Table T5. Igneous core description logs, Holes 1149B, 1149C, and 1149D.

Core,
section		 Piece
numbers		 Analysis Depth (mbsf)   Interval
(cm)		   Length (cm) Subunit
number		 Lithology Texture Structure Color Comments Chilled margin present
   
Top Bottom     Interval Unit Subunit Top Base
185-1149B-
















29R-1
PP 406.80 407.77
0-97
97 — — — Sediment — Sediment Pink Carbonate-rich sediment — N
29R-1
— 407.77 408.28
97-148
51 942 78 1-1 Aphyric basalt brecciawith sediment cement Microcrystalline Basalt breccia sediment cement Dark bluish gray and reddish gray Contact with overlying sediment not observed, altered basalts with halos around veins N N
29R-2 1 TSB(2), PP 408.28 408.55
0-27
27 942 78 1-1 Pink carbonate cement Microcrystalline Dark bluish gray and reddish gray with dark reddish gray veins Basalt breccia has clasts up to 20 cm and fine-grained pink sedimentary carbonate cement N N
29R-2 2-10 — 408.55 409.23
27-95
68 942 68 1-2 Aphyric basalt Microcrystalline Pillow/flow Dark bluish gray and reddish gray Basalt pieces with halos, rubbly interval N N
29R-2 11-14 TSB 409.23 409.68
95-140
45 942 45 1-3 Aphyric basalt Hypocrystalline to microcrystalline Pillow Dark bluish gray and reddish gray Dark bluish gray halos around dusky red veins and reddish gray altered basalt, chill at base N Y
29R-3 1-3 — 409.68 410.11
0-43
43 942 43 1-4 Aphyric basalt Fine grained to microcrystalline Pillow Dark bluish gray and reddish gray Dark dusky red veins, dark bluish gray halos, reddish gray altered basalt, chill at base N Y
29R-3 4-8 XRF 410.11 410.62
43-94
51 942 51 1-5 Aphyric basalt Microcrystalline Pillow Dark bluish gray and reddish gray Dark dusky red veins, dark bluish gray halos, reddish gray altered basalt, rubbly N N
30R-1 1-9 — 416.40 416.95
0-55
55 942 55 1-6 Aphyric basalt Microcrystalline Pillow Dark bluish gray and reddish gray Fe oxyhydroxides between reddish gray altered basalt and dark bluish gray halos N N
30R-1 10A-12 — 416.95 417.44
55-104
49 942 49 1-7 Aphyric basalt Microcrystalline basalt Pillow breccia Dark greenish grey and gray, dusky red Carbonate cement with <1-cm dusky red and dark green fragments, chilled piece at base N Y
30R-1 13-19 — 417.44 417.90
104-150
46 942 46 1-8 Aphyric basalt Fine grained to microcrystalline Pillow Dark bluish gray and reddish gray Dark greenish gray veins, halos present; altered basalt is dark dusky red in some pieces N N
30R-2 1-4 XRF 417.90 419.02
0-112
112 942 112 1-9 Aphyric basalt Fine grained to microcrystalline Pillow/flow Dark bluish gray and reddish gray Lower rim of pillow is subvertical and highly irregular N Y
30R-2 4-7 — 419.02 419.25
112-135
23 942 40 1-10 Aphyric basalt pillows, interpillow breccia Microcrystalline basalt Pillow breccia Dark reddish gray and dark greenish gray, altered pillow rims white carbonate Carbonate infilling irregular chilled pillow margin N N
30R-3 1 — 419.25 419.42
0-17
17 942 40 1-10 Carbonate-bearing cement Coarse carbonate
Various chills and pillow rims, brecciated glassy contact between two pillows at base of subunit N N
30R-3 2-9 — 419.42 419.94
17-69
52 942 52 1-11 Aphyric basalt Microcrystalline Pillow Dark reddish gray Top of Subunit 1-11 is rubbly, chill at top Y N
31R-1 1-22 — 426.00 427.20
0-120
120 942 120 1-12 Breccia Microcrystalline to hypocrystalline Pillow breccia Dark greenish gray and gray, dusky red Green concentric alteration in rounded basalt fragments, red matrix, various glassy chills, rubbly N N
31R-1 23-26 — 427.20 427.50
120-150
30 942 40 1-13 Aphyric basalt Microcrystalline Pillow Gray to light brownish gray Dusky red veins and carbonate veins, dark bluish gray halos, reddish gray altered basalt, rubbly N N
31R-2 1 — 427.50 427.60
0-10
10 942 40 1-13 Aphyric basalt Microcrystalline Gray to light brownish gray Fractured carbonate veins, dark bluish gray halos, reddish gray altered basalt N N
32R-1 1-4 — 435.60 436.19
0-59
59 942 59 1-14 Aphyric basalt Microcrystalline Pillow Reddish gray to greenish gray Dusky red veins, carbonate veins, dark bluish gray halos, reddish gray altered basalt, rubbly N Y?
32R-1 5-17 — 436.19 437.03
59-143
84 942 84 1-15 Aphyric basalt Microcrystalline to fine grained at base Pillow/flow Reddish gray to greenish gray Dusky red veins, carbonate veins, dark bluish gray halos, reddish gray altered basalt, rubbly Y? N
185-1149C-
















