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Core Data from the Deep Sea Drilling Project


Leg : 84    Top/Bottom Interval(mm):    0/1500  Analyst: Ogawa, Y.
Hole: 567A  Sample Midpoint (m)    :   335.50
Core:  16   Top of Core Depth (m)  :   334.00
Sect:  1    Top of Section Depth(m):   334.00

LITHOLOGY: SERPENTINITE;

  Piece No.  : PCE NO PIECE NUMBERS ASSIGNED;

  Structure  : ORIGINAL CATACLASTIC STRUCTURE DEFORMED BY DRILLING,
               UPWARD FLOW MADE BY CORING, SECONDARY FRACTURES
               FILLED BY MINERALS, APPARENT NORMAL FAULT AT
               145-148CM WITH 8MM SEPARATION MAY BE MADE BY CORING;

  Alteration : EXT;

  Comments   : COLOR IS PALE BLUE-GREEN(5BG 7/2) MOTTLED WITH PALE
               BLUE(5PB 7/2), ONLY ONE NON-BRECCIATED MOD ALTERED
               SAMPLE AT 19-30CM, DRILLING DISTURBANCES, UPWARD
               FLOW COMPOSED OF GREENISH BLACK BRECCIA(5G 2/1);


Leg : 84    Top/Bottom Interval(mm):    0/ 710  Analyst: Ogawa, Y.
Hole: 567A  Sample Midpoint (m)    :   336.21
Core:  16   Top of Core Depth (m)  :   334.00
Sect:  2    Top of Section Depth(m):   335.50

LITHOLOGY: SERPENTINITE;
           SAME LITHOLOGY AS CORE 16 SEC 1;

  Piece No.  : PCE NO PIECE NUMBERS ASSIGNED;

  Structure  : ORIGINAL CATACLASTIC STRUCTURE DEFORMED BY DRILLING,
               UPWARD FLOW MADE BY CORING, OPEN CRACKS AT 46-51CM
               AT WELL KNOWN FAULT ZONE CONTACT;

  Alteration : EXT;

  Comments   : COLOR IS PALE BLUE SURROUNDING GREENISH BLACK
               (5G 2/1) PHACOIDAL BRECCINGS OF HARDER SERP
               (5-15MM LONG), DRILLING DISTURBANCES;


Leg : 84    Top/Bottom Interval(mm):    0/ 120  Analyst: Ogawa, Y.
Hole: 567A  Sample Midpoint (m)    :   336.33
Core:  16   Top of Core Depth (m)  :   334.00
Sect: CC    Top of Section Depth(m):   336.31

LITHOLOGY: SERPENTINITE;

  Piece No.  : PCE NO PIECE NUMBERS ASSIGNED;

  Structure  : BRECCIATED, VEINS, CARBONATE CRYSTAL AGGREGATES,
               55-DEGREE FOLIATION MAY BE ORIGINAL ORIENTATION OF
               SHEAR ZONE;


Leg : 84    Top/Bottom Interval(mm):    0/1500  Analyst: Ogawa, Y.
Hole: 567A  Sample Midpoint (m)    :   344.30
Core:  17   Top of Core Depth (m)  :   342.80
Sect:  1    Top of Section Depth(m):   342.80

LITHOLOGY: SERPENTINITE;
           SERPENTINITIC MUD;

  Piece No.  : PCE NO PIECE NUMBERS ASSIGNED;

  Texture    : SMALL PEBBLES AND BRECCIA ALONG CORE LINER AT
               100-120CM, BRECCIA OF SERP AT 0-50CM, VOLCANIC GLASS
               IN MUD;

  Comments   : COLOR IS DUSKY GREEN(5G 3/2)-DUSKY BLUE(5PB 3/2) TO
               BLACK(N 5), INTERVALS 50-104CM AND 140-150CM ARE
               BLACK MUD WITH PYRITE AND VOLCANIC GLASS, YELLOW
               MUDSTONE PEBBLES OF DIAMETER 3MM AT 130CM BUT IT IS
               NOT KNOWN IF THIS LAYER IS SEDIMENTARY, DRILLING
               DISTURBANCE, SMEAR SLIDE SHOWS MUDDY MATERIALS ARE
               MADE ONLY OF SERP & RELATED MINS & ARE EITHER
               ROUNDED OR FLAKY, NO SEDIMENTARY FEATURES SEEN,
               HIGHLY SHEARED & PULVERIZED;

