GEOMORPHIC ANALYSIS OF THE MØRE-TRØNDELAG FAULT COMPLEX IN SOUTHERN NORWAY
Study of the Møre-Trøndelag Fault Complex, a fault system that has a complex history and has undergone several periods of fault reactivation, may provide evidence for a tectonic uplift model as the mechanism responsible for the high relief. To address this model, we are using 3 techniques to investigate the high, rugged topography that has been maintained tens of millions of years after tectonic activity had concluded. These techniques comprise of tectonic geomorphology, low temperature thermochronology and structural geology to test the normal fault displacement gradient as well as constrain the timing of faulting within the Møre-Trøndelag Fault Complex. Tectonic geomorphic analysis will be completed through fluvial knickpoint analysis, a technique that has provided a great deal of data exhibiting a relationship between channel steepness and uplift. Knickpoint analysis will be compared with the geology and geomorphology of the area to tease out lithologically and glacially controlled knickpoints, in order to determine tectonic knickpoints. Multichronometer dating will be used on samples collected in the field to constrain the minimum timing of uplift, as there is currently not enough data to do so. Combination of these techniques will allow us to identify whether recent tectonic uplift is a valid model.