Table 2. Mineralogy and stable isotopic compositions of calcite and dolomite in sediments from Hole 994C.

Core, section, interval (cm)	Depth (mbsf)	Total CaCO3 (wt%)	Dolomite d (104) (Å)	Dolomite area	Calcite d (104) (Å)	Calcite area	Pyrite area	Siderite area	18O calcite (PDB)	13C calcite (PDB)
164-994C-
2H-1, 47-48	4.87	24.4	2.887	1955	3.036	1296	1534		1	0
2H-5, 96-97	11.36	46.8	2.888	1896	3.036	1262	1631		1.68	0.55
3H-2, 66-67	16.06	23.4	2.892	703	3.036	2318	1770		0.89	0.66
3H-5, 129-130	21.19	28.2	2.899	1770	3.037	1549	2789		0.67	-1.15
4H-1, 89-90	24.29	31.3	2.891	3178	3.034	1309	1573		0.24	-0.1
5H-3, 69-70	36.59	13.7	2.893	2717	3.035	1255	2750		-1.14	-0.88
6H-1, 26-27	42.66	27.6	2.889	3882	3.034	7084	2652		0.18	0.22
6H-4, 68-69	47.28								-3.7	-0.5
6H-6, 21-22	50.81	14.5	2.892	1644	3.033	8182	1865		0.54	-0.33
7H-1, 24-25	52.14	13.8	2.901	1235	3.038	7716	2960		0.47	-0.42
7H-7, 20-21	61.1	13.2	2.891	2861	3.034	6014	2414		-1.86	-0.43
8H-6, 33-34	69.23	21.2	2.899	1316	3.038	1173	3207		0.18	0.18
10H-6, 97-98	80.37								-3.26	-0.35
11H-2, 67-68	83.57	11.4	2.904	2006	3.035	6939	2887		-0.86	-1.11
11H-4, 69-70	86.59	13.3	2.89	2151	3.034	6293	2297		-0.47	-4.7
11H-7, 53-54	90.93	23.9							0.28	0.22
12H-3, 47-48	94.37	29.5	2.894	716	3.035	1345	1767		1.07	0.32
12H-4, 95-96	96.35	25.9	2.896	785	3.036	1604	2221		0.53	0.87
12H-6, 69-70	99.09	20.2	2.886	717	3.035	1539	2007		0.75	-0.11
13H-3, 70-71	104.1	19.7	2.9	1909	3.034	1327	2618		0.82	0.11
13H-7, 34-35	109.74	28.4	2.901	625	3.035	1605	1680		0.67	0.56
14H-1, 102-103	110.92	35.6	2.903	577	3.035	1619	1692		0.52	0.69
14H-2, 102-103	112.42	17.2	2.902	1636	3.035	9945	1458		0.95	0.53
14H-5, 132-133	117.22	28.9	2.902	1670	3.035	1612	2425		0.74	-0.11
15H-1, 17-18	119.57	20.2	2.899	1013	3.034	1163	2603	494	0.3	0.3
15H-7, 110-111	128.83	27.6	2.898	1235	3.035	1622	2679	701	0.45	0.1
16H-2, 58-59	130.98	25.2	2.901	1371	3.034	1532	2676		0.34	-0.91
16H-6, 137-138	137.77	39.4	2.889	4222	3.033	2078	1951	1225	-5.37	-1.48
17H-1, 28-29	138.68	35.3	2.886	4408	3.031	1689	1872	2322	-4.56	-0.77
17H-5, 16-17	144.56	12.5	2.9	1081	3.034	8652	2332	468	0.38	-0.78
19H-2, 16-17	149.27	18.2	2.899	539	3.035	8899	2807	768	0.82	-0.91
19H-CC, 17-18	155.38	17.2	2.895	631	3.034	1001	1794	1771	0.66	-0.78
20X-2, 33-34	160.23	19.4	2.909	599	3.036	1088	2634	442	1.2	-0.9
20X-4, 2-3	162.92	20.6	2.907	224	3.039	9636	2547	2522	0.38	0.35
21X-1, 19-20	164.99	9.9	2.907	557	3.036	6492	2607	1292	0.8	-0.18
21X-5, 59-60	171.39	11.7	2.903	151	3.034	7247	2713	1163	1.25	-0.15
22X-5, 59-60	179.99	26.2	2.895	629	3.034	6821	2494	851	0.82	0.07
23X-3, 80-81	187.8	11.7	2.895	795	3.036	3705	2465	1142	0.63	0.55
24X-3, 31-32	196.91	6.1	2.888	543	3.034	5899	2472	1189	0.66	0.09
26X-2, 75-76	215.15	10.1	2.895	532	3.037	5923	2859	1964	0.79	-1.07
29X-1, 80-81	232.9	7.6	2.894	801	3.035	4763	2665	1462	0.7	0.63
30X-2, 81-82	244.01	13.9	2.903	1371	3.035	9384	2774	1749	0.69	0.12
30X-5, 80-81	247.63	16.4	2.902	296	3.035	1045	2714	1604	0.62	-0.43
