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The Planimetric Geometry Of Symmetric River Meanders, Ruth Defries

Senior Honors Papers / Undergraduate Theses

No abstract provided.

Nitrogen Fertilization Studies In Dryland Winter Wheat And Potential Nitrogen Losses From The Soil At The Blue Creek Experimental Station In Northern Utah, Subhawat Intalap

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study compared the effects of nitrogen sources on the available inorganic soil nitrogen, nitrogen movement, nitrogen losses, and wheat yields when nitrogen fertilizers were applied to soil planted to dryland winter wheat at the Blue Creek Experimental Station in northern Utah.

In the fall 1973 soil samplings, the fertilizers producing the largest mineral nitrogen contents in the 0-30 cm soil depths were ammonium nitrate >ammonium sulfate > S-coated urea, when they were broadcast at the practical rate of 56 kg N/ha. There was no increase in the mineral nitrogen at the dee per depths in the fall or at any …

Structural Geology Of Cutler Dam Quadrangle And Northern Part Of Honeyville Quadrangle, Utah, Douglas A. Sprinkel

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The mapped area is located in the north-central part of Utah. The northern part of the mapped area is located in the Basin and Range province and the southern part of the mapped area is located in the Middle Rocky Mountain province. The north-south and east-west dimensions of the mapped area are 11.1 miles and 5.1 miles, respectively.

Paleozoic rocks are exposed in Bear River Narrows, in Cache Butte Divide, and in the Wellsville Mountains. Paleozoic strata, in Bear River Narrows, dip west. The Ordovician Swan Peak Formation crops out in the eastern part of Bear River Narrows. It is …

Some Aspects Of The Salinity Of Mancos Shale And Mancos Derived Soils, James C. Whitmore

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Initial studies to determine the thermodynamic solubility product (K_sp) of gypsum and CaCO₃ were conducted. The influence of different electrolyte salts at different concentrations upon the solubility of gypsum and CaCO₃ was then tested. Analytical data was utilized in conjunction with a computer to calculate the activity of CaCO₃ and gypsum, the ion pair concentration and the solubility product. Indifferent salts increased the solubility of gypsum and CaCO₃, and salts with a common ion decreased the solubility of gypsum and CaCO₃.

Lithium was found to be the dominant monovalent cation present …

A Model For Designing Surface Drainage Systems In Nearly Level Agricultural Lands, Rafael Maria Rojas

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The increasing demand for reclamation of periodically waterlogged nearly level agricultural lands in humid tropical areas and the hazard of soil deterioration and soil moisture balance disturbances by current land forming methods suggests the need for investigations of new surface drainage design procedures. This report presents a rainfall-runoff model for simulating hydrographs from ungaged agricultural plots. The model is based on routing procedures and utilizes common soil and hydrologic data. Tests made with several small agricultural water-sheds indicate that the model could be a useful tool in simulating surface drainage design.

Input data for the model consists of (a) rainfall …

Modeling Spring Wheat Production As Influenced By Climate And Irrigation, V. Philip Rasmussen Jr.

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A model has been developed that predicts spring wheat grain and dry matter yield. Preliminary tests show very favorable results when predicting grain yield in two different climatic regimes, one being a dryland and another being an irrigated area. The strengths of the model lie in its simplicity, relatively available input data, and low computer processing time cost. Weakness of the model stem from the assumptions that allow its simplicity. The basic assumption in the model is that grain and dry matter yield can be related to the ratio of actual to potential transpiration, computed for each of five phenological …

Irrigation Scheduling Program For Sugarcane, Terence L. Pearse

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

An estimate of potential evapotranspiration is acquired to implement an irrigation scheduling program. Four equations, which estimate potential evapotranspiration (evaporation) were evaluated for prediction of Class "A" Pan evaporation. The equations used were Penman's combination equation, the Jensen-Haise temperature and radiation equation, and two of the Christiansen-Hargreaves polynomial regression type equations. Measured and calculated radiation was used together with two values of albedo. Four years of daily climate data from Rhodesia was evaluated by general linear regression methods.

