Leg : 43 Top/Bottom Interval(mm): 30/ 530 Analyst: Galehouse, J.
Hole: 382 Sample Midpoint (m) : 385.33
Core: 19 Top of Core Depth (m) : 383.30
Sect: 2 Top of Section Depth(m): 384.83
LITHOLOGY: SEDIMENT;
Leg : 43 Top/Bottom Interval(mm): 540/ 760 Analyst: Galehouse, J.
Hole: 382 Sample Midpoint (m) : 385.56
Core: 19 Top of Core Depth (m) : 383.30
Sect: 2 Top of Section Depth(m): 385.34
LITHOLOGY: VOLCANICLASTIC BRECCIA;
Texture : MOST CLASTS ARE ANGULAR,MOST ARE BASALT BUT SOME
ARE SEDIMENTARY,AVERAGE CLAST SIZE 3MM DIAMETER,
LARGEST IS 5MMX1CM,SHARP BASAL CONTACT;
Comments : BASIC COLOR IS 5YR3/3 (DARK REDDISH BROWN BUT
BRECCIA HAVE A SPECKLED APPEARANCE DUE TO DIFFERENT
CLAST COLOR AND SIZE,SOME OF THE MORE COMMON CLAST
COLORS ARE: 5YR5/6 (YELLOWISH RED), 5YR4/3 (REDDISH
BROWN), 5YR5/2 (REDDISH GRAY (PROBABLY SEDIMENTARY),
7.5YR6/4 (LIGHT BROWN), THIS COLOR DESCRIPTION HOLDS
FOR ALL THE BRECCIAS IN CORE 19; NO OBVIOUS GRADING
BUT SOME INTERVALS ARE COARSER THAN OTHERS BUT NO
"CONTACTS" BETWEEN THESE INTERVALS;
Leg : 43 Top/Bottom Interval(mm): 760/ 840 Analyst: Galehouse, J.
Hole: 382 Sample Midpoint (m) : 385.64
Core: 19 Top of Core Depth (m) : 383.30
Sect: 2 Top of Section Depth(m): 385.56
LITHOLOGY: SEDIMENT;
Leg : 43 Top/Bottom Interval(mm): 840/1300 Analyst: Galehouse, J.
Hole: 382 Sample Midpoint (m) : 386.10
Core: 19 Top of Core Depth (m) : 383.30
Sect: 2 Top of Section Depth(m): 385.64
LITHOLOGY: VOLCANICLASTIC BRECCIA;
Texture : CLASTS ARE ANGULAR AND MOST ARE BASALTIC ORIGIN,
ONE CLAST IS ABOUT 2-3MM DIAM,LARGEST CLAST IS
3MM X 1CM;
Comments : GRADATIONAL BASAL CONTACT;
Leg : 43 Top/Bottom Interval(mm): 1360/1500 Analyst: Galehouse, J.
Hole: 382 Sample Midpoint (m) : 386.30
Core: 19 Top of Core Depth (m) : 383.30
Sect: 2 Top of Section Depth(m): 386.16
LITHOLOGY: VOLCANICLASTIC BRECCIA;
Comments : INTERCALATED WITH VARIOUS SEDIMENTARY TYPES -MAINLY
SANDSTONE AND SILTSTONE,ALL CONTACT GRADATIONAL OR
INDISTINCT,OVERALL COLOR IS 7.5YR4/2 (DARK BROWN),
AT 132 CM IS AN AREA (NOT A BED) MAINLY COMPOSED OF
WHITE CALCITE PARTICLES TO 1MM IN DIAMETER,
PART OF SAME BRECCIA UNIT THAT CONTINUES INTO 19-3,
CLASTS AT 141-142CM ARE MUCH COARSER THAN USUAL-
AVERAGE DIAMETER IS 5-6MM;
Leg : 43 Top/Bottom Interval(mm): 0/ 370 Analyst: Galehouse, J.