  Replacement: PYRITE


Leg : 84    Top/Bottom Interval(mm):    0/1400  Analyst: Ogawa, Y.
Hole: 567A  Sample Midpoint (m)    :   345.70
Core:  17   Top of Core Depth (m)  :   342.80
Sect:  2    Top of Section Depth(m):   344.30

LITHOLOGY: SERPENTINITE;
           SERPENTINITIC MUD;

  Piece No.  : PCE NO PIECE NUMBERS ASSIGNED;

  Texture    : MUD CONTAINS VOLCANIC GLASS;

  Structure  : WEAKLY DEVELOPED (GENTLY DIPPING) FOLIATION AT 8CM;

  Comments   : 0-65CM IS VERY DARK TO BLACK(N 5) MUDDY SERP,
               65-140CM IS DUSKY BLUE(5PB 3/4) MUDDY SERP WITH
               PHACOIDAL BRECCIA OF GREENISH BLACK(5G 2/1) HARD
               SERP, ORIGINAL SHEAR ZONE EXPERIENCED DRILLING
               DISTURBANCE;


Leg : 84    Top/Bottom Interval(mm):    0/ 670  Analyst: Ogawa, Y.
Hole: 567A  Sample Midpoint (m)    :   346.47
Core:  17   Top of Core Depth (m)  :   342.80
Sect:  3    Top of Section Depth(m):   345.80

LITHOLOGY: SERPENTINITE;
           SERPENTINITIC MUD;

  Piece No.  : PCE NO PIECE NUMBERS ASSIGNED;

  Texture    : FLOW STRUCTURE, SMALL WHITE BRECCIAS (5MM) OF LAYERS
               OF CARB SPORADICALLY INCLUDED;

  Structure  : SHEARS;

  Comments   : DUSKY BLUE(5PB 3/2) MUDDY SERP CONTAINS DUSKY GREEN
               (5G 3/2) TO DUSKY BLUE(5PB 3/2) SERP BRECCIAS
               (5-20MM);


Leg : 84    Top/Bottom Interval(mm):    0/  60  Analyst: Ogawa, Y.
Hole: 567A  Sample Midpoint (m)    :   346.51
Core:  17   Top of Core Depth (m)  :   342.80
Sect: CC    Top of Section Depth(m):   346.55

LITHOLOGY: SERPENTINITE;
           SERPENTINITIC MUD;
           SAME LITHOLOGY AS CORE 17 SEC 3;


Leg : 84    Top/Bottom Interval(mm):   90/ 300  Analyst: Baltuck, M.
Hole: 567A  Sample Midpoint (m)    :   352.00
Core:  18   Top of Core Depth (m)  :   351.70
Sect:  1    Top of Section Depth(m):   351.79

LITHOLOGY: SEDIMENT (MUD);

  Comments   : MEDIUM DARK GRAY(N 4/5), SOUPY GRITTY MUD;


Leg : 84    Top/Bottom Interval(mm):  300/ 940  Analyst: Baltuck, M.
Hole: 567A  Sample Midpoint (m)    :   352.64
Core:  18   Top of Core Depth (m)  :   351.70
Sect:  1    Top of Section Depth(m):   352.00

LITHOLOGY: SEDIMENT (MUDSTONE);

  Texture    : SERPENTINITE & MUDSTONE CLASTS;

  Comments   : DRILLING BRECCIA, PALE BLUE-GREEN(5BG 7/2) MUDSTONE
               CLASTS, ANGULAR TO SUBROUNDED GRAYISH OLIVE-GREEN
               (5GY 3/2) CLASTS, DARK GRAY(N 3) CLASTS;


Leg : 84    Top/Bottom Interval(mm):  940/1010  Analyst: Baltuck, M.
Hole: 567A  Sample Midpoint (m)    :   352.71
Core:  18   Top of Core Depth (m)  :   351.70
Sect:  1    Top of Section Depth(m):   352.64

LITHOLOGY: SERPENTINITE;

  Comments   : ALTERED, PALE BLUE(5B 6/2) COLOR;