Despite the significant variations between the four annual regression lines of each equation, the use of confidence intervals indicate that the Penman …

Albedo Of The Earth's Surface -- A Comparison Of Measurements Taken On The Ground And From Flying Platforms, Frank D. Eaton

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The main objectives of this study were to develop the intricacies of reflected solar radiation from different natural surfaces and to show comparisons between values sensed in space of emergent radiation to ground values obtained from accounting for anisotropic reflection and estimating the effect of the intervening atmosphere. Thus, this study demonstrated that a prior knowledge of the angular distribution of reflected radiation allows determining the true hemispherical reflected radiation from a narrow field of view instrument such as found on a flying platform. Measurements for determining the indicatrices were made from a tower-mounted Nimbus MRIR and, in one case, …

Quaternary Geomorphic Features Of The Bear River Range, North-Central Utah, Jerome Vernon Degraff

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Bear River Range, in north-central Utah, contains a variety of geomorphic elements influenced by the geologic setting and events. Controlling factors of the geologic setting include: (1) a syncline (west) and an anticline with a crestal graben (east) within the part of the mountain range studied, and an adjacent graben valley along the west side of the range; and (2) bedrock of Precambrian and Paleozoic age in the core of the range, predominantly of shallow-marine carbonates and covered in the graben by shaly and conglomeratic rocks of early Cenozoic age, with fanglomerates and lake deposits of later Cenozoic age. …

The Geology Of The Castle Rock Area, Grant, Harney And Malheur Counties, Oregon, John David Wood

Dissertations and Theses

The geology of the Castle Rock area aids in the understanding of Cenozoic volcanic stratigraphy and structures in an area where these volcanic rocks thin near the margins of the pre-Tertiary basement rocks and structural trends are overlapping. The Castle Rock area is unique in several aspects and is important in understanding and interpreting the geology in adjacent regions which have all been studied, at least on a regional basis. Intrusive ash-flow bodies of the Dinner Creek Ash-Flow Tuff, well-exposed sections of complexly interstratified volcanic rocks and well-exposed faults, and of high amount of erosional relief are features which make …

Geology Of The Apache No. 2 Mining District Hidalgo County, New Mexico, Stephen L. Peterson

Earth and Planetary Sciences ETDs

The Apache Hills, 10 km south of Hachita, New Mexico are a WNW-trending series of low hills, approximately 12 km long.

The rocks range in age from Paleozoic to Holocene. Limestone and sandstone of the Lower Cretaceous U-Bar and Mojado Formations are overlain by a thrust plate of Paleozoic limestone. The Oligocene Chapo Formation (new name) overlies the thrust plate uncomformably. The Formation is over 1,700 m thick and ranges in composition from rhyolite to basalt. The sedimentary and volcanic rocks have been intruded by several igneous rock types, the most prominent of which is a stock of quartz monzonite …

Structural Geology Of The Northeast Quarter Of The Dutchman Butte Quadrangle, Southwest Oregon, Rauno K. Perttu

Dissertations and Theses

The northeast quarter of the Dutchman Butte quadrangle straddles the boundary of the Mesozoic Klamath Mountains province and the Tertiary Coast Range province. The boundary in this area is controlled by a major easttrending fault zone, herein named the Canyonville fault zone. Jurassic Rogue, Dothan, and Otter Point Formations have been offset right-laterally at least 40 kilometers. In latest Jurassic and early Cretaceous time, the fault zone formed the shoreline along which sediments of the Myrtle Group were deposited.

Movement on the Canyonville fault zone becale down-to-the-north in Eocene time forming the southern margin of the Eocene Coast Range basin. …

Ua12/2/19 Earth Week, Energy For Student Awareness

WKU Administration Documents

Newspaper created by the Energy for Student Awareness group regarding Earth Week and environmental issues.

Geology Newsletter- 1976, Department Of Geology

Geological and Environmental Sciences News

Vol. 1, No . 2

• Dear Department Alumni and Friends
• Graduate Students
• Geology Earth Science Club News
• This N' That

Control Of Clay Mineral Distribution By Estuarine Circulation, James River Estuary, Virginia, Jean-Pierre Feuillet

OES Theses and Dissertations

A study was performed on the clay minerals of the James River estuary, Virginia, to determine the predominant factors that influence clay mineral distribution in the estuary. The factors of differential settling, flocculation, and diagenesis show minor or no effects on distribution, while estuarine circulation exerts the strongest influence upon the clay mineral distribution.

There are two clay suites in the James River estuary. The upper James River clay suite is a kaolinite, dioctahedral vermiculite, and mixed-layer suite, with kaolinite being the major mineral. The lower Chesapeake Bay clay suite is an illite, chlorite, and montmorillonite suite, with illite being …

Dynamics And Sedimentology Of Inner Middle Ground - Nine Foot Shoal, Chesapeake Bay, Virginia, Mitchell Alan Granat

OES Theses and Dissertations

The historical, hydrodynamic, and sedimentological development of Inner Middle Ground - Nine Foot Shoal indicates that it is presently in quasi-equilibrium with mutually evasive ebb and flood tidal currents. Bathymetric comparisons among six surveys taken during the past 122 years depict development of the shoal from two linear sand bodies to its present double parabolic morphology. Circulation paths are proposed for each survey.

