Leg : 29 Top/Bottom Interval(mm): 550/ 800 Analyst: Ovenshine, A.T. Hole: 283 Sample Midpoint (m) : 589.30 Core: 18 Top of Core Depth (m) : 588.50 Sect: 1 Top of Section Depth(m): 589.05 LITHOLOGY: BASALT; Piece No. : PCES 1 (55-60), 2 (60-64), 3 (65-71), 4 (72-78); Texture : FELDSPAR LATHS, DEVITRIFIED BASALTIC GLASS AND IS LIGHT GREENISH GREY; Structure : CALCITE AND SERPENTINE VEINLETS, PCE 4 HAS A 2 CM DARK RED PALAGONITE VEINLET WHICH SUGGESTS INTER- PILLOW GLASS; Comments : DEVITRIFIED BASALTIC GLASS, LIGHT GREENISH GREY (5 G 7/1), SEE LITHOLOGIC DESCRIPTION IN THE INITIAL REPORT FOR MORE INFORMATION; Groundmass : FELDSPAR ( < 2%) ROCK CONSISTS OF LESS THAN OR EQUAL TO 2 PERCENT FELDSPAR LATHS IN GROUNDMASS OF CLAY + ZEOLITE + SERPENTINE; Replacement: CLAY ZEOLITE SERPENTINITE ROCK CONSISTS OF LESS THAN OR EQUAL TO 2 PERCENT FELDSPAR LATHS IN GROUNDMASS OF CLAY + ZEOLITE + SERPENTINE; CALCITE PALAGONITE SERPENTINITE CALCITE AND SERPENTINE VEINLETS, PCE 4 HAS A DARK RED PALAGONITE VEINLET; Leg : 29 Top/Bottom Interval(mm): 800/1000 Analyst: Ovenshine, A.T. Hole: 283 Sample Midpoint (m) : 589.50 Core: 18 Top of Core Depth (m) : 588.50 Sect: 1 Top of Section Depth(m): 589.30 LITHOLOGY: BASALT; BASALTIC BRECCIA; Piece No. : PCES 5 (80-83), 6 (83-100); Texture : TECTONIC OR AUTOBRECCIA CONSISTS OF AMYGDALOIDAL BASALT (80 PERCENT), DARK DEVITRIFIED GLASS FRAGMENTS (5 PERCENT); Structure : TECTONIC OR AUTOBRECCIA CONSISTS OF AMYGDALOIDAL BASALT (80 PERCENT) + CALCITE VEINS (15 PERCENT) + DARK DEVITRIFIED GLASS FRAGMENTS (5 PERCENT), MINOR DARK GREEN SERPENTINE VEINLETS; Alteration : ALTERED BASALTIC BRECCIA; Comments : DARK GREENISH-GREY (5 GY 3/1); Vesicles : Size(mm): 1 Percent: TECTONIC OR AUTOBRECCIA IS 80 PERCENT AMYGDALOIDAL BASALT, AMYGDULES AVERAGE 1 MM; Groundmass : GLASS DARK DEVITRIFIED GLASS FRAGMENTS; Replacement: CALCITE CALCITE VEINS; SERPENTINITE DARK GREEN SERPENTINE VEINLETS; Leg : 29 Top/Bottom Interval(mm): 1000/1500 Analyst: Ovenshine, A.T. Hole: 283 Sample Midpoint (m) : 590.00 Core: 18 Top of Core Depth (m) : 588.50 Sect: 1 Top of Section Depth(m): 589.50 LITHOLOGY: BASALT; Piece No. : PCES 7 (100-106), 8 (105-110), 9 (110-117), 10 (111-116), 11 (118-131), 12 (132-139), 13 (139-150); Texture : ZONES OF BRECCIATION; Structure : ALTERED BASALT CUT BY CALCITE AND SERPENTINE VEINLETS UP TO 1 CM; Comments : DARK GREENISH GREY (5 GY 3/1), ZONES OF BRECCIATION; Alteration : EXTENSIVELY ALTERED; Replacement: SERPENTINITE CALCITE ALTERED BASALT CUT BY CALCITE AND SERP VEINLETS; Leg : 29 Top/Bottom Interval(mm): 0/ 800 Analyst: Ovenshine, A.T. Hole: 283 Sample Midpoint (m) : 590.30 Core: 19 Top of Core Depth (m) : 589.50 Sect: 1 Top of Section Depth(m): 589.50 LITHOLOGY: BASALT; Piece No. : PCES 1 (0-13), 2 (14-18), 3 (19-22), 4 (22-27), 5 (27-31), 6 (32-38), 7 (40-47), 8 (48-51), 9 (51-54), 10 (52-59), 11 (55-59), 12 (60-64), 13 (64-69), 14 (70-76), 15 (75-79); Texture : CHILLED RIM, (SEE STRUCTURE FOR ADDITIONAL INFORMATION); Structure : FRAGMENT (PCE 6 INTERVAL 32-38 CM) CONTAINS A FRAGMENT OF THE UPPER SURFACE OF A PILLOW SHOWING A DEVITRIFIED GLASS VENEER AND A CHILLED RIM GRADING DOWNWARD TO HOLOCRYSTALLINE ALTERED BASALT - THIS FRAGMENT STRONGLY SUGGESTS THAT THE BASALT WAS EITHER A PILLOW FLOW OR A BROKEN PILLOW BRECCIA; Alteration : EXTENSIVELY ALTERED; Comments : LITHOLOGY SIMILAR TO CORE 18 SECTION 1 INTERVAL 100-150 CM, FRAGMENT OF THE UPPER SURFACE OF PILLOW SHOWING A DEVITRIFIED GLASS VENEER - SEE STRUCTURE FOR ADDITIONAL INFORMATION, SEE CORE FORM AND LITHOLOGIC DESCRIPTION IN THE INITIAL REPORT FOR FURTHER DETAILS; |
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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