Leg : 42 Depth Top/Bottom of Layer(m) : 46.61/ 46.84 Hole: 378A Depth to Top of Core(m) : 46.00 Core: 1 Depth Top/Bottom Interval(mm): 610/ 840 Sect: 1 Visual Text Description: SAPROPELIC NANNO MARL,MUD;C 5Y4/1-OLIVE GRAY;D HIGGLY DISTURBED;O OLIVE GRAY MUD;H SOFT MARL;Z 00000000 Leg : 42 Depth Top/Bottom of Layer(m) : 46.84/ 46.90 Hole: 378A Depth to Top of Core(m) : 46.00 Core: 1 Depth Top/Bottom Interval(mm): 840/ 900 Sect: 1 Visual Text Description: MUD;C 5G6/1-GREENISH GRAY;D HIGHLY DISTURBED;H SOFT;Z 00000000 Leg : 42 Depth Top/Bottom of Layer(m) : 46.90/ 47.50 Hole: 378A Depth to Top of Core(m) : 46.00 Core: 1 Depth Top/Bottom Interval(mm): 900/1500 Sect: 1 Visual Text Description: NANNO MARL;C 5YR8/1-PINKISH GRAY,5Y6/1-LIGHT OLIVE GRAY,5GY6/1-GREENISH GRAY,10Y4/2-GRAYISH OLIVE;D STRONGLY DISTURBED;O PINKISH GRAY LIGHT OLIVE GRAY AND GREENISH GRAY SOME GRAYISH OLIVE PATCHES;H VERY SOFT;Z 00000000 Leg : 42 Depth Top/Bottom of Layer(m) : 47.50/ 49.00 Hole: 378A Depth to Top of Core(m) : 46.00 Core: 1 Depth Top/Bottom Interval(mm): 00/1500 Sect: 2 Visual Text Description: MARL PEBBLES;C 5YR8/1-PINKISH GRAY,5Y8/1-YELLOWISH GRAY,5Y6/1-LIGHT OLIVE GRAY,5GY6/1-GREENISH GRAY,5G6/1-GREENISH GRAY,N6-MEDIUM LIGHT GRAY, N5-MEDIUM GRAY,5Y4/1-OLIVE GRAY;S MATRIX PINKISH GRAY AND LIGHT OLIVE GRAY NANNO MARL;D 18-35 CM FLUIDAL STRUCTURE VERTICALLY ARRANGED MATRIX SHOWS FLUIDAL STRUCTURE;U BRECCIA COMPOSED OF DIFFERENT MARL PEBBLES ANGULAR TO ROUNDED SOME COHERENT SOME VERY SOFT RELATIVELY CLOSELY PACKED COMPONENTS SIZE OF COMPONENTS A FEW MM TO SOME CM ACROSS;O BRECCIA POSSIBLY SEDIMENTARY BRECCIA,COMPONENTS PINKISH GRAY YELLOWISH GRAY LIGHT OLIVE GRAY GREENISHGRAY MEDIUM LIGHT GRAY MEDIUM GRAY AND OLIVE GRAY MARL;H SOME VERY SOFT;O 141.5-150 CM GEOCHEM SAMPLE;Z 00000000 Leg : 42 Depth Top/Bottom of Layer(m) : 49.00/ 50.50 Hole: 378A Depth to Top of Core(m) : 46.00 Core: 1 Depth Top/Bottom Interval(mm): 00/1500 Sect: 3 Visual Text Description: MARL;C 5GY6/1-GREENISH GRAY,5Y3/2-OLIVE GRAY,10Y4/2-GRAYISH OLIVE, 5YR8/1-PINKISH GRAY;S 8-15 CM IRREGULAR PATCH OF OLIVE GRAY TO GRAYISH OLIVE ORGANIC RICH NANNO MARL (SAPROPEL),46 CM GRADING DOWNWARDS INTO FLUIDALLY DEFORMED,ABOUT 80 CM GREENISH GRAY NANNOMARLS WITH PINKISH GRAY LUMPS (DEFORMED) 135-150 CMGREENISH GRAY MARL FAINT BURROWING;D FLUIDALLY DEFORMED,DRILLING DISTURBANCE ?;U 15-46 CM BRECCIA OF MARL PEBBLES AS 1-3; O 0-8 CM GREENISH GRAY;P 135-150 CM