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	Geochemical characteristics of basalts in Beinke area and its geological significance, Inner Mongolia
	Chen ShengSheng; Fan QiCheng; Zhao YongWei; Shi RenDeng
通讯作者	Chen, SS (通讯作者)
发表日期	2013
ISSN	1000-0569
EISSN	2095-8927
起始页码	2695
结束页码	2708
卷号	29 期号:8
英文摘要	The Beilike basalt, covering an area of about 400km(2), consists of three levels of lava platforms at different elevations, and the age of each lava platform is 2.31 similar to 2. 41Ma.1. 56 similar to 1.61Ma.0. 51 similar to 0. 61Ma. The basalt which can be divided into quartz tholeiite and olivine tholeiite has an excessive nature of the characteristics, all being derived from the garnet peridotite source region. Based on the geochemistry characteristics, there does not exist the evolutionary relationship between the olive tholeiite and quartz tholeiite. They are interpreted to be resulted probably from the varying degrees of the garnet peridotite source region and the depth of partial melting. Both olive tholeiite and quartz tholeiite were affected by crustal contamination, but the latter is more obviously. Tectonically, both Beilike and Chifeng lie on the the southern margin of the Xing' an-Mongolia Orogen Belt, compared with the northern margin of North China Craton, they have a similar magma source and the lithospheric mantle thermal state, but different enrichment lithospheric mantle types, namely, the former displays a DMM-EM II array different from the latter, it may be related to different ages and tectonic settings of the lithospheric mantle. Based on the asthenosphere-lithospheric mantle interaction model, lithospheric thinning phenomenon in North China is not confined to the craton, instead in northwest craton, and even the south margins of Xing' an-Mongolia Orogen Belt experienced lithospheric thinning too. They just have different time and degree of the lithospheric thinning process.
关键词	NORTH CHINA CRATON SPINEL PERIDOTITE XENOLITHS JINING CENOZOIC-BASALTS SINO-KOREAN CRATON VOLCANIC-ROCKS EASTERN CHINA TRACE-ELEMENT LITHOSPHERIC MANTLE CHEMICAL CLASSIFICATION ULTRAMAFIC XENOLITHS
英文关键词	Beilike, Inner Mongolia; Cenozoic; Petrogenesis of the tholeiite; Evolution of the subcontinental lithospheric mantle
语种	英语
WOS研究方向	Geology
WOS类目	Geology
WOS记录号	WOS:000323689100007
来源期刊	ACTA PETROLOGICA SINICA
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258132
推荐引用方式 GB/T 7714	Chen ShengSheng,Fan QiCheng,Zhao YongWei,et al. Geochemical characteristics of basalts in Beinke area and its geological significance, Inner Mongolia[J]. 中国科学院青藏高原研究所,2013,29(8).
APA	Chen ShengSheng,Fan QiCheng,Zhao YongWei,&Shi RenDeng.(2013).Geochemical characteristics of basalts in Beinke area and its geological significance, Inner Mongolia.ACTA PETROLOGICA SINICA,29(8).
MLA	Chen ShengSheng,et al."Geochemical characteristics of basalts in Beinke area and its geological significance, Inner Mongolia".ACTA PETROLOGICA SINICA 29.8(2013).