHOLOGY: BRECCIA;
Texture : BRECCIA UNIT AS BEFORE WITH MAXIMUM PEBBLE OF 3.0 CM
Comments : FOR MORE INFORMATION SEE CORE FORM AND
LITHOLOGIC DESCRIPTION IN THE INITIAL REPORTS;
Leg : 57 Top/Bottom Interval(mm): 0/ 0 Analyst: Murdmaa, I
Hole: 439 Sample Midpoint (m) : 1126.90
Core: 35 Top of Core Depth (m) : 1125.00
Sect: CC Top of Section Depth(m): 1126.90
LITHOLOGY: BRECCIA;
Texture : SMALL PHENOCRYSTS WITH APHANITIC GROUNDMASS;
Comments : A (5 B 6/1) PEBBLE WITH (N 4) STREAKS SUGGESTING
A FLOW-BANDED VOLCANIC (QUESTIONABLE RHYOLITE),
FOR MORE INFORMATION SEE CORE FORM AND LITHOLOGIC
DESCRIPTION IN THE INITIAL REPORTS;
Leg : 57 Top/Bottom Interval(mm): 0/1500 Analyst: Murdmaa, I
Hole: 439 Sample Midpoint (m) : 1136.00
Core: 36 Top of Core Depth (m) : 1134.50
Sect: 1 Top of Section Depth(m): 1134.50
LITHOLOGY: BRECCIA;
Texture : PORPHYRITIC IGNEOUS BOULDER (INTERVAL 0-40 CM),
BRECCIA UNIT (INTERVAL 40-52 CM), BOULDER AS ABOVE
(INTERVAL 52-70 CM), BRECCIA UNIT (INTERVAL 70-150
CM), CLASTS IN (INTERVAL 80-85 CM), SANDSTONE CLAST
IN (INTERVAL 110-115 CM), SLIGHTLY COARSER GRAINED
WITH FELTED GROUNDMASS (INTERVAL 140-150 CM);
Comments : GREENISH BLACK (5 G 2/1) PORPHYRITIC IGNEOUS
BOULDER (INTERVAL 0-40 CM), A GREENISH GRAY 5 G 7/1
TUFF PEBBLE (3 X 5 CM) (INTERVAL 122-128 CM),
FOR MORE INFORMATION SEE CORE FORM AND LITHOLOGIC
DESCRIPTION IN THE INTIAL REPORTS;
Phenocrysts: FELDSPAR
AMPHIBOLE
PHENOS OF FELDSPAR AND MAFICS (AMPHIBOLE) IN
(INTERVAL 140-150 CM)
Leg : 57 Top/Bottom Interval(mm): 0/ 870 Analyst: Murdmaa, I
Hole: 439 Sample Midpoint (m) : 1136.87
Core: 36 Top of Core Depth (m) : 1134.50
Sect: 2 Top of Section Depth(m): 1136.00
LITHOLOGY: BRECCIA;
Texture : BRECCIA - CONGLOMERATE (INTERVAL 0-60 CM), ANGULAR
BROWNISH GRAY (5 YR 4/1) CLAST AT 47 CM;
Comments : SHARP PRESERVED CONTACT AT 60 CM BETWEEN BRECCIA
AND BOULDER INTERVAL, BROWNISH GRAY (5 YR 4/1)
CLAST AT 47 CM, FOR MORE INFORMATION ON CORE 36 SEE
CORE FORM AND LITHOLOGIC DESCRIPTION IN THE INITIAL
REPORTS;
Leg : 57 Top/Bottom Interval(mm): 0/ 0 Analyst: Murdmaa, I
Hole: 439 Sample Midpoint (m) : 1136.97
Core: 36 Top of Core Depth (m) : 1134.50
Sect: CC Top of Section Depth(m): 1136.97
LITHOLOGY: BRECCIA;
Texture : GREENISH BLACK (5 G 2/1) PORPHYRITIC IGNEOUS
BOULDER 15 CM LONG, BROKEN UP CLAST OR BED OF
BROWN BLACK (5 YR 2/1) SILTY CLAYSTONE WITH
LAMINAE OF QUARTZ + SILT + FINE GRAINED SAND + WELL
INDURATED (INTERVAL 20 CM LONG);
Comments : FOR MORE INFORMATION ON CORE 36 SEE CORE FORM AND
LITHOLOGIC DESCRIPTION IN THE INITIAL REPORTS;
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