Further geochronological constraints on the Xiuyan impact crater in northeast China  

作　　者：Zeyang ZHU Chang HUANG Jing WU Yawei LI Zhihao SUN Min ZHANG Bin ZHANG Sheng-Hua LI Jiaqi LIU 

机构地区：[1]Key Laboratory of Cenozoic Geology Environment,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China [2]Department of Earth Sciences,The University of Hong Kong,Hong Kong 999077,China [3]College of Tourism and Planning,Pingdingshan University,Pingdingshan 467400,China [4]School of Water Conservancy and Transportation,Zhengzhou University,Zhengzhou 450000,China [5]Geothermal and Ecological Geology Research Center,Zhengzhou University,Zhengzhou 450000,China

出　　处：《Frontiers of Earth Science》2024年第4期683-695,共13页地球科学前沿(英文版)

基　　金：supported by the National Natural Science Foundation of China (Grant Nos.41972190,42302344).

摘　　要：The Xiuyan impact crater is the only officially recognized impact crater in China, and its formation time remains unclear. In this study, we investigated the ages of Xiuyan impact crater lake sediments from a 99-m composite borehole using luminescence and radiocarbon dating. The results showed that all the radiocarbon ages were saturated and that the surface sediments in the crater lake were dated to ~331–334 ka. Furthermore, the luminescence ages of lake sediments at depths below approximately 37 m also appear to be saturated. The evolutionary history of the Xiuyan impact crater lake was reconstructed by incorporating sedimentological, geomorphological, and geochronological analyses. Based on the age-depth model results of luminescence ages above a depth of 37 m, it is suggested that the crater lake underwent several stages: initial formation at approximately 1201 ± 133 ka, subsequent filling with water and sediment, overflow, and eventual disappearance at ~331–334 ka.

关 键 词：Xiuyan impact crater/luminescence dating/age saturation/impact age/northeast China 

分 类 号：P18[天文地球—天文学]