Earth Sciences Commons^™

Neogastropods (Melongenidae, Fasciolariidae, Turridae) From The Cannonball Formation (Paleocene: Thanetian), North Dakota And South Dakota, Brian E. Silfer

Theses and Dissertations

The Cannonball Formation of Paleocene age is a shallow-marine, clastic sequence exposed primarily in southwest-central North Dakota and northwestern South Dakota. The formation is characterized by alternating, poorly consolidated, relatively thin sandstone and thick mudstone units. The Cannonball neogastropod families Melongenidae, Fasciolariidae, and Turridae contain 20 species assigned to 15 genera based on 334 individuals from 50 localities. Four genera, Alticollarum, Obtusicarina, Vitticoncha, and Ericksonia are new, whereas Serrifusus, Mesorhytis, Rhombopsis, and Deussenia are first reported occurrences from Tertiary strata. Marshallaria is newly reported from North America and likely from the Northern Hemisphere. Twelve species are additions to the Cannonball …

The Broom Creek Formation (Permian), In Southwestern North Dakota: Depositional Environments And Nitrogen Occurrence, Marvin E. Rygh

Theses and Dissertations

In North Dakota, the Broom Creek Formation (Wolfcampian> exists in the subsurface as the upper unit of the Minnelusa Group. The Broom Creek Formation consists of pink quartzarenite with some intervening dolostone beds. The identification of lithofacies, areal distribution, and stratigraphic relationships were determined from oil well logs, mainly the dual laterolog suite and the FDC-CNL log suite, and macroscopic and microscopic core analysis. were examined from four wells.

The major lithofacies identified are, 1) eolian Cores sandstone, 2) nearshore marine sandstone, and 3) marine carbonate. From the sandstone-dolostone distribution, marine predominance existed in the eastern part of the study …

Depositional Environments, Ichnology And Diagenesis Of The Upper Frobisher-Alida Beds Of The Elkhorn Ranch And Roughrider Fields Of Western North Dakota, Jeffrey R. Valvik

Theses and Dissertations

The upper Frobisher-Alida interval of western North Dakota was studied in order to determine the depositional envirornnents, bioturbation features, and the diagenetic history of these carbonate and evaporite rocks.

Detailed examination resulted in the identification of six distinct lithotypes: 1) crinoid, coral packstone-wackestone (LT-1); 2) brachiopod, skeletal wackestone (LT-2); 3) skeletal, burrowed mudstone-wackestone; 4) intraclast, peloid packstone-grainstone; 5) peloid, intraclast, ostracode packstone-wackestone; 6) nodular and bedded anhydrite (LT-6). Lithofacies generally follow a depositional sequence of thick units of sublittoral carbonates, followed by a thin sequence of littoral carbonates, and culminating in a thick unit of sublittoral evaporites. Sublittoral rocks dominate …

The Hydrogeologic Effects Of Fly Ash Utilization In Concrete At Coal Creek Station, Underwood, North Dakota, Terry R. Johnson

Theses and Dissertations

Coal Creek Station is a two-unit 1100 megawatt electrical power plant located in southern McLean county, North Dakota. Annually, 5 million tons (4.5 million metric tons) of lignite are burned at the plant producing 550,000 tons (500,000 metric tons) of fly ash. Approximately 80,000 tons (72,624 metric tons) of ash are sold as a cement replacement, while the remainder is disposed of in lined evaporation ponds. The present study investigates the environmental consequences of ash utilization as an alternative to disposal, The Electric Power Research Institute (EPRI) provided funding for this investigation which involves the installation of 5,288 cu yds …

Depositional Environments And Sandstone Diagenesis In The Tyler Formation (Pennsylvanian), Western North Dakota, Larry R. Quandt

Theses and Dissertations

Thirty-three oil well cores were examined and approximately 3,100 oil well logs were used to determine the depositional environments of the Tyler Formation (Pennsylvanian) in northwestern North Dakota. Ninety sandstone thin-sections were described and twenty-nine sandstone samples were analyzed by scanning electron microscope/X-ray microanalysis techniques to characterize sandstone diagenesis.

The Tyler Formation in northwestern North Dakota is correlative with the lower unit of the Tyler Formation in southwestern North Dakota. The upper unit of the Tyler Formation in southwestern North Dakota is not present in northwestern North Dakota, contrary to previous workers suggestions. The Tyler Formation in northwestern North Dakota …