Table T1. Carbon and nitrogen concentrations and isotopic compositions of sediments from Sites 1040, 1254, and 1255. (See table notes. Continued on next page.)

Table T1. Carbon and nitrogen concentrations and isotopic compositions of sediments from Sites 1040, 1254, and 1255.


Core, section, interval (cm)	Depth (mbsf)	Description	Nitrogen		Organic carbon		Atomic TOC/TN	Carbonate
Core, section, interval (cm)	Depth (mbsf)	Description	TN (ppm)	¹⁵N_air()	TOC (wt%)	¹³C_VPDB ()	Atomic TOC/TN	Total (wt%)	¹³C_VPDB ()	¹⁸O_VSMOW ()
170-1040A-
1H-2, 140–150	2.9	Silty clay to clayey silt with debris flows and silty sands	966	4.2	1.36	–24.2	16.4	0.5	2.1	35.3
1H-5, 140–150	7.4		916	4.6	1.43	–24.5	18.2	0.7	–0.9	33.9
170-1040B-
1H-1, 140–150	1.4		902	3.5	1.35	–24.3	17.5	0.9	–1.7	32.7
1H-3, 135–150	4.35		832	5.0	1.05	–23.5	14.7	0.7	–2.2	34.2
2H-2, 125–150	8.35		1060	4.0	1.61	–23	17.7	2.0	–0.7	32.4
2H-5, 125–150	12.85		1099	4.5	1.58	–22.8	16.8	1.9	–0.2	31.6
6X-1, 130–150	37.7		1480	4.7	1.78	–22.5	14	1.2	–2.3	33.5
8X-1, 74–84	55.94		1315	4.5	1.68	–24.5	14.9	0.4
9X-4, 124–144	70.26		1470	4.8	1.63	–23.2	12.9	1.0	–0.9	32.8
10X-1, 130–150	75.7	Silty clay (stone)	1244	6.0	1.29	–24.6	12.1	1.7	–26.1	36.4
11X-4, 130–150	89.8		1359	6.1	0.98	–25.8	8.4	1.3	4.1	34.2
12X-3, 125–150	97.85		1752	6.4	1.65	–23.9	11	1.8	2.8	33.3
13X-2, 120–150	101.8		2040	6.0	1.48	–23.8	8.5	3.5	–1	31.1
14X-2, 120–150	106.5		1894	6.4	1.59	–23	9.8	3.0	0.5	31.7
15X-4, 120–150	119.05		1976	6.6	1.51	–23.3	8.9	1.7	2.3	33.8
16X-5, 125–150	128.45		2157	5.8	1.73	–22.6	9.4	3.1	1.4	32.5
17X-1, 120–150	133.7		2221	5.0	1.79	–22.8	9.4	3.6	0.3	32.2
18X-2, 120–150	144.90		2070	5.5	1.83	–24.1	10.3	2.5	0.7	32.2
19X-4, 120–150	157.35		1941	6.2	1.39	–22.9	8.4	1.8	0.4	31.4
20X-2, 120–150	164.1		1949	5.7	1.58	–23.6	9.5	3.1	0.5	30.4
21X-3, 120–150	174.57		2095	6.0	1.86	–23.5	10.4	2.3	–0.6	34.5
22X-2, 120–150	183.3		1822	6.1	1.43	–23.9	9.2	1.3	2.4	32.9
170-1040C-
1R-2, 117–119*	161.97		1814	5.3	1.35^†	–22.6^†	8.7
1R-2, 120–150	162.00		1759	5.5	1.36	–22.7	9.0	1.6	1.6	32.1
2R-4, 115–150	174.45		1903	4.9	1.77	–23.7	10.8	2.1	0.2	31.6
3R-2, 111–113*	181.01		1440	4.2	0.85	–24.9	6.9
3R-2, 115–150	181.05		1502	5.0	1.14	–24.8	8.9	2.0	0.4	30.0
4R-2, 120–150	190.65		1783	4.4	1.38	–24.8	9.0	0.03
5R-4, 112–114*	203.22		1950	4.9	1.56^†	–25.5^†	9.3
5R-4, 115–150	203.25		1903^‡	5.52^‡	1.53	–25.4	9.3	0.2	3.7	34.5
6R-4, 117–119*	212.97		1748	4.8	1.63	–23.6	10.9
6R-4, 120–150	213.00		1654	4.6	1.58	–24	11.1	1.9	–1.0	32.4
7R-2, 117–119*	219.57		1653	3.9	1.65	–24.1	11.6	0.8	–1.4	33.2
