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A Geochemical Reconnaissance Of Puerto Rican Beach Sands, Louis Meinecke Iii

Masters Theses

"Twenty-four beach sand samples from the island of Puerto Rico were collected in 1964 by Dr. Ernst Bolter as part of a radiometric survey conducted by him. These samples were given to the author in 1969 for chemical analysis.

The purpose of this investigation was to conduct a geochemical reconnaissance study of the beach sands in order to determine the geochemical background and possible anomalies. This information could aid in offshore mineral exploration and source area determination.

This thesis presents the results of a quantitative chemical analysis for copper, lead, zinc, iron, manganese, aluminum, sodium, potassium, calcium, magnesium, and strontium …

A Report On The Condition Of The Gascoyne Catchment, D G. Wilcox, E A. Mckinnon

Resource management technical reports

Severe flooding in Carnarvon followed heavy rains on the Gascoyne Catchment in February 1961. The flooding and erosion were extensive enough to suggest that run-off from the catchment was excessive. Lightfoot (1961)* reported that excess run-off was due to degradation of the catchment area. This report will describe the catchment area in terms of the degradation of its rangeland and its susceptibility to erosion.

The Stratigraphy And Economic Potential Of Permo-Pennsylvanian Strata In Southwestern North Dakota, Harold C. Ziebarth

Theses and Dissertations

This study of the Fermo-Pennsylvanian Minnelusa Group in North Dakota was designed to clarify the stratigraphy, illustrate association of depositional environments, and to relate the geologic history and economic potential of these strata.

The Minnelusa Group is defined here to include strata above the unconformity on the Madison and Big Snowy Groups and below the Opeche Formation. The Minnelusa Group in North Dakota contains the Tyler, Alaska Bench, Amsden and Broom Creek Formations. The Amsden has been divided into three marker defined lithozones designated, in ascending order, Medora, Dickinson, and Bismarck.

Drill and core samples were examined and described interpretively …

Statewide Precipitation And Discharge Of Platte River Above Ashland, Bryce B. Pease

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Summary Of Trial Results 1972 (February 1973), N. R. Mckeown

Experimental Summaries - Plant Research

1.0.0. Trials in Progress During 1972 observations were made on 16 small plot legume species trials and 11 grazing trials. In 1973 the small plot trials will be reduced to 10. This report summarizes the results from the grazing trials under the following headings:- 2.0.0. Seasonal conditions 3.0.0. Grazing experiments 3.1.0. 68MO23 - Legume grazing management trial, West Moora 3.2.0. 71LG17 - Comparison of production from Cyprus Medic and volunteer pasture 3.3.0. Comparison of production from tornafield medic,serradella and subterranean clover 3.3.1. 70ME2 - Walgoolan 3.3.2. 71WH13 - Wongan Hills 3.3.3. 69MO17 - Watheroo 3.3.4. 69LG24 - Lake Grace 3.4.0. …

Long Term Rotation Trials, I C. Rowland

Experimental Summaries - Plant Research

LONG TERM ROTATION TRIALS The results shown are the yield of grain harvested from crops grown under various rotations of pasture ley. W56H, 66M29, 67N4, 67BA6, 68E5, 68SG5, 69GE20

Late Paleozoic Trilobites From Southeastern Nebraska, R. K. Pabian, J. A. Fagerstrom

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Interbasin Water Transfers And Groundwater Regulation In Nebraska, D. D. Axthelm, V. H. Dreeszen, C. A. Lewis

Conservation and Survey Division: Faculty and Staff Publications

On November 29, 1971, the Hamilton County Ground Water Con·­servation District sponsored a meeting on groundwater management and regulation. The meeting was held at Aurora, Nebraska, and was designed for irrigators from groundwater conservation dis­tricts and county irrigation associations. Various men from state and federal agencies spoke about a variety of problems that a.re related to groundwater management. Two of the talks that were presented at the meeting are reproduced here, as is a discussion of the rules and regulations that relate to the use of groundwater in the state of Nebraska.

Nebraska Groundwater Level (Decline & Rise), 1972

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Location Of Registered Irrigation Wells In Nebraska As Of 1972

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Cass County, Weeping Water, R. K. Pabian

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Septic Tank Nutrients In Groundwater Entering Lake Sallie, Minnesota, David Robert Lee

Theses and Dissertations

The nutrient contribution of septic tanks to a lake was evaluated at Lake Sallie, in glacial outwash terrain of northwestern Minnesota. Groundwater entering the lake was collected by covering 0.258 m2 of lake bed with a bottomless cylinder vented to deflated plastic bag. Inflow velocity ranged from 0.01 to 2.5 micrometers per-second along 30% of the lakeshore. Groundwater inflow along an 800 m segment of shore amounted to 4.50 x 105 m3/year, and was uniformly distributed along the shore, but decreased exponentially away from shore.

Effluent from a heavily-used lakeside septic tank fanned out along the surface of the water …

The Impact Of Kaiser Bauxite Company On Western St. Ann Parish, Jamaica, Shirley A. Anderson Hallaron

Masters Theses

No abstract provided.

