Provenance analysis reveals mountain uplift in the midsection of the Altyn Tagh Fault during the Middle Miocene

doi:10.1139/cjes-2016-0090

	Provenance analysis reveals mountain uplift in the midsection of the Altyn Tagh Fault during the Middle Miocene
	Zhang, ZG (Zhang, Zhiguo)1,2,3; Nie, JS (Nie, Junsheng)4; Fang, XM (Fang, Xiaomin)1,2; Zhang, ZG
刊名	CANADIAN JOURNAL OF EARTH SCIENCES
	2017
卷号	54 期号:3 页码:278-289
关键词	NORTHERN TIBETAN PLATEAU U-PB GEOCHRONOLOGY MAGDALENA VALLEY BASIN DETRITAL-ZIRCON QAIDAM BASIN CENOZOIC EXHUMATION TECTONIC EVOLUTION NORTHWEST CHINA NORTHEASTERN TIBET (U-TH)/HE AGES
DOI	10.1139/cjes-2016-0090
文献子类	Article
英文摘要	The Altyn Tagh Fault (ATF) defines the northern margin of the Tibetan Plateau; therefore, its tectonic history is key to understanding the plateau's northward growth. However, our understanding of ATF tectonics is incomplete, owing in part to a lack of constraints in detailed basin evolution studies of this region. Approximately 1700 m of Middle Miocene-Pliocene clastic strata extracted from a section of the Yitunbulake Basin adjacent to the midsection of the ATF records the uplift of the Altyn Tagh Range. This paper reports 490 concordant detrital zircon U-Pb ages derived from this set of strata. In addition, paleocurrents and conglomerate clastic compositions were measured to determine the provenance of the basin. The dominant detrital zircon age populations within these sedimentary rocks are 260-240, 500-400, and 950-900 Ma. The 260-240 Ma component decreases sharply above the Lower (Xia) Youshashan (XYSS) Formation. Moreover, we performed (U-Th)/He dating on 260-240 Ma detrital zircons from the XYSS Formation to determine its source region. The results indicate that sandstones in this formation are most likely sourced immediately from plutonic rocks widely distributed in the Eastern Kunlun Mountains. The upward change in detrital zircon U-Pb age components in the section demonstrates that widespread surface uplift of the Akatengneng Mountains in the midsection of the ATF likely occurred after similar to 16-15 Ma, which is synchronous with accelerated tectonic deformation along the ATF and a rapid increase in the sedimentation rate in the Qaidam Basin since the Middle Miocene.
学科主题	地质学
WOS研究方向	Geology
语种	英语
WOS记录号	WOS:000395535800005
内容类型	期刊论文
源URL	[http://ir.itpcas.ac.cn/handle/131C11/8320]
专题	青藏高原研究所_图书馆
通讯作者	Zhang, ZG
作者单位	1.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Inst Tibetan Plateau Res, Beijing 100101, Peoples R China. 2.Chinese Acad Sci, Key Lab Continental Collis & Plateau Uplift, Inst Tibetan Plateau Res, Beijing 100101, Peoples R China. 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China. 4.Lanzhou Univ, Coll Earth & Environm Sci, Minist Educ, Key Lab Western Chinas Environm Syst, Lanzhou 730000, Peoples R China.
推荐引用方式 GB/T 7714	Zhang, ZG ,Nie, JS ,Fang, XM ,et al. Provenance analysis reveals mountain uplift in the midsection of the Altyn Tagh Fault during the Middle Miocene[J]. CANADIAN JOURNAL OF EARTH SCIENCES,2017,54(3):278-289.
APA	Zhang, ZG ,Nie, JS ,Fang, XM ,&Zhang, ZG.(2017).Provenance analysis reveals mountain uplift in the midsection of the Altyn Tagh Fault during the Middle Miocene.CANADIAN JOURNAL OF EARTH SCIENCES,54(3),278-289.
MLA	Zhang, ZG ,et al."Provenance analysis reveals mountain uplift in the midsection of the Altyn Tagh Fault during the Middle Miocene".CANADIAN JOURNAL OF EARTH SCIENCES 54.3(2017):278-289.