Geoscience BC Report 2016-09

Processing and Inversion of SkyTEM data
by Aarhus Geophysics APS

Report Description
Following the release of new airborne electromagnetic data in northeast BC (Geoscience BC Report 2016-03: SkyTEM Survey: British Columbia, Canada; Data Report), Aarhus Geophysics was contracted to complete an inversion and qualitative interpretation of the data. The results are divided into ten files for download: two for each of the five main inversion blocks (Main, Charlie Lake, Doig, Conoco and Sikanni).

From a geophysical standpoint, the main results of this study include: spatial variability of the resistivity models reflecting the expected variance, both near surface and at depth; excellent fit between measured and modelled data, independent of geology or flight lines; seamless models despite data were acquired under varying conditions and over a period of several weeks; depth of investigation exceeding, in places, 300 m; effective removal of potential canopy effects; good correlation with depth to bedrock inferred from boreholes.

The derived qualitative geological interpretation highlights include: differentiation of different facies within the glacial cover, confirmation of several near surface resistive features associated to paleovalleys and/or areas of thick Quaternary cover identified by previous studies of borehole data, and the presence of other near surface resistive features that could be of hydrogeological relevance.

The Peace Project is a collaborative effort involving the Ministry of Forests, Lands and Natural Resource Operations, the Ministry of Environment, the BC Oil and Gas Commission, the Ministry of Natural Gas Development, Progress Energy Canada Ltd., ConocoPhillips Canada, Northern Development Initiative Trust, and the BC Oil & Gas Research and Innovation Society, with additional support from the Peace River Regional District and the Canadian Association of Petroleum Producers.

Report Components
Warning: file size is very large. If you have trouble downloading the files, please contact Geoscience BC.

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