Imaging the Architecture of Mineral Systems and the Pathways of Ore-forming Fluids across Mongolia with Magnetotellurics

Abstract (2024)
Author(s)

Matthew J. Comeau (TU Delft - Applied Geophysics and Petrophysics)

Rafael Rigaud (ETH Zürich)

Erdenechimeg Batmagnai (Mongolian Academy of Sciences)

Shoovdor Tserendug (Mongolian Academy of Sciences)

Sodnomsambuu Demberel (Mongolian Academy of Sciences)

Michael Becken (Universität Münster)

Alexey V. Kuvshinov (ETH Zürich)

Research Group
Applied Geophysics and Petrophysics
DOI related publication
https://doi.org/10.1111/1755-6724.15225
More Info
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Publication Year
2024
Language
English
Research Group
Applied Geophysics and Petrophysics
Bibliographical Note
Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. @en
Issue number
S1
Volume number
98
Pages (from-to)
11–13
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Abstract

In the framework of a mineral system approach, a combination of components is required to develop a mineral system. This includes the whole-lithosphere architecture, which controls the transport of ore-forming fluids, and favorable tectonic and geodynamic processes, occurring at various spatial and temporal scales, that influence the genesis and evolution of ore-forming fluids (Huston et al., 2016; Groves et al., 2018; Davies et al., 2020). Knowledge of the deep structural framework can advance the understanding of the development of a mineral system and the emplacement of mineral deposits. Deep geophysical exploration carried out with this aim is increasingly important for targeting new ore deposits in unexplored and underexplored regions (Dentith et al., 2018; Dentith, 2019). We analyze data and electrical resistivity models generated from magnetotelluric measurements acquired across Mongolia, part of the Central Asian Orogenic Belt, as part of a regional array (Käufl et al., 2020; Rigaud et al., 2023a, b; Comeau et al., 2024; see Fig. 1) and focus on several metallogenic zones. These zones contain significant resources of copper and gold, as well as rare earth elements. We interpret the results, with the help of geological and geochemical data, in addition to seismic velocity data, and discuss fluid transport pathways and links to the surface expressions of mineral deposits.

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