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The Principal's Role In The Development Of Teacher Leadership: A Case Study, Carla Jean Steinforth Jan 1989

The Principal's Role In The Development Of Teacher Leadership: A Case Study, Carla Jean Steinforth

UNLV Retrospective Theses & Dissertations

This study explored the principal's role in the development of teacher leadership in a school in the process of change. The single, case study was conducted in a large urban elementary school, grades K-5, within a major, western metropolitan school district. The nature of teacher leadership was examined along with the actions, behaviors, and thoughts of the principal which fostered the development of teacher leadership. Change process activities that were influenced or facilitated by teacher leadership were also studied; Primary sources of data collection included field observations, document reviews, and interviews conducted on a regular basis for a period of …

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Ecological And Genetic Aspects Of The Population Biology Of The Littoral Rotifer Euchlanis Dilatata, Elizabeth Jensen Walsh Jan 1989

Ecological And Genetic Aspects Of The Population Biology Of The Littoral Rotifer Euchlanis Dilatata, Elizabeth Jensen Walsh

UNLV Retrospective Theses & Dissertations

Littoral rotifers are associated with vegetation and thus live in highly structured habitats. This structural complexity increases the possibilities of forming local subpopulations differing in (a) plant substrate used, (b) biotic interactions, and (c) genetic structure. I explore some of these topics in populations of the littoral rotifer Euchlanis dilatata; I investigated several aspects of egg-laying behavior in 3 clones of E. dilatata. Individuals lay their eggs randomly within culture dishes in the absence of substrate, while eggs laid in the presence of an artificial substrate are deposited in clumps by 2 of the 3 clones. When given a choice …

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The Retention Power Of Pre- And Post-Matriculated First Semester Student Perspectives, Anthony Paul Pellegrini Jan 1989

The Retention Power Of Pre- And Post-Matriculated First Semester Student Perspectives, Anthony Paul Pellegrini

UNLV Retrospective Theses & Dissertations

This research analyzed the first semester perspectives of university freshmen at the University of Nevada, Las Vegas during the Fall semester of 1991. This study employed the use of inferential and descriptive statistics on pre- and post-matriculated attitudes and perspectives of a power analyzed, randomly selected sample of freshmen students; Summary of data and conclusions. (1) Some respondents were pleased with their visits to the university while they were still in high school. They perceived that the community was behind the university and that there were strong ties between the two entities. Comments regarding the positive appearance of the University …

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An Investigation Of Personalities Of Superintendents From Selected Public School Districts Within The Western United States, Craig S Babcock Jan 1989

An Investigation Of Personalities Of Superintendents From Selected Public School Districts Within The Western United States, Craig S Babcock

UNLV Retrospective Theses & Dissertations

The purpose of this study was to establish 16PF personality profiles for superintendents of large and small public school districts from eleven western states, and to determine the significant differences, if any, between the profiles; Sixteen null hypotheses were formulated based on the sixteen primary personality factors of the 16PF. The first of these hypotheses was: There was no significant difference between the mean score of superintendents from large public school districts and the mean score of superintendents from small public school districts on Factor A, Social Orientation, of the 16PF a significance level of.05. The remaining fifteen hypotheses were …

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Restricted Reconnaissance: The History And Archaeology Of S M Wheeler In Nye County, Nevada, Diane Lynne Winslow Jan 1989

Restricted Reconnaissance: The History And Archaeology Of S M Wheeler In Nye County, Nevada, Diane Lynne Winslow

UNLV Retrospective Theses & Dissertations

Restricted Reconnaissance: The History and Archaeology of S. M. Wheeler in Nye County, Nevada reconstructs the archaeological career and life of one of Nevada's first archaeologists. Specifically, during the months of February and May of 1940, Wheeler worked in Nye County, Nevada. He conducted survey and collections from 12 archaeological sites which are now within the environs of the Nevada Test Site. The field notes and collections from this fieldwork were analyzed by the author in 1995. In addition, the author revisited the archaeological sites and analyzed the artifact assemblages collected by Wheeler. The results of the analysis and fieldwork …

