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Geological Society, London, Special Publications; 1984; v. 17; p. 287-300;
DOI: 10.1144/GSL.SP.1984.017.01.21
© 1984 Geological Society of London

3. Neotethys: Turkey

Miocene clastic sedimentation related to the emplacement of the Lycian Nappes and the Antalya Complex, S.W. Turkey

A. B. Hayward

British Petroleum plc, West Britannic House (a), Moor Lane, London EC 2, England
Grant Institute of Geology, University of Edinburgh, EH9 3JW, Scotland

The western Tauride Mountains of S.W. Turkey comprise a central relatively autochthonous carbonate platform unit, the Tauride autochthon bordered by two allochthonous units, the Lycian Nappes to the west and the Antalya Complex to the east. Sequences of Miocene clastic sediments up to 1000 m thick that were derived from both the allochthons document the timing and direction of their emplacement onto the carbonate platform.

Along the western margin of the Miocene basin intial emplacement of the Lycian Nappes, from the northwest, in the Lower Miocene, was coupled with rapid subsidence of the previously stable carbonate platform. The resulting basin was ca 170 km across. Fan-deltas were derived from the leading edge of the nappes and passed basinwards into a series of small submarine fans. At the same time rapid uplift of the central parts of the carbonate-platform, along the margin of the basin opposite the nappe pile, led to a thick wedge of carbonate-derived clastics being shed northwestwards into the basin. Varying sedimentation rates and migrating facies belts in the overlying Middle and Upper Miocene basin-fill document the progressive emplacement of the Lycian Nappes ca 100 km from the northwest over the basin margin.

Along the eastern margin of the basin, palaeocurrent analysis and downslope facies-transitions in the Miocene sediments show that the Antalya Complex was emplaced from the east but only advanced a short distance beyond the eastern margin of the basin.

The Lycian Nappes and the Antalya Complex approached the basin from opposite directions and so their respective ophiolite units must have originated in separate ocean basins on either side of the Bey Daglari and the Susuz Dag carbonate platform.





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[Abstract] [PDF]