Squillites Spinosus (Syncarida, Malacostraca) And A New Unnamed Crustacean From The Mississippian Of Central Montana, Joan Matthews Rumore

Masters Theses

A Mississippian syncarid from the Heath shale, Squillites spinosus Scott, 1938, is redescribed and a discussion of some aspects of Syncarid phylogeny is given. Modern Syncarid biogeographical distribution is discussed and an analysis of these zoogeographical patterns is provided. A strange animal, Crustacea (incerta sedis) from the Heath shale is described in as far as is possible.

In 1971, Dr. Richard Lund of the University of Pittsburgh while searching for fossil fish in the Upper Mississippian Heath Shale of Montana found the associated remains of fossil crustaceans. Two locations were involved, T14 N R20E sec. 28, Fergus County, Montana, 2 …

Thorium And Uranium Determination Of Plutonio Rocks In The St. Francois Mts. Area, William Eggemeyer

Senior Honors Papers / Undergraduate Theses

No abstract provided.

Geochemical Anomalies In The Igneous Wall Rock At Mayflower Mine, Park City District, Utah, Zuhair Al-Shaieb

Doctoral Dissertations

"Approximately 500 samples were collected from the igneous wall rock of the Mayflower Mine, Park City District, Utah. The mine is the sixth largest gold producer in the United States. The samples were analyzed for copper lead, zinc silver, manganese, sodium, potassium, calcium, magnesium and iron by atomic absorption spectrophotometry. Gold was determined by neutron activation analysis, silicon and sulfur by x-ray fluorescence spectrometery. The calculation of the mineral norm from the chemical analysis showed the wall rock to be of granodioritic composition. A study of selected vein samples indicates that the copper, silver and gold content in the veins …

A Numerical, Time Domain Solution For The Response Of A Gimbal Supported Gyro, Floyd Stanley Hall

Doctoral Dissertations

"This paper develops an algorithm to generate a numerical solution for the response of a gimbal supported gyro to arbitrary forcing functions and base motion, and includes the normal parasitic effects of bearing friction, viscous pivot damping, and pivot spring constants. There are relatively few restrictions on gyro and gimbal structure geometry. Solution accuracy is limited only by the computing machine accuracy; the algorithm being an explicit function of the input data. The algorithm is fast and requires only a moderate amount of computer memory"--Abstract, page ii.

The Average Dissipation Curve Of An Attenuative Layered Earth Medium, Joong Hee Chun

Doctoral Dissertations

"A feasible method of estimating the attenuative properties of a layered earth medium from a reflection seismogram has been developed. An average attenuation factor of n layers in the least squares sense is designated as ß and its usefulness in real applications is investigated. Techniques of extracting dissipation factors from both noise free and noisy reflection seismic traces are discussed. In order to describe the change of the factors with an increase of depth, an average dissipation curve the form of which is similar to the average velocity of layered medium is also introduced. Both the ß and the average …

Stratigraphy, Genesis, And Economic Potential Of The Southern Part Of The Florida Land-Pebble Phosphate Field, Dean Stanley Clark

Doctoral Dissertations

"The important and highly productive Florida land-pebble phosphate field is located in west central peninsular Florida in portions of Hillsborough, Polk, Hardee, and Manatee counties. The Pine Level phosphate area, described in detail in this report, is south of the previously known and mined deposits and occurs in portions of Manatee, Sarasota, and De Soto counties. Results of the current geologic study of the Pine Level phosphate deposit and the evaluation of the overall potential of this southern part of the land-pebble field are presented.

The entire southern part of the phosphate field is underlain by more than 15,000 feet …

The Mio-Eugeosynclinal Thrust Interface And Related Petroleum Implications In The Sason-Baykan Area, Southeast Turkey, Ismail Özkaya

Doctoral Dissertations

"A detailed investigation of the stratigraphy, structure and petroleum geology of the Sason-Baykan region in 600 square km area of the thrust belt of southeast Turkey was completed at a scale 1: 25 000. Geosynclinal sediments within the area were redated.

Results of field study indicate a massive plate of metamorphic rocks and crystalline limestones was thrust southward over geosynclinals sediments. These in turn were thrust over the southern marginal basin deposits. A stratigraphic sequence of the allochthonous geosynclinals sediments was reconstructed and correlated with the autochthonous Tertiary section. Contrary to earlier views the allochthonous sediments and accompanying igneous rocks …

Wall Rock Geochemistry Of The Chester Vein, Sunshine Mine, Kellogg, Idaho, Nicholas Howard Tibbs

Doctoral Dissertations

"The Chester vein has been the major source of ore from the Sunshine mine, largest single producer of silver in the world. 425 samples of quartzite and argillite wall rocks were collected in 13 traverses across this vein on the 4400, 4600, and 4800 mining levels. These samples were analyzed for aluminum, magnesium, calcium, sodium, potassium, manganese, iron, lead, copper, and zinc by atomic absorption spectroscopy, and for silicon and sulfur by x-ray emission spectroscopy. Element distribution plots, linear correlation coefficient matrices, varimax factor analysis, and cluster analysis were employed to determine the geochemical processes that occurred in the wall …

