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The Cryosphere An interactive open-access journal of the European Geosciences Union
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Volume 12, issue 1
The Cryosphere, 12, 163–168, 2018
https://doi.org/10.5194/tc-12-163-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 3.0 License.
The Cryosphere, 12, 163–168, 2018
https://doi.org/10.5194/tc-12-163-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 3.0 License.

Brief communication 16 Jan 2018

Brief communication | 16 Jan 2018

The first luminescence dating of Tibetan glacier basal sediment

Zhu Zhang, Shugui Hou, and Shuangwen Yi Zhu Zhang et al.
  • School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, 210093, China

Abstract. Dating ice cores drilled in the high mountain glaciers is difficult because seasonal variations cannot be traced at depth due to rapid thinning of the ice layers. Here we provide the first luminescence dating of the basal sediment of the Chongce ice cap in the north-western Tibetan Plateau. Assuming the sediment is of similar (or older) age as the surrounding ice, the luminescence dating of 42 ± 4 ka provides an upper constraint for the age of the bottom ice at the drilling site. This result is more than 1 order of magnitude younger than the previously suggested age of the basal ice of the nearby Guliya ice cap (∼ 40 km in distance).

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Short summary
We provide the first luminescence dating of the basal sediment of the Chongce ice cap in the western Kunlun Mountains on the north-western Tibetan Plateau (TP), which gives an upper constraint for the age of the bottom ice at the drilling site. The age is more than 1 order of magnitude younger than the previously suggested age of the basal ice of the nearby Guliya ice cap (~ 40 km away from the Chongce ice cap). This work provides an important step towards better understanding the TP ice cores.
We provide the first luminescence dating of the basal sediment of the Chongce ice cap in the...
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