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

doi:10.1016/j.cretres.2008.03.001

	A new Cretaceous age for the Saiqu "melange," southern Tibet: evidence from Radiolaria
	Li, Guobiao 1,2; Wan, Xiaoqiao 1; Liu, Wencan 1; Bucher, Hugo 2; Li, Hongsheng 3; Goudemand, Nicolas 2
刊名	CRETACEOUS RESEARCH
	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
DOI	10.1016/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
出版者	ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD
WOS记录号	WOS:000262120400003
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)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/70830]
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.