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Petroleum Geoscience; July 2003; v. 9; no. 3; p. 277-282; DOI: 10.1144/1354-079302-539
© 2003 Geological Society of London
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Original Article

Stratigraphic–structural interpretation and hydrocarbon potential of the Alasehir Graben, western Turkey

M. Yilmaz1 and K. Gelisli2

1 Turkish Petroleum Corporation (TPAO), 06520-Ankara, Turkey
2 Department of Geophysics, Karadeniz Technical University, 61080-Trabzon, Turkey (e-mail: gelisli@ktu.edu.tr)

Two different graben sets were developed in western Anatolia (Turkey) under the influence of Neogene extension. NE–SW orientated grabens formed during the Miocene and provided suitable environments for the deposition of lacustrine bituminous shales and fan delta sediments. Younger E–W orientated grabens formed during the Pliocene and locally intersected the older NE–SW grabens. Such intersecting graben areas are characterized by superimposed graben fills. The Alasehir Graben is an example of such a configuration within the E–W orientated Gediz Graben. The hydrocarbon potential and superimposed configuration of the Alasehir Graben were examined using seismic, gravity and magnetic data. Seismic data were interpreted in an interactive interpretation system, using additional physical parameters generated by calculating instantaneous attributes on time-migrated seismic sections, aiding determinations of lithology and seismic facies. The Alasehir Graben contains four sedimentary units developed under an extensional tectonic regime and is a superimposed graben containing possible traps as well as a high potential for hydrocarbon generation.

KEYWORDS: graben, superimpose, hydrocarbon, seismic attributes




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S. Sen and G. Seyitoglu
Magnetostratigraphy of early-middle Miocene deposits from east-west trending Alasehir and Buyuk Menderes grabens in western Turkey, and its tectonic implications
Geological Society, London, Special Publications, January 1, 2009; 311(1): 321 - 342.
[Abstract] [Full Text] [PDF]


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