DIAGENESIS AND DISTRIBUTION OF DIAGENETIC FACIES IN THE MISSISSIPPIAN OF SOUTH CENTRAL KANSAS
The petrography of five cores is being interpreted to determine the different diagenetic facies. Diagenetic facies are defined by differing preservation of original rock textures. Although chertification is a pervasive process in the Mississippian, core interpretations show that some lithologies are less susceptible to chertification. Transmitted light microscopy, cathodoluminescence and scanning electron microscopy are used for thin section descriptions. Diagenetic interpretations will be supported with geochemical analysis (stable isotopes; Ca, Mg, Sr, Fe and Mn concentrations; TOC) and mineralogy and crystallinity via x-ray diffraction to determine the diagenetic environment at which minerals are precipitated and the source of the diagenetic fluids that altered the rock. The distribution of diagenetic facies will be determined by developing 3D static models from correlation of core descriptions and petrophysical interpretations of wire line logs. The completion of this research will enhance interpretations of stratigraphy, reservoir characteristics and paleotopographic reconstructions implied from diagenetic environments in the Mississippian system.