Determination of the coal-bearing zones and the alteration zones containing uranium ore by using two dimensional (2D) seismic reflection method in Thrace Basin

Trakya Havzasında kömürlü zonların ve uranyum cevheri içeren alterasyon zonlarının iki boyutlu (2B) sismik yansıma yöntemi kullanılarak belirlenmesi

Authors

Sinem AYKAÇ, Abdullah GÜRER, İmam ÇELİK, Batuğhan YIKMAZ, Erdoğan ERYILMAZ, Erdi APATAY, Sami Aytaç ÖZDEMİR, Sermet GÜNDÜZ, Tuğçe CAN, Esra AK, Erdener IZLADI, Salih ERDEN, Zeynep Rezzan ÖZERK, Recep GÜNEY, Esra Burcu KÖSE, Büşra Bihter DEMİRCİ

Keywords

Thrace Basin, Coal, Uranium, Seismic Reflection, Alteration Zone.

Abstract

It is aimed to reveal the basement topography, the coal-bearing levels, the alteration zones containing uranium ore, and the tectonic structure prevailing by using two dimensional (2D) seismic reflection method in the Thrace Paleogene-Neogene Basin. In this context, seismic data collected on the six profiles were interpreted by correlating with the data of 97 wells. In the seismic lines, respectively, the metamorphic basement-Eocene boundary, the top of the coal-bearing zone and the boundary of the Danişmen-Ergene formations were confirmed by using the borehole data. By evaluating seismic data, the coal propagation is modeled with three dimensional (3D) figures. Moreover, coal accumulation starts from the southwest of the field and continues towards the northeast, and it is supported by the results obtained from the borehole data. The presence of uranium ore in some of the alteration zones and borehole data indicated that all alteration zones determined should be inspected for uranium ore. In addition to normal and reverse faults, positive and negative flower structures formed in the strike-slip fault zones were determined, and lignite deposits were cut in the flank of these structures. Finally, it is recommended to carry out seismic studies before drilling, to investigate potential coal and uranium areas and to plan more seismic lines.

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