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学科主题: 地球科学::地质学
题名: Detrital zircon U-Pb geochronological and sedimentological study of, the Simao Basin, Yunnan: Implications for the Early Cenozoic evolution of the Red River
作者: Chen, Y (Chen, Yi)1, 2; Yan, MD (Yan, Maodu)1, 3; Fang, XM (Fang, Xiaomin)1, 3; Song, CH (Song, Chunhui)4, 5; Zhang, WL (Zhang, Weilin)1, 3; Zan, JB (Zan, Jinbo)1, 3; Zhang, ZG (Zhang, Zhiguo)1, 2; Li, BS (Li, Bingshuai)1; Yang, YP (Yang, Yongpeng)1, 2; Zhang, DW (Zhang, Dawen)1, 3
通讯作者: Yan, MD
关键词: PALEO-TETHYS OCEAN ; INDO-CHINA BLOCK ; TIBETAN PLATEAU ; SHEAR ZONE ; TECTONIC EVOLUTION ; AILAO-SHAN ; YANGTZE-RIVER ; SW CHINA ; PROVENANCE ANALYSIS ; CRUSTAL EVOLUTION
刊名: EARTH AND PLANETARY SCIENCE LETTERS
发表日期: 2017
DOI: 10.1016/j.epsl.2017.07.025
卷: 476, 期:0, 页:22-33
收录类别: SCI
合作性质: 国内
文章类型: Article
类目[WOS]: Geochemistry & Geophysics
研究领域[WOS]: Geochemistry & Geophysics
英文摘要: The paleo-Red River is suggested to have been a continental-scale drainage system connecting the Tibetan Plateau to the South China Sea. However, the evolution of the paleo-Red River is still under debate. This study presents new results from sedimentological analyses and detrital zircon U-Pb geochronologic data from fluvial sedimentary rocks of Paleocene to Oligocene age of the Simao Basin to constrain the nature of the paleo-drainage system of the Red River. The detrital zircon U-Pb results reveal multiple age groups at 190-240 Ma, 260-280 Ma, 450-540 Ma, 1700-1900 Ma and 2400-2600 Ma for the Paleocene to late Eocene Denghei Formation (Fm.), but only one conspicuous peak at 220-240 Ma for the late Eocene-Oligocene Mengla Fm. Provenance analyses illustrate that the former likely had source areas that included the Hoh-Xil, Songpan-Ganzi, northern Qiangtang, Yidun and western Yangtze Terranes, which are consistent with the catchments of the Upper and Lower Jinshajiang Segments, whereas the latter mainly transported material from a limited number of sources, such as the Lincang granitic intrusions west of the Simao Basin. Integrated with available detrital zircon U-Pb geochronologic and paleogeographic data, our study suggests the existence of a paleo-Red River during the Paleocene to late Eocene that was truncated and lost its northern sources after approximately 35 Ma, due to left-lateral strike-slip faulting of the Ailao Shan-Red River and clockwise rotation of the Lanping-Simao Terrane. (C) 2017 Elsevier B.V. All rights reserved.
语种: 英语
WOS记录号: WOS:000412259400003
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.itpcas.ac.cn/handle/131C11/7963
Appears in Collections:图书馆_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Continental Collis & Plateau Uplift, Beijing, Peoples R China.
2.Univ Chinese Acad Sci, Beijing, Peoples R China.
3.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China.
4.Lanzhou Univ, Sch Earth Sci, Lanzhou, Peoples R China.
5.Lanzhou Univ, Key Lab Western Chinas Mineral Resources Gansu Pr, Lanzhou, Peoples R China.

Recommended Citation:
Chen, Y ,Yan, MD ,Fang, XM ,et al. Detrital zircon U-Pb geochronological and sedimentological study of, the Simao Basin, Yunnan: Implications for the Early Cenozoic evolution of the Red River[J]. EARTH AND PLANETARY SCIENCE LETTERS,2017,476(0):22-33.
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