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Geochronology and Mineral Composition of the Pleistocene Sediments in Xitaijinair Salt Lake Region, Qaidam Basin: Preliminary Results
Zeng, Fangming1,2; Xiang, Shuyuan3
2017-08-01
发表期刊JOURNAL OF EARTH SCIENCE
卷号28期号:4页码:622-627
文章类型Article
摘要Xitaijinair (XT) Salt Lake, located in the western Qaidam Basin, is significant for reconstructing the evolution of inland drying climate. However, the chronological and mineralogical records from this lake are rare. This study investigated the chronology (accelerator mass spectrometry (AMS) C-14 ages and optically stimulated luminescence (OSL) ages) and mineral compositions of sediment in the 240-cm-deep XT Section of the Xitaijinair Salt Lake region. The conclusions are drawn as follows: (1) Nine AMS C-14 ages, ranging between 33 and 40 cal ka BP, are obviously younger than the two OSL ages (57.9 and 69.1 ka). The C-14 ages probably reflect contamination with modern carbon. (2) Both C-14 and OSL ages indicate that the surface of Xitaijinair Salt Lake region has suffered erosion. (3) The sediments of XT Section are composed of silicates (quartz, muscovite, clinochlore and albite), carbonates (calcite, dolomite, and ankertie), halite and gypsum.
关键词Qaidam Basin Xitaijinair Salt Lake Geochronology Pleistocene
WOS标题词Science & Technology ; Physical Sciences
关键词[WOS]QINGHAI-TIBETAN PLATEAU ; SHELL BAR ; RECORD ; AGE ; BP
收录类别SCI
语种英语
WOS研究方向Geology
WOS类目Geosciences, Multidisciplinary
WOS记录号WOS:000406391000006
引用统计
文献类型期刊论文
条目标识符http://ir.isl.ac.cn/handle/363002/6240
专题青海盐湖研究所知识仓储
盐湖地质与环境实验室
作者单位1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Comprehens & Highly Efficient Utilizat Sa, Xining 810008, Qinghai, Peoples R China
2.Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Salt Lake Geol & Environm Qinghai Prov, Xining 810008, Qinghai, Peoples R China
3.China Univ Geosci, Sch Earth Sci, Wuhan 430074, Hubei, Peoples R China
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Zeng, Fangming,Xiang, Shuyuan. Geochronology and Mineral Composition of the Pleistocene Sediments in Xitaijinair Salt Lake Region, Qaidam Basin: Preliminary Results[J]. JOURNAL OF EARTH SCIENCE,2017,28(4):622-627.
APA Zeng, Fangming,&Xiang, Shuyuan.(2017).Geochronology and Mineral Composition of the Pleistocene Sediments in Xitaijinair Salt Lake Region, Qaidam Basin: Preliminary Results.JOURNAL OF EARTH SCIENCE,28(4),622-627.
MLA Zeng, Fangming,et al."Geochronology and Mineral Composition of the Pleistocene Sediments in Xitaijinair Salt Lake Region, Qaidam Basin: Preliminary Results".JOURNAL OF EARTH SCIENCE 28.4(2017):622-627.
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