9R-1 — — 397.90 398.41
0-51
51 — — — Sediment - Sediment Beige brown Cherty sediment N N
9R-1 1-8 — 398.41 399.00
51-110
59 399 59 1-1 Aphyric basalt Microcrystalline Pillow Dark bluish gray, reddish gray Contact with overlying cherty sediment not observed, altered basalts with halos around veins, rubbly N N
10R-1 1-10 — 407.50 408.22
0-72
72 — 72 1-2 Aphyric basalt Microcrystalline Pillow/flow Dark bluish gray, reddish gray Chilled pillow rim at top, some carbonate veins, dark bluish gray halos, reddish gray altered basalt Y Y
10R-1
 11-16 — 408.22 408.55
72-105
33 — 33 1-3 Aphyric basalt Microcrystalline Pillow Dark bluish gray, reddish gray Chilled pillow rim at top, basalt pieces with halos, contact with carbonate breccia cement at base not chilled Y N
10R-1
 16-22 — 408.55 409.00
105-150
45 — 87 1-4 Breccia Microcrystalline basalt fragments Breccia Dark bluish gray, reddish gray Carbonate breccia matrix with 2.5 to 20 cm subangular to angular microcrystalline basalt fragments N N
10R-2 1-9 — 409.00 409.42
0-42
42 — 87 1-4 Breccia Microcrystalline basalt fragments Breccia Dark bluish gray, reddish gray Carbonate breccia matrix with 2.5 to 20 cm subangular to angular microcrystalline basalt fragments N N
10R-2 9-10 — 409.42 409.52
42-52
10 — 54 1-5 Aphyric basalt Fine grained to microcrystalline Pillow Dark bluish gray, reddish gray Dark dusky red veins, dark bluish gray halos, reddish gray altered basalt, rubbly Y N
11R-1
 1A-3 — 417.10 417.54
0-44
44 — 54 1-5 Aphyric basalt Fine grained to microcrystalline Pillow Dark bluish gray, reddish gray Dark bluish gray halos around dusky red veins, reddish gray altered basalt, chill at base N Y
11R-1
 3-13 — 417.54 418.48
44-138
94 — 94 1-6 Aphyric basalt Fine grained to microcrystalline Pillow/flow Dark bluish gray, reddish gray Altered hyaloclastite at top, dark dusky red veins, dark bluish gray halos, reddish gray altered basalt Y N



















