塔里木二叠纪基性-中性-酸性岩浆岩的年代学及其地质意义

CORC > 北京大学 > 地球与空间科学学院

	塔里木二叠纪基性-中性-酸性岩浆岩的年代学及其地质意义; Geochronology of the Permian basic-intermediate-acidic magma suite from Tarim, Northwest China and its geological implications.
	陈咪咪 ; 田伟 ; 张自力 ; 潘文庆 ; 宋宇
刊名	岩石学报
	2010
关键词	塔里木溢流玄武岩大火成岩省二叠纪锆石SHRIMP U-Pb年龄 Tarim Flood basalt Large Igneous Province (LIP) Permian Zircon SHRIMP U-Pb age
英文摘要	塔里木西部柯坪地区出露的早二叠纪玄武岩与盆地内其他地区广泛分布的玄武岩共同构成一个面积约0.25Mkm~2的溢流玄武岩省。巴楚地区出露的早二叠纪辉绿岩、正长岩、石英正长岩与石英正长斑岩等多种岩浆岩构成了连续的基性-中性-酸性岩浆序列。野外露头观察表明,巴楚麻扎尔塔格地区的基性-中性-酸性岩浆岩为近同时侵位。柯坪塔格开派兹雷克组顶部层位玄武岩的锆石SHRIMP U-Pb年龄为279.0±4.5Ma,该年龄值可限定该区二叠纪溢流玄武岩喷发的最晚时限。巴楚麻扎尔塔格石英正长斑岩脉的锆石SHRIMP U-Pb年龄为273.0±3.7Ma,与前人测定的巴楚辉绿岩脉和正长岩的锆石年龄在误差范围内一致,表明...; The Early Permian basalt front Keping, western Tarim, China, together with Permian basalt from elsewhere Tarim basin, constitute a Large Igneous Province (LIP) that coveres an residue area of similar to 0.25Mkm(2). Zircon SHRIMP U-Pb age of basalt front top of Kaparziletke Formation is 279. 0 +/- 4 5Ma, winch constrains the youngest time of the Tarim Permian flood basalt eruption An Early Permian basic-intermediate-acidic magma suite, including diabase, syenite, quartz syemte and quartz syenitic porphyry dyke, intruded into Mazhatarger mountain of Bachu area, western Tarim The nearly simultaneous emplacement of Mazhatarger basic-intermediate-acidic magma suite is proved by the outcrop evidence. Zircon SHRIMP U-Pb age of the quartz syenitic porphyry dyke from Mazhatarger is 273 0 +/- 3. 7Ma, which is same as published mum ages of Racial diabase and Mazhatarger syemte within error The above ages show the similarity of emplacement tunes of has intermediate and acidic magmas from the Bachu area, which is about in 275Ma Based on the published high-accuracy ages, it is proposed in this paper that the Tarim Large Igneous Province has a magmatism lifespan of similar to 20M yrs. The flood basalt, which is thought to erupt mainly 291 similar to 287 Ma, constitutes the major pulse of the Tarim LIP and should be generated by partial melting of a plume head The voluminal-minor basic-intermediate-aerdie intrusions front Bachu, Yijiangfang and northern Tarim subsurface area at 282 similar to 273Ma. are supposed to belong to post major eruption magmatism of the Tarim LIP; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000275734400017&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); 29; 02; 559-572; 26
语种	中文
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/50172]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	陈咪咪,田伟,张自力,等. 塔里木二叠纪基性-中性-酸性岩浆岩的年代学及其地质意义, Geochronology of the Permian basic-intermediate-acidic magma suite from Tarim, Northwest China and its geological implications.[J]. 岩石学报,2010.
APA	陈咪咪,田伟,张自力,潘文庆,&宋宇.(2010).塔里木二叠纪基性-中性-酸性岩浆岩的年代学及其地质意义.岩石学报.
MLA	陈咪咪,et al."塔里木二叠纪基性-中性-酸性岩浆岩的年代学及其地质意义".岩石学报 (2010).