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Diagenesis of Kuzgun Sandstones (Middle-Upper Miocene), Adana Basin, Lbrkey: Implications for Reservoir Heterogeneity
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The shallow marine Litho-Facies of Kuzgun Formation represented by porous reservoir facies is predominantly represented by the sandstones of Middle-Upper Miocene age. The sandstones consist of arkoses, arkosic wacke and quartz arenite forming the reservoir facies and their microporosity is associated mostly with clay minerals. The sandstone is in general Cross-Bedded having the characteristics of primary and secondary porosity. The impervious (Non-Reservoir) facies of the formation is represented by alternating layers of mudstone/sandstone exhibiting bioturbation characteristics. Calcite and feldspar are the most important mineral cements. Authigenic quartz, dolomite, kaolinite, illite, and mixed layer Smectite-Illite are present in minor to trace amounts. There is dominant primary porosity in the sandstones. Minor secondary porosity is attributable to dissolution of Pore-Filling calcite and framework feldspars.
Keywords
Diagenesis, Miocene, Sandstones, Depositional Environment, Adana Basin, Turkey.
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