The last glaciation in the headwater area of the Xiaokelanhe River, Chinese Altai: Evidence from 10 Be exposure-ages
作者: Guocheng DongWeijian ZhouYunchong FuLi ZhangGuoqing ZhaoMing Li
作者单位: 1State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710061, China
2State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Science, Lanzhou, 730000, China
3CAS Center for Excellence in Quaternary Science and Global Change, Xi'an, 710061, China
4Shaanxi Key Laboratory of Accelerator Mass Spectrometry Technology and Application, Xi'an AMS Center of IEECAS & Xi'an Jiaotong University, Xi'an, 710061, China
刊名: Quaternary Geochronology, 2020, Vol.56
来源数据库: Elsevier Journal
DOI: 10.1016/j.quageo.2020.101054
关键词: Last glaciation10 Be surface exposure datingXiaokelanhe river basinAltai mountains
原始语种摘要: Abstract(#br)The timing and extent of the last glaciation in the Altai Mountains are key to understanding climate change in this critical region. However, robust glacial chronologies are sparse across the Altai Mountains, especially in the Chinese Altai, impeding the correlation of glacial events and examination of the possible climate forcing mechanisms. Here, we report twenty new 10 Be exposure-ages obtained from two moraines in the headwater area of the Xiaokelanhe River, Chinese Altai. The inner latero-frontal moraine yields exposure-ages ranging from 16.60 ± 1.00 to 20.41 ± 1.15 ka (n = 5), reflecting a limited advance during the global Last Glacial Maximum (LGM). The morpho-stratigraphically older moraine remnants have exposure-ages of 14.36 ± 0.94–38.98 ± 2.23 ka (n = 15). The...
全文获取路径: Elsevier  (合作)
影响因子:4.015 (2012)

  • glaciation 冰川酌
  • headwater 河源头
  • exposure 暴露