However, the relative stratigraphic position of the quarry beds is accurately known from regional stratigraphic studies in southwestern Missouri as the Short Creek oolitic limestone outcrops at the top of the sequence of limestone strata in the old west quarry at Phenix. The exact geologic age of the beds in the quarry is being investigated by paleontologic studies which are being carried on by workers who are interested in trying to establish reliable faunal and stratigraphic bases for determining the boundary between the Burlington and Keokuk formations in this area. “The beds which were quarried are a part of the Burlington or Keokuk formations of the Mississippian system of rocks, which make up the surface rock over a wide area of southwestern Missouri. View looking west at old (west) quarry at Phenix, Green County (1941).
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