31X-4, 104-105	256.84	13.8	2.901	405	3.035	1145	2612	1574	0.89	0.07
31X-6, 29-30	259.09	19.5	2.9	744	3.036	1130	2422	1470	1.22	0.31
32X-2, 44-45	262.84	21.9	2.899	445	3.035	1307	2852	1526	0.83	0.78
33X-3, 54-55	273.93	17.5	2.904	193	3.036	1167	2652	2733	0.4	-0.03
35X-2, 70-71	291.16	17.1	2.909	572	3.042	9523	2827	1513	0.49	0
36P-1, 67-68	300.97	15.7	2.908	218	3.038	1043	2389	1827	0.22	0.32
38X-1, 26-27	309.26	15.9	2.91	158	3.038	9617	2454	2063	0.51	0
39X-1, 71-72	319.31	16.5	2.899	118	3.04	9649	2730	1865	0.22	-0.78
40X-1, 82-83	329.12	15.9	2.901	581	3.04	8805	2375	2874	0.3	-0.28
42X-1, 80-82	348.4	16.9	2.909	565	3.041	1153	2509	1316	0.66	0.44
43X-3, 94-95	360.62								0.83	0.46
44X-1, 109-110	367.89	20.7	2.906	280	3.04	1268	2665	2226	0.34	0.34
46X-3, 7-8	379.58	17.9	2.901	472	3.041	1148	2247	1277	0.66	0.47
47 X-2, 50-51	388.1	8.3	2.907	336	3.04	9289	2939	2828	0.44	0.34
49X-1, 60-61	397.2	20.5	2.89	235	3.04	1370	2631	1724	0.42	1
49X-5, 66-67	401.98	21.1	2.9	445	3.039	1354	2477	2084	0.55	0.51
50X-1, 39-40	405.59	21.2	2.893	1951	3.036	1355	2532	1441	0.72	0.45
51X-1, 58-59	415.38	19.2	2.908	644	3.039	1206	2584	1551	0.43	0.46
52X-2, 86-87	426.86	26.9	2.904	519	3.041	1302	2644	4597	0.55	0.29
53P-1, 3-4	434.13	17.7	2.908	102	3.039	9951	2498	2050	0.45	0.84
54X-1, 106-107	436.16	25.1	2.904	365	3.038	1140	2171	1983	0.34	0.4
54X-4, 25-26	439.85	18.1	2.908	472	3.038	1315	2389	2531	0.43	0.22
55X-2, 53-54	445.34	16.7	2.91	798	3.041	9729	2736	2035	-0.04	0.36
56X-2, 70-71	455.6	17.9	2.909	616	3.041	1102	2332	2110	0.05	-0.1
57X-2, 64-65	464.9	17.5	2.901	217	3.039	1009	2513	3969	-0.09	0.36
58X-2, 64-65	474.74	16.3	2.901	574	3.038	9812	2542	2364	0.41	0.26
59X-3, 82-83	485.4	15.7	2.903	325	3.037	9901	2681	2104	0.35	0.56
60P-1, 14-15	492.04	15.1	2.905	946	3.038	5196	2079	3308	0.87	-0.52
61X-1, 10-11	493	11.2	2.904	505	3.041	6413	2790	2124	0.28	0.68
61X-7, 23-24	502.13	17.2	2.908	796	3.041	1069	2617	1660	0.35	0.43
62X-1, 110-111	502.6	21.7	2.906	727	3.039	1183	2594	1818	0.61	0.81
63X-3, 80-81	513.98	18.2	2.902	613	3.038	1163	2666	1773	0.42	0.5
63X-6, 70-71	518.38	10.2	2.905	984	3.038	7198	2481	2443	0.37	0.25
65X-6, 59-60	530.99	14.2	2.91	609	3.041	8364	2653	2304	0.21	0.23
67X-4, 82-83	546.27	15.1	2.91	605	3.041	8382	2828	1989	0.35	0.41
68X-4, 112-113	554.42	13.7	2.894	267	3.04	9737	2058	2908	0.48	0.1
73X-4, 66-67	592.33	7.7	2.902	238	3.036	4682	2691	2746	-0.02	-2.03
75X-4, 67-68	612.37	10.7	2.909	82	3.035	1027	2532	3430	0.43	-0.09
76X-3, 51-52	620.51	8.5	2.91	446	3.037	2637	1992	3608	0.57	-0.38
76X-4, 29-30	621.79	18.3	2.904	243	3.037	8706	1278	4691	0.62	-1.07
77X-1, 32-33	626.92	15.7	2.886	646	3.035	8574	2098	2905	0.53	0.66
78X-1, 46-47	636.66		2.91	170	3.034	5799	2099	9282	0.95	0.17
78X-4, 133-134	641.55	13.1	2.895	466	3.035	8155	2869	3688	0.29	0.17
80X-4, 136-137	660.27	22.1	2.903	134	3.035	1336	2552	4236	0.26	-0.46
83X-3, 26-27	686.94	16.7	2.889	1319	3.035	8126	2165	4095	0.88	-1.55

Note: The mineralogical data are derived from Paull, Matsumoto, Wallace, et al. (1996).