Abstract
Seismic, dc resistivity, transient electromagnetic (TEM) and audiofrequency magnetotelluric (AMT) methods have been jointly applied to the characterisation of a complex bedrock and overlying sedimentary rocks in an area covered by heterogeneous glacial deposits in midland England. Maps of TEM voltage response enabled a clear assessment of spatial variability and significant fracture-zones in the complex basement. The TEM sounding curves served for static shift correction of AMT data. Co-operative 2-D regularised inversion of the dc, AMT and seismic data led to concordant models of the subsurface and allowed improved determination of the basement-cover relations in the area of study.
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