Leg : 84    Top/Bottom Interval(mm):    0/ 170  Analyst: Baltuck, M.
Hole: 567A  Sample Midpoint (m)    :   352.89
Core:  18   Top of Core Depth (m)  :   351.70
Sect: CC    Top of Section Depth(m):   352.82

LITHOLOGY: SERPENTINITE;

  Piece No.  : PCE NO PIECE NUMBERS ASSIGNED, INTERVALS 0-4 & 8-13;

  Comments   : ALTERED MARBLED LIGHT & DARK SWIRLS OF MEDIUM BLUISH
               GRAY(5B 5/1) & DUSKY BLUE(5PB 4/2);


Leg : 84    Top/Bottom Interval(mm):    0/ 170  Analyst: Baltuck, M.
Hole: 567A  Sample Midpoint (m)    :   352.89
Core:  18   Top of Core Depth (m)  :   351.70
Sect: CC    Top of Section Depth(m):   352.82

LITHOLOGY: SEDIMENT (MIXED LITHOLOGIES);
           NANNO OOZE;
           SANDSTONE;
           MUDSTONE;

  Piece No.  : PCE NO PIECE NUMBERS ASSIGNED, INTERVALS 4-10 &
               13-17;

  Texture    : ANGULAR CLASTS OF MUDSTONE AND NANNO OOZE;

  Comments   : OLIVE GRAY MUD(5Y 3/2) AT INTERVALS 4-8 & 13-17,
               OOZE IS LIGHT GRAY(N 8), SANDSTONE IS BROWNISH BLACK
               (5YR 4/1), ANGULAR UNEVEN BOUNDARIES BETWEEN PCES,
               DETAILED SKETCH ON SHIPBOARD FORM;


Leg : 84    Top/Bottom Interval(mm):    0/1010  Analyst: Ogawa, Y.
Hole: 567A  Sample Midpoint (m)    :   377.41
Core:  20   Top of Core Depth (m)  :   376.40
Sect:  1    Top of Section Depth(m):   376.40

LITHOLOGY: SEDIMENT (MUDSTONE);
           DOLERITE;
           BASALT;
           PERIDOTITE;
           SERPENTINITE;

  Texture    : DRILLING CLASTS OF DOLERITE AND BASALT;

  Comments   : CONTAINS OLIVE GRAY MUD(5Y 3/2) & SERP & GRAYISH
               GREEN LIMESTONE(10GY 4/4) & BLACK PERIDOTITE(N 1) &
               LT GREEN MUD(5G 6/6);


Leg : 84    Top/Bottom Interval(mm): 1010/1500  Analyst: Ogawa, Y.
Hole: 567A  Sample Midpoint (m)    :   377.90
Core:  20   Top of Core Depth (m)  :   376.40
Sect:  1    Top of Section Depth(m):   377.41

LITHOLOGY: METAGABBRO;
           METABASALT;
           METADOLERITE;

  Piece No.  : PCE 1 (102-107), 2 (108-112), 3 (113-116),
               4 (118-122), 5 (124-127), 6 (129-132), 7 (134-137),
               8 (139-142), 9 (143-150);

  Texture    : CATACLASTIC TEXTURE DEVELOPED IN PCES 1&2&4-6&9;

  Structure  : EPIDOTE VEIN IN PCES 2&3;

  Alteration : EXT;

  Comments   : NO MATRIX SEEN BUT COULD BE TO BLUE-GREEN MUD OR
               BASEMENT, PCE 7 IS METABASALT, PCE 8 IS METADOLERITE
               OR METABASALT;

  Replacement: EPIDOTE
               FILLS VEINS IN PCES 2&3;


Leg : 84    Top/Bottom Interval(mm):    0/ 130  Analyst: Ogawa, Y.
Hole: 567A  Sample Midpoint (m)    :   394.23
Core:  21   Top of Core Depth (m)  :   394.10
Sect: CC    Top of Section Depth(m):   394.20

LITHOLOGY: GABBRO DRILLING CLASTS;


Leg : 84    Top/Bottom Interval(mm):  130/ 280  Analyst: Ogawa, Y.
Hole: 567A  Sample Midpoint (m)    :   394.38
Core:  21   Top of Core Depth (m)  :   394.10
Sect: CC    Top of Section Depth(m):   394.23

