Sonel, NurettinAyyıldız, Turhan2022-06-202022-06-202000http://hdl.handle.net/20.500.12575/82150The study area is situated within the central Anatolia and with infill of 10 km thick is the biggest depositional area. The Cretaceous to mid - Eocene time is characterized as marine, shallow marine, and continental sediments and mid - Eocene to recent is represented by continental elastics. The main purpose of this study is to determine geochemical and diagenetic properties of the late Paleocene marine sediments in the Tuz Golü basin. In the study area, the Paleocene units are widely outcropped to the northern portion of the Tuz Golü basin and, the units narrow to the east. The late Paleocene units are termed as Kirkkavak formation at the north and Karapınaryaylası formation at the northeast and east of the basin. The units consist of thick shale, thin to medium bedded turbiditic sandstone alternation, conglomerate, and volcanic rocks and their depositional environments are considered to be outer fan and basin plain sediments. Sandstone levels are composed of arkosic, lithic and calk - arenites. The lower and upper boundary of Kirkkavak Formation is conformably ovelain by Çaldağ and underlain by Eskipolath formations, and Karapınaryaylası formations; however, local basal unconformaties have been observed. Total Organic Carbon results show the thick bedded shale generally moderate source rock. However, in some cases, the unit shows weak to good source rock potential. Genetic potential values are within the weak source rock except two samples. Maturity values are marginally mature, however, immature to overmature values are also observed. Kerogen types are Type - III and / or Type - IV, and facies type comprise CD, D, and possibly C. Organic geochemical and petrographical results show that organic matter was altereted. In addition, high Phtalats and tricyclic Ca I hopaneC^ ratio results by GC-MS indicated that bacterial activity with organic matter. Organic and inorganic geochemical results show that organic matter was deposited in the marine environment with anoxic condition. The geochemical characterization of the bituminous sandstone levels within the northwest region indicate that residue oil yield the same source rock. Maturity and isotopic data show that residue oil was yield between Cretaceous and Tertiary boundary, possibly Tertiary marine source rock. Based upon organic geochemical study of the Paleocene shale at the Aktas-1 well is weak to moderate and Aksaray- 1 and Sultanham-1 wells are good source rock potential properties. Therefore, Aksaray and Sultanhani areas may have potential prospect for hydrocarbon exploration and Aktas area has slightly less prospect value. Porosity and permeability results of sandstone and conglomerate levels are very low. Therefore, these levels can not be considered as reservoir rocks. Reservoir properties were occupied with carbonate and iron oxide cementation, and quartz and leldspathic overgrowth, in addition to aulhigenic clays during diagenetic history. Joints and fissures of secondary porosity were also filled by carbonate and clay minerals. According to the organic geochemical study, it is proposed that late Paleocene units has hydrocarbon yield properties. It was also determined that residue oil generated torn the late Paleocene shale or / and marl rocks. Clastic facies can not be advanced as reservoir rocks for hydrocarbon exploration. However, it is proposed that the volcano - clastic which were drilled in the Karapınar wells should be tested. 2000, 241 pages Key Words: Tuz Gölü, Haymana, Bala, source rock, diagenes, Phtalats, Kirkkavak Formation, Karapınaryaylası Formation, organic geochemistry, hydrocarbontrJeoloji MühendisliğidoctoralThesis