Information from eight current meter stations on and adjacent to Inner Middle Ground - Nine Foot Shoal were used to determine near-surface and near-bottom tidal current asymmetries and directions. The concepts of bathymetrically diverted currents and mutual …

Buffalo National River Ecosystems - Part Ii, R. E. Babcock, E. E. Dale, H. C. Macdonald, R. L. Meyer, D. G. Parker, E. B. Smith, K. F. Steele

Arkansas Water Resources Center Technical Reports

The priorities were established for the Buffalo National River Ecosystem Studies through meetings and correspondence with Mr. Roland Wauer and other personnel of the Office of Natural Sciences, Southwest Region of the National Park Service. These priorities were set forth in the appendix of contract no. CX 700050443 dated May 21, 1975.

Geology And Ore Deposits Of The Johnnie District, Nye County, Nevada, Stanley Wayne Ivosevic

UNLV Theses, Dissertations, Professional Papers, and Capstones

The Johnnie district, in the northwestern Spring Mountains, Nye County, Nevada, may have produced a little under 100,000 troy oz of gold, since the discovery of the district in 1890.

An approximately 13,000-ft-thick (4,000 m) section of east-dipping upper Precambrian through Middle Cambrian miogeosynclinal clastic and carbonate rocks is exposed in the district. The strata are, in order of decreasing age, the Johnnie Formation, Stirling Quartzite, Wood Canyon Formation, Zabriskie Quartzite, and Carrara and Bonanza King Formations. These are overlain by Cenozoic units which include and older unit and a younger unit of fanglomerate, the older containing a megabreccia deposit, …

Geology Of The Breitenbush Hot Springs Area, Cascade Range, Oregon, Clifford Michael Clayton

Dissertations and Theses

The Breitenbush Hot Springs area lies on the boundary of folded middle to late Tertiary Western Cascade rocks and younger High Cascade rocks. Within the mapped area the Western Cascade rocks are represented by four formations. The Detroit Beds, a sequence of interstratified tuffaceous sandstone, mudflow breccia, and tuff, is overlain unconformably by the Breitenbush Tuff. The Breitenbush Tuff consists of three units of welded pumice-rich crystal-vitric ash-flow tuffs interbedded with tuffaceous sedimentary rocks. The Outerson Formation unconformably overlies the Breitenbush Tuff and consists primarily of basaltic lava and breccia.

The Outerson Formation includes three localized members: a basal, glassy, …

Water Resources Of Pierce County, Nebraska, Robert E. Brogden, Richard A. Engberg

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Biology Of Nematodes In Desert Ecosystems, D. W. Freckman, R. Mankau

Memorandum

No abstract provided.

Responses And Interactions In Desert Plants As Influenced By Irrigation And Nitrogen Application, R. B. Hunter, E. M. Romney, A. Wallace, H. O. Hill, T. A. Ackerman, J. E. Kinnear

Memorandum

No abstract provided.

Estimation Of Functional Root Biomass And Root And Shoot Response Of Atriplex Confertifolia To Summer Rain, K. C. Hodgkinson, P. S. Johnson, B. E. Norton

Memorandum

No abstract provided.

Demographic Studies Of Sagebrush Insects As Functions Of Various Environmental Factors, T. H. Hsiao, A. K. Temte

Memorandum

No abstract provided.

The Ants Of Arizona: An Ecological Study Of Ants In The Sonoran Desert, C. Gaspar, F. G. Werner

Memorandum

No abstract provided.

Seasonal Use Of Soil Moisture By Larrea Tridentata And Ambrosia Deltoidea, D. R. Cable

Memorandum

No abstract provided.

Plant Demographic Studies Of Desert Annual Communities In Northern Utah Dominated By Non-Native Weedy Species, D. R. Duba, B. E. Norton

Memorandum

No abstract provided.

Jornada Validation Site Report, W. G. Whitford

Memorandum

No abstract provided.

Nitrogen And Phosphorus Constraints On Primary Production In The Great Basin Desert, J. J. Jurinak, D. W. James, A. Van Luik

Memorandum

No abstract provided.

Growth Of Perennials In Response To Varying Moisture And Defoliation Regimes, J. A. Macmahon, B. E. Norton, B. M. Capen

Memorandum

No abstract provided.