内蒙大青山地区黑云母花岗岩SHRIMP U-Pb定年及其构造意义

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	内蒙大青山地区黑云母花岗岩SHRIMP U-Pb定年及其构造意义; SHRIMP U-Pb dating of biotite granites in Daqingshan, Inner Mongolia, and its significance.
	张臣 ; 韩宝福 ; 刘树文 ; 季建清 ; 赵磊 ; 张磊
刊名	岩石学报
	2009
关键词	古元古代花岗岩 SHRIMP锆石年龄内蒙古 Paleoproterozoic granitiods SHRIMP zircon age Inner Mongolia
英文摘要	大青山黑云母花岗岩主要由钾长石(45%)、斜长石(15%～25%)、石英(25%)、黑云母(5%～10%)组成。主元素SiO_2含量69.48%～72.40%,K_2O+Na_2O含量7.74%～9.58%,K_2O>Na_2O,A/CNK为1.0～1.17,具过铝质-强过铝质花岗岩特征;稀土元素分馏较强,REE配分型式具中等负Eu异常;微量元素在原始地幔(PM)标准化蛛网图上显示Rb、Th、K、Nd相对富集,Nb、Sr、Ti相对亏损,岩石地球化学特征与碰撞花岗岩类似。本文对大青山地区料木山黑云母花岗岩进行高精度锆石SHRIMP U-Pb定年研究,其形成时间为2430±19Ma,可能代表鄂尔多...; The Daqingshan biotite granites consist mainly of orthoclase (45%), oligoclase (15% similar to 25%), quartz (25%) and biotite(5% similar to 10%) in the Daqingshan area of Inner Mongolia.. The biotite granites are characterized with SiO(2) (69.48% similar to 72.40%), K(2)O + Na(2)O (7.74% similar to 9.58%) contents, K(2)O > Na(2)O and A/CNK = 1.0 similar to 1.17, as well as fractionated BEE patterns with middle negative Eu anomalies. The biotite granites are relatively enriched Rb, Th, K, Nd and depleted Nb, Sr, Ti. These geochemical characteristics are similar to collision granites. Using high-precision SHRIMP U-Pb zircon dating method, We determine the Daqingshan biotite granites were formed at 2430 +/- 19Ma, the-results indicate that the collision event of Erduosi block with Yinshan block. Integrated with that the adakitic granitoids, sanukitiods, Closepet-type granitiods of Guyang and Wuchuan area displaced at 2470 similar to 2330Ma, and it indicating that subduction bearing an analogy to modern plate has taken on the Early Paleoproterozoic. Base oil the geochemistry and geochronology of the Palcoproterozoic granitiods, we suggested that the granulite terrain of Wulashan-Daqingshan is an Early Paleoproterozoic continent-continent collision orogenic belt.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000264895900008&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; SCI(E); 中文核心期刊要目总览(PKU); 中国科技核心期刊(ISTIC); 中国科学引文数据库(CSCD); 7; 03; 561-567; 25
语种	中文
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/49968]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	张臣,韩宝福,刘树文,等. 内蒙大青山地区黑云母花岗岩SHRIMP U-Pb定年及其构造意义, SHRIMP U-Pb dating of biotite granites in Daqingshan, Inner Mongolia, and its significance.[J]. 岩石学报,2009.
APA	张臣,韩宝福,刘树文,季建清,赵磊,&张磊.(2009).内蒙大青山地区黑云母花岗岩SHRIMP U-Pb定年及其构造意义.岩石学报.
MLA	张臣,et al."内蒙大青山地区黑云母花岗岩SHRIMP U-Pb定年及其构造意义".岩石学报 (2009).