Hole: 382 Sample Midpoint (m) : 386.67
Core: 19 Top of Core Depth (m) : 383.30
Sect: 3 Top of Section Depth(m): 386.30
LITHOLOGY: VOLCANICLASTIC BRECCIA;
SAME AS CORE 19-2 136-150;
Texture : AVERAGE CLAST IS 2MM, AT 36-37CM FINER-GRAINED THAN
REST OF BRECCIA,ALL BRECCIAS IN CORE 19 APPEAR TO
BE CALCITE-CEMENTED,MAX CLAST 4MM X 8MM;
Comments : SAME AS BRECIAS IN CORE 19-2,NO OBVIOUS GRADING,
DENDRITES ALONG SHARP BASAL CONTACT;
Replacement: CALCITE
WHITE TO LIGHT GREY;
Leg : 43 Top/Bottom Interval(mm): 370/ 410 Analyst: Galehouse, J.
Hole: 382 Sample Midpoint (m) : 386.71
Core: 19 Top of Core Depth (m) : 383.30
Sect: 3 Top of Section Depth(m): 386.67
LITHOLOGY: SEDIMENT;
INOCERAMUS PLATE AT 38CM;
Leg : 43 Top/Bottom Interval(mm): 410/ 460 Analyst: Galehouse, J.
Hole: 382 Sample Midpoint (m) : 386.76
Core: 19 Top of Core Depth (m) : 383.30
Sect: 3 Top of Section Depth(m): 386.71
LITHOLOGY: VOLCANICLASTIC BRECCIA;
SAME GENERAL DESCRIPTION AS OTHER BRECCIAS OF CORE
19;
Texture : AVERAGE CLAST SIZE NEAR TOP IS 3-4MM DIAM, AT BOTTOM
IS 1-2MM DIAM;
Comments : SHARP UPPER CONTACT,GRADATIONAL LOWER CONTACT
(INCLINED AT 10 DEGREES),REVERSELY GRADED;
Leg : 43 Top/Bottom Interval(mm): 460/ 480 Analyst: Galehouse, J.
Hole: 382 Sample Midpoint (m) : 386.78
Core: 19 Top of Core Depth (m) : 383.30
Sect: 3 Top of Section Depth(m): 386.76
LITHOLOGY: SEDIMENT;
Leg : 43 Top/Bottom Interval(mm): 480/1450 Analyst: Galehouse, J.
Hole: 382 Sample Midpoint (m) : 387.75
Core: 19 Top of Core Depth (m) : 383.30
Sect: 3 Top of Section Depth(m): 386.78
LITHOLOGY: VOLCANICLASTIC BRECCIA;
SAME GENERAL DESCRIPTION AS FOR OTHER CORE 19
BRECCIAS;
Texture : MOST CLASTS ANGULAR,SOME SUBANGULAR,A FEW ROUNDED,
INTERVAL MAY BE CRUDELY GRADED,MAX CLAST IS 1CMX2CM,
AVERAGE CLAST IS 3-4MM DIAM (COARSER THAN PRECEDING
BRECCIAS IN CORE 19;
Leg : 43 Top/Bottom Interval(mm): 30/ 90 Analyst: Galehouse, J.
Hole: 382 Sample Midpoint (m) : 387.89
Core: 19 Top of Core Depth (m) : 383.30
Sect: 4 Top of Section Depth(m): 387.83
LITHOLOGY: SEDIMENT;
Leg : 43 Top/Bottom Interval(mm): 90/ 850 Analyst: Galehouse, J.
Hole: 382 Sample Midpoint (m) : 388.65
Core: 19 Top of Core Depth (m) : 383.30
Sect: 4 Top of Section Depth(m): 387.89
LITHOLOGY: VOLCANICLASTIC BRECCIA;
Texture : FINER GRAINED FROM 9-26CM,CRUDELY GRADED,MAX
CLAST <.6MMX1CM,AVERAGE CLAST <.2MM;
Comments : MUCH CROSS-BEDDING OCCURS IN THIS INTERVAL WITH DIPS
UP TO 20 DEGREES (BEAUTIFULLY SHOWN IN PCE FROM
34-53CM) AT ABOUT 36-40CM,BASIC COLOR IS 5YR4/3
(REDDISH BROWN),CLAST COLORS AS IN CORE 19-2;
Leg : 43 Top/Bottom Interval(mm): 850/ 950 Analyst: Galehouse, J.
