caa a22 4500 477064590 CHVBK 20180405111409.0 cr unu---uuuuu 170330e19960601xx s 000 0 eng 10.1007/BF02422235 doi (NATIONALLICENCE)springer-10.1007/BF02422235 New palaeomagnetic data from Central Iran and a Triassic palaeoreconstruction [Elektronische Daten] [H. Soffel, S. Schmidt, M. Davoudzadeh, C. Rolf] New pole positions for Triassic and Cretaceous times have been obtained from volcanic and sedimentary sequences in Central Iran. These new results confirm the general trend of the Apparent Polar Wander Path (APWP) of the Central-East-Iran microplate (CEIM) from the Triassic through the Tertiary as published by Soffel and Förster (1983, 1984). Two new palaeopoles for the Triassic of the CEIM have been obtained; limestones and tuffs from the Nakhlak region yield a mean direction of 094.0°/25.0°, N=12, k=4.1,α 95=24.7°, after bedding correction, corresponding to a palaeopole position of 310.8°E; 3.9°S, and volcanic rocks from the Sirjan regions yield a mean direction of 114.5°/35.1°, N=44, k=45.9,α 95=3.2° after bedding correction and a palaeopole position of 295.8°E; 10.3°N. Combining these with the two previously published results yields a new palaeopole position of 317.5°E; 12.7°N, for the Triassic of the CEIM, thus confirming that large counterclockwise rotations of the CEIM have occurred since the Triassic time. New results have also been obtained from Cretaceous limestones from the Saghand region of the CEIM. The mean direction of 340.7°/26.3°, N=33, k=44.3,α 95=3.8°, and the corresponding palaeopole position of 283.1°E; 64.4°N, is in agreement with previously determined Cretaceous palaeopole positions of the CEIM. Furthermore, results have also been obtained from Triassic dolomite, limestone, sandstone and siltstone from the Natanz region, which is located to the west of the CEIM. A total of 161 specimens from 44 cores taken at five sites gave a mean direction of the five sites at 033.3°/25.1°, N=5, k=69.0,α 95=9.3° and a palaeopole position of 167.2°E; 53.7°N. They pass the positive fold test of McElhinny (1964) on the level of 99% confidence. This pole position is in fairly good agreement with the mean Triassic pole position of the Turan Plate (149°E; 49°N). It indicates that the area of Natanz has not undergone the large counterclockwise rotation relative to the Turan plate since the Triassic, which has been shown for the CEIM. A Triassic palaeogeographic reconstruction of Iran, Arabia (Gondwana) and the Turan Plate (Eurasia) is also presented. Springer-Verlag GmbH & Co KG, 1996 Iran nationallicence palaeomagnetism nationallicence Triassic nationallicence Cretaceous nationallicence Central Iran nationallicence geotectonics nationallicence palaeoreconstruction nationallicence Soffel H. Institut für Allgemeine und Angewandte Geophysik, Universität München, Theresienstrasse 41, D-80333, München, Germany aut Schmidt S. Institut für Allgemeine und Angewandte Geophysik, Universität München, Theresienstrasse 41, D-80333, München, Germany aut Davoudzadeh M. Institut für Allgemeine und Angewandte Geologie, Universität München, Luisenstrasse 37, D-80333, München, Germany aut Rolf C. Niedersächsisches Landesamt für Bodenforschung, Aussenstelle Grubenhagen, OT Rotenkirchen, D-37574, Einbeck, Germany aut Geologische Rundschau Springer-Verlag 85/2(1996-06-01), 293-302 0016-7835 85:2<293 1996 85 531 https://doi.org/10.1007/BF02422235 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02422235 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Soffel H. Institut für Allgemeine und Angewandte Geophysik, Universität München, Theresienstrasse 41, D-80333, München, Germany aut NATIONALLICENCE 700 1- Schmidt S. Institut für Allgemeine und Angewandte Geophysik, Universität München, Theresienstrasse 41, D-80333, München, Germany aut NATIONALLICENCE 700 1- Davoudzadeh M. Institut für Allgemeine und Angewandte Geologie, Universität München, Luisenstrasse 37, D-80333, München, Germany aut NATIONALLICENCE 700 1- Rolf C. Niedersächsisches Landesamt für Bodenforschung, Aussenstelle Grubenhagen, OT Rotenkirchen, D-37574, Einbeck, Germany aut NATIONALLICENCE 773 0- Geologische Rundschau Springer-Verlag 85/2(1996-06-01), 293-302 0016-7835 85:2<293 1996 85 531 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer