Publication Date:
2021-08-16
Description:
Abstract
Description:
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.
Keywords:
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
Language:
English
Type:
Dataset
,
Dataset
Format:
400 Datapoints
Format:
text/tab-separated-values
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