Hole: 382 Sample Midpoint (m) : 388.75
Core: 19 Top of Core Depth (m) : 383.30
Sect: 4 Top of Section Depth(m): 388.65
LITHOLOGY: SEDIMENT;
Leg : 43 Top/Bottom Interval(mm): 950/1500 Analyst: Galehouse, J.
Hole: 382 Sample Midpoint (m) : 389.30
Core: 19 Top of Core Depth (m) : 383.30
Sect: 4 Top of Section Depth(m): 388.75
LITHOLOGY: VOLCANICLASTIC BRECCIA;
Texture : AVERAGE CLAST SIZE ABOUT 2MM,MAX CLAST IS 3MMX7MM;
Comments : BEDDING APPEARS TO BE INCLINED AT ABOUT 5-10
DEGREES,"POD" OF VERY FINE SANDSTONE OCCURS AT
98-100CM (SHADES OF MDM AND DK GRAY),BEDS ABOVE
"POD" ARE HORIZONTAL,FRACTURE WITH DENDRITES ALONG
IT EXTENDS FROM 89-102CM, I.E. FROM THE LIMESTONE
INTO THE BRECCIA,FROM 100-102CM IT APPEARS THAT
WHITE CALCITE IS ALONG FRACTURE RATHER THAN BLACK
DENDRITES;
Leg : 43 Top/Bottom Interval(mm): 0/ 0 Analyst: Galehouse, J.
Hole: 382 Sample Midpoint (m) : 389.40
Core: 19 Top of Core Depth (m) : 383.30
Sect: CC Top of Section Depth(m): 389.40
LITHOLOGY: VOLCANICLASTIC BRECCIA;
Comments : MAX CLAST IS ABOUT 2CM X 4CM,AVE. CLAST IS ABOUT
3-4MM,WHITE MATRIX IS CALCITE(FIZZES),MOST CLASTS
ARE OF VOLCANIC ORIGIN;
Leg : 43 Top/Bottom Interval(mm): 950/1090 Analyst: Galehouse, J.
Hole: 382 Sample Midpoint (m) : 403.39
Core: 20 Top of Core Depth (m) : 402.30
Sect: 1 Top of Section Depth(m): 403.25
LITHOLOGY: SEDIMENT;
Leg : 43 Top/Bottom Interval(mm): 1090/1500 Analyst: Galehouse, J.
Hole: 382 Sample Midpoint (m) : 403.80
Core: 20 Top of Core Depth (m) : 402.30
Sect: 1 Top of Section Depth(m): 403.39
LITHOLOGY: VOLCANICLASTIC BRECCIA;
Texture : CLASTS IN THIS BRECCIA LARGER THAN THOSE OF CORE 19,
HOWEVER THE GENERAL APPEARANCE SIMILAR TO CORE 19,
AVERAGE CLAST IS 3-5MM,MAX CLAST IS 1.5CMX1CM,MOST
CLASTS APPEAR ANGULAR,SUBANGULAR OF SUBROUNDED;
Comments : UNIT AT LEAST 61CM THICK,INCLUDES A 5CM PIECE IN
20-2 WHICH FITS TOGETHER WELL WITH PIECE AT BOTTOM
OF THIS SECTION,BASIC COLOR IS 5YR3/3 (DARK REDDISH
BROWN);
Leg : 43 Top/Bottom Interval(mm): 150/ 200 Analyst: Galehouse, J.
Hole: 382 Sample Midpoint (m) : 404.00
Core: 20 Top of Core Depth (m) : 402.30
Sect: 2 Top of Section Depth(m): 403.95
LITHOLOGY: VOLCANICLASTIC BRECCIA;
SAME AS 20-1;
Leg : 43 Top/Bottom Interval(mm): 0/1300 Analyst: Galehouse, J.