The Scattering Of Elastic Waves By Void Cavities, Jerry Lee Davis

Doctoral Dissertations

"Elastodynamic multipole theory, the theory of least squares, and the theory of integral representation of solutions are employed in solving certain problems involving an elastic solid containing a source and a scatterer. Both the source and scatterer are of finite geometrical extent; they occupy non-intersecting regions. The source is separable, i.e., its mathematical specification consists of an arbitrary vector function of position multiplied by a time function, which is further assumed to be a sinusoid. The scatterer emphasized is a finite void cavity of arbitrary shape; however, scatterers composed of rigid material may also be treated. The calculation of a …

Trend Surface Analysis As An Aid In Exploration For Mississippi Valley Type Ore Deposits, John Siegfried Trapp

Doctoral Dissertations

"The conditions necessary for emplacement of Mississippi Valley-type mineral deposits can be expressed using mathematical symbols as a function of the pre-depositional topography of the host formation and post-depositional structure. These conditions can be observed and analyzed in the Missouri region from residual maps of trend surface analysis of the Precambrian surface. In areas where the topography prior to deposition of the ore bearing horizon has been strongly altered by the deposition of the basal Paleozoic formation the Lamotte Formation residual maps from trend surface analysis of the top of the Lamotte better illustrate these conditions. The Lamotte Formation in …

Applied Geology Of The Bismarck-Mandan Area, North Dakota, Gerald H. Groenewold

Theses and Dissertations

The Bismarck-Mandan area includes about 350 square miles located along both sides of' the Missouri River in south-central North Dakota. The area can be divided into two major physiographic divisions: the broad Missouri River floodplain and the nearly flat uplands which are dissected by minor streams. Geologic units in the area include Upper Cretaceous and lower Tertiary sandstone, siltstone, and shale and Quaternary sand, silt, clay, and gravel.

Expansion of residential areas around the cities of Bismarck and Mandan results in conflicts in land-use between agricultural, urban, and resource development. This study consists of detailed geologic maps and a series …

Le Cinquantenaire Du Premier Institut De Spéléologie Du Monde, Traian Orghidan

International Journal of Speleology

Description of the activities carried out by the first speleological institute of the world, the Institutul de Spéologie “Emil Racovitza”, founded in 1920 at Cluj in Romania.

Deux Stenasellidae Cavernicoles Nouveaux De L'Amerique Centrale: Mexistenasellus Parzefalli N. Sp. Et Mexistenasellus Wilkensi N. Sp. (Crustacea Isopoda Asellota), Guy Magniez

International Journal of Speleology

Description of the females of two new species of the family Stenasellidae (anophthalmous and unpigmented Asellota from underground waters). They were found in a little cave of San-Luis Potosi state (Mexico).

Un Aselle Cavernicole D'Espagne Méridionale: Proasellus Solanasi N.Sp. (Crustacea, Isopoda, Asellota), Jean-Paul Henry, Guy Magniez

International Journal of Speleology

Description of a new, unpigmented and eyeless species of the genus Proasellus Dudich, from an underground stream in the province of Malaga (Southern Spain). It belongs to the phyletic line which gave rise to the modem epigean water-slater Proasellus rneridianus (Racovitza).

La Migration Des Trichoptères Cavernicoles. Mise En Évidence Par Piégeage Lumineux, Yvette Bouvet

International Journal of Speleology

The Trichoptera from the group “Stenophylax” are frequent in caves. Until now, following Jeannel’s thought (1926), most authors believed that these animals were found in caves by hazard and were doomed to perish in them. With the use of a light trap it is now demonstrated that cavernicolous Trichoptera not only stay in caves during the entire summer, but also that during autumn (September-October) they leave the caves to lay their eggs in the nearby rivers.

Une Nouvelle Espèce Africaine Du Genre Stenasellus (Crustacea Isopoda Asellota) Du Bassin Du Niger, J. A. Birstein

International Journal of Speleology

The representatives of the genus Stenasellus (sensu lato) in Africa have been previously known from Cote d’lvoire, bassin of the Congo and Somali. The new species of this genus was collected from the well in the town Sicascau (Mali). This species differs from all others in the structure of the carpopodites of pereopods II-IV which are enlarged and armed with multiple curved spines. This character shows a distinct sexual dimorphism. In all other features St. laticarpus sp.n. belongs to the group of St. gjorgjevici Rac. and shows the closest resemblance to St. africanus Monod. It is now preferable …

A Propos Du Stenasellus Laticarpus Birstein (Crustacea Isopoda Asellota), Guy Magniez

International Journal of Speleology

The species Stenasellus laticarpus Birstein is closely related to three west-African Stenasellidae, forming the genus Magniezia Lanza. It belongs to the same genus: Stenasellus laticarpus = Magniezia laticarpa (Birstein).