Table T3. ¹⁸O, ¹³C, inorganic carbon and total organic carbon of four gravity cores.

Core	Subbottom depth (cm)	18O (‰)	13C (‰)	IC (wt%)	TOC (wt%)
GC-03	0.0			89.0	0.0
	10.0			88.0	0.4
	23.0			88.0	0.4
	28.0			86.0	0.3
	33.0			85.0	0.0
	41.0			85.0	0.2
	45.0			88.0	0.2
	49.0			90.0	0.3
	53.0			93.0	0.1
	55.0			91.0	0.2
	56.0			89.0	0.3
	59.0			90.0	0.0
	63.0			89.0	0.2
	70.0			91.0	0.0
	82.0			86.0	0.4
GC-06	2.0	–0.73	1.56	90.2	0.6
	10.0	0.11	1.66	90.2	0.2
	22.0	–0.43	1.09	91.0	0.0
	35.0	–0.23	1.59	91.8	0.3
	42.0	–0.51	1.56	91.0	0.1
	52.0	–0.74	1.26	88.9	0.5
	62.0	–0.4	1.61	92.2	0.0
	69.0	–0.43	1.82	90.0	0.3
	71.1	–0.91	1.21	89.1	0.4
	71.1	–0.62	1.56	88.9	0.3
	91.1	–0.55	1.55	91.6	0.1
	111.1	–0.5	1.44	90.5	0.2
	131.1	–0.66	1.50	85.5	0.6
	147.1	–0.34	1.86	89.4	0.4
GC-08	0.0	–0.99	1.58	88.7	0.5
	7.0	–0.8	1.81	88.7	0.2
	20.0	–0.87	1.69	90.1	0.3
	40.0	–0.82	1.81	90.9	0.0
	60.0	–0.7	1.86	86.4	0.4
	75.0	–0.65	1.68	85.6	0.4
	80.0	–0.86	1.75	86.6	0.0
	95.5	–0.16	1.70	90.5	0.0
	112.0	–0.05	1.75	83.2	1.3
	120.0	–0.36	1.58	81.2	1.4
	127.3	–0.3	1.70	79.3	1.3
	128.0	–0.28	1.67	81.0	0.2
	147.0	–0.31	1.61	81.0	0.4
	156.0	0.00	1.72	81.8	0.7
	159.0	0.14	1.70	84.2	0.3
	162.0	–0.07	1.71	82.6	0.3
	173.0	–0.27	1.53	86.3	0.7
	182.0	0.00	1.74	86.0	0.2
	186.0	–0.34	1.70	85.7	0.3
	206.0	–0.33	1.68	87.9	0.2
	226.0	–0.51	1.83	89.8	0.1
	246.0	–0.49	1.90	89.8	0.4
	263.0	–0.27	1.86	88.4	0.3
GC–09	0.0	–0.75	1.64	89.0	0.2
	10.0	–0.53	1.56	89.9	0.4
	18.0	–0.64	1.55	89.0	0.3
	24.0	–0.56	1.51	86.1	0.2
	31.0	–0.19	1.58	82.4	0.4
	41.0	–0.32	1.56	81.8	0.6
	47.5	–0.07	1.45	80.6	0.6
	57.0	0.07	1.28	84.9	0.3
	65.7	0.12	1.64	86.6	0.3
	76.0	–0.55	1.46	87.5	0.3
	85.0	0.03	1.51	86.3	0.4
	93.0	0.01	1.50	89.0	0.3
	99.0	0.22	1.41	89.5	0.0
	99.0	0.12	1.28	89.9	1.3
	110.5	–0.35	1.64	88.4	1.1
	114.0	0.59	1.93	89.7	0.0
	116.0	0.49	1.77	88.6	0.3
	129.0	–0.69	1.63	83.9	0.1
	149.0	–0.37	1.71	83.3	0.5
	169.0	–0.4	1.73	84.4	1.1
	181.0	–0.21	1.75	87.7	0.3
	195.3	–0.72	1.66	88.9	1.2
	195.0	–0.41	1.66	88.5	0.5
	206.5	–0.62	1.71	89.6	0.3
	225.0	–0.62	1.71	90.8	0.2
	228.0	–0.44	1.75	89.0	0.3
	244.0	–0.48	1.76	88.6	0.7
	264.0	–0.33	1.67	88.4	1.7
	267.9	–0.44	1.68	88.3	0.7
GC-10	1.0	–0.5	1.64	87.5	0.4
	13.0	–0.33	1.27	87.0	0.1
	27.0	–0.06	1.31	85.1	0.0
	27.0	–0.52	1.21	84.9	0.6
	32.0	–0.27	1.21	82.4	0.4
	42.0	–0.02	1.33	80.7	0.4
	52.0	0.29	1.59	82.3	0.3
	59.0	0.43	1.64	88.7	0.1
	67.0	0.06	1.34	83.3	0.3
	71.8	0.10	1.37	87.7	0.2
	71.8	0.01	1.27	86.7	0.3
	81.8	0.11	1.25	84.6	0.5
	96.8	–0.07	1.71	83.8	0.5
	104.8	–0.07	1.39	85.8	0.2
	124.8	–0.69	1.49	85.4	0.2
	152.7	–0.44	2.00	83.2	0.3
	169.1	–0.36	1.76	80.9	0.6
	169.1	–0.19	1.72	80.9	0.5
	189.1	–0.6	1.31	87.8	0.3
	209.1	–0.54	1.61	89.0	0.4
	229.1	–0.38		87.2	0.5
	229.1	–0.45	1.68	88.7	0.2
	249.1	–0.77	1.53	88.4	0.3
	268.9	–0.52	1.61	88.3	0.3
	268.9	–0.28	1.67	88.8	0.0
	276.9	–0.36	1.47	90.0	0.2
	298.9	–0.2	1.50	87.4	0.4
	318.9	–0.33	1.57	87.4	0.3
	334.9	–0.17	1.34	86.4	0.2
	340.9	–0.33	1.63	88.0	0.0
	350.9	–0.14	1.14	83.6	0.4
	359.9	–0.08	1.13	79.3	0.4
	366.1	0.65	1.29	84.9	0.1

Notes: IC = inorganic carbon, TOC = total organic carbon. 1 errors are 0.06‰, 0.04‰, 0.2 wt%, and 0.2 wt%, respectively.