Open Access

Source Rock Characteristics of Cretaceous Bituminous Shale and Effects of Redox Conditions (Adıyaman/Türkiye)

1 Batman Üniversitesi, Mühendislik-Mimarlık Fakültesi, Petrol ve Doğalgaz Mühendisliği Bölümü, Batman

Abstract

The study area is located 30 km northwest of Adıyaman province in Southeast Anatolia region of Türkiye. In the region, from the Cretaceous to the Neogene, geological units formed in different periods. Karababa and Karaboğaz Formations belong to the Cretaceous aged Mardin Group and Adıyaman Group respectively and represent our work examples. Analyzes were conducted to determine organic content and element contents on 30 samples collected from these formations. Total organic carbon content was determined to be between 1.04-7.09% for Karaboğaz Formation, 0.1-3.22% for Karababa Formation, and to have an immature-early mature and good oil resource rock potential according to the adhering pyrolysis analysis. The relationships between the Corg-S-Fe of the studied samples were generally found to be compatible with each other. This indicates that it provides the appropriate conditions for the preservation of organic matter in the depositional environment and that the environment is oxic-dysoxics. It was concluded that the samples examined with parameters such as C-S-Fe, Ni/Co, V/Cr and V/(V+Ni), U/Th, V/Sc, Th/ have depositional environment effects with variable redox conditions.

Keywords

How to Cite

KOCA, D. (2025). Source Rock Characteristics of Cretaceous Bituminous Shale and Effects of Redox Conditions (Adıyaman/Türkiye). MAS Journal of Applied Sciences, 10(4), 789–806. https://doi.org/10.5281/zenodo.17812809

References

📄 Algeo, T.J., Maynard, J.B., 2004. Trace-element behavior and redox facies in core shales of Upper Pennsylvanian Kansas-Type Cyclothems. Chemical Geology, 206(3): 289-318.
📄 Aliyev, S.A., Sarı, A., 2011. Biogeochemical properties of bituminous deposits in the Miocene Himmetoǧlu basin (Turkey). Geochemistry International, 49(2): 170-180.
📄 Arthur, M.A., Sageman, B.B., 1994. Marine black shales: depositional mechanisms and environments of ancient deposits. Annual Review of Earth and Planetary Sciences, 22(1): 499-551.
📄 Berner, R.A., Raiswell, R., 1983. Burial of organic carbon and pyrite sulfur in sediments over Phanerozoic times: a new theory. Geochimica et Cosmochimica Acta, 47(5): 855-862.
📄 Calvert, S.E., 1987. Oceanographic controls on the accumulation of organic matter in marine sediments. Geological Society, London, Special Publications, 26(1): 137-151.