期刊
JOURNAL OF ASIAN EARTH SCIENCES
卷 198, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jseaes.2020.104381
关键词
Longmen Shan fold-and-thrust belt; Low-temperature thermochronology; Thrusting sequence; Deformation
资金
- National Natural Science Foundation of China [41771007, 41702220]
- National S&T Major Project of China [2017ZX05008001, 2016ZX05003-001]
The 2008 MW 7.8 Wenchuan earthquake in China led to intensive studies on the development and dynamic mechanisms of the Longmen Shan fold-and-thrust belt. To construct the uplift history of the Longmen Shan, previous works had undertaken numerous low-temperature thermochronological studies in mountainous area, in particular apatite and zircon (U-Th)/He dating, which provided valuable evidence for understanding phases of uplift in the Longmen Shan during the Cenozoic. However, few (U-Th)/He ages have been obtained from the Sichuan Basin, which leaves a blank in our understanding of the link between the Wenchuan earthquake and the out-of-sequence Longmen Shan. In this study, we carried out (U-Th)/He dating on apatite and zircon separated from samples collected in the Sichuan Basin and the frontal southern Longmen Shan. Together with previous low-temperature thermochronological studies, we reconstructed the thrusting sequence of the Longmen Shan. The results of dating of apatite suggest that thrusting in the Longmen Shan is temporally and spatially variable. After continuous thrust propagation into the Sichuan Basin (over several to tens of Myr), deformation migrated back into the mountain range, which in this case termed out-of-sequence style of deformation.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据