Özet:

The Suluova Basin is an asymmetric depression area that primarily developed under the control of E-W directional faults. In this study, the geological, mineralogical and geochemical features of the units were examined and the lateral and vertical continuity of the units, mineral formations and paleoenvironmental conditions were investigated. For this aim, together with the field observations made, 5 deep drillings (between 206.5-870.4m) for coal exploration performed by Turkish Coal Enterprises (TKİ) in the region were used. Suluova basin consists of a very thick sedimentary sequence with subsidence due to tectonic effects and continuous clastic input. The units thickened towards the north with lateral and vertical facies changes due to the presence of tectonic movements. The presence of the Eocene sequence consisting of fluvio-lagoonal units at the bottom and a Quaternary sequence consisting of fluvial and lacustrine units towards the upper was determined. The sediments of the alluvial environment are generally composed of sandstone and mudstone containing conglomerate levels. Lacustrine units consist of intercalation of carbonated claystone, sandstone and mudstone. Fluvio-lagoonal units consist of mudstone, sandstone and channel fill conglomerate. The sedimentary sequence was deposited under semi-arid/arid climatic conditions. Clay minerals, feldspar, quartz, calcite, dolomite, aragonite, gypsum and pyrite were determined by XRD analysis. In the clay fraction XRD analysis, Ca-smectite, illite, chlorite and kaolinite were detected. When the results of the geochemical analysis are evaluated, it was determined that the rocks originate from the same origin and are commonly composed of the units with acidic-intermediate composition.

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