Physical Sciences and Mathematics Commons^™

Biogeochemical Processes In Sagebrush Ecosystems: Interactions With Terrain, United States, National Aeronautics And Space Administration

Plants

Field data collection to support analysis of TM data was accomplished from June 22 to August 28th. Color infrared aerial photography acquired by a U2 on June 12, 1985 was used to locate and identify several vegetation communities. Forty sites where the USFS has collected long term ground cover were located in the field, delineated on aerial photos and ground photos of current conditions taken.

The Virginius Vein Ore Deposit, Northwestern San Juan Mountains, Colorado: A Study Of The Mineralogy, Structure, And Fluid Inclusions Of An Epithermal Base-Metal And Silver Vein In A Volcanic Environment, Berton Woodward Coxe

Earth and Planetary Sciences ETDs

The Virginius ore deposit, Ouray and San Miguel Counties, Colorado, yielded 14.5 million oz of silver between 1880 and 1912. The deposit consists of several quartz, base-metal, and silver mineralized fissures which is hosted by Tertiary volcanic rocks of the San Juan volcanic field and was deposited in fractures radial to the northwest margin of the Silverton caldera.

Four stages of mineralization have been recognized: (I) quartz, galena, sphalerite, chalcopyrite, and argentiferous tetrahedrite; this stage comprises a bulk of the total vein material and all of the silver; (II) rhodonite, rhodochrosite, quartz, magnetit, galena, chalcopyrite, and pyrite; this stage is …

Thiram And Methiocarb As Deer Mouse Repellents And Agents For Conditioned Aversion, Bobbi A. Holm

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.

Use Of Nitrification Inhibitors On Wheat, Lloyd W. Murdock

Soil Science News and Views

Nitrogen is one of the most important inputs 1in wheat production, but sometimes one of the most difficult to manage. Sources of nitrogen commonly used in Kentucky have most or all of their nitrogen in the ammonium (NH⁺₄) form or forms readily converted to NH⁺₄ (anhydrous ammonia 100%, urea 100%, N-solutions 75%, ammonium nitrate 50%), The ammonium form of nitrogen is used by the plant and retained in the soil with little chance 2f loss, In soils with temperatures above 50°F the ammonium is converted to the nitrate (NO₃) form of nitrogen. Nitrate …

Geology Newsletter- 1985, Department Of Geology

Geological and Environmental Sciences News

Vol 1 No. 10

• Dear Alumni and Friends
• Geology Development Fund
• Advisory Council
• Faculty News
• W. David Kuenzi Scholarship Fund
• Awards and Scholarships
• Geology and Earth Science Club

Kinematics Of Great Basin Intraplate Extension From Earthquake, Geodetic And Geologic Information, Paul Kendall Eddington

All U.S. Government Documents (Utah Regional Depository)

Strain rates assessed from brittle fracture, associated with earthquakes, and total brittle-ductile deformation measured from geodetic data have been compared to paleostrain from Quaternary geology for the intraplate Great Basin of the western United States. These data provide an assessment of the kinematics and mode of lithospheric extension that the western U.S. Cordillera has experienced in the last 5-10 million years. Strain and deformation rates were determined by the seismic moment tensor method using historic seismicity and fault plane solutions. By subdividing the Great Basin into areas of homogeneous strain it was possible to examine regional variations in the strain …

Lithofacies And Geochemistry Of Interreef Carbonates, Middle Silurian, Michigan Basin, Eric N. Porcher

Masters Theses

The Niagara Group of the Michigan Basin is composed of reef, interreef, and basinal carbonates. The Niagara Group interreef has herein been divided into several litho facies: algal-laminated dolomicrite, bioturbated dolomicrite, intraclastic dolomicrite, wispy-laminated dolomicrite, crinoidal micrite, and nodular micrite. These interreef carbonates show a shallowing upward sequence.

