iMAGE-CREATE Seminar: Mapping structural complexity from geophysics and field measurements: A case study from greenstone belts in the Superior Province, Canada
Rebecca Montison (Laurentian University, University of Western Australia) will present her research on Monday, the 7th of June at 1 pm EDT.
Structural complexity is a crucial indicator for several mineral deposit types as it marks fluid pathways and traps; however, it is frequently mapped using interpreted datasets rather than unbiased data-driven techniques. A new method to map structural complexity using fisher statistics is applied to Archean greenstone belts near Dryden and Timmins in the Superior Province, Ontario, Canada. Bedding measurements and autodetected aeromagnetic lineaments are used as inputs to test if structural complexity can be used to refine and add confidence to existing geological interpretations and as an indicator of orogenic gold mineralization. Gold deposits are found <1700 m from low (< µ – 1σ) and < 1500 m from high circular variance anomalies (> µ + 1σ). Additionally, gold grade of large deposits increases with proximity to high variance anomalies. When paired with expert knowledge, statistical techniques such as this will increase repeatability and make exploration more rigorous.
Please register with Prof. Melissa Anderson to attend the Seminar!