Gravity measurements applied to the mapping of sediment thickness and bedrock morphology in Orkdalen, Orkdal Municipality, Sør-Trøndelag

Abstract

This report presents geophysical interpretation results of gravity data as part of a project entitled KARMA-3D. The main goal of the project is to perform three dimensional mapping characterization of Quaternary sediments in order to make the results more comprehensible to non geoscientists such as state officials and engineers. In this sense, gravity prospecting is one of the best techniques to construct density modeling and calculate sediment depths to bedrock due to its low cost compared to other methods and the fact that it can be easily implemented in urban areas. This is exactly the case with our study area which is situated in Orkdal municipality along the river Orkla and represents one of the most populated areas in Sør-Trøndelag county.