Exploration of a magnetite deposit buried under thick and conductive sediments with multiple-source CSEM

Linbo Zhang; Guoqiang Xue; Muhammad Younis Khan; Weiying Chen; Sixu Han; Wen Chen

doi:10.1016/j.jappgeo.2020.104112

Exploration of a magnetite deposit buried under thick and conductive sediments with multiple-source CSEM

Linbo Zhang^*, Guoqiang Xue, Muhammad Younis Khan, Weiying Chen, Sixu Han, Wen Chen

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

The North China Craton (NCC) hosts abundant mineral resources, making it economically an important Precambrian block in China. The thick conductive loess strata in NCC presents a great challenge for successful application of controlled-source electromagnetic method (CSEM) by masking the deeper targets due to thick loess strata of conductive nature. In this work, we proposed a multiple-source CSEM method that addresses these weaknesses by using multiple-sources with inline and broadside configurations. The short offset was adopted to increase the S/N. Joint inversion of inline and broadside sources datasets enhance the detection accuracy. Based on an indirect detection strategy and the known ore-forming information, a deeply seated ore body at 1157 m was delineated.

Original language	English
Article number	104112
Journal	Journal of Applied Geophysics
Volume	180
DOIs	https://doi.org/10.1016/j.jappgeo.2020.104112
Publication status	Published - Sept 2020
Externally published	Yes

Keywords

Conductive overburden
Land CSEM magnetite deposit
Multiple-source joint inversion

ASJC Scopus subject areas

Geophysics

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10.1016/j.jappgeo.2020.104112

Cite this

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title = "Exploration of a magnetite deposit buried under thick and conductive sediments with multiple-source CSEM",

abstract = "The North China Craton (NCC) hosts abundant mineral resources, making it economically an important Precambrian block in China. The thick conductive loess strata in NCC presents a great challenge for successful application of controlled-source electromagnetic method (CSEM) by masking the deeper targets due to thick loess strata of conductive nature. In this work, we proposed a multiple-source CSEM method that addresses these weaknesses by using multiple-sources with inline and broadside configurations. The short offset was adopted to increase the S/N. Joint inversion of inline and broadside sources datasets enhance the detection accuracy. Based on an indirect detection strategy and the known ore-forming information, a deeply seated ore body at 1157 m was delineated.",

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T1 - Exploration of a magnetite deposit buried under thick and conductive sediments with multiple-source CSEM

AU - Zhang, Linbo

AU - Xue, Guoqiang

AU - Khan, Muhammad Younis

AU - Chen, Weiying

AU - Han, Sixu

AU - Chen, Wen

PY - 2020/9

Y1 - 2020/9

N2 - The North China Craton (NCC) hosts abundant mineral resources, making it economically an important Precambrian block in China. The thick conductive loess strata in NCC presents a great challenge for successful application of controlled-source electromagnetic method (CSEM) by masking the deeper targets due to thick loess strata of conductive nature. In this work, we proposed a multiple-source CSEM method that addresses these weaknesses by using multiple-sources with inline and broadside configurations. The short offset was adopted to increase the S/N. Joint inversion of inline and broadside sources datasets enhance the detection accuracy. Based on an indirect detection strategy and the known ore-forming information, a deeply seated ore body at 1157 m was delineated.

AB - The North China Craton (NCC) hosts abundant mineral resources, making it economically an important Precambrian block in China. The thick conductive loess strata in NCC presents a great challenge for successful application of controlled-source electromagnetic method (CSEM) by masking the deeper targets due to thick loess strata of conductive nature. In this work, we proposed a multiple-source CSEM method that addresses these weaknesses by using multiple-sources with inline and broadside configurations. The short offset was adopted to increase the S/N. Joint inversion of inline and broadside sources datasets enhance the detection accuracy. Based on an indirect detection strategy and the known ore-forming information, a deeply seated ore body at 1157 m was delineated.

KW - Conductive overburden

KW - Land CSEM magnetite deposit

KW - Multiple-source joint inversion

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Exploration of a magnetite deposit buried under thick and conductive sediments with multiple-source CSEM

Abstract

Keywords

ASJC Scopus subject areas

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