Hole: 382 Sample Midpoint (m) : 471.70
Core: 23 Top of Core Depth (m) : 468.90
Sect: 2 Top of Section Depth(m): 470.40
LITHOLOGY: SEDIMENT;
Leg : 43 Top/Bottom Interval(mm): 1300/1400 Analyst: Galehouse, J.
Hole: 382 Sample Midpoint (m) : 471.80
Core: 23 Top of Core Depth (m) : 468.90
Sect: 2 Top of Section Depth(m): 471.70
LITHOLOGY: VOLCANICLASTIC BRECCIA;
Texture : MATRIX IS WHITE CALCITE+CHALCEDONY+ZEOLITES,CLASTS
ANGULAR,SOME SUBANGULAR,SOME SUBROUNDED,MAX CLAST
IS 5MMX1CM,NO SEDIMENTARY CLASTS OBSERVED;
Alteration : ALTERED BASALT;
Comments : CLASTS MAINLY REDDISH BROWN (5YR4/4);
Leg : 43 Top/Bottom Interval(mm): 0/ 0 Analyst: Galehouse, J.
Hole: 382 Sample Midpoint (m) : 473.50
Core: 23 Top of Core Depth (m) : 468.90
Sect: CC Top of Section Depth(m): 473.50
LITHOLOGY: VOLCANICLASTIC BRECCIA;
Texture : WHITE CALCITE+CHALCEDONEY+ZEOLITES MATRIX,CLASTS
VOLCANIC,MOST ANGULAR,SOME SUBANGULAR OR SUBROUNDED,
MAXIMUM CLAST SIZE ABOUT 1CMX1CM;
Comments : "BEDDING" DISTINGUISHED BY INTERVALS OF DIFFERENT
CLAST SIZE-APPEARS TO BE DIPPING ABOUT 10 DEGREES;
Leg : 43 Top/Bottom Interval(mm): 900/1500 Analyst: Galehouse, J.
Hole: 382 Sample Midpoint (m) : 497.90
Core: 24 Top of Core Depth (m) : 496.40
Sect: 1 Top of Section Depth(m): 497.30
LITHOLOGY: VOLCANICLASTIC BRECCIA;
Texture : MATRIX IS WHITE AND LIGHT GRAY (N7) CALCITE+
CHALCEDONY+ZEOLITES,AT 120-127CM 1 LARGE 3CMX6CM
CLAST OF DARK GRAY (5YR4/1) LESS ALTERED VESICULAR
BASALT WITH CALCITE OR CHALCEDONY-FILLED AMYGDULES
(1MM),MOST CLASTS ANGLAR,SOME SUBANGULAR OR
SUBROUNDED;
Alteration : ALTERED BASALT;
Comments : MOST CLASTS ARE REDDISH BROWN (5YR4/4),INTERVAL
FROM 90-116CM CONTAINS BROKEN PIECES OF
VOLCANICLASTIC BREDDIA;
Leg : 43 Top/Bottom Interval(mm): 0/1480 Analyst: Galehouse, J.
Hole: 382 Sample Midpoint (m) : 499.38
Core: 24 Top of Core Depth (m) : 496.40
Sect: 2 Top of Section Depth(m): 497.90
LITHOLOGY: BASALTIC BRECCIA;
Piece No. : PCE NO PIECE NUMBERS ASSIGNED;
Texture : ALL CLASTS APPEAR TO BE BASALTIC IN ORIGIN,
MATRIX IS CALCITE TO LIGHT GRAY IN COLOR,
ALL CLASTS ARE VESICULAR,MANY FILLED WITH CALCITE
AND/OR SOME OTHER LIGHT COLORED MINERAL (ZEOLITES,
CHALCEDONY), MOST CLASTS ARE ANGULAR, SOME
SUBANGULAR,SOME SUBROUNDED, MANY CLASTS >1CM
(MORE THAN 50% OF SECTION);
Alteration : 90% OF BASALT CLASTS ALTERED,THESE PCES ARE
5YR3/4 DARK BROWN TO 5YR4/4 REDDISH BROWN,CLASTS
WITH VARIOUS SHADES OF DARK GRAY MAKE UP <5-10%
AND APPEAR TO BE LESS ALTERED;
Vesicles : VESICULAR;
Replacement: CALCITE
ZEOLITE
CHALCEDONY
Leg : 43 Top/Bottom Interval(mm): 0/ 0 Analyst: Galehouse, J.
