Detrital-zircon geochronology from the metasedimentary rocks of the;Suizhou Group in the southern foot of the Tongbaishan Orogen and their;geological significance

	Detrital-zircon geochronology from the metasedimentary rocks of the;Suizhou Group in the southern foot of the Tongbaishan Orogen and their;geological significance
	Xue HuaiMin 3; Ma Fang 1
刊名	ACTA PETROLOGICA SINICA
	2013
卷号	29 期号:2 页码:564-580
关键词	Suizhou Group Metasedimentary rocks Detrital-zircon LA-ICPMS zircon U-Pb datting Neoproterozoic Northern margin of the Yangtze Craton
ISSN号	1000-0569
英文摘要	The Suizhou-Zaoyang area (northern margin of the Yangtze Craton), the least affected area of the whole Qinling-Tongbaishan-Dabieshan-Sulu orogen and their foreland by the deep subduction of the Yangtze Craton beneath the North China Craton and concomitant HP-UHP metamorphism during Triassic, relatively well preserved Precambrian basement of the northern Yangtze Craton. These low-grade metamorphosed Precambrian rocks not only provide an ideal opportunity to study the palaeo-tectonic setting of the northern Yangtze Craton, but also are rare-references for resuming protolithes of the metamorphic complex in the orogen. The Precambrian rocks exposed here include Neoproterozoic volcanic-sedimentary rock series (Suizhou Group) and voluminous Neoproterozoic ultramafic-mafic sill swarms. In this work, we used LA-ICP-MS zircon U-Pb technique dating detrital zircons from the metasedimentary samples of the Suizhou Group, yielding results as follow; (1) The youngest age of detrital-zircon from the metasediments of the Suizhou Group is about 720Ma, which means that the formed age of the Suizhou Group was mainly later than this time; (2) Zircon grains with ages from about 700Ma to 1000Ma are maximum detrital zircon group, with peak value at about 800Ma, showing that the magmatic rocks formed in Neoproterozoic era, especially medium to late stage of the Neoproterozoic, were foremost source of the Suizhou Group; (3) There are many zircon grains with ages from 1700Ma to 2100Ma, showing that the magmatic rocks formed in the medium to late stage of the Paleoproterozoic were also one of important sources; (4) Existing of detrital-zircon with ages of early stage of Paleoproterozoic and Archaean imply that this era of stratum may exist in the northern margin of the Yangtze Craton.
学科主题	变质岩岩石学
WOS关键词	NEOPROTEROZOIC TECTONIC EVOLUTION ; ULTRAHIGH-PRESSURE METAMORPHISM ; GA ; CONTINENTAL-CRUST ; EASTERN DABIE SHAN ; YANGTZE CRATON ; CENTRAL CHINA ; GEOCHEMICAL CHARACTERISTICS ; GRANITIC GNEISSES ; JIANGNAN OROGEN ; IGNEOUS ; ROCKS
WOS研究方向	Geology
语种	中文
出版者	SCIENCE PRESS
WOS记录号	WOS:000317531300015
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/40079]
专题	中国地质科学院地质研究所
作者单位	1.Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China. 2.Peking Univ, Sch Earth & Space Sci, Beijing 100871, Peoples R China. 3.中国地质科学院地质研究所
推荐引用方式 GB/T 7714	Xue HuaiMin,Ma Fang. Detrital-zircon geochronology from the metasedimentary rocks of the;Suizhou Group in the southern foot of the Tongbaishan Orogen and their;geological significance[J]. ACTA PETROLOGICA SINICA,2013,29(2):564-580.
APA	Xue HuaiMin,&Ma Fang.(2013).Detrital-zircon geochronology from the metasedimentary rocks of the;Suizhou Group in the southern foot of the Tongbaishan Orogen and their;geological significance.ACTA PETROLOGICA SINICA,29(2),564-580.
MLA	Xue HuaiMin,et al."Detrital-zircon geochronology from the metasedimentary rocks of the;Suizhou Group in the southern foot of the Tongbaishan Orogen and their;geological significance".ACTA PETROLOGICA SINICA 29.2(2013):564-580.