185-1149D-
















5R-1 — — 300.30 300.46
0-16
16 — — — Sediment Fine-grained chert Sediment Red brown Cherty sediment, contact with basement not recovered N N
5R-1 1 — 300.46 300.52
16-22
6 6 — 1 Aphyric basalt Microcrystalline Pillow Dark bluish gray, reddish gray More olivine phenocrysts, different alteration style N N
5R-2 2-5 — 300.52 300.71
22-41
19 747 288 2-1 Aphyric basalt Microcrystalline Flow Dark bluish gray, reddish gray Small pieces with pronounced halos, speckled appearance N N
6R-1 1-21 — 310.00 311.34
0-134
134 —

Aphyric basalt Microcrystalline Flow Reddish gray, bluish gray Red veins, halos, speckled appearance, no chills N N
6R-2 1-11 — 311.34 312.40
0-106
106 —

Aphyric basalt Microcrystalline Flow Reddish gray, bluish gray Very pronounced halos, carbonate veins, no chills N N
7R-1 1-4 — 319.70 319.99
0-29
29 —

Aphyric basalt Microcrystalline Flow Reddish gray, bluish gray Fractured pieces with dark red veins and carbonate veins N N
7R-1 5 — 319.99 320.12
29-42
13 — 13 2-2 Hyaloclastite Hypocrystalline Breccia Dark green Elongate green clasts with red rims, clasts up to 3-4 cm long in a green matrix, cement supported N N
7R-1 6-7 — 320.12 320.26
42-56
14 — 14 2-3 Aphyric basalt Microcrystalline Pillow Reddish gray, bluish gray Two pieces, not oriented; there may be material missing N Y
7R-1 8-9 — 320.26 320.40
56-70
14 — 14 2-4 Aphyric basalt Microcrystalline Pillow Reddish gray, bluish gray Two pieces, not oriented; there may be material missing Y N
7R-1 10 — 320.40 320.45
70-75
5 — 5 2-5 Hyaloclastite Hypocrystalline Breccia Dark green and white Dark green altered glassy clasts; cement is carbonate with some pale greenish clays N N
7R-1 11-20 — 320.45 321.20
75-150
75 — 75 2-6 Aphyric basalt Microcrystalline Pillow/flow Reddish gray, bluish gray Pronounced halos, dark red veins, carbonate veins N N
7R-2 1-6 — 321.20 321.75
0-55
55 — 55 2-7 Aphyric basalt Microcrystalline Pillow/flow Reddish gray, bluish gray Small pieces at top and one fractured piece, pronounced halos, dark red veins, carbonate veins N Y
7R-2 7-16 — 321.75 322.40
55-120
65 — 65 2-8 Aphyric basalt Microcrystalline Pillow/flow Reddish gray, bluish gray 2-cm interpillow material and glass at top, halos, carbonate veins, red veins throughout Y Y
7R-2 16-20 — 322.40 322.64
120-144
24 — 53 2-9 Aphyric basalt Microcrystalline Pillow/flow Reddish gray, bluish gray Rubbly and fractured basalt pieces, chill with small amounts of glass in the top piece Y N
7R-3 1-3 — 322.64 322.93
0-29
29 —

Aphyric basalt Microcrystalline Pillow/flow Reddish gray, bluish gray 1-cm-wide vein with carbonate or recrystallized interpillow material and a very small amount of breccia N N
8R-1 1-15 — 329.30 330.80
0-150
150 — 165 2-10 Aphyric basalt Microcrystalline Flow Reddish gray, bluish gray Pronounced halos, dark red veins, carbonate veins N N
8R-2 1 — 330.80 330.95
0-15
15 —