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The Limits To Openness: The Impact Of Glasnost' And Perestroika On The Baltic Republics, Susan Faye Davis Jan 1989

The Limits To Openness: The Impact Of Glasnost' And Perestroika On The Baltic Republics, Susan Faye Davis

UNLV Retrospective Theses & Dissertations

The Baltic Republics occupy a unique position within the Soviet Union. They are the most Western, the most industrialized, the most efficient and the most productive of all Soviet republics. As such, they epitomize the goals of Gorbachev's reforms. If the leadership were to crack down on the current manifestations of nationalistic unrest and on the recently established quasi-political popular organizations in the Baltic, the result would be a chilling effect on the entire reform process. Therefore, the Baltic Republics, as long as their goal remains the support of perestroika, are being allowed to advance previously unacceptable demands including autonomy …

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Laboratory Investigation Of A Method For Determining In Situ Saturated Hydraulic Conductivity, Joel Stacey Hayworth Jan 1989

Laboratory Investigation Of A Method For Determining In Situ Saturated Hydraulic Conductivity, Joel Stacey Hayworth

UNLV Retrospective Theses & Dissertations

A study was conducted to determine the applicability of a method for determining in situ saturated hydraulic conductivity in porous media. This method requires an accurate measurement of the horizontal port water speed through a section of a borehole packed with a porous material of known hydraulic conductivity. Analytical expressions describing the theoretical basis for the method were investigated, as was the sensitivity of these expressions to varied parameters; Experiments were designed and performed in an attempt to determine if the theory could be successfully applied in a laboratory setting. These experiments were conducted in a large flowchamber which simulates …

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The Comparison Of Physical Fitness Between Type Ii Diabetics And The Apparently Healthy Population, Joan Kathleen Macdonald Jan 1989

The Comparison Of Physical Fitness Between Type Ii Diabetics And The Apparently Healthy Population, Joan Kathleen Macdonald

UNLV Retrospective Theses & Dissertations

Physical fitness was measured in a Type II diabetic population and compared to apparently healthy men and women. Eighty-eight female Type II diabetics, aged over 40 years were compared to 2,008 normal females of the same age, and 138 male Type II diabetics were similarly compared to 2,271 normal males. The National YMCA physical fitness test battery was used to measure fitness which consisted of flexibility, muscular strength and endurance, cardiorespiratory fitness, body composition, and resting values of heart rate and blood pressure. Differences in the mean values of each parameter were tested for significance (p {dollar}<{dollar} 0.05) using the Z x test. Although significant differences were found in VO2 max and PWC max in both males and females, the results were conflicting. Since significant differences in most fitness variables existed, it must be assumed that Type II diabetics do not belong to the apparently healthy population fitness wise, therefore, norm tables should be developed for Type II diabetics. (Abstract shortened with permission of author.).

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Structural Analysis And Design Of A Flexible Three-Link Hydraulically-Actuated Robotic Arm, Tarek Mitri Bannoura Jan 1989

Structural Analysis And Design Of A Flexible Three-Link Hydraulically-Actuated Robotic Arm, Tarek Mitri Bannoura

UNLV Retrospective Theses & Dissertations

The structural design of a flexible three-link hydraulically activated robotic mechanism is presented. Static and quasi dynamic, three-dimensional analysis of the robotic mechanism is shown. Force and deflection equations are derived for the robotic mechanism and the finite element analysis is used to model its dynamic behavior and to study the fundamental 3-D bending and twisting frequencies of the arm as it reaches various positions inside the workspace. Using beam-column theory and finite element method, the design of a flexible three-link robotic mechanism is shown. The flexibility of the arm is set so that the total deflection of the arm …

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Analysis Of Acoustics In Heating, Ventilation And Air Conditioning Systems, Jeffry Michael Bledsoe Jan 1989

Analysis Of Acoustics In Heating, Ventilation And Air Conditioning Systems, Jeffry Michael Bledsoe

UNLV Retrospective Theses & Dissertations

The analysis of acoustics in heating, ventilation and air conditioning systems is presented. The objective of this ASHRAE funded (ASHRAE TRP 556) project was to present the HVAC designer with a set of algorithms for determining the acoustical characteristics of heating, ventilation and air conditioning systems that are useful and reliable. All algorithms are based on current verifiable published and available unpublished test results. (Abstract shortened with permission of author.).

