Interfingering of the Frontier Formation and Aspen Shale, Cumberland Gap, Wyoming.
Mountain Geologist
By: J. M'gonigle
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Abstract
The basal part, or the Chalk Creek Member, of the non-marine lower Frontier Formation (Upper Cretaceous) includes a thin coal bed that grades S into a carbonaceous shale. The latter plus associated sandstones and shales pinch out S of Cumberland Gap and lie stratigraphically below the top of the Aspen Shale. The beds in the upper part of the Aspen, in turn, pinch out within the Frontier Formation. The coal bed and equivalent carbonaceous shale represent in-place accumulation of peat. The interfingering suggests that in SW Wyoming the Lower/Upper Cretaceous boundary is within the Chalk Creek Member. -from Author
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Interfingering of the Frontier Formation and Aspen Shale, Cumberland Gap, Wyoming. |
| Series title | Mountain Geologist |
| Volume | 19 |
| Issue | 2 |
| Year Published | 1982 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Mountain Geologist |
| First page | 59 |
| Last page | 61 |
| Google Analytic Metrics | Metrics page |