  The transition towards carbon neutral transportation and energy sources
increases the global demand for mineral raw materials while easy-to-find
near-surface (\< 200 m) ore deposits are unlikely discovered in well-explored
areas such as Europe. In order to increase the mineral exploration success
rate, the project SEEMS DEEP (SEismic and ElectroMagnetic methodS for DEEP
mineral exploration) develops geophysical deep exploration workflow capable of
imaging the bedrock from the surface down to several kilometres depth. In this
paper, we present first results from ground electrical and electromagnetic
surveys conducted at the SEEM DEEP geological test site, namely the Koillismaa
Layered Intrusion Complex in north-eastern Finland. Here, a 1.7 km long hole
drilled by GTK intersected mafic-ultramafic rocks with anomalous electrical and
chargeability properties at ~1400 m depth, making it an interesting case study
to test the ability of such technologies for imaging resistivity and
chargeability contrasts at several kilometre depth.