Aphyric basalt Microcrystalline Flow Reddish gray, bluish gray One fractured piece with pronounced halos, dark red veins, carbonate veins N N
8R-2 2 — 330.95 331.35
15-55
40 713 40 3-1 Aphyric basalt Microcrystalline Pillow Reddish gray, bluish gray 4 cm of interpillow material at top with wavy contact; basalt has a slightly speckled appearance Y Y
8R-2 3 — 331.35 331.40
55-60
5 — 5 3-2 Hyaloclastite Microcrystalline basalt Breccia Dark green and white Glass and altered glass clasts in a carbonate matrix Y Y
8R-2 4-8 — 331.40 331.81
60-101
41 — 41 3-3 Aphyric basalt Microcrystalline Pillow Reddish gray, bluish gray Thin dark red veins, carbonate veins, halos present Y N
8R-2 9-13 — 331.81 332.22
101-142
41 — 41 3-4 Aphyric basalt Microcrystalline, hypocrystalline at base Pillow Reddish gray, bluish gray Thin dark red veins, carbonate veins, halos present Y N
9R-1 1-2 — 338.80 338.90
0-10
10 — 10 3-5 Aphyric basalt Microcrystalline Pillow Reddish gray, bluish gray Subvertical glassy chill on Piece 2, dark red veins, carbonate veins, halos present N Y
9R-1 3-6 — 338.90 339.15
10-35
25 — 25 3-6 Aphyric basalt Microcrystalline Pillow Reddish gray, bluish gray Small pieces with chills near vertical pillow contact or pile of pillows with material not recovered Y Y
9R-1 7-10 — 339.15 339.46
35-66
31 — 31 3-7 Aphyric basalt Microcrystalline Pillow Reddish gray, orange, bluish gray Dark bluish gray halos with orange-brown Fe oxyhydroxide zone adjacent to reddish gray basalt Y Y
9R-1 11-18 — 339.46 339.98
66-118
52 — 52 3-8 Aphyric basalt Microcrystalline Pillow/flow Reddish gray, orange, greenish gray Abundant carbonate veins, horizontal glassy chill at the base Y Y
9R-2 1-4 — 339.98 340.69
0-71
71 — 71 3-9 Aphyric basalt Microcrystalline with fine-grained center Pillow/flow Reddish gray, bluish gray Pronounced halos, abundant dark red veins and carbonate veins, horizontal chill at the base N Y
9R-2 5-16 — 340.69 341.48
71-150
79 — 79 3-10 Aphyric basalt Microcrystalline with fine-grained center Pillow/flow Reddish gray, bluish gray Glassy chill on pieces at top and base, thin dark red veins, carbonate veins, halos present Y Y
9R-3 1-10 — 341.48 342.13
0-65
65 — 92 3-11 Aphyric basalt Microcrystalline Pillow/flow Reddish gray, bluish gray, gray Dark bluish gray halos with orange-brown Fe oxyhydroxide zone adjacent to reddish gray basalt, carbonate, red veins N N
10R-1 1-4 — 348.40 348.67
0-27
27 —

Aphyric basalt Microcrystalline Pillow/flow Reddish gray, bluish gray, gray Dark bluish gray halos with orange brown Fe oxyhydroxide zone adjacent to reddish gray basalt, carbonate, red veins N N
10R-1 5 — 348.67 348.73
27-33
6 — 6 3-12 Hyaloclastite Hypocrystalline altered basalt clasts Breccia Dark greenish gray, white Breccia with carbonate matrix and light greenish gray clays, clasts up to 5 cm N N
10R-1 6A-6C — 348.73 349.47
33-107
74 — 74 3-13 Aphyric basalt Microcrystalline with fine-grained center Pillow/flow Greenish gray One coherent piece, halos present but more diffuse N N
10R-1 7-8 — 349.47 349.70
107-130
23 — 23 3-14 Aphyric basalt Microcrystalline Pillow Dark greenish gray white, gray Contains some brecciated pieces with carbonate cement, mix of large fractured clasts and small ones N N
10R-1 9-10 — 349.70 349.90
130-150
20 — 35 3-15 Aphyric basalt Microcrystalline Pillow Greenish gray to gray Pronounced halos, dark red veins, carbonate veins N N
10R-2 1 — 349.90 350.05
0-15
15 —

Aphyric basalt Microcrystalline Pillow Greenish gray to gray Pronounced halos, dark red veins, carbonate veins N N
10R-2 2-7 — 350.05 350.49
15-59
44 — 56 3-16 Aphyric basalt Microcrystalline Pillow Greenish gray to gray Rubbly pieces, some brecciated pieces with carbonate cement N N
11R-1 1-2 — 357.90 358.02
0-12
12 —

