Leg : 31 Top/Bottom Interval(mm): 750/1380 Analyst: MacGregor, I.
Hole: 293 Sample Midpoint (m) : 517.38
Core: 18 Top of Core Depth (m) : 516.00
Sect: 1 Top of Section Depth(m): 516.75
LITHOLOGY: BASALT;
Piece No. : PCES 1 (76-87), 2 (87-101), 3A (101-108),
3B (101-108), 4 (108-116), 5 (116-125),
6 (125-133), 7 (133-137);
Comments : DARK GREENISH GREY (5G 6/1);
Leg : 31 Top/Bottom Interval(mm): 1000/1500 Analyst: MacGregor, I.
Hole: 293 Sample Midpoint (m) : 522.50
Core: 19 Top of Core Depth (m) : 521.00
Sect: 1 Top of Section Depth(m): 522.00
LITHOLOGY: BASALT;
Piece No. : BASALT BRECCIA;
PCES 1 (100-119), 2 (120-126), 3 (128-135),
4 (133-137), 5 (137-141), 6 (141-150);
Texture : BRECCIA COMPOSED TO ANGULAR TO SUBANGULAR BASALT
FRAGMENTS FROM 1-5 MM IN SIZE FLOATING IN FINE
GRAINED GREYISH ORANGE MATRIX, MATRIX CONTAINS
ANOTHER POPULATION OF FRAGMENTS 1 T0 10 MM IN SIZE,
MATRIX IS A SILTY CLAY OF CLAY MINERALS +
FERRUGINOUS MATERIAL AND VERY PALE GREEN AMPHIBOLE
WITH MINOR FELDSPAR + LITHIC FRAGMENTS AND
ZEOLITES;
Groundmass : FELDSPAR
Replacement: CLAY MINERALS
OTHER
FERRUGINOUS MATERIAL;
AMPHIBOLE
ZEOLITE
MATRIX IS A SILTY CLAY OF CLAY MINERALS +
FERRUGINOUS MATERIAL + VERY PALE GREEN AMPHIBOLE
WITH MINOR FELDSPAR + LITHIC FRAGMENTS + ZEOLITES;
Leg : 31 Top/Bottom Interval(mm): 0/1500 Analyst: MacGregor, I.
Hole: 293 Sample Midpoint (m) : 527.00
Core: 20 Top of Core Depth (m) : 525.50
Sect: 1 Top of Section Depth(m): 525.50
LITHOLOGY: BASALT;
BRECCIA;
Piece No. : PCES 1 (0-5), 2 (5-20), 3 (20-26), 4 (25-36),
5 (36-45), 6 (45-53), 7 (53-61), 8A (61-63),
8B (63-66), 9 (61-69), 10 (69-74), 11 (74-84),
12 (84-89), 13 (89-96), 14 (96-103), 15 (103-117),
16 (117-127), 17 (127-134), 18 (134-144),
19 (144-149);
Texture : FROM 0-25 CM BRECCIA OF ANGULAR TO SUBANGULAR
BASALT FRAGMENTS WITH SOME AT LEAST 10 CM IN
LENGTH - EQUIVALENT TO BRECCIA IN CORE 19 SECTION 1,
FROM 25-61 CM CLASTS (2-4 CM) ANGULAR TO SUBANGULAR
SET IN FINE GRAINED MATRIX - CLASTS ARE FREE
FLOATING - MATRIX APPEARS BIMODAL WITH GRAINS
0.2 TO 0.8 CM IN FINE SILTY CLAY MATRIX WHICH IS
MODERATE REDDISH BROWN IN COLOR (10 R 4/6) - CLASTS
COMPOSED OF ANGULAR BASALT FRAGMENTS AND A FEW
MICROGABBROS, FROM 61-145 CM CLASTS (4-15 CM) OF
ANORTHOSITIC GABBRO SET IN FINE GRAINED + LIGHT
GREENISH GREY MATRIX + CLASTS ARE FREE FLOATING AND
MATRIX ALSO APPEARS TO BE BIMODAL IN GRAIN SIZE,
FROM 145-150 CM SMALL FRAGMENTS OF GREENISH GREY
(5GY 6/1) BASALT;
Comments : FOUR UNITS IN CORE (0-25 CM) + (25-61 CM) +
(61-145 CM) + (145-150 CM), FROM 25-61 CM FINE SILTY
CLAY MATRIX WHICH IS MODERATE REDDISH BROWN IN
COLOR (10 R 4/6), IN 145-150 CM SMALL FRAGMENT OF
GREENISH GREY (5 GY 6/1) BASALT;
Groundmass : MATRIX
FOR DESCRIPTION OF MATRIX AND ITS CONTENTS
SEE TEXTURE;
Leg : 31 Top/Bottom Interval(mm): 0/ 910 Analyst: MacGregor, I.
