Author: Ümran PEKUZ
Publishing Date: 2007
Volume 22 Issue 1-2
The main ophiolite nappes emplacement and overthrust events in the SE-Aegean region resulted the regional uplifting during the Oligocene period. The Oligocene molasse-type inter montane basins developed generally at the southern and eastern part of the uplifting mountain belts within the SE-Aegean district.
The molasse-type Oligocene sediments in the northern part of Denizli and Honaz Dağ region were described as Çaykavuştu formation by the earlier workers. The thickness of these unit reaches up to 1200 m. The Oligocene Çaykavuştu formation rests concordantly on the Eocene turbiditic sediments. On the other hand, the allocthonous and para-autochthonous Mesozoic carbonate rocks of the Honaz Dağ masif overthrusts on the Çaykavuştu sedimentary sequence.
The Çaykavuştu formation in the eastern of Denizli consists dominantly of medium to poor-sorted alluvial-fan and fluvial clastic sediments which are derived from Honaz Dağ region. Locally, mudy and blocky debris-flow intercalations and the coarsening-upward sedimentary cycles occurred in the Oligocene sequence. The sedimentary cycles within the Çaykavuştu sequence related with regional thrusting tectonism. Each coarsening-upward cycles indicate the main regional uplifting and erosional phases during the Oligocene period.
Key Words: Honazdağı; Oligocene; Molasse; Clastic sediment.