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Field Comparison Of Groundwater Sampling Methods, Ronald Paul Blegen Jan 1989

Field Comparison Of Groundwater Sampling Methods, Ronald Paul Blegen

UNLV Retrospective Theses & Dissertations

Most ground-water sampling methods require the investigator to purge a large quantity of stagnant water from a well prior to collecting a sample. The use of in situ ground-water sampling devices which minimize or eliminate the need for purging would help to alleviate these problems. In this field comparison study, the performances of seven ground-water sampling devices, including two in situ sampling systems, were evaluated to determine if these devices would yield accurate, precise, and representative data. The sampling devices included a bladder pump, a bladder pump below an inflatable packer, a bailer, the Westbay{dollar}\sp\circler{dollar} Mp System, two in situ …

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The Relationship Between Suicidal Phenomena And Depression, Dysfunctional Attitudes, Irrational Beliefs, And Hopelessness, Shonna L Erickson Jan 1989

The Relationship Between Suicidal Phenomena And Depression, Dysfunctional Attitudes, Irrational Beliefs, And Hopelessness, Shonna L Erickson

UNLV Retrospective Theses & Dissertations

The study of depression and suicidal phenomena among adolescents has lagged behind that of adults. Very few studies have examined attitudes and beliefs of relevance to cognitive therapy among suicidal adolescents. In this study 40 incarcerated juvenile females were administered the Beck Depression Inventory (BDI), the Dysfunctional Attitude Scale (DAS), the Irrational Beliefs Test (IBT), and the Hopelessness Scale (HS). A stepwise discriminant analysis identified seven variables which significantly differentiated the suicidal from the nonsuicidal group. These variables were number of previous attempts, the HS, DAS, subscales 4, 5, and 8 of the IBT (Frustration reactive, emotional irresponsibility, and dependency, …

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Maximum Oxygen Uptake Predicted From Submaximal Tests, Anne Renee Lindsay Jan 1989

Maximum Oxygen Uptake Predicted From Submaximal Tests, Anne Renee Lindsay

UNLV Retrospective Theses & Dissertations

Two widely used tests for predicting max VO2 are the Astrand-Ryhming Nomogram (ARN) and the National YMCA bicycle ergometer test. While both tests predict max VO2 from heart rate and workload, the ARN also uses submaximal oxygen uptake as a parameter; The purpose of this study was to determine which of the 3 types of exercises used with the Astrand-Ryhming nomogram predicted max VO2 most accurately; Thirty subject's between the ages of 18 and 35 performed maximally on a treadmill and bicycle ergometer. Oxygen uptake and heart rate were measured at both maximal and submaximal workloads using open circuit spirometry …

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Development Of A Tool To Investigate Factors Related To Job Satisfaction In Geriatric Nurses, Mary-Jane Snyder Araldi Jan 1989

Development Of A Tool To Investigate Factors Related To Job Satisfaction In Geriatric Nurses, Mary-Jane Snyder Araldi

UNLV Retrospective Theses & Dissertations

The purpose of this study was to develop and assess a three part semantic differential instrument to measure job satisfaction of geriatric nurses based on an adaptation of Dorothy Johnson's conceptual framework. A sample of 306 geriatric nurses who were members of the American Nurse's Association responded to a 4-page, mailed questionnaire (return rate 37%). The questionnaire developed consisted of four parts: Sociodemographic data, and three semantic differential scales assessing, Attitudes toward geriatric nursing, Attitudes toward the work environment, and Attitudes toward the administrator. Descriptive statistics were compiled for sociodemographic variables; Results of the regression analyses demonstrated that job satisfaction, …

