Alkaline intrusives at the east foot of the Taihang-Da Hinggan Mountains: Chronology, Sr, Nd and Pb isotopic characteristics and their implications

	Alkaline intrusives at the east foot of the Taihang-Da Hinggan Mountains: Chronology, Sr, Nd and Pb isotopic characteristics and their implications
	Yan, GH ; Xu, BL ; Mu, BL ; Wang, GY ; Chang, ZS ; Chen, TL ; Zhao, YC ; Wang, XF ; Zhang, RH ; Qiao, GS
刊名	ACTA GEOLOGICA SINICA-ENGLISH EDITION
	2000
卷号	74 期号:4 页码:774-780
关键词	alkaline intrusives chronology Sr, Nd and Pb isotopes east foot of the Taihang-Da Hinggan Mountains
ISSN号	1000-9515
文献子类	Article
英文摘要	Based on the Rb-Sr isochron dating results, this paper suggests that the alkaline intrusive belt at the east foot of the Taihang-Da Hinggan Mountains were formed between 135 and 122 Ma. And the alkaline intrusives in the north and south sections of this belt have entirely different Sr, Nd and Pb isotopic characteristics, i.e., all the rocks in the south section have positive epsilon (Sr)(t) and negative epsilon (Nd)(t) values and all those in the north have the opposite values. On the epsilon (Sr)(t) versus epsilon (Nd)(t) correlation diagram, the samples from the south are concentrated along the enriched mantle evolution trend lines and nearby, while those from the north fall along the depleted mantle trend lines and nearby. On the Pb isotope composition diagram, most of the samples from the south section fall on the mantle Pb evolution line and nearby, while those from the north lie between the Pb evolution lines of the mantle and the orogenic belt. The above-stated isotopic characteristics not only indicate that the source rocks of the alkaline intrusives in the south section have a close connection to materials from the enriched mantle reservoir, while those in the north are related to materials from the depleted one, but also reveal that the upper mantle below the North China platform is enriched and that below the Inner Mongolia geosyncline is depleted.
WOS研究方向	Geology
语种	英语
出版者	GEOLOGICAL SOC CHINA
WOS记录号	WOS:000166691900005
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/76119]
专题	中国科学院地质与地球物理研究所
通讯作者	Yan, GH
作者单位	1.Peking Univ, Dept Geol, Beijing 100871, Peoples R China 2.Chinese Acad Sci, Inst Geol, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Yan, GH,Xu, BL,Mu, BL,et al. Alkaline intrusives at the east foot of the Taihang-Da Hinggan Mountains: Chronology, Sr, Nd and Pb isotopic characteristics and their implications[J]. ACTA GEOLOGICA SINICA-ENGLISH EDITION,2000,74(4):774-780.
APA	Yan, GH.,Xu, BL.,Mu, BL.,Wang, GY.,Chang, ZS.,...&Chu, ZY.(2000).Alkaline intrusives at the east foot of the Taihang-Da Hinggan Mountains: Chronology, Sr, Nd and Pb isotopic characteristics and their implications.ACTA GEOLOGICA SINICA-ENGLISH EDITION,74(4),774-780.
MLA	Yan, GH,et al."Alkaline intrusives at the east foot of the Taihang-Da Hinggan Mountains: Chronology, Sr, Nd and Pb isotopic characteristics and their implications".ACTA GEOLOGICA SINICA-ENGLISH EDITION 74.4(2000):774-780.