Repeated occurrence of surface-sediment remobilization along the landward slope of the Japan Trench by great earthquakes

Earth, Planets and Space

Table 1 Results of radiocarbon age determinations and age differences between turbidite muds and hemipelagic muds of the examined 11 turbidites

	Sample depth (cm)	Conventional ¹⁴C age	δ¹³C	Turbidite no.	Age difference		Accession no.
1	0–2	1720 ± 30	− 20.9				Beta-485705
2	24–26	1770 ± 30	− 20.92	T2	0	(2–3)	Beta-521632
3	30–32	1770 ± 30	− 20.21				Beta-539906
4	38–40	1970 ± 30	− 19.07	T3	320	(4–5)	Beta-539907
5	45–47	1650 ± 30	− 20.7				Beta-485704
6	60–62	1980 ± 30	− 20.39	T4	330	(6–5)	Beta-536566
7	82–84	2140 ± 30	− 21.2	T5	40	(7–8)	Beta-521633
8	87–89	2100 ± 30	− 20.64				Beta-521634
9	94–96	6780 ± 30	− 20.77	T6	4670	(9–10)	Beta-521635
10	105–107	2110 ± 30	− 20.44				Beta-536567
11	115–117	2310 ± 30	− 20.73	T7	20	(11–12)	Beta-536568
12	125–127	2290 ± 30	− 20.76				Beta-536569
13	141–143	2150 ± 30	− 20.8				Beta-485703
14	160–162	2560 ± 30	− 20.75				Beta-536570
15	187.2–189.2	3310 ± 30	− 20.05				Beta-539908
16	223.2–225.2	7550 ± 30	− 21.98	T13	5140	(16–17)	Beta-536571
17	237.2–239.2	2410 ± 30	− 20.6				Beta-485702
18	254.7–256.7	2810 ± 30	− 19.34				Beta-539909
19	303.1–305.1	2910 ± 30	− 20.75	T17	− 40	(19–20)	Beta-536572
20	321.1–323.1	2950 ± 30	− 20.39				Beta-536573
21	361.1–362.1	3160 ± 30	− 20.8	T20	270	(21–22)	Beta-521636
22	366.1–368.1	2890 ± 30	− 20.8				Beta-485701
23	394.9–396.9	3170 ± 30	− 20.78				Beta-536574
24	402.9–404.9	3270 ± 30	− 20.73	T22	− 40	(24–25)	Beta-536575
25	419.9–421.9	3310 ± 30	− 19.77				Beta-539910
26	437.9–439.9	3210 ± 30	− 20.9				Beta-485700
27	459.9–461.9	3720 ± 30	− 20.71				Beta-536576
28	466.9–468.9	3730 ± 30	− 20.85	T26	10	(28–27)	Beta-536577