PTEROPODS ?,SAPROPEL;H SOFT;Z 00000000 Leg : 42 Depth Top/Bottom of Layer(m) : 50.50/ 51.20 Hole: 378A Depth to Top of Core(m) : 46.00 Core: 1 Depth Top/Bottom Interval(mm): 00/ 700 Sect: 4 Visual Text Description: NANNO MARL;C 5G6/1-GREENISH GRAY,5GY6/1-GREENISH GRAY;D MODERATELY DISTURBED;O GREENISH GRAY (5G6/1 TO 5GY6/1);H SOFT;Z 00000000 Leg : 42 Depth Top/Bottom of Layer(m) : 51.20/ 51.38 Hole: 378A Depth to Top of Core(m) : 46.00 Core: 1 Depth Top/Bottom Interval(mm): 700/ 880 Sect: 4 Visual Text Description: ORGANIC RICH NANNO MARL (SAPROPEL);C 5Y3/2-OLIVE GRAY;D MODERATELY DISTURBED,RELATIVELY SHARP LOWER BOUNDARY BUT MIXED BY DRILLING WITH UNDERLYING LITHOLOGY UPPER BOUNDARY WAS PROBABLY MORE GRADATIONAL MUCH DISTURBED BY DRILLING;H SOFT;Z 00000000 Leg : 42 Depth Top/Bottom of Layer(m) : 51.38/ 51.81 Hole: 378A Depth to Top of Core(m) : 46.00 Core: 1 Depth Top/Bottom Interval(mm): 880/1310 Sect: 4 Visual Text Description: MARL;C 5B7/1-LIGHT BLUISH GRAY,5G6/1-GREENISH GRAY,5GY6/1-GREENISH GRAY;D DISTURBED;O 88-119 CM LIGHTBLUISH GRAY TO GREENISH GRAY,119-131 CM GREENISH GRAY,131-150 CM GEOCHEM SAMPLE;H SOFT;Z 00000000 Leg : 42 Depth Top/Bottom of Layer(m) : 52.00/ 53.50 Hole: 378A Depth to Top of Core(m) : 46.00 Core: 1 Depth Top/Bottom Interval(mm): 00/1500 Sect: 5 Visual Text Description: NANNO MARL;C 5G8/1-LIGHT GREENISH GRAY,5G6/1-GREENISH GRAY,5Y5/2-LIGHT OLIVE GRAY,5GY6/1-GREENISH GRAY,N5-MEDIUM GRAY,5GY8/1-LIGHT GREENISH GRAY, 5YR6/1-LIGHT BROWNISH GRAY,5B7/1-LIGHT BLUISH GRAY,N6-MEDIUMLIGHT GRAY, 10Y6/2-PALE OLIVE;S 22-28 CM LIGHT OLIVEGRAY RICHER IN ORGANIC MATTER SMALL CHONDRITES 28-31 CM GREENISH GRAY SMALL CHONDRITES 61-78 CM GREENISH GRAY TO LIGHT GREENISH GRAY NANNO MARLSTONE SLIGHTLY MOTTLED MEDIUM GRAY 104-107 CM LIGHT OLIVE GRAY NANNO MARL BURROWED BY CHONDRITES PALE OLIVE;S 107-109 CM OLIVE GRAY NANNO MARL WITH PALE OLIVE BURROWS 109-111 CM LIGHT OLIVE NANNO MARL WITH PALE OLIVE BURROWS 111-115 CM PALE OLIVE TO LIGHT OLIVE GRAY NANNO MARL WITH SOME OLIVE GRAY BURROWS 130-138 CM LIGHT OLIVE GRAY TO PALE OLIVE CHONDRITES 146-150CM LIGHT BLUISH GRAY TO GREENISH GRAY NANNO MARL SOMEWHAT MOTTLED;D SLIGHTLY DISTURBED;U 91-104 CM SMALL SLUMP ? UNIT LIGHT OLIVE GRAY AND LIGHT BLUISH GRAY TO LIGHT GREENISH GRAY DEFORMED NANNO MARL WITH DEFORMED PEBBLES OF MEDIUM LIGHT GRAY AND LIGHT;U GREENISH GRAY NANNO MARL;O 0-22 CM LIGHT GREENISHGRAY TO GREENISH GRAY 31-61 CM GREENISH GRAY