Correlation of Quaternary Sediments and Tectonic Activity of the Eastern Part of the Drava River Depression

The Holocene, Upper Pleistocene and Middle Pleistocene sediments in the eastern part of the Drava depression the substratum of which is determined by the conditional EK marker Q\u27, are composed in the lower part mainly of silts and clays and in the upper part of sands. The thickest parts are about 400m. The composition of the transparent heavy minerals and the result of the paleontological treatment show that the sedimentation was in the lake or swamp with the origin of detritus from the metamorphic rocks and smaller quantity of older clastic sediments.The collected data show the quaternary tectonic activity after the sedimentation of the marker horizon Q\u27. In the area between the boundary faults of the valley, the faults of the system E.N.E. - W.S.W. (N.E. - S.W.) influenced directly the sedimentation and the folding . They were the consequence of the regional movements and stress strain behaviour of rock masses, which built the structures of the valley.As a result, the horizontal component of the left wing movement is visible along the diagonal system of faults. The vertical movements have also been determined. The greatest amplitudes were along the boundary South fault of the Drava valley, up to 350 m for the period of Middle and Upper Pleistocene, or 90 m for Upper Pleistocene only