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A new Cretaceous age for the Saiqu "melange," southern Tibet: evidence from Radiolaria

文献类型：期刊论文

作者Li, Guobiao1,2; Wan, Xiaoqiao1; Liu, Wencan1; Bucher, Hugo2; Li, Hongsheng3; Goudemand, Nicolas2
刊名CRETACEOUS RESEARCH
出版日期2009-02-01
卷号30期号:1页码:35-40
关键词Melange Radiolaria Microfossil Late Cretaceous Zongzhuo Formation Tibet
ISSN号0195-6671
DOI10.1016/j.cretres.2008.03.001
文献子类Article
英文摘要This study concerns the melange that crops out in the north of Saiqu, Sagya County, southern Tibet. The age of the melange has been debated for years, because the ages of fossils from various blocks conflicted with each other, and no macrofossils had been discovered from the matrix. Furthermore, no one had looked at the matrix for microfossils, mainly because of their mistaking this suite of melange as straightforward sedimentary strata. However, abundant microfossils are present in the matrix of the melange, and four radiolarian assemblages have been recognized: (1) Holocryptocanium aff. barbui-Dictyomitra turris; (2) Acanthocircus dicrancanthos-Thanarla pulchra; (3) Thanarla veneta-Pseudodictyomitra pseudomacrocephala; and (4) Dictyomitra magnifica-Dictyomitra turritum. The matrix-derived radiolarian assemblages indicate a Late Cretaceous age. The melange in Saiqu can be correlated with the Zongzhuo Formation of neighbouring regions by either lithological associations or fossil assemblages. Consequently, the melange has been referred to the Upper Cretaceous Zongzhuo Formation, instead of the Triassic Xiukang Group, with which it was previously associated. The melange of the Zongzhuo Formation resulted from the subduction of the Indian Plate beneath the Asian Plate during the Late Cretaceous. (C) 2008 Elsevier Ltd. All rights reserved.
WOS研究方向Geology ; Paleontology
语种英语
WOS记录号WOS:000262120400003
出版者ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD
资助机构National Basic Research Program of China(2006CB701400) ; National Basic Research Program of China(2006CB701400) ; National Natural Science Foundation of China(40672020 ; National Natural Science Foundation of China(40672020 ; Project of the Geological Survey of China(H45C004004 ; Project of the Geological Survey of China(H45C004004 ; 40472011) ; 40472011) ; G45C001004) ; G45C001004) ; National Basic Research Program of China(2006CB701400) ; National Basic Research Program of China(2006CB701400) ; National Natural Science Foundation of China(40672020 ; National Natural Science Foundation of China(40672020 ; Project of the Geological Survey of China(H45C004004 ; Project of the Geological Survey of China(H45C004004 ; 40472011) ; 40472011) ; G45C001004) ; G45C001004) ; National Basic Research Program of China(2006CB701400) ; National Basic Research Program of China(2006CB701400) ; National Natural Science Foundation of China(40672020 ; National Natural Science Foundation of China(40672020 ; Project of the Geological Survey of China(H45C004004 ; Project of the Geological Survey of China(H45C004004 ; 40472011) ; 40472011) ; G45C001004) ; G45C001004) ; National Basic Research Program of China(2006CB701400) ; National Basic Research Program of China(2006CB701400) ; National Natural Science Foundation of China(40672020 ; National Natural Science Foundation of China(40672020 ; Project of the Geological Survey of China(H45C004004 ; Project of the Geological Survey of China(H45C004004 ; 40472011) ; 40472011) ; G45C001004) ; G45C001004)
源URL[http://ir.iggcas.ac.cn/handle/132A11/70828]  
专题中国科学院地质与地球物理研究所
通讯作者Li, Guobiao
作者单位1.China Univ Geosci, Beijing 100083, Peoples R China
2.Univ Zurich, Palaontol Inst & Museum, CH-8006 Zurich, Switzerland
3.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Li, Guobiao,Wan, Xiaoqiao,Liu, Wencan,et al. A new Cretaceous age for the Saiqu "melange," southern Tibet: evidence from Radiolaria[J]. CRETACEOUS RESEARCH,2009,30(1):35-40.
APA Li, Guobiao,Wan, Xiaoqiao,Liu, Wencan,Bucher, Hugo,Li, Hongsheng,&Goudemand, Nicolas.(2009).A new Cretaceous age for the Saiqu "melange," southern Tibet: evidence from Radiolaria.CRETACEOUS RESEARCH,30(1),35-40.
MLA Li, Guobiao,et al."A new Cretaceous age for the Saiqu "melange," southern Tibet: evidence from Radiolaria".CRETACEOUS RESEARCH 30.1(2009):35-40.

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来源：地质与地球物理研究所

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