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    Öğe
    Mature petroleum hydrocarbons contamination in surface and subsurface waters of Kızılırmak Graben (Central Anatolia, Turkey): Geochemical evidence for a working petroleum system associated with a possible salt diapir
    (Murat Yakar, 2022) Ozdemir, Adil; Palabiyik, Yildiray; Karataş, Atilla; Şahinoğlu, Alperen
    Salt formations exist in Kızılırmak Graben (Central Anatolia, Turkey), which consists of volcano-sedimentary units, and it was stated in previous studies that these formations have a diapiric structure. The adjacent basin, Ayhan Basin, contains bituminous shale and operated coal deposits. For this reason, in this study, it is aimed to investigate the oil and gas potential of the Kızılırmak Graben by conducting TPH (Total Petroleum Hydrocarbons) analysis on the samples taken from natural cold-water resources by making use of the thought that hydrocarbon generation may come into existence from those units in the Ayhan basin. As a consequence of the analyses performed, hydrocarbons have been brought into the open in all the water samples. The organic geochemical methods have been used to find out the source of hydrocarbons determined in the water resources. The disclosed n-alkane hydrocarbons are the mature petroleum hydrocarbons derived from peat/coal type organic matter (Type III kerogen, gas-prone). These mature hydrocarbon-rich waters can be regarded as evidence for the availability of a working hydrocarbon system associated with possible salt diapir identified by using gravity and magnetic data obtained from the investigation area. © Author(s) 2022.
  • [ X ]
    Öğe
    Oil and gas exploration in Seferihisar Uplift (Western Turkey) containing an operable-size gold deposit: Geochemical evidence for the presence of a working petroleum system
    (Springer Heidelberg, 2020) Ozdemir, Adil; Karatas, Atilla; Palabiyik, Yildiray; Yasar, Ergul; Şahinoğlu, Alperen
    In recent studies, the links between hydrocarbon accumulations and gold mineralizations have been examined. According to the results obtained from these studies, it has been reported that gold and hydrocarbons are carried and deposited by the same hydrothermal fluids. In the Seferihisar Uplift, the Efemcukuru Gold Operation possesses the largest proven gold reserves of Turkey. For this reason, in this study, it is aimed to investigate the oil and gas potential of the Seferihisar Uplift by conducting total petroleum hydrocarbons analyses on the samples taken from the natural cold-water resources. As a result of the analyses conducted, hydrocarbons have been detected in all the water samples. Organic geochemical methods have been used to determine the source of hydrocarbons detected in the water resources. The n-alkane hydrocarbons found in the water samples are the mature petroleum hydrocarbons, which are the geochemical evidence for a working petroleum system in the study area. Due to the presence of mature hydrocarbon-rich waters, the main structure in a maximum of 765 m depth determined in the study area according to gravity and magnetic data has a significant hydrocarbon potential to become an oil and/or gas reservoir.