Gravity interpretation of bedrock topography: the case of the Oak Ridges Moraine, southern Ontario, Canada

Gravity data collected by the Geological Survey of Canada (GSC) over the Oak Ridges Moraine, southern Ontario, Canada, are processed and interpreted to obtain images of bedrock topography. The moraine has been the subject of a regional hydrogeological study conducted by the GSC to determine the geological framework and to study groundwater flow in the Greater Toronto area.Upward continuation is used to extract a residual gravity anomaly …