Regional 3-D electrical resistivity model of Mongolia: Constraining lithospheric properties and architecture
Clicks: 3
ID: 328757
2026
Article Quality & Performance Metrics
Overall Quality
Not rated
Combines reader engagement with the AI quality analysis. This
article has not been analysed, so there is no overall score —
reader engagement is measured and shown alongside.
Reader Engagement
Emerging Content
0.6
/100
3 views
2 readers
AI Quality Assessment
Not analyzed
Readership in this journal
EmergingRanked #253 of 257 articles by views in geophysical journal international
Most read
Least read
Bar heights use a square-root scale. Only the 120 most-read articles are drawn; the journal has 257 in total.
Mint this article as an NFT
Not yet mintedCreate a permanent, verifiable on-chain record of this article on the Scimatic Network. The NFT is held in your Journament account, and you can withdraw it to your own wallet at any time.
5
SUSD
one-off · no wallet required
Abstract
Sumamry Electrical resistivity models derived from magnetotelluric (MT) measurements across the Khangai Dome, an intracontinental plateau in central Mongolia, have identified several intriguing features, including a locally thinned lithosphere and extended fluid-rich domains in the lower crust. However, due to the limited spatial coverage of these studies, whether those features extend beyond central Mongolia could not be assessed. This is an important question with major scientific implications for understanding the geodynamic evolution of the region. The surrounding areas also host significant mineral deposits and geothermal resources, whose origin and interpretation depend on the characterization of deep structures to be fully understood. In this study, we report on MT data from 378 new locations to the west, east, and north of the Khangai Dome, acquired between 2020 and 2023. A new 3-D electrical resistivity model of the region was derived using a combination of the new and previously acquired datasets. This new model covers an area of approximately 900 × 1250 km2, substantially expanding the spatial coverage compared to previous models. The key methodological novelty of this study is the implementation of a recently developed, scalable, and open-source 3-D inverse solver based on the integral equation approach and non-local parametrization. The 3-D model fits the observed data remarkably well, and the recovered features show good agreement with those from previously published models obtained with different solvers and subsets of the data. The model reveals an upper crustal dichotomy, with very high resistivity in the northern region and low resistivity in the southern region. The boundary between these regions follows the Main Mongolian Lineament in the central and eastern regions and the Ikh-Mongol arc system in the western region. In the lower crust, the resistivity is generally lower, and several long, laterally extended, very low-resistivity anomalies are observed. These anomalies extend westward from central Mongolia but are bounded to the east by a high-resistivity anomaly whose location coincides with the Mogod fault zone. The aforementioned features highlight the control of major tectonic boundaries on the electrical resistivity distribution. An upper-mantle low-resistivity anomaly below the Khangai Dome, previously interpreted as a locally thinned lithosphere with an upwelling asthenosphere, is imaged not only beneath central Mongolia but also, to some extent, in the western region. The model also provides new information on the structure of major features across central-western Mongolia, such as the extensive Bulnay fault. Taken together, these new constraints on lithospheric properties and architecture advance our understanding of the mechanisms that shaped the region and its subsequent evolution.
| Reference Key |
openalex_W7213440113
Use this key to autocite in the manuscript while using
SciMatic Manuscript Manager or Thesis Manager
|
|---|---|
| Authors | R Rigaud, M J Comeau, B Erdenechimeg, M Kruglyakov, A Kuvshinov, M Becken, J Plett, H Treppke, T Shoovdor, D Sodnomsambuu, O Chimed |
| Journal | geophysical journal international |
| Year | 2026 |
| DOI |
10.1093/gji/ggag377
|
| URL | |
| Keywords | Keywords not found |
Citations
No citations found. To add a citation, contact the admin at info@scimatic.org
Comments
No comments yet. Be the first to comment on this article.