NANNO MARL MEDIUM GRAY PATCHES 78-88 CM GREENISH GRAY SOMEMEDIUM GRAY SHADES 88-91 CM LIGHT BROWNISH GRAY 115-130 CM LIGHT BLUISH GRAY TO GREENISH GRAY 138-143 CM LIGHT BLUISH GRAY TO GREENISH GRAY 143-146 CM LIGHT OLIVE GRAY TO PALE OLIVE;H SOFT;Z 00000000 Leg : 42 Depth Top/Bottom of Layer(m) : 293.00/ 293.42 Hole: 378A Depth to Top of Core(m) : 293.00 Core: 3 Depth Top/Bottom Interval(mm): 00/ 420 Sect: 0 Visual Text Description: NANNO MARLSTONE;C 5G6/1-GREENISH GRAY,5B7/1-LIGHTBLUISH GRAY, 5GY6/1-GREENISH GRAY,5Y5/2-LIGHT OLIVE GRAY,5Y3/2-OLIVE GRAY;S 0-3 CM GREENISH GRAY LIMESTONE WITH SMALL PATCHES OF ORGANIC MATTER (PYRITE), 29-13 CM LIGHT OLIVE GRAY GRADING UPWARDS INTO GREENISHGRAY INTENSELY TO MODERATELY BURROWED,42-29 CM OLIVE GRAY GRADING UPWARDS INTO LIGHT OLIVE GRAY BURROWED,BURROWS PARTLY PLANOLITES VERY FINE CHONDRITES;D 2-13 CM DISTURBED;M PATCHES OF ORGANIC MATTER (PYRITE);P SAPROPELS;H HARD Leg : 42 Depth Top/Bottom of Layer(m) : 293.46/ 294.02 Hole: 378A Depth to Top of Core(m) : 293.00 Core: 3 Depth Top/Bottom Interval(mm): 40/ 600 Sect: 1 Visual Text Description: NANNO MARLSTONE;C 5Y3/2-OLIVE GRAY,5GY6/1-GREENISH GRAY,5G6/1-GREENISH GRAY,5Y3/2-OLIVE GRAY,5Y5/2-LIGHT OLIVE GRAY;S 4-6 CM OLIVE GRAY MIXED WITH UNDERLYING LITHOLOGY BY BURROWING 6-60 CM GREENISH GRAY (5GY6/1 TO 5G6/1) NANNO MARLSTONE BURROWED SOME BURROWS FILLED BY OLIVE GRAY MARLSTONE 10 CM ZOOPHYCUS 18 CM 19 CM AND 20 CM PLANOLITES GREENISH GRAY 25 CM PLANOLITES FILLED WITH OLIVE GRAY MARLSTONE 55 CM PLANOLITES OLIVE GRAY;H HARD;Z 33239000.3450.3850 Leg : 42 Depth Top/Bottom of Layer(m) : 294.02/ 294.10 Hole: 378A Depth to Top of Core(m) : 293.00 Core: 3 Depth Top/Bottom Interval(mm): 600/ 680 Sect: 1 Visual Text Description: NANNO MARL SAPROPELIC;C 5Y3/2-OLIVE GRAY,5Y5/2-LIGHT OLIVE GRAY;S UPPER SURFACE GRADATIONAL AND BURROWED CHONDRITES (SMALL),OLIVE GRAY GRADING INTO LIGHTOLIVE GRAY;D LOWER BOUNDARY DISTURBED BY DRILLING;HSOFT;Z 12231210 Leg : 42 Depth Top/Bottom of Layer(m) : 294.10/ 294.92 Hole: 378A Depth to Top of Core(m) : 293.00 Core: 3 Depth Top/Bottom Interval(mm): 680/1500 Sect: 1 Visual Text Description: NANNO MARLSTONE;C 5GY6/1-GREENISH GRAY,5G6/1-GREENISH GRAY,5Y5/2-LIGHT OLIVE GRAY;S 68-145 CM GREENISH GRAY FAINTLY MOTTLED BY BURROWING 145-150 CM LIGHTOLIVE GRAY BURROWED (TOP OF CYCLE IN 3-2),71 CM 74 CM AND 78 CM ZOOPHYCUS;H HARD;Z 00000000 Leg : 42 Depth Top/Bottom of Layer(m) : 294.92/ 296.42 