Sedimentology, diagenesis, and petrophysics of selected Cherokee group (Desmoinesian) sandstones in southeastern Kansas. Part 2
Medium to very fine-grained sandstones of the Cherokee Group in S.E. Kansas were deposited by unidirectional currents in nearshore, continental channels resulting in sandstone deposits up to 35 m (116 ft) thick. Five lithofacies have been established: (1) conglomeratic sandstones subdivided into thin basal and thick sequence- capping conglomerates, (2) stacked sandstones, (3) crossbedded coarse sandstones, (4) rippled fine sandstones; and (5) interbedded sandstones, shales, and siltstones. The following diagenetic stages were established: Stage 1: rare, localized precipitation of concretionary calcite and siderite cements in both sandstones and shales; Stage 2: extensive chlorite coatings on grains and silica cementation; and Stage 3: patchy kaolinite, siderite, and dolomite-ankerite cements develop while feldspars, micas, and argillaceous rock fragments dissolve. A model is proposed for Cherokee Group sandstones which shows that coarser grain size, less cementation, and fewer argillaceous rock fragments are found in the coarse sandstone lithofacies in the lower portion of sandstone sequences. 96 references.
- OSTI ID:
- 5870870
- Journal Information:
- Shale Shaker; (United States), Journal Name: Shale Shaker; (United States) Vol. 33:10; ISSN SHSKA
- Country of Publication:
- United States
- Language:
- English
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Sedimentology, diagenesis, and petrophysics of selected Cherokee group (Desmoinesian) sandstones in Southeastern Kansas. Part 1
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