Eliminary Study on Geochemical Features and Genesis of Host Granites of Rexiang Copper Deposit in <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" /><st1:place w:st="on"><st1:PlaceName w:st="on">Western</st1:PlaceName> <st1:PlaceName w:st="on">Sichuan</st1:PlaceName> <st1:PlaceType w:st="on">Province</st1:PlaceType></st1:place> <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p>

line-level: 2" class=MsoNormal>Eliminary Study on Geochemical Features and Genesis of Host Granites of Rexiang Copper Deposit in Western Sichuan Province

详细信息

责任者：Fei Guangchun (College of Earth Sciences ; Chengdu University of Technology ; Chengdu 610059 ; China) ; Li Youguo
刊名：Xinjiang Geology
出版年：2009
卷期：27(3)
关键词：花岗岩 ; granite ; 四川 ; Sichuan Province
页码：p.276-279
图表：5 illus., 1 table, 11 refs.
分类号：0801
issnNo：ISSN1000-8845
isbnNo：CN65-1092/P

摘要

Rexiang copper deposit locates in secondary syncline core of Niang Yongfu syncline in hangding walls of Xiangcheng fault. It is a newly found copper deposit in Chuanxi areas, and the genesis is closely related to the Monzonitic Granites. Geochemistry of host granites in Rexiang copper enriched Rb, Th, U and Ta, strong depletion in Ba,Sr,Ti. The gross of REE content is high, LREE is relatively rich and the fractionation of LREE is higher than HREE. Eu is Strong depletion (δEu=0.08～0.21). According to the trace element discrimination diagrams for tectonic classification, diagenesis age, regional tectonic setting evolution, the preliminary genesis of Rexiang host Monzonitic Granites is that magma in intraplate fracture caused largely-scale melting and intrusion of the rock in hypabyssal crust because of intracontinental strike-slip in Himalayan intracontinental orogenic stage.

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