High Resolution Seismic Reflection Methods - A Critical Tool for Defining the Sequential Stratigraphy of Glacial Sedimentary Basins

High resolution seismic reflection surveying, on both land and over water, is an important geophysical tool used to map and characterise sedimentary sequences present within glacial basins. Sedimentary architecture in many basins reveals disconformable reflectors inferred to be erosional unconformities. This technique is particularly amenable to mapping unconformable interfaces and 3D elements. It appears that glacial and meltwater processes are important formative agents in most ’glacial’ depositional models. Two Canadian examples - one on land near Ottawa and one over Lake Simcoe, near Toronto – provide insight into the potential of this method to model groundwater flow within the fill of glacial basins.