The Alberta Geological Survey (AGS) outsourced the geological interpretation of the 2022 and 2023 high-resolution aeromagnetic survey conducted by the Alberta Energy Regulator (AER) / AGS in southern Alberta. This interpretation focused on refining the location of known basement domains (e.g., Medicine Hat domain, Vulcan domain), distinguishing anomalies in the basement (e.g., granitoids, ductile structures), and identifying late brittle faults and dikes in the Western Canada Sedimentary Basin (WCSB). Although this report does not identify any mineral occurrences or potential mineral exploration targets, the information will allow for a better understanding of geological features that are linked to increased critical mineral potential.

All production of geophysical products and interpretation of data was conducted by Ronacher McKenzie Geoscience Inc. (RMG), as well as subcontractor Fathom Geophysics LLC, with oversight and approval by the AER and AGS. Using the 2022 and 2023 aeromagnetic data, RMG synthesized a selection of grid-based filter products to aid subsequent interpretation. Additionally, RMG commissioned Fathom Geophysics LLC to produce automatic structure and radial symmetry detection filters, and other geophysical products. By integrating this new information with existing geological data, the authors’ interpretation included modifications to basement domain boundaries, identification of a possible intrusion, delineation of some faults and astroblemes, and correlations to known stratigraphy and petroleum accumulations within the WCSB. Subsequently, a compilation map and report were produced by RMG to highlight all new geological interpretations in southern Alberta. RMG also included an array of new GIS and geophysical products in their deliverables.

This work was completed under the Mineral Grant provided by the Government of Alberta dated June 22, 2021.

NTS Keywords

Brem, A., Lopez, G.P., McGill, D. and McKenzie, J. (2024): Airborne geophysics data analysis and interpretation, southern Alberta; Alberta Energy Regulator / Alberta Geological Survey, AER/AGS Special Report 120, 106 p.