Late Quaternary fluvial terrace formation in the Luan River drainage basin,north China and its possible linkages with climate change and tectonic activation

作     者：Yu-chen Tian Xu-jiao Zhang Zhi-qiang Yin Hai Shao Ming-xu Gu Yingying-Ding Chao Peng Xiang-ge Zhang Yu-chen Tian;Xu-jiao Zhang;Zhi-qiang Yin;Hai Shao;Ming-xu Gu;Yingying-Ding;Chao Peng;Xiang-ge Zhang

作者机构：School of Earth Sciences and ResourcesChina University of Geosciences(Beijing)Beijing 100083China China institute of Geo-Environment MonitoringChina Geological SurveyMinistry of Natural ResourcesBeijing 100081China Hebei geological environment monitoring InstituteShijiazhuang 050021China 

出 版 物：《China Geology》 (中国地质（英文）)

年 卷 期：2023年第6卷第3期

页      面：395-408页

核心收录：

学科分类：070904[理学-构造地质学] 070905[理学-第四纪地质学] 070903[理学-古生物学与地层学(含：古人类学)] 0709[理学-地质学] 07[理学] 

基　　金：supported by the National Natural Science Foundation of China(41977258) the China Geological Survey(DD20190310,DD20221761) the National Key R&D Program of China(2018YFC1504704) 

主　　题：River terrace Paleoclimate change Tectonic activation Optically stimulated luminescence dating Marine isotope stage Last glacial maximum Neotectonics Geomorphology Geological survey engineering North China Plain 

摘      要：The Luan River is the most important water system in north-eastern Hebei Province,China and is located in the transitional zone of the Eastern Yan Mountains,North China Plain and Songliao *** well-developed river terraces of its tributary,the Yixun River,provide excellent information for studying neotectonics and climate *** are seven terraces in the lower reaches of the Yixun River,numbered *** optically stimulated luminescence dating results of 23 samples show that terraces T7-T2 formed at 111.36±5.83 ka,78.20±4.45 ka,65.29±4.15 ka,56.44±3.07 ka,40.08±2.66 ka,and 13.14±0.76 ka,respectively.A comparison with the oxygen isotope curves of deep-sea sediments reveals that the sediment formation of each terrace corresponded to cold periods of marine isotope stages MIS 4 and MIS 2 and the relatively cold periods of MIS 5e,MIS 3,and MIS *** the Late Pleistocene,the incision rate of the Yixun River has ranged from 0.371-1.740 mm/*** the formation of T7-T6,T5-T4,T4-T3,and T3-T2,the incision rate was ***,in the two stages during which T6-T5 and T2-T1 formed(13.14±0.76 ka to 0.58±0.08 ka and 10.79±0.64 ka to 0.16±0.01 ka),these rates reached 1.554 mm/a and 1.592-1.740 mm/a,*** approximately 30 ka,the activity of the Langying Fault increased,leading to footwall *** river gathered in the north of Langying to form the ancient Erdaowan Lake,which resulted in the drying of the river in the lower reaches of the Yixun River during the last glacial maximum without forming river *** the Early Holocene,headward erosion in the lower reaches of the Yixun River was enhanced,which resulted in the disappearance of the lake,and incised meandering formed due to increased *** on the analyses of river incision and the formation of ancient lakes and incised meandering,it was inferred that there have been three periods of strong tectonism in the river basin since the Late Pleistocene.