Seasonal deposition processes and chronology of a varved Holocene lake sediment record from Chatyr Kol lake (Kyrgyz Republic)

Kalanke, Julia; Mingram, Jens; Lauterbach, Stefan; Usubaliev, Ryskul; Tjallingii, Rik; Brauer, Achim

doi:https://doi.org/10.5194/gchron-2-133-2020

Articles | Volume 2, issue 1

https://doi.org/10.5194/gchron-2-133-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/gchron-2-133-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 2, issue 1

Research article

|

24 Jun 2020

Research article |

| 24 Jun 2020

Seasonal deposition processes and chronology of a varved Holocene lake sediment record from Chatyr Kol lake (Kyrgyz Republic)

Julia Kalanke, Jens Mingram, Stefan Lauterbach, Ryskul Usubaliev, Rik Tjallingii, and Achim Brauer

Supplement

https://doi.org/10.5194/gchron-2-133-2020-supplement

Data sets

Age model and microfacies analysis results obtained from microscopic analysis of overlapping petrographic thin sections of composite sequence CHAT12 from Chatyr Kol J. Kalanke, J. Mingram, S. Lauterbach, R. Usubaliev, and A. Brauer https://doi.org/10.1594/PANGAEA.909981

Short summary

Our study presents the first seasonally laminated (varved) sediment record covering almost the entire Holocene in high mountainous arid Central Asia. The established floating varve chronology is confirmed by two terrestrial radiocarbon dates, whereby aquatic radiocarbon dates reveal decreasing reservoir ages up core. Changes in seasonal deposition characteristics are attributed to changes in runoff and precipitation and/or to evaporative summer conditions.