Crust-mantle interactions beneath the Hangai and Gobi-Altai Mountains, Mongolia: Insights from an innovative magnetotelluric multi-scale survey and 3-D inversion
Dr. Johannes Käufl
AGW - KIT
Central Mongolia is a region of prominent intracontinental surface deformation and intraplate volcanism. Here, the northward compressional regime due to the India Asia collision transitions to an eastward extrusion. This transition zone is dominated by the Hangai Dome, a low relief, intracontinental plateau with widespread young Cenozoic volcanism. The observed surface deformation and volcanism cannot be explained solely by plate tectonics due to the large distances to tectonic plate boundaries. Instead, crust-mantle interactions are required, such as lithospheric thinning or asthenospheric flow and dynamic topography. However, the exact nature of these interactions remains enigmatic, partly due to the lack of detailed images of the subsurface in the region.