Hole: 382 Sample Midpoint (m) : 499.50
Core: 24 Top of Core Depth (m) : 496.40
Sect: CC Top of Section Depth(m): 499.50
LITHOLOGY: BASALTIC BRECCIA;
APPEARS TO BE SIMILAR TO THAT DESCRIBED IN SECTION
24-2;
Piece No. : PCE NO PIECE NUMBERS ASSIGNED;
Comments : THE CORE LOG INDICATES THAT THERE IS 20CMOF CC
BUT ALLTHRE IS IS A HALF OF A PINT FREEZER BOX;
Leg : 43 Top/Bottom Interval(mm): 180/1460 Analyst: Galehouse, J.
Hole: 382 Sample Midpoint (m) : 517.96
Core: 25 Top of Core Depth (m) : 516.50
Sect: 1 Top of Section Depth(m): 516.68
LITHOLOGY: BASALTIC BRECCIA;
SIMILAR TO 24-2;
Piece No. : PCE NO PCE NUMBERS ASSIGNED;
Texture : MOST CLASTS ARE ANGULAR,SOME ARE SUBANGULAR, AND
SOME ARE SUBROUNDED, WHITE TO LIGHT GRAY MATRIX OF
CALCITE AND CHALCEDONY(?) AND ZEOLITES(?),CLASTS
ALL APPEAR TO BE ALTERED VESICULAR BASALT, MANY
CLASTS IN THE 1CM DIAMETER RANGE, INTERVAL
(128-130) LARGEST CLAST IN SECTION (3CM BY 5CM),
DARK GRAY SPECKLED WITH WHITE CALCITE, CHALCEDONY
AND ZEOLITES IN VESICLES, LESS ALTERED THAN MOST OF
THE CLASTS (THE REDDISH BROWN'S);
Comments : MOST CLASTS AR 5YR3/4 (DARK REDDISH BROWN) TO
5YR4/4 (REDDISH BROWN);
Vesicles : VESICLES IN CLASTS, FILLED WITH ZEOLITES AND
CHALCEDONY;
Replacement: ZEOLITE
CHALCEDONY
Leg : 43 Top/Bottom Interval(mm): 0/1490 Analyst: Galehouse, J.
Hole: 382 Sample Midpoint (m) : 519.49
Core: 25 Top of Core Depth (m) : 516.50
Sect: 2 Top of Section Depth(m): 518.00
LITHOLOGY: BASALTIC BRECCIA;
Piece No. : PCE NO PIECE NUMBERS ASSIGNED, INTERVAL (3-40),
INTERVAL (66-85);
Texture : LIGHT GRAY CALCITE MATIX (INCLUDING CHALCEDONY AND
ZEOLITES), LARGEST CLAST IS 2CM BY 4CM AND IS DARK
GRAY 5YR4/1 (AT INTERVAL 3-7), AMYGDULES IN CLAST
FILLED WITH CALCITE+CHALC AND ZEOLITES,AMYGDULES
ARE 1-2MM IN DIAMETR, PCE 1 HYPOXTLN PORPHYRITIC
BASALT WITH DOLERITIC GROUNDMASS;
Alteration : PCE 1 IS FRESHEST CLAST IN SUB-UNIT 3F;
Comments : MOST CLASTS ARE REDDISH BROWN (5YR4/4), AT INTERVAL
(16-19) SOME YELLOWISH RED COLORATION (5YR4/6);
Vesicles : Size(mm): Percent: 20
IN PCE 1 - DISPLAYS AMYGDALOIDAL INFILLINGS;
Replacement: CALCITE
ZEOLITE
CHALCEDONY
ALL FILLING AMYGDULES AND VESICLES;
EPIDOTE
RARE EPIDOTE IN PCE 1 AMYDALOIDAL INFILLINGS;
Leg : 43 Top/Bottom Interval(mm): 400/ 660 Analyst: Galehouse, J.