LITHOLOGY: METAGABBRO;
           METADOLERITE;

  Piece No.  : PCE 1 (13-19), 2 (20-22), 3 (25-28);

  Texture    : CATACLASTIC TEXTURE IN PCES 1&2;

  Comments   : PCES 1&2 ARE METAGABBRO, PCE 3 IS METADOLERITE;


Leg : 84    Top/Bottom Interval(mm):    0/ 240  Analyst: Ogawa, Y.
Hole: 567A  Sample Midpoint (m)    :   403.14
Core:  22   Top of Core Depth (m)  :   402.90
Sect: CC    Top of Section Depth(m):   403.00

LITHOLOGY: SERPENTINITE;

  Piece No.  : PCE NO PIECE NUMBERS ASSIGNED;

  Alteration : EXT;

  Comments   : COLOR IS GRAYISH BLUE(5PB 5/6), ENTIRELY CRUSHED AND
               PULVERIZED TO A MUD, SERP INCLUDES SERPENTINE &
               SPINEL & OP.MINS, SEVERAL PCES INCLUDED IN PLASTIC
               BAG IN CORE SAMPLE (DIAMETER PCES <1.5CM);

  Phenocrysts: SPINEL

  Groundmass : OPAQUE MINERALS

  Replacement: SERPENTINITE
               Minerals Replaced: HARZBURGITE
               ID UNCERTAIN OF HARZBURGITE;


Leg : 84    Top/Bottom Interval(mm):    0/ 440  Analyst: Baltuck, M.
Hole: 567A  Sample Midpoint (m)    :   412.24
Core:  23   Top of Core Depth (m)  :   411.80
Sect:  1    Top of Section Depth(m):   411.80

LITHOLOGY: SERPENTINITIC MUD;
           MICROGABBRO;
           DIABASE;

  Piece No.  : PCE NO PIECE NUMBERS ASSIGNED;

  Texture    : DIABASE CLASTS IN INTERVALS 0-7 & 40-44 OF SIZE
               <1CM, MICROGABBRO CLASTS IN INTERVALS 7-22 & 37-42;

  Structure  : VEINS FILLED BY A SOFT WHITE MINERAL IN BRECCIA;

  Comments   : FIRMER BRECCIA IN INTERVALS 0-22 & 37-44 (5GY 6/1),
               PCES SAND-SIZED TO 4CM DIAMETER, COLOR IS BLUISH
               GRAY(5B 5/1);

  Replacement: PYRITE
               XTLS IN BRECCIA;


Leg : 84    Top/Bottom Interval(mm):    0/ 110  Analyst: Baltuck, M.
Hole: 567A  Sample Midpoint (m)    :   412.32
Core:  23   Top of Core Depth (m)  :   411.80
Sect: CC    Top of Section Depth(m):   412.31

LITHOLOGY: SERPENTINITIC MUD;

  Texture    : SAND-SIZED DIABASE CLASTS OF BLACK COLOR(N 5);

  Comments   : COLOR OF MUD IS BLUISH GRAY(5B 6/1);


Leg : 84    Top/Bottom Interval(mm):    0/ 240  Analyst: Ogawa, Y.
Hole: 567A  Sample Midpoint (m)    :   429.84
Core:  25   Top of Core Depth (m)  :   429.60
Sect:  1    Top of Section Depth(m):   429.60

LITHOLOGY: ALTERED GABBRO;

  Piece No.  : PCE 1 (4-10), 2 (12-24);

  Structure  : VEINS IN PCE 1 FILLED BY PALE GREENISH YELLOW MIN;

  Alteration : MOD;

  Comments   : PCE 2 PULVERIZED BY DRILLING, PCE 1 GREENISH GRAY
               COLOR(5G 5/2);


Leg : 84    Top/Bottom Interval(mm):  260/1420  Analyst: Ogawa, Y.
Hole: 567A  Sample Midpoint (m)    :   431.02
Core:  25   Top of Core Depth (m)  :   429.60
Sect:  1    Top of Section Depth(m):   429.86

LITHOLOGY: BASALT;

  Piece No.  : PCE 3 (27-32), 4 (33-45), 5 (47-52), 5A (54-60),
               6B (61-64), 7 (69-73), 8 (77-82), 9 (87-90),
               10 (93-98), 11 (101-104), 12 (106-110),
               13 (112-118), 14 (120-125), 15 (127-132),
               16 (135-141);

