|
|||||
|
|
From Tethys to Eastern Paratethys: Oligocene depositional environments, paleoecology and paleobiogeography of the Thrace Basin (NW Turkey) |
|
| Authors: | Ye?im ?slamo?lu Mathias Harzhauser Martin Gross Gonzalo Jiménez-Moreno Stjepan Coric Andreas Kroh Fred Rögl Jan van der Made |
| Institution: | 1. Geological Research Department, General Directorate of Mineral Research and Exploration, 06520, Balgat, Ankara, Turkey 2. Natural History Museum Vienna, Burgring 7, 1010, Vienna, Austria 3. Landesmuseum Joanneum, Raubergasse 10, 8010, Graz, Austria 4. Departamento de Estratigrafía y Paleontología, Facultad de Ciencias, Universidad de Granada, Avda. Fuente Nueva S/N 18002, Granada, Spain 5. Center for Environmental Science, University of New Mexico, Albuquerque, 86011, USA 6. Geologische Bundesanstalt, Neulinggasse 38, 1031, Vienna, Austria 7. Consejo Superior de Investigaciones Científicas, Museo Nacional de Ciencias Naturales, Madrid, Spain |
| Abstract: | The Oligocene depositional history of the Thrace Basin documents a unique paleogeographic position at a junction between the Western Tethys and the Eastern Paratethys. As part of the Tethys, shallow marine carbonate platforms prevailed during the Eocene. Subsequently, a three-staged process of isolation started with the Oligocene. During the Early Rupelian, the Thrace Basin was still part of the Western Tethys, indicated by typical Western Tethyan marine assemblages. The isolation from the Tethys during the Early Oligocene is reflected by oolite formation and endemic Eastern Paratethyan faunas of the Solenovian stage. The third phase reflects an increasing continentalisation of the Thrace Basin with widespread coastal swamps during the Late Solenovian. The mollusc assemblages are predominated by mangrove dwelling taxa and the mangrove plant Avicennia is recorded in the pollen spectra. The final continentalisation is indicated by the replacement of the coastal swamps by pure freshwater swamps and fluvial plains during the Late Oligocene (mammal zone MP 26). This paleogeographic affiliation of the Thrace Basin with the Eastern Paratethys after ~32 Ma contrasts all currently used reconstructions which treat the basin as embayment of the Eastern Mediterranean basin. |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ | |