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Title: Geological and hydrogeochemical properties of geothermal systems in the southeastern region of Turkey
Authors: Baba, Alper
Şaroğlu, Fuat
Akkuş, I.
Özel, Nedret
Yeşilnacar, Mehmet İrfan
Nalbantçılar, Mahmut Tahir
Demir, Mustafa Muammer
Gökçen, Gülden
Arslan, Ş.
Dursun, N.
Uzelli, Taygun
Yazdani, Hamidreza
Keywords: GAP
Geothermal resources
Geothermal usage
Issue Date: Mar-2019
Publisher: Elsevier Ltd.
Source: Baba, A., Şaroğlu, F., Akkuş, I., Özel, N., Yeşilnacar, M. İ., Nalbantçılar, M. T., Demir, M. M., Gökçen, G., Arslan, Ş., Dursun, N., Uzelli, T., and Yazdani, H. (2019). Geological and hydrogeochemical properties of geothermal systems in the southeastern region of Turkey. Geothermics, 78, 255-271. doi:10.1016/j.geothermics.2018.12.010
Abstract: The Anatolia region is one of the most seismically active regions in the world. It has a considerably high level of geothermal energy potential thanks to its geological and tectonic settings. The Southeastern Anatolia Region (GAP) is located in the south of Bitlis-Zagros Suture Zone (BZSZ) which is in the Arabian foreland. During the neotectonic period, the folded structures have been developed under the influence of tectonic compression from the Upper Miocene in the GAP Region where it is closely related to active tectonics. These tectonic activities produce more geothermal resources. Few studies have been carried out in this region for geothermal energy. Limited portions of the geothermal resources have been used both for thermal tourism and greenhouses in the GAP region. The aim of this study is to determine geological, tectonic and hydrogeochemical properties of a geothermal system in the GAP Region. The result indicates that the surface temperatures of geothermal fluids are from 20 to 84.5 °C A large number of abandoned oil wells, whose temperature reaches 140 °C, are found in the region. Also, hydrogeochemical results show that deep circulated geothermal fluids are enriched with Na-Cl and shallow geothermal system fluids have Na−HCO 3 and Ca-SO 4 characters because of cold water mixing and water-rock interaction. Cold waters are generally of Ca-Mg−HCO 3 and Ca−HCO 3 type. Cation geothermometers were used for determining reservoir temperature of the geothermal resources in the region. The results show that the reservoir temperature of these geothermal resources ranges from 50 °C to 200 °C. The isotope data (oxygen-18, deuterium and tritium) suggests that geothermal fluid is formed by local recharge and deep circulation.
ISSN: 0375-6505
Appears in Collections:City and Regional Planning / Şehir ve Bölge Planlama
Civil Engineering / İnşaat Mühendisliği
Energy Systems Engineering / Enerji Sistemleri Mühendisliği
Materials Science and Engineering / Malzeme Bilimi ve Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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