Magnetotelluric measurements in the Rondane region, southern Norway during two field campaigns (2017- 2018)

Abstract

New magnetotelluric (MT) data were acquired in the southern Scandinavian mountains to study the crustal structure of the Late Caledonian Gudbrandsdalen Anticline including the Atnsjø tectonic window and the adjacent Middle and Upper Allochthon. The project focuses on investigating the structure of the upper Precambrian basement in the area related to the Western Gneiss Region (WGR), surrounded by the Caledonian nappes. One problem we are addressing is the depth extension of the Devonian detachments related to the late Caledonian gravity collapse and their influence on the old passive continental margin beneath the Caledonian Orogen.