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Table T1. Total carbonate content, mineralogy, and oxygen and carbon isotopic compositions of the carbonate fraction of diagenetic carbonate concretions, Sites U1325, U1326, U1327, U1328 and U1329. (See table notes.)

Core, section,
interval (cm)
Depth (mbsf)
Total carbonate (wt%)
Aragonite (relative %)
Calcite (relative %)
Dolomite (relative %)
Other carbonate
(relative %)
Calcite/Aragonite
(‰ VPDB)
Dolomite
(‰ VPDB)
Carbonate mixture
(‰ VPDB)
δ18O
δ13C
δ18O
δ13C
δ18O
δ13C
311-
U1325B-16X-6, 28
126.93
29
 
41
59
 
 
 
 
 
4.71
–13.14
U1325C-6X-4, 47
221.98
65
 
8
92
 
 
 
 
 
4.65
–3.94
U1325C-11X-1, 119
258.29
69
 
93
7
 
5.01
–30.23
 
 
 
 
U1326C-2H-2, 92
6.32
64
 
23
77
 
 
 
 
 
6.74
–41.49
U1326C-9X-2, 92
71.52
80
 
1
99
 
 
 
7.73
–38.35
 
 
U1326D-5X-2, 5
118.75
67
 
4
96
 
 
 
7.28
–30.87
 
 
U1326D-9X-1, 0
155.90
16
 
100
 
 
0.88
1.05
 
 
 
 
U1326D-17X-3, 0
235.90
16
 
100
 
 
–1.27
3.15
 
 
 
 
U1326D-20X-3, 0
263.75
33
 
33
7
59*
 
 
 
 
3.34
2.5
U1327C-10H-1, 96
75.56
24
 
73
27
 
 
 
 
 
5.4
–11.23
U1327C-16X-2, 120
126.40
11
 
22
6
72
 
 
 
 
2.10
17.78
U1327D-5X-1, 65
126.95
64
 
48
52
 
 
 
 
 
5.55
–2.57
U1327C-17X-CC, 13
136.77
67
 
83
17
 
 
 
 
 
4.28
–22.37
U1327C-18X-2, 0
142.35
67
 
88
12
 
4.43
–27.44
 
 
 
 
U1327C-18X-2, 130
143.65
76
 
3
97
 
 
 
6.54
2.04
 
 
U1327D-10P-1, 0
155.10
85
 
4
96
 
 
 
3.99
12.53
 
 
U1327D-10P-1, 78
155.88
64
 
31
69
 
 
 
5.89
6.27
 
 
U1327D-11X-1, 0
157.10
67
 
6
94
 
 
 
4.52
9.13
 
 
U1327C-20X-1, 0
160.80
49
 
98
2
 
5.33
–31.46
 
 
 
 
U1327C-20X-5, 6
166.14
9
 
75
17
7
 
 
3.31
2.77
 
 
U1327C-21X-7, 0
178.43
82
 
1
99
 
 
 
6.12
6.93
 
 
U1327D-16X-CC, 10
228.40
62
 
98
2
 
0.45
23.33
 
 
 
 
U1327D-16X-CC, 18
228.48
68
 
94
6
 
0.53
23.38
 
 
 
 
U1328B-1H-2, 8
1.58
30
 
82
18
 
4.83
–47.65
 
 
 
 
U1328D-1X-2, 40
1.90
31
 
91
9
 
4.04
–48.02
 
 
 
 
U1328D-1X-5, 9
6.09
43
 
97
3
 
4.42
–51.61
 
 
 
 
U1328D-1X-5, 10
6.10
50
 
97
3
 
4.7
–51.25
 
 
 
 
U1328B-3X-CC, 0
6.20
77
30
68
2
 
3.92
–30.62
 
 
 
 
U1328E-2X-1, 52
7.02
70
 
100
 
 
5.52
–44.06
 
 
 
 
U1328D-1X-5, 135
7.35
84
 
81
19
 
 
 
 
 
5.47
–32.74
U1328D-1X-CC, 0
8.10
40
 
27
73
 
 
 
 
 
3.59
–18.52
U1328D-2X-2, 30
9.43
68
 
30
70
 
 
 
 
 
4.98
–8.78
U1328D-2X-CC, 0
10.02
61
 
8
92
 
 
 
4.8
–30.15
 
 
U1328B-4P-1, 0
14.50
70
13
72
16
 
 
 
 
 
4.7
–29.26
U1328B-6X-1, 0 (A)
18.40
71
8
82
10
 
 
 
 
 
4.52
–31.95
U1328B-6X-1, 0 (B)
18.40
72
8
77
14
 
 
 
 
 
4.48
–29.52
U1328B-6X-1, 25
18.65
70
 
87
13
 
 
 
 
 
4.45
–28.59
U1328B-6X-1, 30
18.70
60
 
88
12
 
 
 
 
 
