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

Year 2023, Volume: 170 Issue: 170, 175 - 192, 17.04.2023

Sinem Aykaç Abdullah Gürer İmam Çelik Batuğhan Yıkmaz Erdoğan Eryılmaz Erdi Apatay Sami Aytaç Özdemir Sermet Gündüz Tuğce Can Esra Ak Erdener Izladı Salih Erden Zeynep Rezzan Özerk Recep Güney Esra Burcu Köse Büşra Bihter Demirci

https://doi.org/10.19111/bulletinofmre.1197260

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.

Keywords

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

Supporting Institution

The General Directorate of Mineral Research and Exploration (MTA)

Project Number

2018-33-13-17 and 2019-33-13-13

Thanks

The General Directorate of Mineral Research and Exploration (MTA) carried out this study within the Radioactive Raw Material Explorations of the Trakya Region project with the code numbers 2018-33-13-17 and 2019-33-13-13. We thank Project Head, Dr.Lütfi TAŞKIRAN, and the seismic team who contributed to the seismic studies. We also thank Dr. Orhan GÜRELİ for his contributions to the data processing and interpretation stages. We also thank Atila SEFÜNÇ for his contributions to seismic interpretation stages, Erdal ÖZCAN for solving systemic problems encountered in seismic data processing laboratories, and Orhan Cem ÖZERK, Ahmet Murat ALYAZ, Dr. Yavuz BEDİ and Dr. Halil YUSUFOĞLU for their guiding contributions to this article. And, we would like to thank Prof. Dr. Hakan KARSLI and Dr. Kemal Mert ÖNAL for their contribution to the development of the article.

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