Adding value to airborne geophysical surveys through advanced processing; an example from the Matheson area, Ontario
Mining Rocks! CIM Toronto 2005
Daniel Sattel, Peter Legget,
Over the last decade, the builders of airborne geophysical systems have been increasing both the complexity and volumes of data that such systems can acquire. The EM technique in particular has seen a burgeoning of data such that now a 'normal' time domain survey can deliver (at minimum) to the client over 200 separate pieces of data. Typically however, the standard products derived from such surveys by contractors utilizes only a faction of this data; the assumption being that the client will 'figure out' what might be the value in the additional data if they have the interest, time, and capability. This of course, seldom happens.
In the current study, a Spectrem 2000 EM and magnetic survey flown in the Matheson area of Ontario early 2000 under the auspices of Operation Treasure Hunt program has been re-processed and analyzed. In this study, the primary data acquired during the survey has been utilized to then derive input for various processing techniques such as time constant, conductivity depth analysis and conductor modeling. The outcomes of this exercise will be discussed, highlighting the benefits this exercise has had in producing a final set of interpretation outcomes for the study area.
Exploration, Geophysics, electromagnetics