4.87
–27.47
U1328B-6X-1, 35
18.75
41
 
96
4
 
3.36
–27.38
 
 
 
 
U1328B-6X-1, 36
18.76
69
11
62
27
 
 
 
 
 
4.64
–28.05
U1328B-6X-1, 47
18.87
71
 
87
13
 
 
 
 
 
4.67
–27.01
U1328E-8X-1, 97
27.67
67
 
96
4
 
3.53
–47.21
 
 
 
 
U1328E-9X-1, 16
36.46
68
 
85
15
 
 
 
 
 
2.82
–21.51
U1328C-5P-1, 0
92.00
84
46
48
5
 
4.18
–30.96
 
 
 
 
U1328C-19X-4, 24
220.27
14
 
94
6
 
4.99
–34.22
 
 
 
 
U1328C-19X-4, 26
220.29
50
 
80
20
 
 
 
 
 
5.38
–35.24
U1328C-19X-4, 32
220.35
58
 
92
8
 
5.62
–41.47
 
 
 
 
U1328C-22X-CC, 12
253.70
79
 
 
100
 
 
 
7.42
2.13
 
 
U1328C-22X-CC, 20-21
253.78
36
 
13
87
 
 
 
4.66
11.3
 
 
U1328C-22X-CC, 20-22
253.78
71
 
2
98
 
 
 
4.73
11.25
 
 
U1328C-25X-2, 77
276.37
59
 
3
97
 
 
 
7.1
–13.4
 
 
U1329E-4H-5, 48
30.48
68
 
11
89
 
 
 
 
 
6.79
–19.51
U1329E-4H-5, 93
30.93
36
 
10
90
 
 
 
 
 
6.5
–16.47
U1329E-4H-5, 113
31.13
70
 
1
99
 
 
 
7.07
–15.63
 
 
U1329C-4H-3, 138
31.48
35
 
 
100
 
 
 
6.92
–22.55
 
 
U1329C-4H-3, 140
31.50
59
 
 
100
 
 
 
6.97
–21.3
 
 
U1329E-4H-6,72-74
32.22
43
 
5
95
 
 
 
6.95
–11.17
 
 
U1329C-5H-3, 129
40.89
15
 
100
 
 
4.35
–20.63
 
 
 
 
U1329C-5H-6, 61
44.71
26
 
30
70
 
 
 
 
 
5.6
6.82
U1329C-8H-2, 58
59.68
80
 
100
 
 
4.39
–31.67
 
 
 
 
U1329C-8H-2, 62
59.72
54
 
100
 
 
4.5
–28.34
 
 
 
 
U1329C-12H-2, 36
97.44
28
 
67
33
 
 
 
 
 
4.3
–1.66
U1329E-8Y-1, 35
104.35
64
 
 
100
 
 
 
6.93
–6.39
 
 
U1329C-17H-1, 0
135.60
68
 
90
10
 
4.6
–11.67
 
 
 
 
U1329C-18X-2, 65
142.35
76
 
45
55
 
6.58
20.04
 
 
 
 
U1329C-18X-5, 18
146.38
89
 
 
100
 
 
 
6.03
24.15
 
 
U1329C-18X-5, 27
146.47
81
 
 
100
 
 
 
6.14
21.18
 
 
U1329C-19X-1, 64
150.54
33
 
7
 
93
 
 
 
 
5.66
37.55
U1329C-20X-1, 70
160.30
78
 
100
 
 
3.88
–19.58
 
 
 
 
U1329C-20X-1, 89
160.49
80
 
100
 
 
3.62
8.48
 
 
 
 
U1329C-20X-1, 125
160.85
82
 
100
 
 
3.99
–21.28
 
 
 
 
U1329C-20X-3, 34
162.94
81
 
100
 
 
4.05
–21.26
 
 
 
 
U1329C-20X-5, 34
165.44
70
 
100
 
 
3.68
–30.69
 
 
 
 
U1329C-20X-CC, 19
166.00
83
 
 
100
 
 
 
4.28
33.46
 
 
U1329C-21X-2, 118
171.98
44
 
36
8
56
 
 
 
 
4.55
26.76
U1329C-21X-3, 61
172.91
53
 
100
 
 
3.37
–10.88
 
 
 
 
U1329C-21X-3, 129
173.59
16
 
38
 
62
 
 
 
 
4.71
29.34
U1329C-21X-3, 129 CARB
173.59
64
 
18
 
82
 
 
 
 
4.99
30.81
U1329C-21X-6, 0
176.30
82
 
1
99
 
 
 
4.3
33.46
 
 
U1329C-22X-CC, 72
187.75
60
 
100
 
 
–8.68
3.5
 
 
 
 

Notes: VPDB = Vienna Peedee belemnite. CARB = small veinlet of carbonate. * = rhodochrosite + siderite. All other values in Other carbonate column are for siderite.

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