Geochemical characteristics and geological significance of the Paleoproterozoic volcanic rocks from the Xiaoliangling Formation in the Luliang area, Shanxi Province

	Geochemical characteristics and geological significance of the Paleoproterozoic volcanic rocks from the Xiaoliangling Formation in the Luliang area, Shanxi Province
	Xu YongHang ; Zhao TaiPing ; Peng Peng ; Zhai MingGuo ; Qi Liang ; Luo Yan
刊名	ACTA PETROLOGICA SINICA
	2007-05-01
卷号	23 期号:5 页码:1123-1132
关键词	Xiaoliangling Formation Xiong'er group geochemical characteristics Paleoproterozoic North China Craton
ISSN号	1000-0569
文献子类	Article
英文摘要	The volcanic rocks of the Xiaoliangling Formation unconformably overly a paleoproterozoic crystalline basement (L liang Group) in the L liang area. The Xiaoliangling Formation comprises basaltic-andesite and dacite-rhyolite, and display a composition gap of 57% similar to 63 % SiO(2), The volcanic rocks are enriched in LILE (e. g. Ba and K) and LREE, depleted in HFSE (e. g. Nb and Ta), similar to the OIB. The distributions of major, trace element and Nd isotope demonstrate that both basaltic-andesite and dacite-rhyolite are from co-magmatism source. Crystal fractionation is the main factor to control the composition gap of the volcanic rocks. The are geochemical characteristics are the results of an enriched subcontinental lithospheric mantle previously contaminated by a subducted slab, not crustal contamination. This study employed an LA-ICP-MS (laser ablation-inductively coupled plasma mass spectrometry) to analyze rhyolite zircons from the top of Xiaoliangling Formation for U-Pb isotopic chronological age, the age of the rhyolite zircons is 1779 +/- 20Ma ((207) Pb/(206) Pb age). The stratigraphic, petrographic, geochemical characteristics, Nd isotope and chronology of the volcanic rocks from the Xiaoliangling Formation are consistent with the characteristics of the Xiong I er Group suggest that the Xiaoliangling Formation is an equivalent of the Xiong'er Group in the L liang area. The Xiaoliangling Formation and the Xiong'er Group were formed in an aborted continental rifting setting and probably triggered by mantle plume.
WOS关键词	NORTH CHINA CRATON ; DYKE SWARMS ; CHEMICAL CLASSIFICATION ; TRACE-ELEMENT ; XIONGER GROUP ; BREAKUP ; MANTLE ; SUPERCONTINENT ; CONSTRAINTS ; SUBDUCTION
WOS研究方向	Geology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000248135100024
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/67652]
专题	中国科学院地质与地球物理研究所
通讯作者	Xu YongHang
作者单位	1.Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100039, Peoples R China 3.Univ Hong Kong, Dept Earth Sci, Hong Kong, Hong Kong, Peoples R China
推荐引用方式 GB/T 7714	Xu YongHang,Zhao TaiPing,Peng Peng,et al. Geochemical characteristics and geological significance of the Paleoproterozoic volcanic rocks from the Xiaoliangling Formation in the Luliang area, Shanxi Province[J]. ACTA PETROLOGICA SINICA,2007,23(5):1123-1132.
APA	Xu YongHang,Zhao TaiPing,Peng Peng,Zhai MingGuo,Qi Liang,&Luo Yan.(2007).Geochemical characteristics and geological significance of the Paleoproterozoic volcanic rocks from the Xiaoliangling Formation in the Luliang area, Shanxi Province.ACTA PETROLOGICA SINICA,23(5),1123-1132.
MLA	Xu YongHang,et al."Geochemical characteristics and geological significance of the Paleoproterozoic volcanic rocks from the Xiaoliangling Formation in the Luliang area, Shanxi Province".ACTA PETROLOGICA SINICA 23.5(2007):1123-1132.