OM parameters such as the total amount of organic carbon and the C/N ratio and acetate concentrations indicate labile carbon. The studied deposits contain a significant carbon pool of 13 ± 11 kg/m~3 (Yedoma) and 22 ± 11 kg/m~3 (thermokarst). Moreover, biomarker n-alkane proxies reveal a higher land plant source signal and a minor degradation state of the OM. Stable water isotopes of ground ice and archaeol concentration reveal cold climate during the late Pleistocene and a comparatively warmer temperature during the Holocene. The biomarker temperature is a promising tool and could be a supplement to the temperature signals inferred from water isotopes, but our data illustrates that the absolute GDGT temperature interpretation is not appropriate for the studied deeper sediments.
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