International Geological Journal - Official Journal of the Carpathian-Balkan Geological Association

COUNTERCLOCKWISE ROTATIONS OF THE NEOGENE ROCKS IN THE EAST SLOVAK BASIN

Pages: 159 - 168

Authors: EMO MARTON, DIONYZ VASS, IGOR TUNYI

Abstract: Paleomagnetic investigation of sedimentary and volcanic rocks of the East Slovak Basin gave information about the counterclockwise (CCW) rotation of the Neogene units of Eggenburgian to Middle Sarmatian age. The Eggenburgian sediments (1 loc. 20 spec.) show about 80° CCW rotation, the zeolitized rhyolite tuffs of Lower Badenian age (2 loc. 19 spec.) show a 40°–60° CCW rotation, the rhyolithes (1 loc. 3 spec.) of Upper Badenian age about 50° CCW rotation, the sediments of Lower-Middle Sarmatian age (1 loc. 6 spec.) gave CCW rotation of about 20° and the youngest post-Sarmatian rhyolite (1 loc. 9 spec.) did not yield any rotation. The rotation was preceded by left lateral penetration of the Tissia units into the West- and East-Carpathian boundary zone.

Keywords: Western Carpathians, East Slovak Basin, Neogene sedimentary and volcanic rocks, paleomagnetism, counterclockwise rotation

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