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Late Ordovician glaciation in southern Turkey |
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| Authors: | O Monod H Kozlu J-F Ghienne W T Dean Y Günay A Le Hérissé F Paris & M Robardet |
| Institution: | ISTO-CNRS, Universitéd'Orléans, 45067-Orléans, France;;TPAO, Exploration Group, M. Kemal Mah., 06520 Ankara, Turkey;;EOST, CNRS-CGS, 1 rue Blessig, 67084-Strasbourg, France;;Department of Geology, National Museum of Wales, Cardiff CF1 3NP, UK;;UBO, Dépt. Sc. de la Terre, 6 Av. Le Gorgeu, 29285 Brest, France;;UMR Géosciences, University Rennes I, 35042-Rennes, France |
| Abstract: | ABSTRACT We present a new survey of several Palaeozoic sections in both the Taurus range and the Border Folds that documents typical glacial features including a glacial pavement and striated dropstones (Halevikdere Formation) and demonstrates the former presence of an ice sheet in southern and south-eastern Turkey. Evidence for the late Ashgill (Hirnantian) age of this episode is provided by macro- and microfossils found within the glacial formation. The extension of ice-related deposits into the northernmost part of the Arabian Platform (Mardin region) implies a much wider distribution of the Ordovician ice sheet than was previously believed, and strongly suggests that southern Turkey lay close to Egypt during the Lower Palaeozoic. |
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