Application of 2D magnetotelluric methods in a geological complex area, Xinjiang, China

doi:10.1016/j.jappgeo.2011.06.007

	Application of 2D magnetotelluric methods in a geological complex area, Xinjiang, China
	Xiao Qibin 1; Cai Xinping 2; Liang Guanghe 2; Xu Xingwang 2; Zhang Baolin 2
刊名	JOURNAL OF APPLIED GEOPHYSICS
	2011-09-01
卷号	75 期号:1 页码:19-30
关键词	Magnetotellurics 2d Inversions Geological Complex Area Xinjiang
ISSN号	0926-9851
DOI	10.1016/j.jappgeo.2011.06.007
文献子类	Article
英文摘要	Magnetotelluric (MT) data along two profiles were collected in Tulargen Cu-Ni mining area, Xinjiang, China. The MT profiles, crossing the known ore-bearing magmatic body, are interpreted to have further understanding of the ore-bearing magmatic bodies' stretch and shape in depth, and to evaluate the prospect in the mining area. The values of phase sensitivity skewness indicate a contaminated two-dimensional (2D) structure (there exist local three-dimensional (3D) structures at shallow level) over 3D structures. G-B decomposition of the impedance tensors indicates the dominant geoelectrical strike in survey area is in East-West direction. To obtain reliable electrical structures, four different 2D inversion codes as REBOCC, NLCG, OCCAM, and ABIC are adopted, inversions of a synthetic 3D model using these codes indicate TM data are more suitable to invert the electrical structures along the profiles in Tulargen Cu-Ni mining area, while TE and TE + TM inversions can be used to verify the transverse variation of electrical structures at shallow level. The 2D electrical structures show high-resistivity basement covered by relatively low-resistivity strata in the mining area, the conductive anomalies are imbedded in the upper covers. The known ore-bearing magmatic body is coincided with the positions of two conductive anomalies in both profiles at shallow level; its extension at depth is deduced according to the shapes of the anomalies. Other conductive anomalies, isolated and existing only at limited depth as the known ore-bearing magmatic body, are presumed of good prospect. (C) 2011 Elsevier B.V. All rights reserved.
WOS关键词	IMPEDANCE TENSOR ; 2-DIMENSIONAL INTERPRETATION ; DIFFERENCE-EQUATIONS ; NEAR-SURFACE ; INVERSION ; DISTORTION ; DECOMPOSITION ; SMOOTH ; 3D ; EXPLORATION
WOS研究方向	Geology ; Mining & Mineral Processing
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000295346400003
资助机构	National Natural Science Foundation of China(40974042) ; National Natural Science Foundation of China(40974042) ; Foundation of Institute of Geology, China Earthquake Administration(DF-IGCEA-0608-2-16) ; Foundation of Institute of Geology, China Earthquake Administration(DF-IGCEA-0608-2-16) ; Institute of Geology and Geophysics, Chinese Academy of Sciences ; Institute of Geology and Geophysics, Chinese Academy of Sciences ; National Natural Science Foundation of China(40974042) ; National Natural Science Foundation of China(40974042) ; Foundation of Institute of Geology, China Earthquake Administration(DF-IGCEA-0608-2-16) ; Foundation of Institute of Geology, China Earthquake Administration(DF-IGCEA-0608-2-16) ; Institute of Geology and Geophysics, Chinese Academy of Sciences ; Institute of Geology and Geophysics, Chinese Academy of Sciences ; National Natural Science Foundation of China(40974042) ; National Natural Science Foundation of China(40974042) ; Foundation of Institute of Geology, China Earthquake Administration(DF-IGCEA-0608-2-16) ; Foundation of Institute of Geology, China Earthquake Administration(DF-IGCEA-0608-2-16) ; Institute of Geology and Geophysics, Chinese Academy of Sciences ; Institute of Geology and Geophysics, Chinese Academy of Sciences ; National Natural Science Foundation of China(40974042) ; National Natural Science Foundation of China(40974042) ; Foundation of Institute of Geology, China Earthquake Administration(DF-IGCEA-0608-2-16) ; Foundation of Institute of Geology, China Earthquake Administration(DF-IGCEA-0608-2-16) ; Institute of Geology and Geophysics, Chinese Academy of Sciences ; Institute of Geology and Geophysics, Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/73682]
专题	中国科学院地质与地球物理研究所
通讯作者	Xiao Qibin
作者单位	1.China Earthquake Adm, Inst Geol, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Xiao Qibin,Cai Xinping,Liang Guanghe,et al. Application of 2D magnetotelluric methods in a geological complex area, Xinjiang, China[J]. JOURNAL OF APPLIED GEOPHYSICS,2011,75(1):19-30.
APA	Xiao Qibin,Cai Xinping,Liang Guanghe,Xu Xingwang,&Zhang Baolin.(2011).Application of 2D magnetotelluric methods in a geological complex area, Xinjiang, China.JOURNAL OF APPLIED GEOPHYSICS,75(1),19-30.
MLA	Xiao Qibin,et al."Application of 2D magnetotelluric methods in a geological complex area, Xinjiang, China".JOURNAL OF APPLIED GEOPHYSICS 75.1(2011):19-30.