Images of intraplate volcanism

The upper crustal structure below Tariat volcanic zone, Mongolia, imaged with magnetotellurics

Abstract (2018)

Authors

M.J. Comeau University of Münster
Michael Becken University of Münster
Johannes Käufl ETH Zürich
Alexey Kuvshinov ETH Zürich
Sodnomsambuu Demberel Mongolian Academy of Sciences
Affiliation
External organisation
More Info
expand_more

Published Date

2018

Language

English

Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Affiliation

External organisation

Abstract

West-central Mongolia is characterized by the Hangai Dome, and intra-continental plateau, and by dispersed, low-volume, intraplate, basaltic volcanism. The results of a recent broadband magnetotelluric study across the young volcanic zones of Tariat and Chuluut are presented. The magnetotelluric data are used to generate high-resolution electrical resistivity models of the crust, and, in combination with petrological data, can give insights into the structure of this region.

Thin, vertically elongated features imaged in the upper crust may represent hydrothermal alteration from ancient and transient conduits of hot magma. These anomalous features are spatially associated with the surface expressions of volcanism (volcanic cones and calderas) and modern-day hydrothermal activity (hot springs).