The geochemistry of the Niagara Group interreef was examined in an attempt to delineate any geochemical gradients with respect to reefs. The geochemistry of the inter reef was determined by Particle Induced X-Ray Emission (PIXE) analysis. No significant geochemical gradients were found to be associated with reefs. Reasons for this may include: …

The Use Of Electrical Resistivity To Delineate A Brine Contamination Plume In The Walker Oilfield, Kent County, Michigan, Kent E. Meisel

Masters Theses

Contamination of groundwater with oil field brines was reported in the Walker Oil Field, Michigan. An electrical resistivity survey utilizing the Vertical Electrical Sounding method was conducted to test the method as an exploratory tool for delineating brine contamination in glacial deposits. The method was successful in defining the subsurface geology and delineating a shallow, confined aquifer, but the presence of extensive, conductive clays effectively masked the presence of brine contamination. The method was shown to be an effective exploratory tool for shallow investigations.

Geophysical And Hydrogeological Effects Of Astorm-Water Retention Pond On The Floridan Aquifer, Hillsborough County, Florida, Abdullah M. Alamri

USF Tampa Graduate Theses and Dissertations

An integrated geologic, hydrologic, and geophysical investigation was conducted to determine the effect of a storm-water retention pond on the Floridan aquifer. Surface DC resistivity surveys were used to delineate the hydrostratigraphy. There are four distinct geoelectric layers: (1) Layer 1, high resistivity, 3 meters thick, fine to very fine unsaturated sand; (2) Layer 2, moderate resistivity, 1 to 2.5 meters thick, saturated sands and silts; (3) Layer 3, lower resistivity, 4 to 10 meters thick, silt and clay; (4) Layer 4, moderate resistivity, argillaceous limestone. Two fracture zones are defined by resistivity lows and marked by deep, V-shaped depressions …

Reply To Comment On "Subduction Of The Caribbean Plate And Basement Uplifts In The Overriding South American Plate", James N. Kellogg, William E. Bonini

Faculty Publications

No abstract provided.

The Response Of The Kentucky River Drainage Basin To A Lowering Of Base Level Control, David B. Warwick

Masters Theses

The Kentucky River has responded to a lowering of base level control by: 1) deepening the course of its channel; 2) cutting off meanders as incision proceeded; 3) developing knickpoints on tributaries; 4) widening its valley; and 5) dissecting the upland surface.

Field work involved surveying streams to obtain profiles. Twenty streams covering 125 miles of river from Carrollton to Camp Nelson, Kentucky were surveyed. Knickpoints were defined from these profiles. Data from stream profiles showed knickpoint distances decreasing with increasing distance up river. Map work involved obtaining data for hypsometric curves. Hypsometric integrals were determined from these curves. Data …

Geometry Of Silicic Dikes Beneath The Inyo Domes, California, Jonathan H. Fink

Geology Faculty Publications and Presentations

Structural geologic evidence in the vicinity of the Inyo Domes indicates that the youngest extrusive products were erupted from a silicic dike that divided into at least three segments which underwent up to 30° of clockwise rotation as they neared the surface. The geometry of ground cracks, explosion craters, and surface structures on the domes suggest that the dike may have propagated laterally from a source beneath Mammoth Mountain, with both the overall-dike and the individual segments rising as they moved northward. Structural evidence and tephrochronology also imply that the actual vents may have migrated northward along individual dike segments …

Characterizing Soil Deformation By Direct Measurement Within The Profile, Randall K. Wood, Larry G. Wells

Biosystems and Agricultural Engineering Faculty Publications

A unique feature of the University of Kentucky soil bin enables deformation to be characterized by studying a cross-sectional soil profile grid pattern. Modular sections of the bin are laterally removed to expose the cross-section after passes of a pneumatic tire.

The measured displacements of the grid points were converted to values of volumetric strain and then compared to soil density as measured by a dual probe gamma-ray density gauge following tests at various soil conditions. Final soil bulk density determinations using the two methods were not statistically different..

