Inversion of borehole magnetic data for prospecting deep-buried minerals in areas with near-surface magnetic distortions: a case study from the Daye iron-ore deposit in Hubei, central China

doi:10.3997/1873-0604.2017013

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 岩石圈演化国家重点实验室

	Inversion of borehole magnetic data for prospecting deep-buried minerals in areas with near-surface magnetic distortions: a case study from the Daye iron-ore deposit in Hubei, central China
	Liu, Shuang 1,2; Hu, Xiangyun 1; Cai, Jianchao 1; Li, Jianhui 1; Shan, Chunling 1; Wei, Wei 1; Han, Qi 1; Liu, Yajun 1
刊名	NEAR SURFACE GEOPHYSICS
	2017-06-01
卷号	15 期号:3 页码:298-310
ISSN号	1569-4445
DOI	10.3997/1873-0604.2017013
文献子类	Article
英文摘要	Significant near-surface magnetic distortions and weakly magnetic responses complicate the interpretation of surface magnetic data and compound difficulties associated with the prospecting of deepburied orebodies in old mines, such as the Daye iron-ore deposit. To address this problem, we used three-component borehole magnetic measurements from multiple drillholes to evaluate a magnetisation inversion approach that incorporates these data to obtain magnetisation intensity distributions. The magnetisation direction was estimated from rock and ore sample magnetic property measurements. Linear optimisation problem equations were solved using the pre-conditioned conjugate gradient algorithm. Tests on two-dimensional synthetic data returned favourable results. In the case study of the Daye iron-ore deposit, several concealed magnetite orebodies were discovered using three-component borehole magnetic measurements. Two-dimensional magnetisation inversion for borehole magnetic data indicated that magnetic sources were located at the contact zones between the diorite and marble rocks, as verified by other drillings. A three-component borehole magnetic survey shows advantages of moving away from shallow interferences and containing important additional information compared with a surface total field and provides a feasible approach to explore deep-buried and concealed minerals in areas with strong near-surface distortions.
WOS关键词	NONLINEAR CONJUGATE GRADIENTS ; MAGNETOTELLURIC INVERSION ; 3-D RESISTIVITY ; MAGNETOMETER ; ALGORITHM
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	EUROPEAN ASSOC GEOSCIENTISTS & ENGINEERS
WOS记录号	WOS:000408581700007
资助机构	National Natural Sciences Foundation of China(41604087 ; National Natural Sciences Foundation of China(41604087 ; Natural Sciences Foundation of Hubei Province(2016CFB122) ; Natural Sciences Foundation of Hubei Province(2016CFB122) ; China Postdoctoral Science Foundation(2016M590132) ; China Postdoctoral Science Foundation(2016M590132) ; Fundamental Research Funds for the Central Universities(CUG160609) ; Fundamental Research Funds for the Central Universities(CUG160609) ; 41630317) ; 41630317) ; National Natural Sciences Foundation of China(41604087 ; National Natural Sciences Foundation of China(41604087 ; Natural Sciences Foundation of Hubei Province(2016CFB122) ; Natural Sciences Foundation of Hubei Province(2016CFB122) ; China Postdoctoral Science Foundation(2016M590132) ; China Postdoctoral Science Foundation(2016M590132) ; Fundamental Research Funds for the Central Universities(CUG160609) ; Fundamental Research Funds for the Central Universities(CUG160609) ; 41630317) ; 41630317) ; National Natural Sciences Foundation of China(41604087 ; National Natural Sciences Foundation of China(41604087 ; Natural Sciences Foundation of Hubei Province(2016CFB122) ; Natural Sciences Foundation of Hubei Province(2016CFB122) ; China Postdoctoral Science Foundation(2016M590132) ; China Postdoctoral Science Foundation(2016M590132) ; Fundamental Research Funds for the Central Universities(CUG160609) ; Fundamental Research Funds for the Central Universities(CUG160609) ; 41630317) ; 41630317) ; National Natural Sciences Foundation of China(41604087 ; National Natural Sciences Foundation of China(41604087 ; Natural Sciences Foundation of Hubei Province(2016CFB122) ; Natural Sciences Foundation of Hubei Province(2016CFB122) ; China Postdoctoral Science Foundation(2016M590132) ; China Postdoctoral Science Foundation(2016M590132) ; Fundamental Research Funds for the Central Universities(CUG160609) ; Fundamental Research Funds for the Central Universities(CUG160609) ; 41630317) ; 41630317)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/61908]
专题	地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者	Hu, Xiangyun
作者单位	1.China Univ Geosci, Inst Geophys & Geomat, Hubei Subsurface Multiscale Imaging Key Lab, Wuhan 430074, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Liu, Shuang,Hu, Xiangyun,Cai, Jianchao,et al. Inversion of borehole magnetic data for prospecting deep-buried minerals in areas with near-surface magnetic distortions: a case study from the Daye iron-ore deposit in Hubei, central China[J]. NEAR SURFACE GEOPHYSICS,2017,15(3):298-310.
APA	Liu, Shuang.,Hu, Xiangyun.,Cai, Jianchao.,Li, Jianhui.,Shan, Chunling.,...&Liu, Yajun.(2017).Inversion of borehole magnetic data for prospecting deep-buried minerals in areas with near-surface magnetic distortions: a case study from the Daye iron-ore deposit in Hubei, central China.NEAR SURFACE GEOPHYSICS,15(3),298-310.
MLA	Liu, Shuang,et al."Inversion of borehole magnetic data for prospecting deep-buried minerals in areas with near-surface magnetic distortions: a case study from the Daye iron-ore deposit in Hubei, central China".NEAR SURFACE GEOPHYSICS 15.3(2017):298-310.