Leg : 71 Top/Bottom Interval(mm): 0/ 900 Analyst: Bornhold, B.
Hole: 513A Sample Midpoint (m) : 381.40
Core: 35 Top of Core Depth (m) : 380.50
Sect: 1 Top of Section Depth(m): 380.50
LITHOLOGY: FINE-GRAINED BASALT;
Piece No. : PCE 2 (5-17), 3 (17-20), 4 (22-27), 5 (24-39),
6 (36-42), 7 (35-41), 8A (40-50), 8B (48-59),
9 (62-90);
Texture : INTERVAL (4-20) IS FINE-GRAINED, INTERVAL (4-5.5)
IS INTERLAMINATED GLASS AND BAKED SEDIMENT,
INTERVAL (5.5-20) IS PROGRESSIVELY MORE COARSE-
GRAINED WITH DEPTH, SMALL GLASSY ZONE AT BASE OF
UNIT (5.5-20), INTERVAL (23-26) IS GLASS AND WHITE
CARBONATE, INTERVAL (26-59) IS FINE-GRAINED BASALT
AND MORE COARSE-GRAINED IN INTERIOR OF UNIT
(PROGRESSIVE INCREASE IN PHENOCRYSTS AND GRAIN SIZE
AWAY FROM UPPER AND LOWER GLASSY ZONES), INTERVAL
(59-60) IS THIN CARBONATE (WHITE) OVER BLACK GLASS,
INTERVAL (65-66) IS A CONTINUATION OF ABOVE GLASSY
ZONE, INTERVAL (66-71) IS FINE AND SLIGHTLY MORE
COARSE-GRAINED AND BECOMES MORE COARSE-GRAINED WITH
DEPTH, INTERVAL (71-90) IS FINE-MEDIUM GRAINED;
Structure : IN INTERVAL (4-5.5) ARE CARB VEINLETS, IN INTERVAL
(5.5-20) THERE IS VERY LITTLE FRACTURING, IN
INTERVAL (26-59) VERY FEW FRACTURES, THESE FRACTURES
ARE YELLOWISH AND NARROW FRACTURES WITH CARB(<<1MM),
CONSPICUOUS INTERSECTING FRACTURES AT 38CM WITH
THIN CARBONATE VEIN FILLING, IN INTERVAL (59-60)
GLASS FRACTURED WITH SMALL CARB FILLED VEINLETS,
INTERVAL (66-71) IS INTERLAYERED;
Comments : INTERVAL (4-5.5) CONTAINS BAKED SEDIMENT;
Phenocrysts:
Size(mm): <2
IN INTERVAL (5.5-20) CONSPICUOUS PHENOS, INTERIOR
OF INTERVAL (20-59) HAS AN INCREASE OF PHENOS;
Replacement: CARBONATE
Leg : 71 Top/Bottom Interval(mm): 0/ 30 Analyst: Bornhold, B.
Hole: 513A Sample Midpoint (m) : 382.03
Core: 36 Top of Core Depth (m) : 382.00
Sect: 1 Top of Section Depth(m): 382.00
LITHOLOGY: GRANITIC(?) PEBBLE;
Piece No. : PCE 10 (1-3);
Leg : 71 Top/Bottom Interval(mm): 40/1480 Analyst: Bornhold, B.
Hole: 513A Sample Midpoint (m) : 383.48
Core: 36 Top of Core Depth (m) : 382.00
Sect: 1 Top of Section Depth(m): 382.04
LITHOLOGY: FINE-GRAINED BASALT;
Piece No. : PCE 11 (4-7), 12 (9-21), 13 (21-23), 14 (22-35),
15 (36-42), 16 (42-46), 17 (46-57), 18 (55-65),
19 (66-79), 20 (79-87), 21 (83-90), 22 (90-98),
23 (100-110), 24 (111-122), 25 (122-128),
26 (130-141), 27 (132-140), 28 (140-148);
Texture : INTERVAL (8-111) IS FINE-GRAINED, INTERVAL (8-8.5)
IS A GLASSY ZONE GRADING DOWNWARDS INTO VERY FINE-
GRAINED BASALT (8.5-10CM) (GLASSY ZONE IS
HORIZONTAL), INTERVAL (10-16) GRADES DOWNWARD INTO
SLIGHTLY MORE COARSELY GRAINED BASALT, INTERVAL
(16-111) IS UNIFORM FINE-MEDIUM GRAINED BASALT,
INTERVAL (111-116) IS A GLASSY ZONE, INTERVAL
(116-148) IS FINE-GRAINED BASALT;
Structure : IN INTERVAL (10-16) VERY FEW FRACTURES AND VEINLETS,
IN INTERVAL (8.5-12) MINOR VEINLETS OF CARB
(<1.5MM), IN INTERVAL (111-116) MINOR FRACTURING,
PROMINENT CALCITE VEINLET AT (139-145CM) (3-5MM
THICK);
Vesicles :
Location: Filling: CALCITE
LARGE CALCITE FILLED VUG AT 111-113CM;
Replacement: CARBONATE
Leg : 71 Top/Bottom Interval(mm): 0/1500 Analyst: Bornhold, B.
Hole: 513A Sample Midpoint (m) : 385.00
Core: 36 Top of Core Depth (m) : 382.00
Sect: 2 Top of Section Depth(m): 383.50
LITHOLOGY: FINE-GRAINED BASALT;
Piece No. : PCE 29 (2-16), 30 (15-26), 31 (25-43), 32 (36-66),
33 (65-75), 34 (74-84), 35 (84-95), 36 (94-106),
37 (106-117), 38 (115-150);
Texture : FINE-GRAINED;
Structure : PROMINENT NEAR VERTICAL CALCITE FILLED VEIN AT
43-62CM, FRACTURES AND VEINLETS PRESENT;
Alteration : MINOR ALTERATION ALONG SOME FRACTURES AND
VEINLETS;
Replacement: CALCITE
Leg : 71 Top/Bottom Interval(mm): 0/1150 Analyst: Bornhold, B.
Hole: 513A Sample Midpoint (m) : 386.15
Core: 36 Top of Core Depth (m) : 382.00
Sect: 3 Top of Section Depth(m): 385.00
LITHOLOGY: FINE-GRAINED BASALT;
Piece No. : PCE 39 (0-12), 40 (12-18), 41 (18-26),
42 (27-32), 43 (32-56), 44 (57-67), 45 (69-90),
46 (90-100), 47 (98-110), 48 (109-115);
Texture : FINE-GRAINED;
Structure : MINOR FRACTURING AND CALCITE FILLED VEINS (<1.5MM);
Alteration : MINOR ALTERATION ALONG SOME VEINLETS AND
FRACTURES;
Replacement: CALCITE
Leg : 71 Top/Bottom Interval(mm): 1160/1330 Analyst: Bornhold, B.
Hole: 513A Sample Midpoint (m) : 386.33
Core: 36 Top of Core Depth (m) : 382.00
Sect: 3 Top of Section Depth(m): 386.16
LITHOLOGY: BASALTIC GLASS AND BRECCIA;
Piece No. : PCE 49 (116-118), 50 (119-123), 51 (124-127),
52 (128-132);
Texture : INTERVAL (116-133) IS A GLASSY ZONE, INTERVAL
(128-133) IS MIXED GLASS AND BRECCIA ZONE MADE OF
BASALTIC FRAGMENTS (0.5-3CM) IN A CALCITE MATRIX;
Vesicles :
Location: Filling: CALCITE
PROMINENT VUG PARTIALLY FILLED WITH CALCITE
CRYSTALS AT 117CM;
Replacement: CALCITE
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