Hole: 378A Depth to Top of Core(m) : 293.00 Core: 3 Depth Top/Bottom Interval(mm): 00/1500 Sect: 2 Visual Text Description: NANNO MARLSTONE;C 5Y3/2-OLIVE GRAY,5Y5/2-LIGHT OLIVE GRAY,5GY6/1-GREENISH GRAY,5G6/1-GREENISH GRAY;S 0-20 CM OLIVE GRAY TO LIGHT OLIVE GRAY ORGANIC RICH MARLSTONE UPPER PART BURROWED LOWER BOUNDARY IRREGULAR BY BURROWING 16 CM ZOOPHYCUS CROSSED BY YOUNGER LARGE BURROW 25 CM ZOOPHYCUS ? 40 CM 43 CM AND 45 CM LIGHT OLIVE GRAY COMPOSITE BURROWS 20-150 CM GREENISH GRAY (5GY6/1 TO 5G6/1) NANNO MARLSTONE MOTTLED BY BURROWING (MODERATE);D 117-150 CM DISTURBED LAMINATION CAUSED BY ROTATION DURING DRILLING;H HARD; Z 00000000 Leg : 42 Depth Top/Bottom of Layer(m) : 296.42/ 297.74 Hole: 378A Depth to Top of Core(m) : 293.00 Core: 3 Depth Top/Bottom Interval(mm): 00/1320 Sect: 3 Visual Text Description: NANNO MARLSTONE;C 5G6/1-GREENISH GRAY,5GY6/1-GREENISH GRAY,5Y3/2-OLIVE GRAY,5Y5/2-LIGHT OLIVE GRAY;S 2 CM COMPOSITE PLANOLITES 15 CM SMALL CHONDRITES FILLED WITH DARK SEDIMENT 15-21 CM OLIVE GRAY TO LIGHT OLIVE GRAY MARLSTONE ORGANIC RICH WITH BURROWS (GREENISH GRAY) PLANOLITES CHONDRITES 35 CM OLIVE GRAY TOLIGHT OLIVE GRAY BED WITH CHONDRITES 38 CM ZOOPHYCUS 21-53 CM GREENISH GRAY (5G6/1 TO 5GY6/1) MARLSTONEWITH BURROWS PARTIALLY FILLED BY OLIVE GRAY TO LIGHT OLIVE GRAY MARLSTONE;S 53-61 CM OLIVE GRAY TO LIGHT OLIVE GRAY ORGANIC RICH MARLSTONE STRONGLY BURROWED ?PLANOLITES TINY CHONDRITES FILLED BY LIGHT LITHOLOGY FROM ABOVE 62 CM 64 CM AND 65 CM ZOOPHYCUS 80 CM OLIVE GRAY BURROW 61-93 CM GREENISH GRAY (5GY6/1 TO 5G6/1) SLIGHT TO MODERATE BURROWING 99 CM 103 CM 107 CM AND 115 CM ZOOPHYCUS 93-94 CM AND 95-96 CM OLIVE GRAY TO LIGHT OLIVE GRAY ORGANIC-RICH NANNO MARL BURROWED 100-132 CM GREENISH GRAY (5G6/1 TO 5GY6/1) MARLSTONE MODERATELY BURROWED;D 21-53 CM BURROWS ROTATED BY DRILLING;D SLIGHTLY DISTURBED,SLIGHT ROTATION OF SINGLE PIECES ALONG PLANES PERPENDICULAR TO CORE (DARK LAMINAE)THAT IS AT 44 CM;O 0-15 CM GREENISH GRAY (5G6/1 TO 5GY6/1),132-150 CM GEOCHEM SAMPLE;H HARD;Z 00000000 Leg : 42 Depth Top/Bottom of Layer(m) : 297.92/ 299.42 Hole: 378A Depth to Top of Core(m) : 293.00 Core: 3 Depth Top/Bottom Interval(mm): 00/1500 Sect: 4 Visual Text Description: NANNO MARLSTONE;C 5GY6/1-GREENISH GRAY,5G6/1-GREENISH GRAY,5Y3/2-OLIVE GRAY,5Y5/2-LIGHT OLIVE GRAY;S 9 CM GRADED BOUNDARY UPWARDS 9-26 CM OLIVE GRAY TO LIGHT OLIVE GRAY MARLSTONE BURROWED WITH BURROWS FILLED BY GREENISH GRAY