Aphyric basalt Microcrystalline Pillow Greenish gray to gray Rubbly pieces, some brecciated pieces with carbonate cement N N
11R-1 3-6 — 358.02 358.34
12-44
32 — 32 3-17 Hyaloclastite Microcrystalline to hypocrystalline clasts, fine clay cement Breccia Dark green with weak red alteration Variable clast size 1 mm up to 5 cm, dark grayish green altered glass clasts with light greenish gray matrix N N
11R-1 7-14 — 358.34 359.24
44-134
90 652 233 4-1 Aphyric basalt Microcrystalline to hypocrystalline Flow Variable gray to very dark gray ?Flow top, highly altered with irregular carbonate-filled void spaces, rusty brown to dark brown veins N N
11R-2 1-10 — 359.24 360.67
0-143
143 —

Aphyric basalt Microcrystalline to hypocrystalline Flow Variable gray to very dark gray Four thin <5-cm intervals of fine breccia with carbonate cement, highly altered with irregular carbonate-filled voids N N
11R-3 1-6 — 360.67 362.14
0-147
147 — 147 4-2 Breccia Microcrystalline to hypocrystalline clasts, coarse cement Breccia Gray to very dark gray, white One piece (#4) is similar to hyaloclastite in Subunit 3-17; breccia has subangular frayed clasts of variable size N N
11R-4 1-6 — 362.14 362.69
0-55
55 — 91 4-3 Aphyric basalt Microcrystalline Flow Variable gray to very dark gray Pronounced halos present in some pieces, dark red veins, carbonate veins N N
12R-1 1-9 — 367.40 367.76
0-36
36 —

Aphyric basalt Microcrystalline Flow Reddish gray, bluish gray, gray Rubbly subunit with some brecciated pieces, several carbonate-filled voids N N
12R-1 9-13 — 367.76 368.07
36-67
31 — 31 4-4 Aphyric basalt Microcrystalline Pillow Reddish gray, bluish gray, gray Rubbly subunit with some brecciated pieces, several carbonate-filled voids Y N
13R-1 1-2 — 377.00 377.26
0-26
26 — 26 4-5 Hyaloclastite Microcrystalline to hypocrystalline clasts, fine clay cement Breccia Dark green with weak red alteration Dark greenish gray matrix, variable clast size 1 mm to 5 cm; clasts are subrounded altered glass N N
13R-1 3-12 — 377.26 377.83
26-83
57 — 57 4-6 Aphyric basalt Microcrystalline Pillow Variable gray to very dark gray Fractured rubbly pieces; some are brecciated; carbonate veins present; basalt has a mottled appearance N N
13R-1 13-16 — 377.83 378.08
83-108
25 — 25 4-7 Hyaloclastite Microcrystalline to hypocrystalline clasts, fine clay matrix Breccia Dark green and very dark gray Clast-supported hyaloclastite with small green altered glass clasts and very dark gray basalt clasts up to 5 cm N N
13R-1 17-22 — 378.08 378.50
108-150
42 — 42 4-8 Aphyric basalt Microcrystalline Pillow Variable gray to very dark gray Fractured rubbly pieces, highly altered with mottled appearance, irregular carbonate-filled vesicles up to 1 cm long N N
14R-1 1-2 — 386.60 386.72
0-12
12 649 12 5-1 Aphyric basalt Microcrystalline Pillow Gray to bluish gray Rubbly pieces, halos present in some pieces, thin dark red veins, carbonate veins N N
14R-1 3-4 — 386.72 386.84
12-24
12 — 12 5-2 Breccia Microcrystalline to hypocrystalline Breccia Dark greenish gray and white Hyaloclastite with small green altered glass clasts and very dark gray basalt clasts up to 5 cm, carbonate and clay matrix N N
14R-1 5-8 — 386.84 387.05
24-45
21 — 21 5-3 Aphyric basalt Microcrystalline Pillow Gray to bluish gray Rubbly pieces, halos present in some pieces, thin dark red veins, carbonate veins N N
15R-1 1-3 — 396.30 396.47
0-17
17 — 17 5-4 Breccia Microcrystalline Breccia Greenish gray to bluish gray Small rubbly hyaloclastite pieces with green altered glass clasts and very dark gray basalt clasts, green clay cement N N
15R-1 4-15 — 396.47 397.26
17-96
79 — 79 5-5 Aphyric basalt Microcrystalline Pillow Gray to bluish gray Rubbly pieces, pronounced halos present in some pieces, thin dark red veins, carbonate veins N N
16R-1 1-21 — 405.90 407.40
0-150
150 — 273 5-6 Breccia Microcrystalline to hypocrystalline Breccia Dark greenish, very dark gray Clast-supported breccia/hyaloclastite with small green altered glass clasts and very dark gray basalt clasts, variable size N N
16R-2 1-9 — 407.40 408.63
0-123
123 —

