干旱区生态环境知识资源中心(Arid): Jurassic sediments geochemical constraints on provenance, weathering process, and palaeoclimate variation of the north margin of Qaidam Basin, north-eastern Tibetan Plateau

Arid

DOI	10.1002/gj.3542
	Jurassic sediments geochemical constraints on provenance, weathering process, and palaeoclimate variation of the north margin of Qaidam Basin, north-eastern Tibetan Plateau
	Hu, Junjie 1,2; Ma, Yinsheng 1,2; Li, Zongxing 1,2; Wu, Yi 3; Gao, Wanli 1; Peng, Bo 1,2; Wei, Xiaojie 1,2; Liu, Dapeng 4
通讯作者	Ma, Yinsheng ; Li, Zongxing
来源期刊	GEOLOGICAL JOURNAL
ISSN	0072-1050
EISSN	1099-1034
出版年	2020
卷号	55 期号:4 页码:3247-3257
英文摘要	The Jurassic sequence in the northern Qaidam Basin can be represented by the lower coal-bearing swamp-lacustrine sediments unit and the upper reddish clastic deposits suite, which recorded dramatic transition of deposit environment changes. Whole-rock geochemical data of this succession in Dameigou profile were used to reconstruct the provenance and chemical weathering history. Based on the major element discrimination diagrams, trace element ratios and chondritenormalized REE patterns, most sediments were derived from a similar source area with felsic-intermediate rocks as dominant contributors. Multiple geochemical parameters and index displayed good correlation, via vertical variations sequence, Jurassic chemical weathering history of northern Qaidam Basin was established, and four stages were recognized from the profile. Phases I and III experienced intense chemical weathering, while Phases II and IV are characterized by mild to moderate chemical weathering. Based on this, long-term Jurassic climatic evolution of the Qaidam Basin was reconstructed. Early-middle period of Early Jurassic and middle period of Middle Jurassic developed warm and humid climate. On the contrary, late Early Jurassic-early Middle Jurassic and late Middle Jurassic-Late Jurassic was deposited under relatively semiarid to arid climatic conditions.
英文关键词	aridification chemical weathering geochemistry Jurassic palaeoclimate Qaidam Basin
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000522724500043
WOS关键词	HUOBUXUN SAGS ; EVOLUTION ; SEGMENT ; HONGSHAN ; CHINA ; ROCKS ; PROTOTYPES ; TRACE
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314600
作者单位	1.Chinese Acad Geol Sci, Inst Geomech, Beijing 100081, Peoples R China; 2.Minist Nat Resources, Key Lab Paleomagnetism & Tecton Reconstruct, Beijing, Peoples R China; 3.Chongqing Inst Geol & Mineral Resources, Chongqing, Peoples R China; 4.China Univ Geosci, Sch Ocean Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Hu, Junjie,Ma, Yinsheng,Li, Zongxing,et al. Jurassic sediments geochemical constraints on provenance, weathering process, and palaeoclimate variation of the north margin of Qaidam Basin, north-eastern Tibetan Plateau[J],2020,55(4):3247-3257.
APA	Hu, Junjie.,Ma, Yinsheng.,Li, Zongxing.,Wu, Yi.,Gao, Wanli.,...&Liu, Dapeng.(2020).Jurassic sediments geochemical constraints on provenance, weathering process, and palaeoclimate variation of the north margin of Qaidam Basin, north-eastern Tibetan Plateau.GEOLOGICAL JOURNAL,55(4),3247-3257.
MLA	Hu, Junjie,et al."Jurassic sediments geochemical constraints on provenance, weathering process, and palaeoclimate variation of the north margin of Qaidam Basin, north-eastern Tibetan Plateau".GEOLOGICAL JOURNAL 55.4(2020):3247-3257.