Ancient landslide-dam events in the Jishi Gorge, upper Yellow River valley, China

被引：37

作者：

Dong, Guanghui ^{[1
]}

Zhang, Fanyu ^{[2
]}

Ma, Minmin ^{[1
]}

Fan, Yuxin ^{[1
]}

Zhang, Jiawu ^{[1
]}

Wang, Zongli ^{[1
]}

Chen, Fahu ^{[1
]}

机构：

[1] Lanzhou Univ, Res Sch Arid Environm & Climate Change, Key Lab Western Chinas Environm Syst, Minist Educ, Lanzhou 730000, Gansu, Peoples R China

[2] Lanzhou Univ, Dept Geol Engn, Key Lab Mech Disaster & Environm Western China, Minist Educ, Lanzhou 730000, Gansu, Peoples R China

来源：

QUATERNARY RESEARCH | 2014年 / 81卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Radiocarbon dating; OSL dating; Ancient landslides; Dammed lake; Jishi Gorge; Upper Yellow River valley; QINGHAI LAKE; CLIMATE; EARTHQUAKE; CALIBRATION; SCALE;

D O I：

10.1016/j.yqres.2013.09.003

中图分类号：

P9 [自然地理学];

学科分类号：

0705 ; 070501 ;

摘要：

Some scholars have argued that the formation and outburst of an ancient dammed lake in the Jishi Gorge at ca. 3700 cal yr BP resulted in the destruction of Lajia, the site of a famous prehistoric disaster in the Guanting Basin, upper Yellow River valley, China. However, the cause of the dammed lake and the exact age of the dam breaching are still debated. We investigated ancient landslides and evidence for the dammed lake in the Jishi Gorge, including dating of soil from the shear zone of an ancient landslide, sediments of the ancient dammed lake, and loess above lacustrine sediments using radiocarbon and optically stimulated luminescence (OSL) dating methods. Six radiocarbon dates and two OSL dates suggested that the ancient landslides and dammed lake events in the Jishi Gorge probably occurred around 8100 cal yr BP, and the ancient dammed lake was breached between 6780 cal yr BP and 5750 cal yr BP. Hence, the outburst of the ancient dammed lake in the Jishi Gorge was unrelated to the ruin of the Lajia site, but likely resulted in flood disasters in the Guanting Basin around 6500 cal yr BP. (C) 2013 University of Washington. Published by Elsevier Inc. All rights reserved.

引用

页码：445 / 451

页数：7

共 51 条

[1]

14 CLASTERC IA CASS (14C Laboratory of Archaeological Science and Techniques Experiment and Research Center IA CASS the Institute of Archaeology Chinese Academy of Social Sciences), 2005, ARCHAEOLOGY, V7, P57

[2]

14CLASTERC IA CASS (14C Laboratory of Archaeological Science and Techniques Experiment and Research Center IA CASS the Institute of Archaeology Chinese Academy of Social Sciences), 2003, ARCHAEOLOGY, V7, P64

[3]

Aitken M.J., 1985, Thermoluminescence Dating, P359

[4]

Alley RB, 1997, GEOLOGY, V25, P483, DOI 10.1130/0091-7613(1997)025<0483:HCIAPW>2.3.CO

[5]

[6] Equivalent dose estimation using a single aliquot of polymineral fine grains [J].