Late quaternary glaciation of the Tianshan, Central Asia, using cosmogenic Be-10 surface exposure dating

Kong, P; Fink, D; Na, C; Huang, F

Late quaternary glaciation of the Tianshan, Central Asia, using cosmogenic Be-10 surface exposure dating

Date

2009-09

Authors

Publisher

Elsevier

Abstract

Glacial deposits are present at the head of the Urumqi River valley, Tianshan, Central Asia. 10Be surface exposure ages of 15 boulders from three sites along a 12 km valley transect range from 9 to 21 ka suggesting emplacement by glacial retreat and advance commencing at the global last glacial maximum (LGM) and most likely abating in the early Holocene. Although the age spread for a given locality is not small, perhaps indicating post-depositional reworking, maximum ages per site are either coeval with or are post-LGM and inconsistent with previous pre-LGM electron spin resonance ages. © 2009, Elsevier Ltd.

Keywords

Asia, Beryllium 10, Electron spin resonance, Quaternary period, Glaciers, Geologic ages

Citation

Kong, P., Fink, D., Na, C., & Huang, F. (2009). Late quaternary glaciation of the Tianshan, Central Asia, using cosmogenic Be-10 surface exposure dating. Quaternary Research, 72(2), 229-233. doi:10.1016/j.yqres.2009.06.002