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Th-230 dating of stem carbonate deposits from Tai Cuo lake, western Tibetan Plateau, China

文献类型：期刊论文

作者Ma, Nina1,2; Ma, Zhibang3; Zheng, Mianping1,2; Wang, Hailei1,2
刊名QUATERNARY INTERNATIONAL
出版日期2012-02-10
卷号250页码:55-62
ISSN号1040-6182
DOI10.1016/j.quaint.2011.09.012
文献子类Article
英文摘要The saline lake Tai Cuo, located in western Tibetan Plateau, China, is a closed endorheic basin mainly recharged by meteoric water and groundwater. Carbonate sediments, mainly showing stem structure, are extensively developed in the first terrace of Tai Cuo lake area and are over 3 m thick. The U-series method has been applied to those carbonate deposits. Sieved carbonates samples, smaller than 0.595 mm (#30) and larger than 0.177 mm (#80), were the research object for Th-230 dating. The results indicate that the uranium contents are high, up to 6 similar to 14 ppm, and activity ratios of U-234/U-238 range from 1.533 at the top to 1.437 at the base of the succession, indicating that the sedimentary environment was relatively stable during the period. Ages obtained with precision of 1 similar to 3% have recorded environmental evolution history in this area during the period 13,340 similar to 5200 yr BP, with an error bar of only 240 similar to 89 yr, and are consistent with the lithological deposition sequence and greatly improved compared to previously published Th-230 chronologies. This chronology will be of great importance for interpreting the environmental changes in the study area. (C) 2011 Elsevier Ltd and INQUA. All rights reserved.
WOS关键词TOTAL-SAMPLE DISSOLUTION ; U-SERIES CHRONOLOGY ; IMPURE CARBONATES ; SOUTHEAST SPAIN ; SORBAS BASIN ; BALIKUN LAKE ; SALT LAKE ; KA BP ; EVOLUTION ; HOLOCENE
WOS研究方向Physical Geography ; Geology
语种英语
WOS记录号WOS:000300810800007
出版者PERGAMON-ELSEVIER SCIENCE LTD
资助机构National Natural Science Foundation of China(40531002 ; National Natural Science Foundation of China(40531002 ; China Geological Survey(1212010818657) ; China Geological Survey(1212010818657) ; 40872207) ; 40872207) ; National Natural Science Foundation of China(40531002 ; National Natural Science Foundation of China(40531002 ; China Geological Survey(1212010818657) ; China Geological Survey(1212010818657) ; 40872207) ; 40872207) ; National Natural Science Foundation of China(40531002 ; National Natural Science Foundation of China(40531002 ; China Geological Survey(1212010818657) ; China Geological Survey(1212010818657) ; 40872207) ; 40872207) ; National Natural Science Foundation of China(40531002 ; National Natural Science Foundation of China(40531002 ; China Geological Survey(1212010818657) ; China Geological Survey(1212010818657) ; 40872207) ; 40872207)
源URL[http://ir.iggcas.ac.cn/handle/132A11/84476]  
专题中国科学院地质与地球物理研究所
通讯作者Ma, Nina
作者单位1.CAGS, Inst Mineral Resources, MLR Key Lab Saline Lake Resources & Environm, Beijing 100037, Peoples R China
2.CAGS, R&D Ctr Saline Lake & Epithermal Deposit, Beijing 100037, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Ma, Nina,Ma, Zhibang,Zheng, Mianping,et al. Th-230 dating of stem carbonate deposits from Tai Cuo lake, western Tibetan Plateau, China[J]. QUATERNARY INTERNATIONAL,2012,250:55-62.
APA Ma, Nina,Ma, Zhibang,Zheng, Mianping,&Wang, Hailei.(2012).Th-230 dating of stem carbonate deposits from Tai Cuo lake, western Tibetan Plateau, China.QUATERNARY INTERNATIONAL,250,55-62.
MLA Ma, Nina,et al."Th-230 dating of stem carbonate deposits from Tai Cuo lake, western Tibetan Plateau, China".QUATERNARY INTERNATIONAL 250(2012):55-62.

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来源：地质与地球物理研究所

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