Determination of anisotropy of tills by means of azimuthal resistivity andconductivity measurements

Anisotropy of glacial tills in Lapland revealed with azimuthal galvanic (Te rrameter 300 C) resistivity and inductive (Geonics EM-31) electrical conduc tivity measurements, which were carried out at four test sites. It was foun d that the azimuthal electrical conductivity parallelled with the preferred orientation of the till fabric at the top of the soil sequences. The prese nt results indicate that azimuthal resistivity and conductivity are deposit ional in origon and are attributed to the former ice flow directions. Diffe rent coil orientations gave information from different depths and resistivi ty and conductivity anisotropy varied along with depth.