Breccia Microcrystalline to hypocrystalline Breccia Variable very dark gray, white Clast-supported breccia with very dark gray basalt clasts, variable size, sub-mm to 10 cm, clay and carbonate cement N N
16R-2 10-13 — 408.63 408.88
123-148
25 — 61 5-7 Aphyric basalt Microcrystalline Pillow/flow Gray to bluish gray Halos present in some pieces, thin carbonate veins, vesicles up to 2 mm in diameter filled with smectite and carbonate N N
16R-3 1-6 — 408.88 409.24
0-36
36 —

Aphyric basalt Microcrystalline Pillow/flow Gray to bluish gray Rubbly, halos present in some pieces, thin carbonate veins N N
17R-1 1-20 — 415.50 417.00
0-150
150 — 174 5-8 Breccia Microcrystalline to hypocrystalline Breccia Dark greenish gray, white Basalt clasts range in size up to 10 cm; halos are present in some of the basalt clasts N N
17R-2 1-4 — 417.00 417.24
0-24
24 —

Breccia Microcrystalline to hypocrystalline Breccia Dark greenish gray, white Breccia with carbonate and dark grayish green clay matrix; some parts clast supported, other parts matrix supported N N
17R-2 5-14 — 417.24 417.84
24-84
60 315 60 6-1 Aphyric basalt Microcrystalline Pillow/flow Dark gray Rubbly pieces, pronounced halos present in some pieces, thin dark red veins, carbonate veins, last piece finer grained N N
18R-1 1-4 — 425.10 425.52
0-42
42 — 42 6-2 Aphyric basalt Microcrystalline Pillow Dark gray Pronounced halos present in some pieces, carbonate veins N Y
18R-1 5-16 — 425.52 426.49
42-139
97 — 97 6-3 Aphyric basalt Microcrystalline with fine- grained center Pillow/flow Dark gray Chills at top and base of subunit and subvertical glassy chill on Piece 7, carbonate veins and halos present Y Y
19R-1 1-5 — 434.70 434.94
0-24
24 — 24 6-4 Breccia Microcrystalline clasts Breccia Gray to dark gray Angular basalt clasts up to 5 cm; some contain halos in carbonate cement N N
19R-1 6-15 — 434.94 435.47
24-77
53 — 53 6-5 Aphyric basalt Fine grained tomicrocrystalline Pillow/flow Dark gray Halos present in some pieces, thin dark red veins, carbonate veins N Y
19R-1 16-22 — 435.47 435.86
77-116
39 — 39 6-6 Aphyric basalt Fine grained to microcrystalline Pillow Dark gray Rubbly small pieces, pronounced halos present in some pieces, thin dark red veins, carbonate veins N N

Notes: Lithology is shown diagrammatically in Figure F32C. PP = physical properties, — = no analysis, TSB(2) = second thin section billet, TSB = thin section billet, XRF = X-ray fluorescence, Y = yes, N = no. This table is also available in ASCII format.