Airborne Gravity 2010 - Geoscience Australia

Airborne Gravity 2010
These results can also be used as an input into various statistical methods for the identification of
favourable areas (e.g., Barnett and Williams, 2007). For example, the extensive geochemical, mineral
occurrence, and geology data could be investigated jointly with these results in a weights-of-evidence
scheme.
(a)
Figure 8. (a) Cross-plot of anomalous density and susceptibility showing ranges that define
classes used to subset the inversion results. (b) Map view of susceptibility and density classes.
This is one plan slice through the 3D model. Grid lines mark out 100 km squares.
Conclusions and Summary
The regional exploration data acquired in British Columbia for Geoscience BC are an important new
data resource for mineral exploration. The airborne gravity data have been shown to be a particularly
valuable dataset. Inversion processing and integration with other geoscience data types allows users
to work with the data in a geologic context, and exploit the information that is present in the gravity
data. After completing an initial phase of data acquisition in 2007 and assessing the results, a decision
was made to acquire additional airborne data in 2008 and 2009. These data have been released. The
inversion processing is presently being carried out and should be released by the end of 2010.
Acknowledgments
The authors thank the organizers of the Airborne Gravity 2010 Workshop for the opportunity to present
these results, and the Geoscience BC team for their financial support and encouragement.
References
Aeroquest Limited, 2009, Report on a Helicopter-Borne AeroTEM System Electromagnetic & Magnetic
Survey - Aeroquest Job # 08130 - Quest West, Central B.C., Canada, for Geoscience B.C.:
Aeroquest Limited Report, January 2009. (http://www.geosciencebc.com/i/project_data/QUEST-
West/Electromagentics/GBCReport2009-6_Quest_West_Report.pdf, accessed 5 August 2010)
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(b)