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Showing 1 to 20 of 105 for “"Butte"”.
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Petrology of the Sentinel Butte Formation (Paleocene), North Dakota
<p> Sedimentary materials of the Sentinel Butte Formation have been petrographically examined using optical and scanning electron micro scope/microprobe techniques. The formation consists of fine-grained materials which generally are classified mineralogically as volcanic litharenites or …
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Algal Succession and Nutrient Dynamics in Elephant Butte Reservoir
A water quality model was created for Elephant Butte Reservoir, New Mexico to understand nutrient dynamics and algal response during a three year period. The model chosen for this study was CE-QUAL-W2 because of its proven ability to represent hydrodynamics and the ability to represent multiple …
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Smelting of a dry silver ore from Butte, Montana
Thesis: B.S., Massachusetts Institute of Technology, Department of Mining Engineering and Metallurgy, 1891
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Characterization of Sentinel Butte Petrified Wood and Host Lithology Associations
… petrified wood occur in the Paleocene Sentinel Butte Formation in western North Dakota. An examination of this petrified wood has provided information about modes and degrees of fossilization, silica phases present, organic structure preservation, and parent tree type. In the study site, …
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The geology of the Grassy Butte area, McKenzie County, North Dakota
<p>The Grassy Butte area lies in southern McKenzie County, just southwest of the deepest part of the Williston Basin, and is bordered on the north by the North Unit of the Theodore Roosevelt National Memorial Park.</p> <p>the purpose of this investigation was: (1) to prepare a geological map of the …
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The Columbia Gardens Amusement Park: Company Sponsored Community in Butte, Montana
In 1899, William A. Clark, one of Butte, Montana’s famous “Copper Kings,” purchased 21 acres of land east of Butte, on which he created the Columbia Gardens amusement park. Clark ran his park at personal expense, refusing to charge admission and regularly offering special deals so that Butte …
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The Columbia Gardens Amusement Park: Company Sponsored Community in Butte, Montana
In 1899, William A. Clark, one of Butte, Montana’s famous “Copper Kings,” purchased 21 acres of land east of Butte, on which he created the Columbia Gardens amusement park. Clark ran his park at personal expense, refusing to charge admission and regularly offering special deals so that Butte …
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Intense Shallow Magma Sediment Mingling within Dikes at Guffey Butte Maar, Idaho
… eroded Pleistocene basalt maar complex, Guffey Butte, Idaho to investigate extreme sediment magma mingling in a non-explosive environment. Exposed dikes cut through both lake Idaho sands and silts and Guffey Butte pyroclastic deposits. Through a combination of field mapping, microtexture …
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Fresh Water Mollusks of the Grassy Butte Area McKenzie County, North Dakota
… 92 specimens from six localities in the Grassy Butte area of North Dakota are here identified and located stratigraphically. The genera identified are Viviparus, Lioplacodes, Campeloma, and Reesidella. These fauna come from the Tongue River formation and the Sentinel Butte member of the Tongue …
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Preliminary report on the geology of Colgrove Butte, Hettinger County, North Dakota
<p>Colgrove Butte is a flat-topped erosional remnant with a cap of rock area of approximately 0.845 square miles, rising about 200 feet above the surrounding Missouri Plateau in northwestern Hettinger County, North Dakota. Its upper portion consists of flat lying fresh water deposits of White River …
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COMING TO THE SURFACE: THE ENVIRONMENT, HEALTH, AND CULTURE IN BUTTE, MONTANA
<p>Butte is a small town in southwest Montana that was profoundly shaped by over a century of mining and smelting activities. Today, Butte is a post-industrial city that is the focal point of America's largest Superfund site as well as the nation's largest National Historic District. There are two …
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COMING TO THE SURFACE: THE ENVIRONMENT, HEALTH, AND CULTURE IN BUTTE, MONTANA
<p>Butte is a small town in southwest Montana that was profoundly shaped by over a century of mining and smelting activities. Today, Butte is a post-industrial city that is the focal point of America's largest Superfund site as well as the nation's largest National Historic District. There are two …
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Analysis of Lacustrine Deposits of Custer Lookout and Leftor Butte, Stark County, North Dakota
… North Dakota has several limestone-capped buttes. These units are commonly considered to be of lacustrine origin, although no specific paleoenvironmental analysis has been conducted. The purpose of this research was to determine if petrographic or other laboratory evidence supports a …
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Variations in δ56Fe during magma differentiation at Cedar Butte volcano: signatures of thermal diffusion?
… along the Yellowstone hot spot track. Cedar Butte is a SRP volcanic complex which erupted a compositional progression of lavas from initial high silica rhyolite to final basaltic trachyandesite in the late pleistocene (~0.4 Ma). The lavas form a curved array on a MgO vs SiO2 diagram, ruling …
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Non-Lignite Marker Beds in the Sentinel Butte formation, McKenzie and Dunn Counties, North Dakota
<p>Non-lignite marker beds in the Sentinel Butte Formation have been noted by several authors (Fisher, 1953; Meldahl, 1956; Clark, 1966; Royse, 1970; Cherven, 1973; Johnson, 1973). Five non-lignite marker beds listed by Royse (1970): 1) basal sand bed, 2) blue bed, 3) lower yellow bed, 4) upper …
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Petrology of the Beulah-Zap lignite bed, Sentinel Butte Formation (Paleocene), Mercer County, North Dakota
… economically important lignites in the Sentinel Butte Formation (Paleocene). This lignite occurs as a subsurface unit in the Knife River Basin of Mercer and I Oliver counties of North Dakota. The Beulah-Zap lignite is a heterogeneous carbonaceous rock unit composed of megascopic and microscopic I …
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Earliest Known Material of Amia, Bowfin, From The Sentinel Butte Formation (Paleocene), Medora, North Dakota
… of <em>Amia</em> were found in the Sentinel Butte Formation, a geologic formation of Paleocene age (~ 60 million years ago) near the town of Medora, North Dakota. The specimens are classified as <em>Amia</em> because the coronoid tooth plates exhibit conical teeth and the parasphenoid …
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Depositional environments of the upper part of the Sentinel Butte Formation, southeastern McKenzie County, North Dakota
… thick interval in the upper part of the Sentinel Butte Formation in southeastern McKenzie County, North Dakota have been determined from the sedimentary structures, geometry, distribution of grain· sizes, and stratigraphic relations of cyclic lithostratigraphic units. The top of the study interval …
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High- and low-sinuosity stream deposits of the Sentinel Butte Formation (Paleocene) McKenzie County, North Dakota
… channel deposits in the Sentinel Butte Formation occur as elongate, tabular beds of sand that fine upward from an erosional base. The sand beds contain epsilon cross-stratification, within which stratification changes upward from large-scale trough crossstratification to horizontal …
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Paleogeography and Paleoenvironments of the Lower Unit, Fossil Butte Member, Eocene Green River Formation, Southwestern Wyoming
… analysis of the Lower Unit of the Fossil Butte Member revealed a well developed lacustrine sequence south of Fossil Butte, and indicates four major depositional facies: (1) open lacustrine, (2) marginal lacustrine, (3) carbonate mudflat, and (4) marginal fluvio-deltaic. The open lacustrine …
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