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Articles 10471 - 10500 of 11750
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Depositional Environments Of A Portion Of The Bullion Creek Formation (Paleocene), Western Billings County, North Dakota, Rodney K. Perkins
Depositional Environments Of A Portion Of The Bullion Creek Formation (Paleocene), Western Billings County, North Dakota, Rodney K. Perkins
Theses and Dissertations
The Bullion Creek Formation (Paleocene) in North Dakota is part of an Upper Cretaceous to Eocene wedge of siliciclastic rocks formed during uplift associated with the Laramide Orogeny. The Bullion Creek Formation consists predominantly of mudrocks , with fine-grained sandstone, lignite, and rare limestone lenses . Previous workers have postulated combinations of fluvial and lacustrine depositional environments for the rocks.
The study area covers 15 square kilometres in the badlands of the Little Missouri River in western Billings County, North Dakota, where approximately the upper 75 metres of the Bullion Creek Formation ls exposed. Twenty nine stratigraphic sections were measured …
Geohydrologic Evaluation Of A Proposed Coal-Ash Disposal Site Near Mandan, North Dakota, David M. Ronnei
Geohydrologic Evaluation Of A Proposed Coal-Ash Disposal Site Near Mandan, North Dakota, David M. Ronnei
Theses and Dissertations
Montana-Dakota Utilities Company (MDU) operates Heskett Station, a 100 megawatt coal-fired power plant, located near Mandan, North Dakota. In the process of generating electricity, MDU's Heskett Station produces approximately 62,000 tons of coal-ash annually. The ash has been disposed of by above-ground stockpiling on the plant site for the past 35 years. Limited storage space and new solid waste regulatory restrictions have necessitated the search for a new ash disposal site.
This investigation focused on selecting a disposal site that would be suitable for long-term disposal of coal-ash generated at Heskett Station. Specifically, the objective was to locate a site …
Metamorphism In The Wabigoon Subprovince In The Vicinity Of Vermilion Bay And Sioux Lookout, Ontario, Christine K. Roob
Metamorphism In The Wabigoon Subprovince In The Vicinity Of Vermilion Bay And Sioux Lookout, Ontario, Christine K. Roob
Theses and Dissertations
The Wabigoon-English River subprovince boundary has been proposed by various workers to be either a fault, an unconformity, an intrusive contact or a gradational boundary. North of the Wabigoon Fault, in the Vermilion Bay-Dryden area, migmatization and partial melting of meta sediments have produced a variety of metatexitic and diatexitic migmatites. Because migmatites are not encountered in the Wabigoon subprovince proper and the area north of the Wabigoon fault is so different from the rest of the subprovince, it is thought that the area may constitute the southernmost part of the English River sub province.
The Wabigoon Subprovince is a …
Depositional Environments And Diagenesis, Winnipegosis Formation (Middle Devonian), Williston Basin, North Dakota, Nancy A. Perrin
Depositional Environments And Diagenesis, Winnipegosis Formation (Middle Devonian), Williston Basin, North Dakota, Nancy A. Perrin
Theses and Dissertations
In the Williston Basin, the Winnipegosis Formation is the major carbonate unit of the initial transgressive-regressive pulse of the Kaskaskia sequence. Twenty-two lithofacies were identified by well-log, core, and thin-section studies of Winnipegosis rocks; these belong to seven environments of deposition which include deep basin, deep shelf, shallow shelf, reef, lagoon, tidal flat, and evaporite basin. The deposition of the Winnipegosis and Prairie Formations were inter-related and occurred during six episodes. Following a brief hiatus separating the underlying Ashern Formation from the Winnipegosis, a clear, quiet, shallow-marine environment became established in the North Dakota portion of the Elk Point Basin. …
Evaluation Of The Interaction Between Seepage From A Municipal Waste Stabilization Lagoon, Mcville, North Dakota, And A Shallow Unconfined Aquifer, Paul R. Bulger
Theses and Dissertations
The McVille, North Dakota, Municipal Waste Stabilization Lagoon is situated above the McVille Aquifer, an unconfined glaciofluvial aquifer capable of significant water yields. The site contains a 3-D network of 29 monitoring wells. Standing waste-water is maintained in the clay-lined, primary-operating cell. Operating practices at the site entail periodic discharges of waste-water from the lined cell to an unlined cell, a procedure which results in rapid infiltration.
