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| Publication | M 69 |
|---|---|
| Citation | Schwartz, R.K., and Vuke, S.M., 2019, Estuarine deposits in the Kootenai Formation as evidence of an early Cretaceous (pre-Albian) marine advance into western Montana and relationship to Cordilleran foreland basin evolution: Montana Bureau of Mines and Geology Memoir 69, 88 p. |
| Price | $ 15.00 |
| Document Version | Final |
| Document Status | Print on Demand |
| Description | The paper describes an unusual member of the Kootenai Formation that crops out in the Great Falls, Montana area. Unlike the typical Kootenai of western Montana the unit is highly quartzose and displays marine characteristics. The paper documents in detail the sedimentology, stratigraphy (including sequence stratigraphy), and tectonic setting of this unit which is informally referred to as the Great Falls member of the Kootenai Formation. Significantly, the Great Falls member documents the earliest Cretaceous transgression of a Boreal Sea into Montana which was previously thought to have occurred later. |
| Subject(s) | KOOTENAI FORMATION, EARLY CRETACEOUS, ESTUARY BASIN, TIDAL FACIES, SHOREFACE, PALEODRAINAGE, INCISED VALLEY, PALEOLANDSCAPE, TRACE FOSSILS, DINOSAUR TRACKS, FORELAND BASIN EVOLUTION, DYNAMIC SUBSIDENCE |
| Geographic Area/Counties | CASCADE |
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