Table 1 AMS Radiocarbon (¹⁴C) dates from detrital charcoals collected from the Himebasti trench.

From: Establishing primary surface rupture evidence and magnitude of the 1697 CE Sadiya earthquake at the Eastern Himalayan Frontal thrust, India

Unit^a	Sample ID	Lab Code^b	Uncalibrated conventional radiocarbon age^c	∂3C repo rted^d	Calibrated ages (calendric, 2σ, 95.4%)^e	Relative probability distribution percentage (%)
Eastern wall, Himebasti Trench
1a	H15	Beta-279175	> 43,500 BP	− 25.6	> 43,500 BP	–
1b	H35	Beta-279177	> 43,500 BP	− 24.8	> 43,500 BP	–
1b	H30	Beta-279168	1760 ± 40 BP	− 26.9	CE 225–404	95.4
1b	H32	Beta-279170	1520 ± 40 BP	− 25.1	CE 433–610 CE 619–639	90.6 4.8
1b	H37	Beta-279167	1230 ± 40 BP	− 10.7	CE 675–888	95.4
1b	H3	Beta-279176	870 ± 40 BP	− 25.0	CE 1045–1086 CE 1093–1105 CE 1120–1264	15.4 2.0 78
1b	H5	Beta-281522	370 ± 50 BP	NA	CE 1445–1638	95.4
1b	H9	Beta-279181	330 ± 40 BP	− 25.7	CE 1466–1645	95.4
1b	H7	Beta-281500	270 ± 40 BP	− 29.0	CE 1490–1676 CE 1743–1750 CE 1765–1800	85.4 0.7 9.4
1b	H4	Beta-281502	250 ± 40 BP	− 24.9	CE 1508–1594 CE 1618–1686 CE 1732–1806 CE ≥ 1927	24.4 41.4 26.1 3.5
1b	H27	Beta-281503	240 ± 40 BP	− 30.3	CE 1516–1590 CE 1620–1690 CE 1728–1809 CE ≥ 1921	15.0 40.1 34.4 5.9
1b	H31	Beta-281501	210 ± 40 BP	NA	CE 1530–1539 CE 1635–1699 CE 1722–1814 CE 1835–1885 CE ≥ 1910	0.6 28.8 47.8 4.8 13.3
1b	H2	Beta-281523	170 ± 40 BP	28.0	CE 1657–1711 CE 1718–1822 CE 1831–1894 CE ≥ 1905	18.4 42.6 16.4 18.1
1b	H29	Beta-281504	150 ± 40 BP	− 30.2	CE 1666–1783 CE ≥ 1795	41.9 53.6
1b	H28	Beta-281518	120 ± 40 BP	− 31.7	CE 1674–1766 CE 1774–1776 CE 1799–1943	31.7 0.5 63.3
1b	H20	Beta-279169	110 ± 40 BP	− 28.8	CE 1675–1744 CE 1750–1765 CE 1799–1942	26.9 3.1 65.4
1b	H6	Beta-279179	90 ± 40 BP	− 27.9	CE 1680–1740 CE 1753–1763 CE 1800–1940	26.3 1.4 67.7
1b	H1	Beta-279180	90 ± 40 BP	− 29.6	CE 1680–1740 CE 1753–1763 CE 1800–1940	26.3 1.4 67.7
3	H25	Beta-281521	2100 ± 40 BP	28.2	BCE 346–317 BCE 204–32 BCE 17–8 CE	4.7 87.3 3.5
Drift Wood Samples, Himebasti
PSB-1		Beta-279194	170 ± 40 BP	25.1	CE 1657–1711 CE 1718–1822 CE 1831–1894 CE ≥ 1905	18.4 42.6 16.4 18.1
PSB-2		Beta-279195	120 ± 40 BP	26.9	CE 1674–1766 CE 1774–1776 CE 1799–1943	31.7 0.5 63.3
PSB-3		Beta-279196	120 ± 40 BP	25.2	CE 1674–1766 CE 1774–1776 CE 1799–1943	31.7 0.5 63.3

PSB1, 2 and 3, are buried wood logs. All other samples are detrital charcoals.
^aRefer to respective trench logs for stratigraphic unit designations.
^bSamples have been analyzed at Beta Analytic (Florida) by accelerator mass spectrometry (AMS). Each number corresponds to the laboratory code for each sample.
^cConventional Radiocarbon years BP relative to 1950 CE with 2σ confidence level comprising of counting statistics, reference standard, blank, and random machine error.
^dThe δ13C values are the assumed values when given without decimal places. Values measured for the material itself are given with a single decimal place.
^ePre-bomb calendric dates were calibrated using OxCal v4.4.2 (https://14C.arch.ox.ac.uk/oxcal/OxCal.html)²¹.

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Table 1 AMS Radiocarbon (¹⁴C) dates from detrital charcoals collected from the Himebasti trench.

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