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Table 2--Description and interpretation of facies comprising the typical sedimentary cycel, which is the basis for the interpretation presented in the text.
| Descriptive Facies | Thickness (ft.) |
Lithology | Diagenetic Alternation |
Equiv. # in Fig. 36 |
Genetic Facies |
Depositional Environment |
|---|---|---|---|---|---|---|
| Upper Shale | <5-30 | Red-brown, unbedded silty shale |
intense | 7 | Regressive Shale |
Oxidized, continental clastics |
| Facies Contact: Sharp Contact | ||||||
| Upper (upper) | <1-15 | Lime-mudstone to grainstone common; occ. Dolomitic; sparse to very fossiliferou | moderate to intense |
3, 3a, 4, 5, 6 |
Regressive Carbonate |
Shallow, clear-water carbonate; tidal flat, lagoon, and open marine; high and low energy |
| Carbonate (lower) | 5-25 | Lime-mudstone or wackestone, argillaceous at bottom; fossiliferous | 2 | Subtidal, low energy, clear-water, open-marine carbonate grading downward to mixed turbid argillaceous carbonate | ||
| Facies Contact: Gradational Contact | ||||||
| Lower Shale |
2-20 | Fossiliferous, gray-green; occ. Black | minimal | 1 | Marine Shale |
Subtidal, low energy, marine; restricted, anoxic conditions prevalent to south and to north locally shallow water |
| Facies Contact: Gradational Contact | ||||||
| Lower (upper) |
0-15 | Lime-mudstone to wackestone, fossiliferous | minimal to locally moderate | 2 | Transgressive Carbonate |
Subtidal, low energy, open marine; clear to turbid water conditions |
| Facies Contact: Sharp Contact | ||||||
| Carbonate (lower) |
0-8 | Silty grainstone to packstone; occasionally, base rich in quartz sand or silt | unique combination of 2, 3, 4, 5 |
Sandy or silty reworked shoal water, intermittent restricted to open marine | ||
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Kansas Geological Survey, Cyclic Sedimentation
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Web version Oct. 2004. Original publication date Oct. 1980.
URL=http://www.kgs.ku.edu/Publications/Bulletins/220/table2.html