M. E. Bickford, K. L. Horrower, W. J. Hoppe, B. K. Nelson, R. L. Nusbaum, J. J. Thomas; Supplementary Data for: Rb-Sr and U-Pb Geochronology and Distribution of Rock Types in the Precambrian Basement of Missouri and Kansas. GSA Bulletin ; 92 (6_Part_II): 963–996. doi: https://doi.org/10.1130/GSAB-P2-92-963
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Most of what we know about basement rocks in Kansas and Missouri is derived from cores and cuttings from deep drilling. These rocks may be divided into a northern terrane, underlain by rocks consisting of abundant granite commonly showing cataclastic textures and by metavolcanic to metasedimentary rocks; and a southern terrane, underlain almost exclusively by rhyolitic flows and ash-flow tuffs and epizonal granite plutons. The northern terrane is interrupted in central Kansas by mafic igneous rocks and flanking arkosic sedimentary rocks of the Central North American Rift System.