  Texture    : BASALT MIXED WITH HYALOCLASTITE TO FORM LENTICULAR
               AND FLOW STRUCTURE IN PCE 6A, POSSIBLE PILLOW
               MARGINS;

  Structure  : BLACK CLASTS IN PCE 4, CALCITE VEINS THROUGHOUT,
               BASALT COVERED BY FINE BASALTIC "SEDIMENTS" OF
               HYALOCLASTITE, SHEARED TO FORM CM-SIZED PHACOIDAL
               LENSES IN PCES 6B-16, LAYERS OF VOLCANIC "SEDIMENTS"               IN PCE 4 OF BLUE & RED & GRAY COLORS, SED STRUCTURE;

  Alteration : MOD
               VEINS AND LAYERS;

  Comments   : BASALT COLOR IS VERY DUSKY RED(2.5YR 2.5/2) TO DARK
               REDDISH BROWN(2.5YR 2.5/4), DETAILED SKETCH OF PCES
               4 & 15 ON SHIPBOARD FORM;

  Replacement: CALCITE
               FILLS VEINS;


Leg : 84    Top/Bottom Interval(mm):    0/ 290  Analyst: Bourgois, J.
Hole: 567A  Sample Midpoint (m)    :   431.39
Core:  25   Top of Core Depth (m)  :   429.60
Sect:  2    Top of Section Depth(m):   431.10

LITHOLOGY: ALTERED BASALT;

  Piece No.  : PCE 1 (2-11), 2 (14-19), 3 (22-29);

  Texture    : VERY FINE-GRAINED;

  Alteration : EXT;

  Comments   : COLOR IS DUSKY RED(5R 3/4) TO VERY DARK RED(5R 2/6)
               AND VERY DUSKY RED(10R 2/2), VEINS OF SAME MIN IN
               PCES 12-14 OF SAME CORE SEC;


Leg : 84    Top/Bottom Interval(mm):  300/1500  Analyst: Bourgois, J.
Hole: 567A  Sample Midpoint (m)    :   432.60
Core:  25   Top of Core Depth (m)  :   429.60
Sect:  2    Top of Section Depth(m):   431.40

LITHOLOGY: ALTERED BASALT;

  Piece No.  : PCE 4 (30-37), 5 (38-45), 6 (46-51), 7 (53-60),
               8 (61-69), 9 (72-79), 10 (82-87), 11 (88-95),
               11A (95-105), 12 (107-111), 12A (112-120),
               13 (123-129), 13A (123-128), 14 (132-138),
               15 (143-147);

  Texture    : VERY FINE-GRAINED;

  Structure  : VEINS IN PCES 12-14 FILLED WITH SAME RED MIN AS PCES
               1-3 OF SAME CORE SEC, VEINS & FACIES GIVE EVIDENCE
               FOR TECTONIC FRACTURES, VERY FRACTIONATED, FIRST
               GENERATION NORMAL AND SECOND GENERATION REVERSE
               FAULTING IN PCE 12A, CRACKS FILLED DURING SECOND
               FAULTING PHASE;

  Alteration : MOD;

  Comments   : BASALT COLOR IS GREENISH BLACK(5GY 2/1), DETAILED
               SKETCH OF PCE 12A ON SHIPBOARD FORM;

  Vesicles   :
               Location: THROUGHOUT Filling: CALCITE

  Phenocrysts: OLIVINE
               Size(mm):  0.5TO 2-3
               ERODED;

  Groundmass : PLAGIOCLASE


Leg : 84    Top/Bottom Interval(mm):    0/ 200  Analyst: Bourgois, J.
Hole: 567A  Sample Midpoint (m)    :   432.80
Core:  25   Top of Core Depth (m)  :   429.60
Sect:  3    Top of Section Depth(m):   432.60

LITHOLOGY: ALTERED BASALT;
           SAME LITHOLOGY AS CORE 25 SEC 2;

  Piece No.  : PCE 1 (2-8), 2 (11-19);

  Comments   : % LOW-TEMP METAMORPHISM;

  Vesicles   : VESICLES FILLED WITH A PALE BLUE-GREEN MIN
               (5BG 7/2) AT 6-14CM;


