Interstratified 1:1–2:1 Mineral Formation in a Polygenetic Soil from Southern Ohio

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Abstract
A polygenetic soil from southern Ohio, formed by loess deposition on a pre‐existing Sangamon paleosol, was examined to determine if the lithologic discontinuity has affected subsequent clay‐mineral weathering or formation. Analyses of the 3 ‐density fraction of the 3 ‐density fraction demonstrated that the 2:1 component of the interstratified mineral was heterogeneous in charge and included layers characteristic of both smectite and vermiculite. Soil properties and depth distribution of the interstratified mineral suggest a pedogenic origin.
Funding Information
  • Ohio Agric. Res. and Development Center
  • Ohio State Univ. (185-88)

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