Fertilizer Use Changes In The U.S. And Kentucky, Monroe Rasnake, Dan Kirkland

Soil Science News and Views

The use of inorganic fertilizers for crop production is perhaps the most successful educational program ever attempted by Land-Grant Colleges, the Tennessee Valley Authority and other agencies. Not many producers in the United States or the world will attempt to grow a crop without the use of fertilizers. In fact, some producers over fertilize and in recent years, the educational program has been aimed at teaching producers to limit fertilizer applications to what is actually needed based on soil tests and cropping conditions.

Baltimore Harbor And Channels Aquatic Benthos Investigations : Final Technical Report, Robert J. Diaz, Linda C. Schaffner, Robert J. Byrne, Robert A. Gammisch

Reports

This report describes work performed by the Virginia Institute of Marine Science, School of Marine Science of the College of William and Mary, Gloucester Point, VA, to document the existing preoperational conditions at four locations in the Chesapeake Bay selected as possible dredged material disposal areas for the deepening of the Baltimore Channel. The work was sponsored by the Baltimore District Corps of Engineers.

The objectives of this work were at each of the four potential disposal sites:

1 -document the surface (0-15 em) sediment conditions spatially and temporally

2 - document macrobenthic communities spatially and temporally.

3 - empty …

Innovative Transfer And Exchange Plans, Glenn E. Porzak

Colorado Water Issues and Options: The 90's and Beyond: Toward Maximum Beneficial Use of Colorado's Water Resources (October 8)

36 pages (includes maps).

Contains footnotes (page 32).

Interstate Transfers Of Water: Many A Slip ‘Twixt The Cup And The Lip, Howard Holme

Colorado Water Issues and Options: The 90's and Beyond: Toward Maximum Beneficial Use of Colorado's Water Resources (October 8)

44 pages (includes maps and tables).

Contains 6 pages of footnotes.

Engineering And Hydrologic Issues In Changing Water Uses, Leonard Rice

Colorado Water Issues and Options: The 90's and Beyond: Toward Maximum Beneficial Use of Colorado's Water Resources (October 8)

26 pages (includes maps, charts and illustrations).

Contains references (page 18).

Voluntary Approaches To Basinwide Water Management, Neil S. Grigg

Colorado Water Issues and Options: The 90's and Beyond: Toward Maximum Beneficial Use of Colorado's Water Resources (October 8)

13 pages (includes illustration).

Contains references (page 11).

Factors Affecting Colorado’S Water Future: Summary Of Results Of Survey Conducted April 1985, Lawrence J. Macdonnell

Colorado Water Issues and Options: The 90's and Beyond: Toward Maximum Beneficial Use of Colorado's Water Resources (October 8)

7 pages.

Nontributary Ground Water: A Continuing Dilemma, William A. Paddock

Colorado Water Issues and Options: The 90's and Beyond: Toward Maximum Beneficial Use of Colorado's Water Resources (October 8)

47 pages.

Contains 2 pages of footnotes.

Wasted Water: The Problems And Promise Of Improving Efficiency Under Western Water Law, Steven J. Shupe

Colorado Water Issues and Options: The 90's and Beyond: Toward Maximum Beneficial Use of Colorado's Water Resources (October 8)

61 pages.

Includes footnotes (pages 49-56).

Administering Colorado’S Water: A Critique Of The Present Approach, Clyde O. Martz, Bennett W. Raley

Colorado Water Issues and Options: The 90's and Beyond: Toward Maximum Beneficial Use of Colorado's Water Resources (October 8)

41 pages.

Contains footnotes.

Agenda: Colorado Water Issues And Options: The 90'S And Beyond: Toward Maximum Beneficial Use Of Colorado's Water Resources, University Of Colorado Boulder. Natural Resources Law Center, Colorado Water Resources Research Institute. Cooperative Extension Service

Colorado Water Issues and Options: The 90's and Beyond: Toward Maximum Beneficial Use of Colorado's Water Resources (October 8)

Presented by Natural Resources Law Center, University of Colorado School of Law and Cooperative Extension Service, Colorado Water Resources Research Institute, Colorado State University.