Leg : 84    Top/Bottom Interval(mm):    0/ 220  Analyst: Ogawa, Y.
Hole: 567A  Sample Midpoint (m)    :   438.72
Core:  26   Top of Core Depth (m)  :   438.50
Sect:  1    Top of Section Depth(m):   438.50

LITHOLOGY: BASALT;

  Piece No.  : PCE 1 (2-9), 2 (12-15), 3 (18-21);

  Structure  : CALCITE VEINS, PCE 1 HAS SAME CURVE AS PILLOW BASALT
               & REDDISH BASALTIC "SHALE" RIM;

  Alteration : EXT;

  Comments   : COLOR OF CORE IS DUSKY GREEN(5G 3/2), COLOR OF RIM
               IS VERY DUSKY RED(10R 2/2), DETAILED SKETCH OF PCES
               1&3 ON SHIPBOARD FORM;

  Replacement: CALCITE
               FILLS VEINS;


Leg : 84    Top/Bottom Interval(mm):  220/1150  Analyst: Ogawa, Y.
Hole: 567A  Sample Midpoint (m)    :   439.65
Core:  26   Top of Core Depth (m)  :   438.50
Sect:  1    Top of Section Depth(m):   438.72

LITHOLOGY: GABBRO;

  Piece No.  : PCE 4 (24-28), 5 (30-36), 6 (38-44), 7 (46-53),
               8 (57-65), 9 (68-72), 10 (75-81), 11 (83-87),
               12 (90-93), 13 (96-99), 14 (101-104), 15 (106-114);

  Structure  : NO FOLIATION NOR DISTINCT DEFORMATION;

  Comments   : CONSIDERABLE METAMORPHISM, COLOR IS GREEN(10G 4/2);


Leg : 84    Top/Bottom Interval(mm):  340/1400  Analyst: Baltuck, M.
Hole: 567A  Sample Midpoint (m)    :   447.20
Core:  27   Top of Core Depth (m)  :   445.80
Sect:  1    Top of Section Depth(m):   446.14

LITHOLOGY: MICROGABBRO;
           DRILLING BRECCIA;

  Piece No.  : PCE NO PIECE NUMBERS ASSIGNED, INTERVALS 34-95 &
               113-131;

  Comments   : GRADED DRILLING BRECCIA, COLOR IS OLIVE BLACK
               (5Y 2/1);


Leg : 84    Top/Bottom Interval(mm):  340/1400  Analyst: Baltuck, M.
Hole: 567A  Sample Midpoint (m)    :   447.20
Core:  27   Top of Core Depth (m)  :   445.80
Sect:  1    Top of Section Depth(m):   446.14

LITHOLOGY: METAGABBRO;
           GREENSCHIST FACIES;

  Piece No.  : PCE 1 (98-101), 2A (105-110), 2B (107-111),
               3 (133-138);

  Texture    : MEDIUM-GRAINED, OPHITIC;

  Structure  : CALCITE VEINS COMPRISE 2% OF ROCK;

  Alteration : EXT;

  Comments   : PCES 1-2B ARE DARK-GREENISH GRAY(5GY 4/1), PCE 3 IS
               GREENISH BLACK(5G 2/1);

  Groundmass : PLAGIOCLASE               (   60%)
               REPLACED BY ACTINOLITE & CLINOZOITE & CHLORITE;

               COMBINATION               (   10%)
               INCLUDES OP.MINS & CHROMITE;

               COMBINATION               (TO 30%)
               INCLUDES CPX & AMPHIBOLITE, BROWN XTLS;

  Replacement: CHLORITE
               Minerals Replaced: PLAG

               CLINOZOISITE
               Minerals Replaced: PLAG

               ACTINOLITE
               Minerals Replaced: PLAG

               AMPHIBOLE

               CALCITE
               IN VEINS;


Leg : 84    Top/Bottom Interval(mm): 1400/1500  Analyst: Baltuck, M.
Hole: 567A  Sample Midpoint (m)    :   447.30
Core:  27   Top of Core Depth (m)  :   445.80
Sect:  1    Top of Section Depth(m):   447.20

LITHOLOGY: SERPENTINITIC MUD;

  Texture    : CLASTS OF METAGABBRO & SERP;