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Comparison Of The Sodium Ion Channel Densities, The Water Flux Changes, And The Membrane Capacitance Changes In The Pelvic And Pectoral Skin Of The Toad, Bufo Woodhousei, Cathleen Ann Baker Jan 1989

Comparison Of The Sodium Ion Channel Densities, The Water Flux Changes, And The Membrane Capacitance Changes In The Pelvic And Pectoral Skin Of The Toad, Bufo Woodhousei, Cathleen Ann Baker

UNLV Retrospective Theses & Dissertations

The amphibian antidiuretic hormone arginine vasotocin (AVT) stimulated osmotic water flow (JH{dollar}\sb2{dollar}O) across isolated skin from the pelvic but not the pectoral region of the toad, Bufo woodhousei. The apical membrane capacitance (C{dollar}\sb{\rm a}{dollar}) of the cells in the stratum granulosum of neither skin region was changed by AVT treatment when an osmotic gradient was present across the tissue; Short circuit current (I{dollar}\sb{\rm sc}{dollar}) and the amiloride sensitive current (I{dollar}\sb{\rm Na\sp+}{dollar}) both increased significantly in the pelvic and in the pectoral skin after AVT treatment, but to a larger degree in the pelvic skin. If M is expressed as a …

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Survival Of Ice Nucleation-Active And Genetically Engineered Inactive Strains Of Pseudomonas Syringae, Mark P Buttner Jan 1989

Survival Of Ice Nucleation-Active And Genetically Engineered Inactive Strains Of Pseudomonas Syringae, Mark P Buttner

UNLV Retrospective Theses & Dissertations

The survival of ice nucleation-active (INA) and genetically engineered non-INA strains of Pseudomonas syringae was compared under starvation and freezing conditions. In starvation experiments, both strains displayed similar survival curves and recovery from starvation was nearly identical for the two strains. In freezing experiments, oat seedlings colonized by each strain were subjected to freezing temperatures. Populations of the INA strain increased 15-fold in the 18 hours after oat plants incurred frost damage at {dollar}-{dollar}5 and {dollar}-{dollar}12{dollar}\sp\circ{dollar}C. Plants colonized by the non-INA strain were undamaged at {dollar}-{dollar}5{dollar}\sp\circ{dollar}C and exhibited no changes in population size. As temperatures were lowered, plants colonized by …

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Petrogenesis Of Late Cenozoic Alkalic Basalt Near The Eastern Boundary Of The Basin-And-Range: Upper Grand Wash Trough, Arizona And Gold Butte, Nevada, Erin D Cole Jan 1989

Petrogenesis Of Late Cenozoic Alkalic Basalt Near The Eastern Boundary Of The Basin-And-Range: Upper Grand Wash Trough, Arizona And Gold Butte, Nevada, Erin D Cole

UNLV Retrospective Theses & Dissertations

Geochemical, isotopic, paleomagnetic, and geochronological studies of Late Miocene to Pliocene alkalic basalt in the upper Grand Wash Trough, Arizona and at Gold Butte, Nevada may place constraints on the petrogenetic history of the basalt and on the geometry of the crustal structures that may have served as conduits; Geochemical modelling suggests that type B basalt can be derived from independent batch melts of spinel peridotite with limited fractionation (5 to 9% olivine plus Fe-Ti oxide); The Sr, Nd and Pb isotopic data confirm the geochemical models and indicate that all three magma types are mantle derived; The restricted range …

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Drinking-Driving And Social Control: An Analysis Of Peer Intervention, Michael David Collins Jan 1989

Drinking-Driving And Social Control: An Analysis Of Peer Intervention, Michael David Collins

UNLV Retrospective Theses & Dissertations

The present study contends that legislative sanctions, regardless of severity, cannot sufficiently curb the drunken driver unless they are met with the concern of an equally sanctitive public (Formby and Smykla, 1984). The explicit goal of research presented here is to report the extent and power of peer sanction surrounding potential drinking and driving situations. This goal consists of the following components: (1) to discern whether individuals are at all inclined to attempt intervention in situations of potential drunken driving, and if so, to ascertain the types of intervention techniques attempted as well as intervention settings; (2) to determine which …

