Abstract
Framework petrography and provenance studies on the Upper Cretaceous to Middle-Upper Eocene sandstones of the Ereğli-Ulukişla Basin in the Central Anatolian Province of Turkey indicate that the sediments are generally derived from recycled orogenic sources and fold-thrust belt fields. The total amount of clay matrix and calcite cement is about 25% of the rock composition. The average porosity values range from 1.96 (for Çiftehan formation) to 3.80 (for Hasangazi formation). Permeability values of less than 1 mD (0.11 mD for Çiftehan, 0.07 mD for Halkali, and 0.37 mD for Hasangazi samples) indicate that those sandstones display poor reservoir quality.
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