  Comments   : MEDIUM-BLUISH GRAY(5B 5/1);


Leg : 84    Top/Bottom Interval(mm):    0/ 170  Analyst: Bourgois, J.
Hole: 567A  Sample Midpoint (m)    :   447.47
Core:  27   Top of Core Depth (m)  :   445.80
Sect: CC    Top of Section Depth(m):   447.40

LITHOLOGY: SERPENTINITIC MUD;

  Texture    : NO CLASTS;

  Comments   : MEDIUM-BLUISH GRAY(5B 5/1);


Leg : 84    Top/Bottom Interval(mm):  440/1500  Analyst: Bourgois, J.
Hole: 567A  Sample Midpoint (m)    :   466.70
Core:  28   Top of Core Depth (m)  :   465.20
Sect:  1    Top of Section Depth(m):   465.64

LITHOLOGY: SERPENTINIZED PERIDOTITE;

  Piece No.  : PCE 1 (44-53), 2 (64-67), 3 (90-97), 4 (116-123),
               5A (126-132), 5 (129-133), 6 (146-158);

  Structure  : CONJUGATE SET OF EN ECHELON TENSION GASHES IN PCE 1;

  Alteration : MOD;

  Comments   : COLOR IS GREENISH BLACK(5B 2/1);

  Replacement: SERPENTINITE
               Minerals Replaced: PERIDOTITE


Leg : 84    Top/Bottom Interval(mm):  440/1500  Analyst: Bourgois, J.
Hole: 567A  Sample Midpoint (m)    :   466.70
Core:  28   Top of Core Depth (m)  :   465.20
Sect:  1    Top of Section Depth(m):   465.64

LITHOLOGY: SERPENTINITIC MUD;

  Piece No.  : PCE NO PIECE NUMBERS ASSIGNED, INTERVALS 55-62 &
               70-90 & 97-115 & 136-145;

  Comments   : MEDIUM-BLUE COLOR(5B 5/1);


Leg : 84    Top/Bottom Interval(mm):    0/1500  Analyst: Ogawa, Y.
Hole: 567A  Sample Midpoint (m)    :   486.10
Core:  29   Top of Core Depth (m)  :   484.60
Sect:  1    Top of Section Depth(m):   484.60

LITHOLOGY: DRILLING BRECCIA;
           PERIDOTITE;
           GABBRO;
           DOLERITE;
           BASALT;

  Piece No.  : PCE NO PIECE NUMBERS ASSIGNED;

  Texture    : BROWN CLASTS OF BASALT;

  Structure  : TALC VEINS;

  Comments   : COLOR IS DUSKY BLUE-GREEN(5BG 3/2), LARGER PCES
               SEPARATED & ORIENTED IN SEC 2, BRECCIA DIAMETER
               RANGES FROM 1MM TO 2CM, CONSISTS OF 71% PERIDOTITE&
               14% GABBRO& 7% DOLERITE& 7% BASALT;

  Replacement: COMBINATION               (    1%)
               CONTAINS TALC & PECTOLITE?, WHITE MINS;


Leg : 84    Top/Bottom Interval(mm):   80/ 120  Analyst: Baltuck, M.
Hole: 567A  Sample Midpoint (m)    :   486.22
Core:  29   Top of Core Depth (m)  :   484.60
Sect:  2    Top of Section Depth(m):   486.18

LITHOLOGY: MICROGABBRO;

  Piece No.  : PCE 2 (8-12);

  Structure  : CARB VEINS;

  Groundmass : PLAGIOCLASE               (  >50%)
               MAY BE LABRADORITE;

               PYROXENE                  (   30%)
               TOTAL PERCENTAGE INCLUDES REPLACEMENT MINS;

  Replacement: COMBINATION               (   10%)
               CONTAINS ACTINOLITE & CHLORITE;

               OPAQUE MINERALS           (    5%)
               MAY BE SPINEL OR CHROMITE OR MAGNETITE;

               CARBONATE                 (    3%)
               IN VEINS;


Leg : 84    Top/Bottom Interval(mm):   30/1450  Analyst: Baltuck, M.
Hole: 567A  Sample Midpoint (m)    :   487.55
Core:  29   Top of Core Depth (m)  :   484.60
Sect:  2    Top of Section Depth(m):   486.13

