Tectonic setting of the Helong Block: Implications for the northern boundary of the eastern North China Craton

doi:10.1360/02yd0282

	Tectonic setting of the Helong Block: Implications for the northern boundary of the eastern North China Craton
	Zhang, YB ; Wu, FY ; Zhai, MG ; Lu, XP
刊名	SCIENCE IN CHINA SERIES D-EARTH SCIENCES
	2005-10-01
卷号	48 期号:10 页码:1599-1612
关键词	La-icpms Ziron U-pb Dating Bailiping Complex Helong Block North China Craton Sr-nd Isotope
ISSN号	1006-9313
DOI	10.1360/02yd0282
文献子类	Article
英文摘要	LA-ICP-MS zircon U-Pb dating indicates that the Bailiping granitic pluton was emplaced during Late Paleozoic to Early Cretaceous (285-116 Ma) by four distinct magmatic episodes, arguing against the previous thought that the Bailiping granites were emplaced during Archean, Proterozoic or Early Paleozoic. It is suggested that the so-called Archean Jinchengdong granite-greenstone belt, mainly composed of Bailiping granites, should be broken down. Sr-Nd isotopic compositions of the Bailiping granites are similar to those of the Phanerozoic granites in the Xing'an-Mongolian orogenic belt, suggesting that their parental magmas were mainly derived from a juvenile crust with some contamination of ancient crustal materials during magma rising and/or emplacement. Therefore, the basement of the Helong Block is similar to that in the northern Xing'an-Mongolian Orogenic Belt, but different from that of the North China Craton. It is proposed that the Archean Jinchengdong complex in this area is probably an exotic slice from the North China Craton, which indicates that the Fu'erhe-Gudonghe Fault, located in northern part of the Helong area, is not the boundary between the North China Craton and the Xing'an-Mongolian Orogenic Belt. The possible boundary should be located further southward more than 50 km and near the Baitoushan volcano.
WOS关键词	NORTHEASTERN CHINA ; CRUSTAL GROWTH ; ICP-MS ; U-PB ; GRANITES ; AGE ; ABLATION ; ZIRCONS
WOS研究方向	Geology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000233344000003
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/65674]
专题	中国科学院地质与地球物理研究所
通讯作者	Zhang, YB
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Reg Geol & Mineral Resources Survey Jilin Provinc, Changchun 130062, Peoples R China
推荐引用方式 GB/T 7714	Zhang, YB,Wu, FY,Zhai, MG,et al. Tectonic setting of the Helong Block: Implications for the northern boundary of the eastern North China Craton[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2005,48(10):1599-1612.
APA	Zhang, YB,Wu, FY,Zhai, MG,&Lu, XP.(2005).Tectonic setting of the Helong Block: Implications for the northern boundary of the eastern North China Craton.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,48(10),1599-1612.
MLA	Zhang, YB,et al."Tectonic setting of the Helong Block: Implications for the northern boundary of the eastern North China Craton".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 48.10(2005):1599-1612.