The shape and extent of the groundwater contaminant plume caused by the waste-stabilization process is best delineated by the distribution of chloride. Background wells contain less than 10 mg/L chloride. The area up …
Geology Newsletter- 1986, Department Of Geology
Geology Newsletter- 1986, Department Of Geology
Geological and Environmental Sciences News
Vol. 1, No. 11
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A Hydrogeologic Investigation Of The Balkema Wetland, Daniel V. Fronczek
A Hydrogeologic Investigation Of The Balkema Wetland, Daniel V. Fronczek
Masters Theses
The Balkema wetland, located In southwestern Kalamazoo County, Michigan, represents complex biological and hydrologic Interaction between surface water and a two-aquifer hydrologic system. Situated on the southeastern flank of the Kalamazoo moraine, the glacial geology of the area plays a key role in the understanding of the hydrogeologic function of the wetland. A two-aquifer system, an upper unconfined, and a lower confined, Interact In the vicin ity of the wetland where the c la y /till aqulclude dividing the two systems 1s absent. Various parameters, both hydrologic and geochemical, were measured In the study area, Including specific conductance values of …
Fracture Detection In A Volcanic Oil Reservoir Using Discriminant Analysis Of Well Log Data, Joseph William Cross
Fracture Detection In A Volcanic Oil Reservoir Using Discriminant Analysis Of Well Log Data, Joseph William Cross
OES Theses and Dissertations
A new method of detecting fractures using well logs is presented. The technique uses discriminant analysis to distinguish fractured from unfractured reservoir rock and was developed for the volcanic pay zone of Jatibarang oilfield, West Java, Indonesia.
The a priori information required to derive the discriminant function was provided by 22 wells known to penetrate intervals of either fractured or unfractured volcanics. The samples consisted of these 22 intervals digitized in one-meter increments (1256 meters total thickness). The discriminating variables were the petrophysical measurements made by 10 different types of well logs.
Discriminant analysis correctly classified 94.2% of the total …
The National Park System And Development On Private Lands: Opportunities And Tools To Protect Park Resources, Michael Mantell
The National Park System And Development On Private Lands: Opportunities And Tools To Protect Park Resources, Michael Mantell
External Development Affecting the National Parks: Preserving "The Best Idea We Ever Had" (September 14-16)
34 pages.
Contains footnotes.
Pollution In Parks: A Publication Of The National Park Service, Richard H. Briceland
Pollution In Parks: A Publication Of The National Park Service, Richard H. Briceland
External Development Affecting the National Parks: Preserving "The Best Idea We Ever Had" (September 14-16)
28 pages (includes illustrations).
Contains references.
Protection Of Waters Within And Without Park Boundaries To Support National Parks And Other Units Of The National Park System, A. Dan Tarlock
Protection Of Waters Within And Without Park Boundaries To Support National Parks And Other Units Of The National Park System, A. Dan Tarlock
External Development Affecting the National Parks: Preserving "The Best Idea We Ever Had" (September 14-16)
8 pages.
Restoring The Biological Integrity Of Everglades National Park, Estus D. Whitfield
Restoring The Biological Integrity Of Everglades National Park, Estus D. Whitfield
External Development Affecting the National Parks: Preserving "The Best Idea We Ever Had" (September 14-16)
29 pages.
Contains references.
Agenda: External Development Affecting The National Parks: Preserving "The Best Idea We Ever Had", University Of Colorado Boulder. Natural Resources Law Center
Agenda: External Development Affecting The National Parks: Preserving "The Best Idea We Ever Had", University Of Colorado Boulder. Natural Resources Law Center
External Development Affecting the National Parks: Preserving "The Best Idea We Ever Had" (September 14-16)
Conference organizers and/or faculty included University of Colorado School of Law professors Lawrence J. MacDonnell and Daniel Magraw.
The conference will be held at the Aspen Lodge, adjacent to Rocky Mountain National Park near Estes Park, Colorado.
