Relationship of the Lansing Group and the Tonganoxie ("Stalnaker") Sandstone in South-Central Kansas

Abstract

The "Stalnaker sand," known in the subsurface of southern Kansas as an oil and gas producing zone, is the Tonganoxie sandstone of eastern Kansas outcrops. Evidence is presented in this report that upholds this correlation and disproves the idea that the "Stalnaker" is a facies of the Lansing group. The lithologic difference between the "Stalnaker" and the Lansing is not the result of contemporaneous deposition of different facies but is the result of erosion of the Lansing and deposition of the Tonganoxie ("Stalnaker") sandstone in the erosional depressions and basins left after post-Missourian erosion.