Organic Material and Trace Elements of Bituminous Rocks in the Ozanköy Field, Ankara, Turkey

Abstract

Bituminous rocks in the Ozankoy (Ankara) field are different from those of the Paleocene-Eocene hlengen and Giineytepe (Bolu) regions in metal enrichment levels. Organic carbon (Cow) content of organic material-rich rocks in the Ozankoy (Ankara) field is 3.6640.72% wt averaging 14.34%. The dominant organic materials are algaelamorphous accompanied by minor amount of herbaceous material (The dominant kerogen type is Type-I with a limited amount of 'Qpe-I1 kerogen.). The bituminous rocks in the Ozankoy field are enriched in heavy metals such as Ni, Mn, As and Cr. In comparison with the average enrichment values of elements, Ni, Mn, As and C r in bituminous shales of the Ozankoy field are as about 4.38, 14.93, 10.90 and 5.58 times as average values. The average concentrations of these heavy metals are also as high as 2 1 5~ lo", 8 2 8~ lo", 5 8 . 5 4~ lo", and 148x lod respectively. In addition, sorption properties of clay and organic materials are also important for metal enrichments in the bituminous shales.

Evaluation of source rock potential, matrix effect and applicability of gas oil ratio potential factor in Paleocene–Eocene bituminous shales of Çamalan Formation, Nallıhan – Turkey

“…1). Although in a limited area and with fewer samples, as well as geological setting studies, the geochemistry of bituminous shale of Çamalan Formation has been the subject of numerous prior studies (e.g., Sarı et al, 2012;Sarı and Aliyev, 2006;Aliyev and Sarı, 2007). The main goal of the present study is to re-characterize generation potential of bituminous shale in this region to enhance the accuracy of the existing data and -interpretations using: 1.…”