It was Wallace Stegner who called the national parks "the best idea we ever had." The continuing increases in usage attest to their popularity. National parks are created to preserve areas of special scenic and cultural value for enjoyment and use. Managing the parks in a manner that protects the important values and purposes for which they were created presents important and difficult …
Abatement Of Nitrate Pollution In Groundwater And Surface Runoff From Cropland Using Legume Cover Crops With No-Till Corn, M. Scott Smith, Jac J. Varco
Abatement Of Nitrate Pollution In Groundwater And Surface Runoff From Cropland Using Legume Cover Crops With No-Till Corn, M. Scott Smith, Jac J. Varco
KWRRI Research Reports
Agricultural practices can have a significant impact on water quality. The effects of leguminous winter cover crops on leaching of NO-3; from soil have been investigated in this project. Legume cover crops, by fixation of atmospheric N, can reduce the amount of fertilizer N required to produce summer grain crops. The methods initially used to evaluate cover crop effects on No; transport included suction probe lysimeters and measurement of NO-3; in soil samples collected to a depth of 90 cm. These measurements demonstrated extreme spatial variability in NO-3; distribution and water …
After The Concrete Sets: The Future Role Of The Bureau Of Reclamation In Western Water Management, John D. Leshy
After The Concrete Sets: The Future Role Of The Bureau Of Reclamation In Western Water Management, John D. Leshy
Western Water: Expanding Uses/Finite Supplies (Summer Conference, June 2-4)
23 pages.
Contains references.
Water Conservation Through Integrated Basinwide Implementation, Steven J. Shupe
Water Conservation Through Integrated Basinwide Implementation, Steven J. Shupe
Western Water: Expanding Uses/Finite Supplies (Summer Conference, June 2-4)
12 pages.
Policies To Enhance Western Water Use Efficiency: Best Of The West, Bruce C. Driver
Policies To Enhance Western Water Use Efficiency: Best Of The West, Bruce C. Driver
Western Water: Expanding Uses/Finite Supplies (Summer Conference, June 2-4)
18 pages.
Innovative Approaches To Water Allocation: The Potential For Water Markets, Charles W. Howe
Innovative Approaches To Water Allocation: The Potential For Water Markets, Charles W. Howe
Western Water: Expanding Uses/Finite Supplies (Summer Conference, June 2-4)
20 pages.
Changing The Use Of Water Rights In Colorado: Recent Experience, John Wittemyer
Changing The Use Of Water Rights In Colorado: Recent Experience, John Wittemyer
Western Water: Expanding Uses/Finite Supplies (Summer Conference, June 2-4)
38 pages.
Toward Optimal Utilization Of Water Resources: The “Physical Solution", Harrison C. Dunning
Toward Optimal Utilization Of Water Resources: The “Physical Solution", Harrison C. Dunning
Western Water: Expanding Uses/Finite Supplies (Summer Conference, June 2-4)
18 pages.
Agenda: Western Water: Expanding Uses/Finite Supplies, University Of Colorado Boulder. Natural Resources Law Center
Agenda: Western Water: Expanding Uses/Finite Supplies, University Of Colorado Boulder. Natural Resources Law Center
Western Water: Expanding Uses/Finite Supplies (Summer Conference, June 2-4)
Conference organizers and/or faculty included University of Colorado School of Law professors James N. Corbridge, Jr., Lawrence J. MacDonnell and David H. Getches.
This conference featured luncheon talks by Colorado Governor Richard D. Lamm and Undersecretary of the Department of the Interior Ann McLaughlin. The conference attracted 115 registrants from 19 states plus the District of Columbia.
Changing Patterns Of Water Use In The West: Pressures On The System, David H. Getches
Changing Patterns Of Water Use In The West: Pressures On The System, David H. Getches
Western Water: Expanding Uses/Finite Supplies (Summer Conference, June 2-4)
17 pages.
Opportunities For Improving The Ways We Use Water, Thomas M. Stetson
Opportunities For Improving The Ways We Use Water, Thomas M. Stetson
Western Water: Expanding Uses/Finite Supplies (Summer Conference, June 2-4)
40 pages.
Contains references.
