2026-05-14T06:55:17Zhttp://doidb.wdc-terra.org/oaip/oai

oai:doidb.wdc-terra.org:352021-08-16T10:42:14ZDOIDBDOIDB.SDDB

false3DOIDB.SDDB 10.1594/GFZ.SDDB.1053 Swann, George Mackay, Anson Leng, Melanie Demory, Francois Deutsches GeoForschungsZentrum GFZ 2006 Vereshchagin Long Cores Expedition 2001 R/V Vereshchagin δ13C age (calendar years) AMS calculation Carbon/Nitrogen ratio correlation of paleointensity records total organic carbon AMS 2006-09-15 eng Dataset 10.1016/j.gloplacha.2004.09.019 400 Datapoints text/tab-separated-values C/N mass ratios remain constant throughout MIS 3 and into MIS 2, with values between 6.3 and 8.9, indicating no significant terrestrial input of organic matter (Fig. 3). Low %TOC values during the interstadial increase from 0.4 to 0.7 between 57.8 and 43.7 kyr BP with a concurrent gradual increase in δ13C(organic) amid oscillations between −23.2‰ and −26.1‰ (Fig. 3). %TOC falls to 0.4 between 40.9 and 39.4 kyr BP whereas δ13C(organic) remains high at c. 24‰ with a peak value of −23.6‰ at 39.4 kyr BP. The subsequent two-stage increase in %TOC from 39 to 37.9 kyr BP and between 37.3 and 36.9 kyr BP is marked by a period of δ13C(organic) lowering to c. −26.6‰ before δ13C(organic) increases after 37.9 kyr BP to −24.8‰, values comparable to those prior to the %TOC decline at 40.9 kyr BP. 53.9535 108.9136 53.9545 108.9139