Conference organizers and/or speakers included University of Colorado School of Law professors Lawrence J. MacDonnell, David H. Getches and Stephen F. Williams.

The conference theme is "Toward Maximum Beneficial Use of Colorado's Water Resources." The purpose of the conference is to provide a forum for public discussion of Colorado's system of water law and administration and to make recommendations for future action.

A Market-Based Approach To Water Rights: Evaluating Colorado’S System, Stephen F. Williams

Colorado Water Issues and Options: The 90's and Beyond: Toward Maximum Beneficial Use of Colorado's Water Resources (October 8)

33 pages.

Contains footnotes.

Meeting Colorado’S Water Requirements: An Overview Of The Issues, David H. Getches

Colorado Water Issues and Options: The 90's and Beyond: Toward Maximum Beneficial Use of Colorado's Water Resources (October 8)

43 pages (includes tables and map).

Includes 3 pages of footnotes.

Fall Application Of Fertilizer, Kenneth L. Wells

Soil Science News and Views

Fall application of fertilizer offers the advantages of (1) getting a job done which can delay early spring planting, (2) being able to get over fields when they are usually drier and less likely to compact, and (3) more often getting a price break from fertilizer dealers. Several crop-related advantages also apply and are discussed below. In terms of nutrients which can be fall applied, phosphate and potash are well adapted, Both these nutrients react strongly enough with soil to resist overwinter leaching. and the requirements for next year's production can safely be applied in the fall. Fall use of …

Seismic Modelling And Paleoceanography At Dsdp Site 574, Larry A. Mayer, Tom H. Shipley, Fritz Theyer, Roy H. Wilkens, Edward L. Winterer

Affiliate Scholarship

The analysis of high-resolution watergun seismic profiles collected in support of DSDP Leg 85 drilling reveals sev eral major, regionally traceable reflectors that can be correlated over more than 360,000 km2 in the central equatorial Pacific. Synthetic seismograms generated from shipboard physical property measurements (carefully corrected to in situ values) for DSDP Site 574 show excellent agreement with the field records; the agreement suggests that the traveltime to-depth conversion is accurate and permits the precise (± 5 m) location of reflectors in the cored section. The reflectors can be dated (±0.5 Ma) as follows: Orange, 21.5 to 22.5 Ma; Yellow, …

Conodont Biostratigraphy Of The Cambrian-Ordovician Boundary Interval In The Northern Shenandoah Valley Of Virginia, U.S.A., Randall C. Orndorff

OES Theses and Dissertations

Conodonts collected from two measured sections in the northern Shenandoah Valley of Virginia indicate that locally the Cambrian-Ordovician boundary is within the upper part of the Conococheague Formation and that the Conococheague-Stonehenge formational contact as defined in this study, is diachronous in relation to the boundary. Using the generally accepted definition of the CambrianOrdovician boundary as at the base of the trilobite Missisguoia Zone or within the conodont Hirsutodontus hirsutus Subzone of the Cordylodus proavus Zone, it is found here that the boundary is 230 ft (70 m) below the formational contact at the Narrow Passage Creek section. Several North …

Lineament Analysis And Tectonic Interpretation For The Central Tharsis Region, Mars, Robert C. Anderson

OES Theses and Dissertations

Lineament studies conducted for the Central Tharsis Region of Mars (JOON and JOOS latitude; 450w to 157.50W longitude) indicate two major events controlled the formation of the Tharsis Dome: 1) a pre-Tharsis fracture system consisting of North-West (3150) trending fractures; and 2) a Tharsian fracture system containing North-South (355°) and East-West (275°) trending fractures. The North-West (3150) trending fractures represent a crustal weakness zone which controlled the early formation of the Tharsis Dome. Analytical studies suggest four centers of uplift: 1) 6°N, 124°W; 2) 0.5°N, 114°W; 3) 5°S, 105°W; and 4) 7°S, 104°W. Each of these uplifting centers is associated …