LITHOLOGY: SERPENTINITE;

  Piece No.  : PCE 1 (3-7), 3 (14-19), 4 (21-27), 5 (28-33),
               6 (35-40), 7 (42-45), 8 (47-52), 9 (53-57),
               10 (57-62), 11 (63-66), 12 (69-73), 13 (76-85),
               14 (89-92), 15 (93-99), 16 (100-104), 17 (107-111),
               18 (115-122), 19 (123-132), 20 (135-138),
               21 (140-145);

  Texture    : PCES 7 & 20 ARE SERP MUD CONTAINING SERP CLASTS,
               PCES 3 & 8 ARE FINE-GRAINED, PCE 10 IS FINE &
               COARSE-GRAINED;

  Structure  : SHEARING IN PCES 1&3&10&19, VEINS OF TALC OR
               CHRYSOTILE IN PCE 3, VEINS OF SERP IN PCES 1 & 4-6 &
               9-11 & 21;

  Alteration : MOD
               PCES 1-6 & 9-19 & 21;
               EXT
               PCE 8;
               ALMOST COMPLETELY
               PCES 7&20 ARE SERPENTINITIC MUD;

  Comments   : PCE 3 IS DARK GREEN, PCE 7 IS DUSKY BLUE(5PB 3/2),
               PCE 8 IS GRAYISH BLACK(N 2), PCE 20 IS PALE BLUE
               (5PB 7/2), PCES 1 & 4-6 & 9-11 & 21 ARE BLACK(N 1);

  Phenocrysts: PYROXENE
               PCES 1 & 4-6 & 9-11 & 21 CONTAIN COARSE DARK GRAIN
               OF PYX;

  Replacement: TALC
               ID UNCERTAIN, MAY BE CHRYSOTILE, IN VEINS;


Leg : 84    Top/Bottom Interval(mm): 1450/1500  Analyst: Baltuck, M.
Hole: 567A  Sample Midpoint (m)    :   487.60
Core:  29   Top of Core Depth (m)  :   484.60
Sect:  2    Top of Section Depth(m):   487.55

LITHOLOGY: ALTERED BASALT;

  Piece No.  : PCE 22 (145-150);

  Structure  : VEINS SHOWING EXTENSION AND FILLED WITH CALCITE;

  Alteration : MOD
               BLACK FE-MN OXIDE;

  Comments   : BROWN(5YR 3/4), DETAILED SKETCH ON SHIPBOARD FORM;

  Vesicles   :
               Location:            Filling: SERP

  Replacement: CALCITE
               IN VEINS;

               FERROUS MN OXIDE

               SERPENTINITE
               IN VESICLES;


Leg : 84    Top/Bottom Interval(mm):    0/ 330  Analyst: Baltuck, M.
Hole: 567A  Sample Midpoint (m)    :   487.93
Core:  29   Top of Core Depth (m)  :   484.60
Sect: CC    Top of Section Depth(m):   487.70

LITHOLOGY: DRILL BRECCIA;
           SERPENTINITE;
           GABBRO;
           ALTERED BASALT;

  Piece No.  : PCE NO PIECE NUMBERS ASSIGNED;

  Texture    : SERP-GABBRO-ALTERED BASALT CLASTS;

  Alteration : MOD;

  Comments   : GRAIN SIZE 0.5-3CM;


    

Introduction


Cite as: Deep Sea Drilling Project (1989): Archive of Core and Site/Hole Data and Photographs from the Deep Sea Drilling Project (DSDP). National Geophysical Data Center, NOAA. doi:10.7289/V54M92G2 [access date]

These Web pages are from the Core Data from the Deep Sea Drilling Project Legs 1-96 CD-ROM produced in 1989 and modified in 2000 by the U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Environmental Satellite, Data, and Information Service, National Geophysical Data Center (now part of the National Centers for Environmental Information), and collocated World Data Center for Marine Geology and Geophysics, Boulder (now part of the World Data Service for Geophysics). Data were compiled in cooperation with the U.S. Science Support Program, of the Joint Oceanographic Institutions, Inc. (now the Consortium for Ocean Leadership), and the U.S. National Science Foundation.

Please see NOAA's privacy and disclaimer information. Send questions or comments to mgg.info@noaa.gov.

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