8R-2, 115–150	229.15		1928	4.4	1.94	–23.7	11.7	1.3	1.0	32.6
9R-3, 115–150	240.31		1646	4.4	1.54	–24.1	10.9	2.2	–7.5	32.6
10R-4, 115–150	251.45		1580	4.4	1.58	–24.1	11.7	2.3	–6.8	31.6
11R-5, 115–150	261.86		1632	4.3	1.58	–24.3	11.3	0.6	–2.1	30.3
12R-3, 115–150	269.25		1684	4.2	1.67	–24	11.6	1.3	–2.6	30.2
13R-4, 75–100	279.95		1494	3.7	1.34	–23.6	10.5	0.5	–6.8	31.9
14R-3, 0–35	287.40		1510	3.8	1.31	–24	10.1	1.4	–8.6	31.5
15R-6, 115–150	302.75		1553	3.8	1.28	–25	9.6	1.8	–5.2	32.7
16R-2, 102–106*	306.22		1544	3.6	1.23	–24	9.3	1.7	–3.4	30.4
16R-2, 120–150	306.40		1459	3.6	1.24	–23.9	9.9	2.0	–3.3	30.7
17R-2, 115–150	315.95		1366	4.5	1.23	–24	10.5	2.2	–3.2	30.3
18R-2, 112–115*	325.62		1549	3.8	1.31^†	–23.7^†	9.9
18R-2, 115–150	325.65		1536	3.9	1.36	–23.7	10.3	0.5	–2.7	30.0
19R-2, 112–115*	335.22		1357	4.4	1.33^†	–25.1^†	11.4
19R-2, 115–150	335.25		1320	4.5	1.26	–26.3	11.1	0.3	–0.7	30.7
20R-5, 88–94*	349.08		1529	3.5	1.5	–25.1	11.4	1.3	–1.2	30.0
20R-5, 115–150	349.35		1551	4.0	1.54	–25.6	11.6	1.4	1.3	32.1
21R-4, 115–150	357.45		1651	3.5	1.45	–25.6	10.2	1.5	0.1	30.9
22R-4, 115–150	367.05		1773	4.7	1.96	–23.2	12.9	2.7	–1.7	32.2
205-1254A-
3R-3, 125–165	169.35	Clay with intervals of silt to very fine sand	1950	4.4	1.61	–23.8	9.6
4R-5, 45–90	181.11		2017	5.0	1.82	–24.4	10.5
5R-5, 50–90	190.40		1772^‡	5.7^‡	1.71	–21.5	11.3
6R-1, 121–162	195.31		1779^‡	5.6^‡	1.94^†	–24.4^†	12.7
7R-5, 34–74	209.95		1685^‡	5.2^‡	1.99	–24.8	13.8
8R-4, 0–45	217.65		1915^‡	6.0^‡	1.3	–24.8	7.9
9R-5, 0–40	305.50		1575	4.2	1.27	–25.5	9.4
10R-6, 0–40	316.73		1504^‡	4.1^‡	1.35	–25.6	10.5
12R-1, 101–141	329.91		1434^‡	4.0^‡	1.20^†	–26.6^†	9.8
13R-3, 100–145	342.50		1594	4.3	1.25^†	–25.7^†	9.1
13R-5, 65–109	344.65		1554^‡	4.1^‡	0.91	–26.2	6.8
14R-3, 0–40	350.81		1992	4.1
14R-6, 52–97	354.28		2000	3.6	1.61	–24.5	9.4
16R-3, 49–89	366.19		1984	5.8	2.55	–21.4	15.0
205-1255A-
2R-2, 0–43	133.94	Silty clay and breccia	2398^††	4.6^††	1.84	–23.1	8.9
3R-2, 87–127	144.77	Diatom ooze	1273**	5.3**	1.37	–21.5	12.6
4R-1, 0–38	152.00	Diatom ooze	1997**	4.8**	3.06	–21.1	17.9

Notes: Site 1040 samples were kept at room temperature and naturally dried unless otherwise indicated. TN = total nitrogen, TOC = total organic carbon, VPDB = Vienna Peedee belemnite, VSMOW = Vienna standard mean ocean water. * = cold-stored sample for comparison, † = average data listed in Table AT1, ‡ = untreated sample data listed in Table AT2. ** = sample rinsed with distilled water before analysis, †† = sample rinsed with 6-N HCl before analysis.