Revision of Mississippian stratigraphy, eastern Idaho and northeastern Utah
Journal of Research of the U.S. Geological Survey
By: William Jasper Sando, J. Thomas Dutro Jr., Charles Sandberg, and Bernard L. Mamet
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Abstract
New paleontologic evidence requires a revision of previous interpretations of the stratigraphy of Mississippian sequences in the Cordilleran miogeosyncline of eastern Idaho and northeastern Utah. A postulated unconformity between rocks of early Osagean age and rocks of middle Meramecian age is no longer tenable in the light of new data. The new evidence supports continuous deposition from the Lodgepole Limestone (Kinderhookian and early Osagean age) into the Little Flat Formation (early Osagean to middle Meramecian age) and its equivalents, and the interpretation of a phosphatic siltstone and shale interval in the lower part of the Little Flat Formation as a starved-basin facies.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Revision of Mississippian stratigraphy, eastern Idaho and northeastern Utah |
| Series title | Journal of Research of the U.S. Geological Survey |
| Volume | 4 |
| Issue | 4 |
| Year Published | 1976 |
| Language | English |
| Publisher | U. S. Geological Survey |
| Description | 13 p. |
| First page | 467 |
| Last page | 479 |
| Country | United States |
| State | Idaho, Utah |
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