This map of the first vertical derivative of the Bouger gravity anomaly in the Patterson Lake area of the Athabasca Basin in Alberta and Saskatchewan is a joint publication with the Geological Survey of Canada (GSC Open File 8534) and the Saskatchewan Geological Survey (SGS Open File Report 2019-2). This is one of two maps derived from data acquired during an airborne gravity survey carried out by Sander Geophysics Limited in Alberta and Saskatchewan from September 16, 2018 to October 9, 2018. 

A summary of data acquisition and processing information is provided in the explanatory notes. More detailed information and the digital data used to produce this map are available at

Boulanger, O., Kiss, F. and Tschirhart, V., 2019. First Vertical Derivative of the Bouguer Gravity Anomaly, Airborne Gravity Survey of the Patterson Lake Area, Athabasca Basin, Alberta and Saskatchewan, Parts of NTS 74-E, F, K and L; Geological Survey of Canada, Open File 8534; Alberta Energy Regulator / Alberta Geological Survey, AER/AGS Map 592; Saskatchewan Geological Survey, Open File Report 2019-2; Scale 1:250 000.