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Variable Structure And Ultimate Boundedness Control And Stabilization Of Flexible Robotic Systems, Perumal Jegan Nathan Jan 1989

Variable Structure And Ultimate Boundedness Control And Stabilization Of Flexible Robotic Systems, Perumal Jegan Nathan

UNLV Retrospective Theses & Dissertations

In this thesis we study the control of two link light weight elastic manipulator in the presence of uncertainty. The control of flexible robotic arm with uncertainty such as variable payload, joint angle frictional torque etc., is an interesting and important problem; Here we consider control of joint angles and stabilization of the flexible modes caused by the manuever of robotic arm by two methods. These are: (i) Variable Structure control and (ii) Nonlinear Ultimate Boundedness control. Nonlinear Ultimate Boundedness control is a continuous control wherein the joint angle tracking error is uniformly ultimately bounded in the closed-loop system; Analytical …

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Sampling Inner Experience In Adolescents, Lois Christina Monson Jan 1989

Sampling Inner Experience In Adolescents, Lois Christina Monson

UNLV Retrospective Theses & Dissertations

The inner experience of five adolescents, ages 12 through 14, has been investigated through an experience-sampling method that asked the subjects to describe in detail the inner experience that was ongoing at randomly sampled moments during their daily living. A beeper signaled the subject to freeze their inner experience, (i.e., thoughts, feelings, images, etc.) at the moment of the beep. Findings indicated, as had been found in previous research with adults, that adolescents had a variety of inner experience including Images, Inner Speech, Inner Hearing, and Feeling. Adolescents, unlike adults, reported the slow forming and fading of Images, leading to …

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Initial Deposition In The Sevier Foreland Basin Of Southern Nevada: Conglomerates Of The Cretaceous Willow Tank Formation, Clark County, Nevada, Julie Ann Reese Jan 1989

Initial Deposition In The Sevier Foreland Basin Of Southern Nevada: Conglomerates Of The Cretaceous Willow Tank Formation, Clark County, Nevada, Julie Ann Reese

UNLV Retrospective Theses & Dissertations

The basal conglomerate of the Willow Tank Formation is the initial foreland basin sediment that was derived from highlands created by the Sevier thrust belt and dispersed across an irregular surface of Jurassic Aztec Sandstone in southern Nevada. The conglomerate varies from 5.5 to 34.5 m in thickness and is composed of two compositionally distinct units. The lower conglomerate is composed of Precambrian and Ordovician metaquartz-arenites, and Triassic and Jurassic sedimentary clasts, and its sandstone interbeds and matrix are chert-arenite. This unit represents the initial uplift and erosion of the Gass Peak and William Tank thrusts. The predominance of Paleozoic …

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Measurement Of The Dependence Of The Averaged Internal Mode On The Scattering Vector And Of The First Internal Mode On The Concentration Of Polystyrene In Solution Using Photon Correlation Spectroscopy, Johannes Klaus Schaller Jan 1989

Measurement Of The Dependence Of The Averaged Internal Mode On The Scattering Vector And Of The First Internal Mode On The Concentration Of Polystyrene In Solution Using Photon Correlation Spectroscopy, Johannes Klaus Schaller

UNLV Retrospective Theses & Dissertations

A study of the internal behavior of polystyrene in toluene and cyclohexane was done using photon correlation spectroscopy. In the experiments laser light of two different wavelengths was scattered from local concentration fluctuations in the polymer and autocorrelation function was calculated; The autocorrelation function can be written as a sum of decaying exponentials. The center-of-mass mode with a decay constant Dq{dollar}\sp2{dollar} is contained in every mode. D is the polymer diffusion coefficient and can be measured in low angle light scattering experiments and q is the magnitude of the scattering vector. Thus this center-of-mass mode can be factored out of …

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Israel And The Occupied Territories: An Analysis Of The Israeli-Palestinian Conflict, