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- W2330429536 abstract "PreviousNext No AccessSEG Technical Program Expanded Abstracts 2010Characterization of the Gamsberg deposit from electromagnetic modellingAuthors: Peter WalkerOckert TerblanchePeter WalkerGeophysical AlgorithmsSearch for more papers by this author and Ockert TerblancheAnglo American Ltd.Search for more papers by this authorhttps://doi.org/10.1190/1.3513180 SectionsSupplemental MaterialAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract The Gamsberg deposit, located in the Northern Cape province of South Africa, contains a major zinc resource in a complexly folded synclinal sequence that extends over several kilometers. The deposit can be treated, for the purposes of electromagnetic modelling, as a thin sheet in a resistive background medium. Because the sequence is large and folded, standard approaches to modelling using thin, plate‐like bodies have been limited to representing small regions of the conductor where the current systems can be approximated to flow locally and in a plane. As a result, late time behavior, where the currents can be controlled by the non‐planar shape of the conductor, has been difficult to characterize. However, recent use of SQUID sensors at Gamsberg has lowered noise levels and extended the delay times at which data can be reliably acquired over those previously acquired with coil sensors. By using a mesh‐based integral equation algorithm to model these data, the curved character of the conductor can be represented, resulting in improved understanding of the character of the conductor and the mineralized zones within it.Permalink: https://doi.org/10.1190/1.3513180FiguresReferencesRelatedDetails SEG Technical Program Expanded Abstracts 2010ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 2010 Pages: 4453 publication data© 2010 Copyright © 2010 Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished: 21 Oct 2010 CITATION INFORMATION Peter Walker and Ockert Terblanche, (2010), Characterization of the Gamsberg deposit from electromagnetic modelling, SEG Technical Program Expanded Abstracts : 1748-1752. https://doi.org/10.1190/1.3513180 Plain-Language Summary PDF DownloadLoading ..." @default.
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