MARLSTONE CHONDRITES PLANOLITES 29-43 CM AND 51-53 CM OLIVE GRAY TO LIGHT OLIVE GRAYMARLSTONE WITH BURROWS FILLED BY GREENISH GRAY MARLSTONE CHONDRITES PLANOLITES ZOOPHYCUS 43-51 CM AND 53-73 CM GREENISH GRAY (5GY6/1 TO 5G6/1) SLIGHTLY BURROWED;S 73-83 CM GREENISH GRAY (5GY6/1 TO 5G6/1) MARLSTONE AND ORGANIC OLIVE GRAY TO LIGHT OLIVE GRAY MARLSTONE MIXED BY BURROWING 102-107 CM GRADATIONAL UPPER BOUNDARY BURROWED OLIVE GRAY TO LIGHT OLIVE GRAY SHARP LOWER BOUNDARY 107.5 CM SOME BURROWS FILLED WITH OLIVE GRAY 111 CM ZOOPHYCUS 107-150 CM GREENISH GRAY (5GY6/1 TO 5G6/1) MARLSTONE MODERATELY BURROWED;D SLIGHTLY DISTURBED LAMINAE FROM ROTATION DURING DRILLING;O 0-9 CM GREENISH GRAY (5G6/1 TO 5GY6/1) 26-29 CM GREENISH GRAY (5GY6/1);H HARD;Z 00000000 Leg : 42 Depth Top/Bottom of Layer(m) : 299.42/ 300.83 Hole: 378A Depth to Top of Core(m) : 293.00 Core: 3 Depth Top/Bottom Interval(mm): 00/1410 Sect: 5 Visual Text Description: NANNO MARLSTONE;C 5G6/1-GREENISH GRAY,5Y5/2-LIGHTOLIVE GRAY,N5-MEDIUM GRAY,5Y3/2-OLIVE GRAY,5GY6/1-GREENISH GRAY,10Y6/2-PALE OLIVE;S 0-14 CM GREENISH GRAY TO LIGHT OLIVE GRAY MIXED BY BURROWING (INCLUDINGCOMPOSITE BURROWS) 21 CM COMPLEX BURROWS FILLED WITH OLIVE GRAY SEDIMENT FROM ABOVE AND REBURROWED BY GREENISH GRAY BURROWS 14-73 CM GREENISH GRAY MARLSTONE SLIGHTLY MOTTLED WITH MEDIUM GRAY 73-85 CM OLIVE GRAY TO LIGHT OLIVE GRAY MIXED WITH PALE OLIVE TO GREENISH GRAY SEDIMENT BY LARGE UNIDENTIFIED BURROWS;S 85-102.5 CM GREENISH GRAY SLIGHTLY MOTTLED MEDIUMGRAY 102.5-111 CM LIGHT OLIVE GRAY LARGE ZOOPHYCUS BURROWS 111-130 CM TOP SOME BURROWS FILLED WITH OVERLYING LITHOLOGY 130-141 CM LIGHT OLIVE GRAY NANNO MARLSTONE MIXED WITH LIGHTER GRAY NANNO MARLSTONE BY INTENSE BURROWING LARGE UNIDENTIFIED BURROWS AND TINYCHONDRITES;D LAMINAE DARK FROM ROTATION DURING DRILLING IN WHOLE OF CORE,SLIGHTLY DISTURBED;O 141-150 CM GEOCHEM SAMPLE;H HARD;D 102.5CM BOUNDARY DISTURBED;Z 00000000 Leg : 42 Depth Top/Bottom of Layer(m) : 300.92/ 302.42 Hole: 378A Depth to Top of Core(m) : 293.00 Core: 3 Depth Top/Bottom Interval(mm): 00/1500 Sect: 6 Visual Text Description: NANNO MARLSTONE;C 5GY6/1-GREENISH GRAY,5Y3/2-OLIVE GRAY,5Y5/2-LIGHT OLIVE GRAY;S 0-39 CM GREENISH GRAY MARLSTONE FAINT MOTTLING BY BURROWING 39-54 CM OLIVE GRAY TO LIGHT OLIVE GRAY ORGANIC RICH MARLSTONE BURROWS FILLED WITH GREENISH GRAY LITHOLOGY FROM ABOVE 54-66 CM BURROWS OF CHONDRITES-TYPE FILLED WITH OLIVE GRAY LITHOLOGY FROM