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Stratigraphy And Sedimentology Of The Sentinel Butte Formation (Paleocene) Near Lost Bridge, Dunn County, West-Central North Dakota, Bradley D. Nesemeier
Stratigraphy And Sedimentology Of The Sentinel Butte Formation (Paleocene) Near Lost Bridge, Dunn County, West-Central North Dakota, Bradley D. Nesemeier
Theses and Dissertations
The Sentinel Butte Formation (Paleocene) near Lost Bridge, Dunn County, west-central North Dakota, is 190 meters thick, and is charac terized by four main lithologies: sand, silt, clay, and lignite. The study interval is ISO meters thick, and lies between the basal sand of the formation and the Bullion Butte lignite bed, neither of which are exposed in the immediate study area. Sand, gray to yellow, makes up about 3S% of the interval studied. It occurs in tabular beds 2-18 meters thick. It is fine to very-fine, angular, and composed largely of quartz, feldspar, rock fragments, with minor amounts of …
A Stratigraphic And Sedimentologic Analysis Of The Tongue River And Sentinel Butte Formations (Paleocene), Western North Dakota, Chester F. Royse Jr.
A Stratigraphic And Sedimentologic Analysis Of The Tongue River And Sentinel Butte Formations (Paleocene), Western North Dakota, Chester F. Royse Jr.
Theses and Dissertations
The Tongue River-Sentirel Butte contact has been regarded by many workers as a vague color boundary of minor extent within a relatively homogeneous sequence of Paleocene strata. Consequently, the Sentinel Butte has come to be regarded as a subordinate unit of the ”Tongue River Formation. As defined in report, the contact is a distinctive horizon between two discrete lithogenetic units. It characterized by three criteria: a horizon (HT Butte bad) &t the top of the Tongue River sequence; a. basal sandy unit in the Sentinel Butte sequence, and a marked change in color between buff yellow Tongue River sediments below …
The Stratigraphy And Geologic History Of The Cannonball Formation (Paleocene), Gary O. Hall
The Stratigraphy And Geologic History Of The Cannonball Formation (Paleocene), Gary O. Hall
Theses and Dissertations
The purpose of this report is to describe the stratigraphy of the Cannonball formation in southwestern North Dakota, and to present a new geologic map of the formation in Oliver, McLean, Burleigh, and Emmons Counties, North Dakota.