By Sandersen, P.B.E. & Kallesøe, A.J., 2021. GEUS Report 2021/36
This report describes the geological interpretations at four selected agricultural catchments from the Danish National Environmental Monitoring Program (LOOP) and two demo sites mapped as a part of the MapField Project. For each of the mapped areas, existing and newly acquired field data have been interpreted geologically in high detail. Mapping with the tTEM method (towed Transient Electro Magnetic method) has provided highly detailed data from the uppermost 50-70 m.
In the geological modelling we use the concept of ‘Geological Elements’ (GE’s), where the GE’s are defined as separate volumes of the subsurface that can be related to distinct parts of the geological history. Dividing the subsurface into GE’s has the advantage that it is only necessary to model the upper and the lower boundaries of GE’s consisting of multiple individual layers, resulting in a limited number of GE’s in the geological model. Based on the geological interpretations, input for subsequent statistical and hydrological modelling can be produced.