Brief communication: New evidence further constraining Tibetan ice core chronologies to the Holocene

There is considerable controversy regarding the age ranges of Tibetan ice cores. The Guliya ice core was reported to reach as far back as ∼760 ka (kiloannum, i.e. 1000 years), whereas chronologies of all other Tibetan cores cover at most the Holocene. Here we present ages for two new ice cores reach...

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Bibliographic Details
Published in:The Cryosphere
Main Authors: Hou, Shugui, Zhang, Wangbin, Fang, Ling, Jenk, Theo M., Wu, Shuangye, Pang, Hongxi, Schwikowski, Margit
Format: Article in Journal/Newspaper
Language:English
Published: Copernicus Publications 2021
Subjects:
article
Verlagsveröffentlichung
ice core
The Cryosphere
Online Access:https://doi.org/10.5194/tc-15-2109-2021
https://noa.gwlb.de/receive/cop_mods_00056413
https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00056064/tc-15-2109-2021.pdf
https://tc.copernicus.org/articles/15/2109/2021/tc-15-2109-2021.pdf
Description
Summary:There is considerable controversy regarding the age ranges of Tibetan ice cores. The Guliya ice core was reported to reach as far back as ∼760 ka (kiloannum, i.e. 1000 years), whereas chronologies of all other Tibetan cores cover at most the Holocene. Here we present ages for two new ice cores reaching bedrock, from the Zangser Kangri (ZK) glacier in the northwestern Tibetan Plateau and the Shulenanshan (SLNS) glacier in the western Qilian Mountains. We estimated bottom ages of 8.90±0.570.56 ka and 7.46±1.461.79 ka for the ZK and SLNS ice core respectively, further constraining the time range accessible by Tibetan ice cores to the Holocene.

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