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NEW PALEOMAGNETIC RESULTS FROM THE MIDDLE MIOCENE (KARPATIAN AND BADENIAN) IN NORTHERN AUSTRIA
Published: Apr 2004
Pages: 199 - 206
Authors: ROBERT SCHOLGER, KARL STINGL
Abstract: We present new paleomagnetic results from the Middle Miocene in the Molasse Zone and the Vienna Basin system (Northern Vienna Basin, Wiener Neustadt Basin, Hainburg Swell, Mattersburg Bucht). The magnetic measurements were aimed at supporting stratigraphic age determinations where the polarity patterns of the primary magnetizations enabled a magnetostratigraphic zonation. Karpatian sediments in Laa/Thaya (brickyard) yielded a reverse polarity zone in the lower part (3.20 m) and a normal polarity zone in the upper part (6.10 m) of the sequence, which are assigned to Chrons C5Cr and C5Cn.2n. Three other sites in the Molasse Zone yielded single polarity results (two normal and one reverse polarity) for Badenian sediments. Only normal polarity was found in four sites of Badenian age from the Vienna Basin system. The new paleomagnetic results from Middle Miocene basin sediments (Karpatian and Badenian Stages) located North and East of the pre-Neogene Eastern Alpine Basement in Northern Austria show a general trend towards counterclockwise rotation of some 20 degrees with respect to the present North direction (according to 30° rotation with respect to the stable European continent). The observed rotation values and paleo-inclinations are in accordance with previous paleomagnetic results from Karpatian deposits in the Korneuburg Basin and other parts of the Alpine-Carpathian Foredeep.
Keywords: Miocene, Austria, Alpine-Carpathian Foredeep, Vienna Basin, magnetic stratigraphy
Download PDF documentVolume 55 no. 2 / April 2004
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