Author: Ali SARI, Derya KOCA, Şükrü KOÇ, Berna YAVUZ, D.Banu KORALAY
Publishing Date: 2008
Volume 23 Issue 4
In Late Jurassic which is a period that the global sea rising occurred in the world, important source rocks for oil beds had been occurred as a result of anoxic events. In Middle Taurus region Akkuyu formation which also is deposited during this period, consists of marine carbonates enriched in organic matter. While enough organic matter is % 0.3 for source rock potential of marine limestones, value average of Akkuyu formation is 1.92 that is more than 6.4 times. In this study an obvious relation was determined between organic matter enrichment and element, whereas there is no direct relation between elements enrichments and lithology of the rock. U, Ba, Cu, Ni, Cr, As, V, Zn, Sb, Co, Mo and Cd are accumulated in carbonates rocks enriched in organic matter of Upper Jurassic Akkuyu Formation more than in shale samples enriched in organic matter. For example, Cd is accumulated 14 times in comparison with the Black Sea sapropels; 3 times for Co to Peru Margin samples; 7.22 times for Zn to Namibian shelf black shale, 3.89 to Black Sea sapropels; 2.11 times for V to Namibian shelf black shale; 3.47 times for Cr to Black Sea sapropels; 2.81 times for Ni to Namibian shelf black shale; 2.06 times for U to Cenomanian-Turonian black shale.
Key Words: Akkuyu Formation; Middle Taurus; Trace element; Organic matter; Element source.