Potential Improvements In Irrigation Management Practices: Water Savings And Costs, James R. Gilley
Potential Improvements In Irrigation Management Practices: Water Savings And Costs, James R. Gilley
Western Water: Expanding Uses/Finite Supplies (Summer Conference, June 2-4)
26 pages.
Augmenting Municipal Water Supplies Through Agricultural Water Conservation, David Engels
Augmenting Municipal Water Supplies Through Agricultural Water Conservation, David Engels
Western Water: Expanding Uses/Finite Supplies (Summer Conference, June 2-4)
38 pages (includes maps).
Water Development And Acquisition For A Municipal Supply, Tom Griswold
Water Development And Acquisition For A Municipal Supply, Tom Griswold
Western Water: Expanding Uses/Finite Supplies (Summer Conference, June 2-4)
18 pages.
The Engineering Geology Of The Fountain Landslide, Hood River County, Oregon, Susanne L. D'Agnese
The Engineering Geology Of The Fountain Landslide, Hood River County, Oregon, Susanne L. D'Agnese
Dissertations and Theses
The Fountain Landslide located along I-84, five kilometers east of Cascade Locks, Oregon has moved periodically for over thirty years. Aerial photographs taken prior to recorded movement of the landslide show the headscarp of a large preexisting landslide. In 1952 a cut was made into the toe of the landslide to straighten Highway 30. The recorded movement history begins at this time. Stabilization procedures in the late 1950's focused on dewatering the slide mass. Movement had nearly stopped by 1957. A deeper cut was made into the toe of the landslide in 1966 to widen the highway to the four-laned …
A Procedure For Testing Cored Ice Under Uniaxial Tension, Russell W. Lee
A Procedure For Testing Cored Ice Under Uniaxial Tension, Russell W. Lee
Dartmouth Scholarship
A procedure is described for testing cored ice specimens under uniaxial tension. The procedure incorporates an end-capping system described by Cole and others (1985), two carpeted Synthane end caps, and extensometers mounted directly on the ice. Use of the procedure has resulted in a successful test rate of 75%
Dynamic Deformation Of Volcanic Ejecta From The Toba Caldera: Possible Relevance To Cretaceous/Tertiary Boundary Phenomena, Neville L. Carter, Charles B. Officer, Craig A. Chesner, William I. Rose
Dynamic Deformation Of Volcanic Ejecta From The Toba Caldera: Possible Relevance To Cretaceous/Tertiary Boundary Phenomena, Neville L. Carter, Charles B. Officer, Craig A. Chesner, William I. Rose
Department of Geological and Mining Engineering and Sciences Publications
Plagioclase and biotite phenocrysts in ignimbrites erupted from the Toba caldera, Sumatra, show microstructures and textures indicative of shock stress levels higher than 10 GPa. Strong dynamic deformation has resulted in intense kinking in biotite and, with increasing shock intensity, the development in plagioclase of planar features, shock mosaicism, incipient recrystallization, and possible partial melting. Microstructures in quartz indicative of strong shock deformation are rare, however, and many shock lamellae, if formed, may have healed during post-shock residence in the hot ignimbrite; they might be preserved in ash falls. Peak shock stresses from explosive silicic volcanism and other endogenous processes …
Comparison Of Four Infiltration Models In Characterizing Infiltration Through Surface Mine Profiles, Larry G. Wells, A. D. Ward, I. D. Moore, R. E. Phillips
Comparison Of Four Infiltration Models In Characterizing Infiltration Through Surface Mine Profiles, Larry G. Wells, A. D. Ward, I. D. Moore, R. E. Phillips
Biosystems and Agricultural Engineering Faculty Publications
A laboratory infiltrometer system was used to evaluate the infiltration process through reconstructed surface mine profiles. Six different profiles were subjected to constant simulated rainfall intensities for selected test conditions. Surface runoff rates were monitored and transient soil moisture contents in the profiles were measured with a gamma density gauge. Unsaturated hydraulic conductivity relationships were determined using Campbelfs method and the "zero-flux" procedure. The infiltration process was modeled by the SCS curve number method, a form of Holtan's equation, the Green-Ampt model and Richards' equation. SCS curve numbers were determined by fitting the method to the observed results. Richards' equation …