Table 2 τ_soil and soil mean carbon ages for the Ganga–Brahmaputra river catchment during the past 17 kyrs

Deposition age [kyrs BP]	n-Alkanoic acid homologues	Mass weighted mean R [¹⁴C yrs]	τ_soil [yrs]	Soil mean carbon ages [yrs]
0.003	n-C_24:0, n-C_26:0, n-C_28:0, n-C_30:0, n-C_32:0	1446 ± 80^a	36 ± 4	2333 ± 293
0.004	n-C_24:0, n-C_26:0, n-C_28:0, n-C_30:0, n-C_32:0	927 ± 87^a	23 ± 3	1495 ± 220
3.54 ± 0.39	n-C_24:0, n-C_26:0, n-C_28:0, n-C_30:0, n-C_34:0	7119 ± 1149	178 ± 33	11483 ± 2261
6.57 ± 0.42	n-C_24:0, n-C_28:0, n-C_30:0, n-C_32:0	1489 ± 618	37 ± 16	2401 ± 1033
10272 ± 504	n-C_24:0, n-C_26:0, n-C_28:0, n-C_30:0, n-C_32:0	3009 ± 749	75 ± 20	4853 ± 1327
10.92 ± 0.48	n-C_24:0, n-C_28:0, n-C_30:0, n-C_32:0, n-C_34:0	2070 ± 1116	52 ± 28	3339 ± 1839
12.74 ± 0.42	n-C_24:0, n-C_26:0, n-C_28:0, n-C_30:0, n-C_34:0	3234 ± 1166	80 ± 30	5216 ± 1971
13.61 ± 0.23	n-C_24:0, n-C_26:0, n-C_28:0, n-C_30:0, n-C₃₂, n-C_34:0	1375 ± 830	34 ± 21	2217 ± 1363
15.62 ± 0.37	n-C_24:0, n-C_26:0, n-C_28:0	8709 ± 4166	217 ± 106	14047 ± 6903
16.77 ± 0.39	n-C_24:0, n-C_26:0, n-C_28:0, n-C_30:0, n-C_34:0	6453 ± 2177	116 ± 55	7506 ± 3612
16.90 ± 0.10	n-C_24:0, n-C_26:0 n-C_28:0, n-C_30:0, n-C_32:0	4004 ± 3507	100 ± 88	6458 ± 5703

τ_soil and soil mean carbon ages (this study) are calculated from compound-specific radiocarbon analysis (CSRA) of n-alkanoic acids in marine sediments from the Bengal Fan (data from ref. ¹⁶). CSRA-data of n-alkanoic acids are presented as the reservoir age offset (R) between the n-alkanoic acids and the atmosphere at the time of deposition in the Bengal Fan. R is based upon the mass-weighted results of the listed n-alkanoic acid homologues¹⁶. The deposition age is adopted from ref. ¹⁶. The standard deviations (±) are reported along with the results.
^aData of pre-1950 Bengal Fan sediments are adopted from ref. ²⁷.

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