Concentrations of biomarkers (aliphatic fraction) in Hala Hu sediment core H7


Concentrations of aquatic (mid-chain n-alkenes, C20-HBIs) and terrestrial (long-chain n-alkanes) biomarker groups were analysed in core H7 from Hala Hu, China. The compounds were quantified relative to an internal standard (5α-androstane) using an Agilent 7890A gas chromatography (GC) instrument, equipped with a mass selective detector (MSD; Agilent 5975C Series) and a flame ionization detector (FID; Agilent 7683B Series). For the GC, a Restek DB-5 column (30 m, inner diameter 0.25 mm, film thickness 0.25 μm) was used.The lake is located on the northern margin of the Tibetan Plateau (97.24 - 97.47°E, 38.12 - 38.25°N, 4078 m above sea level), along the modern marginal zone between the Asian Summer Monsoon (ASM) and westerlies influences. The core was drilled at the deepest point (65 m) of the lake and extends from 212 to 636 cm sediment depth. According to the age-model (Yan et al., 2020) the covered time period is 7462 - 23610 cal yr BP.

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Creator Aichner, Bernhard ORCID logo; Callegaro, Alice; van der Meer, Marcel T J ORCID logo; Wünnemann, Bernd (ORCID: 0000-0002-7172-735X); Yan, Dada; Zhang, Yongzhan; Barbante, Carlo ORCID logo; Sachse, Dirk ORCID logo
Publisher PANGAEA
Publication Year 2021
Funding Reference German Research Foundation Crossref Funder ID 259668396 Palaeoclimatology of Central Asia and the northeastern Tibetan Plateau on basis of compound-specific isotope analysis of biomarkers
Rights Creative Commons Attribution 4.0 International;
OpenAccess true
Resource Type Dataset
Format text/tab-separated-values
Size 1615 data points
Discipline Earth System Research
Spatial Coverage (97.571 LON, 38.305 LAT); Hala Hu