On geophysical background of superlarge deposits in the Chinese;continent

CORC > 中国地质调查局 > 中国地质调查局 > 中国地质科学院矿产资源研究所

	On geophysical background of superlarge deposits in the Chinese;continent
	Peng, C 3; Pei, RF ; Gao, R
刊名	ACTA GEOLOGICA SINICA-ENGLISH EDITION
	1999
卷号	73 期号:2 页码:193-200
关键词	Chinese continent superlarge deposits mantle lithosphere asthenosphere
ISSN号	1000-9515
英文摘要	Based on the study of tens of geophysical profiles (seismic, geothermal flow and magnetotelluric sounding profiles) and 3-D shear wave velocity structures of the Chinese continent and its neighbouring regions, this paper describes the 3-D crustal and upper mantle structures and discusses briefly the deep geophysical background of superlarge ore deposits in the Chinese continent. Superlarge deposits are usually very few in number, but they are distributed still in certain forms such as "point", "zone" and "area". Most of the large-, medium- and small-sized deposits occur near the margins of different tectonic units; while the superlarge endogenic polymetallic deposits occur mostly in thinned mantle lithosphere, uplifts of the asthenosphere (vertical low-velocity zones) and the transformation zones of lateral inhomogeneity (weak zones) in the upper mantle. The superlarge endogenic polymetallic deposits are almost unevenly distributed in three major ore zones in China, corresponding to the boundaries of inhomogeneous regions in the asthenosphere.;The authors argue that the lithospheric structure is to some extent in agreement with the geotectonic units, suggesting that the crust structure is influenced and restricted by the lithosphere, and that the crust and upper mantle both exhibit low-velocity nature. Therefore, vertical low-velocity zones of seismic waves are considered to be a favourable environment for endogenic polymetallic ore belts.
学科主题	地球物理勘探
WOS研究方向	Geology
语种	英语
出版者	GEOLOGICAL SOC CHINA
WOS记录号	WOS:000081467000007
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/37333]
专题	中国地质科学院矿产资源研究所
作者单位	1.CAGS, Inst Mineral Depositis, Beijing 100037, Peoples R China. 2.CAGS, Inst Geol, Beijing 100037, Peoples R China. 3.中国地质科学院矿产资源研究所
推荐引用方式 GB/T 7714	Peng, C,Pei, RF,Gao, R. On geophysical background of superlarge deposits in the Chinese;continent[J]. ACTA GEOLOGICA SINICA-ENGLISH EDITION,1999,73(2):193-200.
APA	Peng, C,Pei, RF,&Gao, R.(1999).On geophysical background of superlarge deposits in the Chinese;continent.ACTA GEOLOGICA SINICA-ENGLISH EDITION,73(2),193-200.
MLA	Peng, C,et al."On geophysical background of superlarge deposits in the Chinese;continent".ACTA GEOLOGICA SINICA-ENGLISH EDITION 73.2(1999):193-200.