TECTONICS OF SULTANDAĞ AND ITS SURROUNDINGS

Year 1986, Volume: 107 Issue: 107, 114 - 114, 01.12.1986

Cavit Demirkol

Abstract

In the tectonic
evolution of Sultandağ and its surroundings, the compressional and tensional
phases seem to have taken place alternately. The Paleozoic aged basement rocks
were folded by the of Caledonian and post Caledonian phases. These phases
affacted the structure of the basement rocks to some considerable scale. From
the morphological extend of Sultandağ, it is apparant that the fold axes are in
the direction of northwest-southeast. However, in the western side of
Çay-Hoyran area these axes are in the direction of northeast-southwests: The
investigated area was probably quite stable during Upper Jurassic-Upper
Cretaceous, but it was increasingly affacted by the compressional stresses at
the end of Lutetian, and as a result, the Hoyran ophiolitic complex unit moved
over the older rocks by a tectonic contact. The investigation of the sediments
of Upper Miocene-Pliocene shows that the region has neotectonically developed
by compression. The Upper Miocene-Pliocene aged fluviatile-lacustrine and
terrestrial formations of Bağkonak, Göksöğüt and Yarıkkaya, unconformably
overlain the rock units that had previously existed. Although these units show
an upward lithology of conglomerate-sandstone and siltstone-argillaceous
limestones-limestone, they also show lateral and vertical transitions. The
folds, lying nearly in the direction of northwest-southwest, and reverse faults
were formed by a tectonic deformation. The sediment adjacent to the basement
rocks were strongly folded and also broken. The expla- nations given so far
seem to indicate that the area has once undergone a compression in the
eastnortheast-westsouthwest direction. Finally, it's possible to say that the
eastnortheast-westsouthwest directed compression regime, which looks effective
in the area, has taken places by the resistance of the Aegean plate to the
Anatolian plate during a westernly movement.

Keywords

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