Mature Archean continental crust in the Yangtze craton: Evidence from;petrology, geochronology and geochemistry

doi:10.1007/s11434-013-5668-7

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	Mature Archean continental crust in the Yangtze craton: Evidence from;petrology, geochronology and geochemistry
	Wang ZhengJiang 4; Wang Jian ; Du QiuDing ; Deng Qi 1; Yang Fei 2; Wu Hao 1
刊名	CHINESE SCIENCE BULLETIN
	2013
卷号	58 期号:19 页码:2360-2369
关键词	Yangtze craton Neoarchean mature continental crust A-type granite Yangpo Group
ISSN号	1001-6538;EI 1861-9541
DOI	10.1007/s11434-013-5668-7
英文摘要	Previous studies have shown that the Archean basement is widely distributed throughout the Yangtze craton. To date, however, Archean basement terrains have not been found, except for a few Kongling high-grade metamorphic terrains in the Huangling dome that have been confirmed to be of Archean age. To further understand the basement component and crustal evolution of the Yangtze craton, we carried out a petrological, geochronological and geochemical study of the Jinshan K-feldspar granite emplaced within the Yangpo Group, located in Huji Town, Zhongxiang City, Hubei Province. Results indicate that the zircon SHRIMP U-Pb age of the Jinshan granite is 2655 +/- 9 Ma, placing it within the middle Neoarchean. Chemically, this pluton yields abundant silica and alkalis and is depleted in Ca, Mg and Ti. Furthermore, it is enriched in Rb, Th, Ga, Y and Zr, depleted in Sr, Ba, Nb and Ta, and especially lacking in Eu. High ratios of FeO*/MgO (32.0 to 58.7) and 10(4)xGa/Al (3.19 to 3.41) were also found. The pluton exhibits characteristics typical of A-type granites with crustal source magmas. Moreover, the meta-sedimentary rock association of the Yangpo Group, into which the pluton intruded, clearly shows relatively stable depositional environments of a shallow shelf sequence. Therefore, before the middle Neoarchean, the Yangtze craton contained mature continental crust. This breakthrough discovery opens a new window on the study of the formation and evolution of the Yangtze craton basement.
学科主题	前寒武纪地质
WOS关键词	A-TYPE GRANITES ; U-PB AGE ; NORTH CHINA CRATON ; SOUTH CHINA ; HF ISOTOPE ; GEOLOGICAL SIGNIFICANCE ; ELEMENT EVIDENCE ; ROCKS ; PETROGENESIS ; EVOLUTION
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000321952900015
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/39991]
专题	中国地质调查局成都地质调查中心
作者单位	1.Minist Land & Resources Peoples Republ China, Chengdu Inst Geol & Mineral Resources, Chengdu 610082, Peoples R China. 2.Chinese Acad Geol Sci, Grad Fac, Beijing 100037, Peoples R China. 3.Shandong Univ Sci & Technol, Grad Fac, Qingdao 266510, Peoples R China. 4.中国地质调查局成都地质调查中心
推荐引用方式 GB/T 7714	Wang ZhengJiang,Wang Jian,Du QiuDing,et al. Mature Archean continental crust in the Yangtze craton: Evidence from;petrology, geochronology and geochemistry[J]. CHINESE SCIENCE BULLETIN,2013,58(19):2360-2369.
APA	Wang ZhengJiang,Wang Jian,Du QiuDing,Deng Qi,Yang Fei,&Wu Hao.(2013).Mature Archean continental crust in the Yangtze craton: Evidence from;petrology, geochronology and geochemistry.CHINESE SCIENCE BULLETIN,58(19),2360-2369.
MLA	Wang ZhengJiang,et al."Mature Archean continental crust in the Yangtze craton: Evidence from;petrology, geochronology and geochemistry".CHINESE SCIENCE BULLETIN 58.19(2013):2360-2369.