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; |
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]
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