Hole: 293 Sample Midpoint (m) : 535.91
Core: 21 Top of Core Depth (m) : 535.00
Sect: 1 Top of Section Depth(m): 535.00
LITHOLOGY: BRECCIA;
GABBRO;
Piece No. : PCES 1 (0-16), 2 (15-25), 3 (25-30), 4 (30-40),
5 (40-44), 6 (44-51), 7 (51-56), 8 (56-62),
9 (62-66), 10 (66-70), 11 (72-79), 12 (79-84),
13 (86-91);
Texture : LARGE (UP TO 13 CM) CLASTS OF GABBRO AND
ANORTHOSITIC GABBRO (ANGULAR TO SUBANGULAR) FLOATING
IN FINE GRAINED GROUNDMASS WHICH IS COMPOSED OF
BIMODAL GRAIN SIZE;
Comments : MATRIX OF PALE YELLOWISH ORANGE, REFER TO THE
INITIAL REPORTS FOR ADDITIONAL INFORMATION ON
SITE 293 LITHOLOGY;
Leg : 31 Top/Bottom Interval(mm): 0/1500 Analyst: MacGregor, I.
Hole: 293 Sample Midpoint (m) : 538.00
Core: 21 Top of Core Depth (m) : 535.00
Sect: 2 Top of Section Depth(m): 536.50
LITHOLOGY: GABRRO;;
BRECCIA;
Piece No. : PCES 1 (0-9), 2 (9-19), 3 (19-34), 4 (36-46),
5 (46-51), 6 (51-59), 7 (60-71), 8 (71-82),
9 (82-97), 10 (97-112), 11 (112-120), 12 (120-126),
13 (126-138), 14 (138-149);
Texture : 0-40CM: COARSE-GRAINED GABBRO CLASTS (1-15CM) IN
DARK YELLOWISH ORANGE (10YR 6/0) MATRIX, CLASTS ARE
ANGULAR & FLOAT IN MATRIX,MATRIX IS BIMODAL;
40-80CM: FINER-GRAINED GABBRO CLASTS (1-3CM) IN
DARK YELLOWISH ORANGE MATRIX;
80-89CM: MATRIX NOW GREYISH BROWN (5YR 3/2) -CLASTS
VERY FINE-GRAINED GABBRO;
89-150CM: GABBRO CLASTS (1-5CM) IN LIGHT
GREENISH GREY (5GY 8/1) MATRIX, CLASTS ARE
ANGULAR TO SUBANGULAR-MATRIX BIMODAL;
Comments : FROM 0-40 CM DARK YELLOWISH ORANGE (10 YR 6/6)
MATRIX, FROM 40-80 CM HAS DARK YELLOWISH ORANGE
MATRIX, FROM 80-89 CM MATRIX NOW GREYISH BROWN
(5YR 3/2), FROM 89-150 CM MATRIX IS LIGHT GREENISH
GREY (5 GY 8/1), REFER TO INITIAL REPORTS FOR
ADDITIONAL INFORMATION ON LITHOLOGY FOR SITE 293;
Groundmass : FELDSPAR
PYROXENE
FELDSPAR AND PYX IN MATRIX OF PCE 10, SEE TEXTURE
FOR ADDITIONAL INFORMATION ON GROUNDMASS;
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