Hole: 382 Sample Midpoint (m) : 518.66
Core: 25 Top of Core Depth (m) : 516.50
Sect: 2 Top of Section Depth(m): 518.40
LITHOLOGY: BASALTIC BRECCIA;
Piece No. : PCE NO PCE NUMBERS ASSIGNED;
Structure : CALCITE VEINS <0.5MM IN INTERVAL (50-72), 1-2MM
THICK VEINS AT 73-75;
Texture : BRECCIA IS FINER GRAINED THAN ANYWHERE ELSE IN THE
UNIT,WHITE TO LIGHT GRAY MATRIX,ALMOST ALL CLASTS
ARE LESS THAN 3MM IN DIAMETER, MAXIMUM CLAST SIZE IS
5MM BY 5MM;
Comments : OVERALL COLOR IS REDDISH BROWN (5YR4/4);
Replacement: CALCITE
IN VEINS;
Leg : 43 Top/Bottom Interval(mm): 850/1490 Analyst: Galehouse, J.
Hole: 382 Sample Midpoint (m) : 519.49
Core: 25 Top of Core Depth (m) : 516.50
Sect: 2 Top of Section Depth(m): 518.85
LITHOLOGY: BASALTIC BRECCIA;
Piece No. : PCE NO PCE NUMBERS ASSIGNED;
Texture : LIGHT GRAY CLACITE+CHALC AND ZEOLITES IN MATRIX
AND VESICLES, DARK GRAY CLAST 2 CM X 5 CM AT
(113-118), AT (145-149) IS A DARK GRAY CLAST 35MM BY
55MM;
Comments : OVERALL CLAST COLORS ARE VARIOUS SHADES OF YELLOWISH
BROWN (10YR5/6) AND DARK GRAYS (N3);
Phenocrysts: HORNBLENDE
Size(mm): 4X10
AT 104 CM LESS ALTERED DARK GRAY BASALTIC CLAST
CONTAINS LARGE HBL PHENOS;
Alteration : GRAY CLASTS APPEAR TO BE LESS ALTERED THAN EITHER
THE YELLOWISH BRN CLASTS OR THE ABOVE REDDISH
BROWN CLASTS;
Leg : 43 Top/Bottom Interval(mm): 0/ 400 Analyst: Galehouse, J.
Hole: 382 Sample Midpoint (m) : 519.90
Core: 25 Top of Core Depth (m) : 516.50
Sect: CC Top of Section Depth(m): 519.60
LITHOLOGY: BASALTIC BRECCIA;
Piece No. : PCES 1 (0-4), 2 (4-14), 3 (15-22), 4 (22-30),
5 (30-36), 6 (37-40);
Texture : BASALT CLASTS IN A CALCITE+ CHALC AND ZEOLITE
MATRIX,CLASTS ARE ANGULAR AND VESICULAR IN PCES
3+5+6,PCE 4 HAS MUCH WHITE CALCITE+CHALC AND
ZEOLITE MATRIX;
Alteration : AT BOTTOM OF THE HOLE THE BRECCIA CONTAINS VERY
DARK GRAY (N3) CLAST OF BASALT (28MM X 55MM)
DOES NOT APPEAR TO BE ALTERED VERY MUCH;
Comments : MOST CLASTS IN PCES 5 AND 6 ARE DARK GREENISH GRAY
(5GY4/1), IN PCE 4 CLASTS ARE MAINLY OLIVE BROWN
WITH SOME REDDISH BROWN (5YR4/4);
Replacement: CALCITE
CHALCEDONY
ZEOLITE
Vesicles : VESICULAR;
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