Lake Baikal paleotemperature record derived from the methylation of brGDGTs

Publishing Network for Geoscientific and Environmental Data (PANGAEA) (Alfred Wegener Institute for Polar and Marine Research) 2026 Dataset Open access

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Authors: Novak, Joseph B, Prokopenko, Alexander A, Tarasov, Pavel E, Russell, James M, Lindemuth, Emma, Shichi, Koji, Kashiwaya, Kenji, Peck, John A, Vachula, Richard, Swann, George E A, Polissar, Pratigya J
DOI: 10.1594/pangaea.983538
Cited by: 0

Abstract

An 8.6-million-year record of paleotemperature change from Lake Baikal, Russia, derived from the methylation of sedimentary brGDGTs. Paleotemperatures were estimated from MBT'5Me using the global lakes regression of for lake samples with IR6Me values ≤ 0.4 (Novak et al. 2025, doi:10.1029/2024GC012069). Samples with IR6Me values > 0.4 were rejected for paleotemperature estimation due to possible non-thermal effects on brGDGT methylation (see Novak et al. 2025). We note that all samples older than 50 thousand years old have IR6ME values ≤ 0.4.

Publication details

Journal / source
Publishing Network for Geoscientific and Environmental Data (PANGAEA) (Alfred Wegener Institute for Polar and Marine Research)
Publication date
1 January 2026
Language
EN
Document type
Dataset