KGS Cyclic Sedimentation Original published in D.F. Merriam, ed., 1964, Symposium on cyclic sedimentation: Kansas Geological Survey, Bulletin 169, pp. 541-563

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Figure 9--Concretions from Limopsis-Gervillia Assemblage Zone. A, Weathered core of a Limopsis concretion. B, Fresh fragment of a Limopsis concretion. C, Part of a Gervillia concretion oriented as found in place.

black and white photo of three concretions

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Kansas Geological Survey
Comments to
Web version March 2003. Original publication date Dec. 1964.