ABOVE 66-126 CM GREENISH GRAY FAINT MOTTLING BY BURROWING 136-140 CM AND 140.5-150 CM GREENISH GRAY MARLSTONE MOTTLED BY MODERATE TOINTENSE BURROWING;D 0-126 CM AND 136-150 CM DEFORMATION SLIGHT LAMINAE FROM ROTATION DURING DRILLING 126-136 CM OLIVE GRAY TO LIGHT OLIVE GRAY MARLSTONE MIXED BY DRILLING WITH GREENISH GRAY NANNO MARLSTONE;H HARD;Z 00000000 Leg : 42 Depth Top/Bottom of Layer(m) : 302.50/ 302.55 Hole: 378A Depth to Top of Core(m) : 302.50 Core: 4 Depth Top/Bottom Interval(mm): 00/ 50 Sect: 1 Visual Text Description: SAPROPELIC MARLSTONE;C 5Y3/2-OLIVE GRAY,5Y5/2-LIGHT OLIVE GRAY, 5GY6/1-GREENISH GRAY;S LAMINATED OLIVEGRAY TO LIGHT OLIVE GRAY WITH MINOR LAMINAE OF GREENISH GRAY;D MODERATELY DISTURBED;H HARD;Z 00000000 Leg : 42 Depth Top/Bottom of Layer(m) : 302.55/ 302.60 Hole: 378A Depth to Top of Core(m) : 302.50 Core: 4 Depth Top/Bottom Interval(mm): 50/ 100 Sect: 1 Visual Text Description: NANNO MARLSTONE;C 5GY6/1-GREENISH GRAY,5G6/1-GREENISH GRAY;D MODERATELY DISTURBED;H HARD;Z 00000000 Leg : 42 Depth Top/Bottom of Layer(m) : 302.60/ 304.00 Hole: 378A Depth to Top of Core(m) : 302.50 Core: 4 Depth Top/Bottom Interval(mm): 100/1500 Sect: 1 Visual Text Description: GYPSUM;C 5Y7/2-YELLOWISH GRAY,5Y5/2-LIGHT OLIVE GRAY,5Y3/2-OLIVE GRAY;M COARSELY CRYSTALLINE SELENITE,ORIENTATION OF SWALLOW-TAIL GYPSUM IS PERPENDICULAROR AT HIGH ANGLES TO BEDDING CRYSTALS UP TO 8 CM LONG VUGS;O YELLOWISH GRAY LIGHT OLIVE GRAY TO OLIVE GRAY;H HARD;Z 33233000.3152 Leg : 42 Depth Top/Bottom of Layer(m) : 320.45/ 321.50 Hole: 378A Depth to Top of Core(m) : 320.00 Core: 5 Depth Top/Bottom Interval(mm): 450/1500 Sect: 1 Visual Text Description: GYPSUM;C 5Y7/2-YELLOWISH GRAY,5Y6/4-DUSKY YELLOW,5Y5/2-LIGHT OLIVE GRAY, 5Y3/2-OLIVE GRAY;M COARSELY CRYSTALLINE SELENITIC SWALLOW TAIL ORIENTED AT HIGH ANGLES TO BEDDING CRYSTALLS UP TO 8 CM AVERAGE 5-6 CMLONG VUGULAR POROSITY;H HARD;Z 33233000.3152 Leg : 42 Depth Top/Bottom of Layer(m) : 330.53/ 331.50 Hole: 378A Depth to Top of Core(m) : 330.00 Core: 6 Depth Top/Bottom Interval(mm): 530/1500 Sect: 1 Visual Text Description: GYPSUM;C -WHITE,5Y7/2-YELLOWISH GRAY,5Y6/4-DUSKY YELLOW,5Y5/2-LIGHT OLIVE GRAY,5Y3/2-OLIVE GRAY;M COARSELY CRYSTALLINE SELENITIC ORIENTATION OF SWALLOW-TAIL CRYSTALS IS AT HIGH ANGLES WITH BEDDING RARE VUGGY POROSITY;H HARD;Z 33233000.3152 |
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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