3D Modelling of Highly Conductive Massive Sulphide Bodies
Tuesday, September 13, 2016 | 4:30pm – 5:30pm Toronto/EDT
The Canadian Exploration Geophysical Society is pleased to invite you to their next KEGS talk. Geosoft will be the technology sponsor for the online portion of the event.
There has been a need in EM exploration for interpretation tools that can model a large earth volume with fine resolution and high conductivity contrasts. In response to this, a multigrid EM solution was developed for use in practical EM modelling of time domain EM data. This solution is an extension of multigrid methods to geophysical inductive EM problems. We illustrate the use of this tool by modelling UTEM data over the Voisey’s Bay Ovoid deposit. Starting with a conductivity model derived from published drill sections the methodology was successful in rendering both the early time large current channeling response generated by the host troctolite dyke and the very long late time decay of the highly conductive massive sulphide core.
Owen Fernley is a research geophysicist at Lamontagne Geophysics Ltd. in Kingston, Ontario where he works on methods specific to EM conductivity imaging and forward 3D modelling. He has an interest in web based interfaces and builds tools to visualize and interpret EM data in modern web browsers by connecting them to the technical software he helps to develop.