The Western Black Sea Basin of Turkey contains 2220 m thick of the Carboniferous deltaic-fluvial sediments in Zonguldak, Amasra, Kurucasile and Azdavay areas (200 km long and 100 km wide). Lower level of the sediments (Alacaagzi Formation) occur 600 m thick prodeltaic shale and sandstone with some thin coals seams. Middle level (the Kozlu Formation) and upper level (the Karadon Formation) consist of delta front and delta top -fluvial conglomerate, sandstone, mudstone-shale and coal. The middle and upper levels comprise 33 m thick of coal as 0.10 - 3.5 m thick seems.

Analysis of 30 shale and coal samples taken from the Alacaagzi Formation indicate that TOC contents of the shales and coals are ranging from 0.72 to 20.36% and from 46.51 to 71.52% respectively. Maturity of the shales and coals are varying from mature to late mature because Tmax values are ranging from 437 to 457 °C. Organic matter type of the formation is type II and III. Whole rock XRD data suggest that mineralogical properties of this formation are suitable for shale gas production because the shales contain high quartz and carbonate and low clay. Thus, the Alacaagzi Formation has good to excellent shale gas potential.

URTeC 1581654

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