Syn-sedimentary tectonic markings in the Oligocene Datça-Kale-Acı Göl basin, Western Anatolia

Year 2019, Volume: 160 Issue: 160, 1 - 20, 27.12.2019

Gülşen Elmas Gürol Seyitoğlu Nizamettin Kazancı Veysel Işık

https://doi.org/10.19111/bulletinofmre.478093

Cited By: 1

Abstract

In southwest Turkey,
the Oligocene sedimentary sequence is located on the Datça-Kale-Acı Göl basin
between the Menderes Massif and Lycian nappes. To understand the nature of this
basin is important for tectonic models that explain the exhumation of the
Menderes massif. In the northeast extension of this basin, the sedimentary
sequence is interpreted as alluvial fan, fan-delta, beach, marine input, inner
shelf carbonates and offshore deposits. The Oligocene Datça-Kale main breakaway
fault bounding the south eastern margin of the basin is represented by İnceler and
Acı Göl faults in the study area. The wedge geometry of the sequence thickening
towards the İnceler normal fault is an evidence of syn-tectonic deposition. The
northwest margin of the basin is controlled   
by two en-echelon faults. The sedimentary sequence has a wedge geometry
thickening towards  the normal fault and
at the same time its upper layers overlap the fault. As a result, the northeast
extension of the Datça-Kale-Acı Göl Oligocene basin is an elongated fjord like
depositional area containing the shallow marine environments controlled by normal
faults located in its southeast and northwest margins. It was demonstrated that
the southeast basin margin limited by the Datça- Kale main breakaway fault
performed dominant tectonic control. The similar kinematic indicators that is
used for the model explaining the exhumation of the Menderes massif by the
upward bending   of Datça-Kale main
breakaway fault are also observed in the northwest of the basin as top to the
north-northeast.

Keywords

Datça- Kale- Acı Göl basin, Datça- Kale main breakaway fault, Extension, Oligocene, Tectono-sedimentary

Thanks

This study constitutes a part of the PhD Thesis to be completed of the first author Gülşen Elmas, in the Graduate School of Natural and Applied Sciences, Ankara University and was supported by the Ankara University BAP (Scientific Research Project) (Project number: 13L4343006). Gülşen Elmas would like to thank Anıl Ardahanlıoğlu and Efe Demirci, members of the Ankara University Tectonics Research Group, who accompanied one part of the field studies. The authors would like to express their gratitude to Hasan Sözbilir and two other referees who have been benefited from their constructive contributions and criticism during the preparation of the article.

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