Sedimentology and petroleum occurrence, Schoolhouse Member, Maroon Formation (Lower Permian), northwestern Colorado
American Association of Petroleum Geologists Bulletin
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Abstract
The Lower Permian Schoolhouse Member of the Maroon Formation forms a partly exhumed petroleum reservoir in the Eagle basin of northwestern Colorado. The Schoolhouse consists mainly of yellowish gray to gray, low-angle to parallel bedded, very fine to fine-grained sandstone of eolian sand-sheet origin; interbedded fluvial deposits are present in most sections. Geological and geochemical data suggest that Schoolhouse Member oils have upper Paleozoic sources, including the intrabasinal Belden Formation. Late Paleozoic faults have served as local conduits for vertical petroleum migration. Large-scale (>200 km) lateral migration from sources in the Permian Phosphoria Formation is also possible but less likely. Belden oil was generated and migrated before about 75 Ma. Subsequently, the Schoolhouse Member reservoir was uplifted, then partly exhumed on the monoclinal flank of the Laramide (latest Cretaceous-Paleogene) White River uplift. -from Authors
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| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Sedimentology and petroleum occurrence, Schoolhouse Member, Maroon Formation (Lower Permian), northwestern Colorado |
| Series title | American Association of Petroleum Geologists Bulletin |
| DOI | 10.1306/0C9B2277-1710-11D7-8645000102C1865D |
| Volume | 74 |
| Issue | 2 |
| Year Published | 1990 |
| Language | English |
| Publisher | American Association of Petroleum Geologists |
| Contributing office(s) | Central Energy Resources Science Center, Crustal Geophysics and Geochemistry Science Center, Pacific Coastal and Marine Science Center |
| Description | 16 p. |
| First page | 135 |
| Last page | 150 |
| Country | United States |
| State | Colorado |
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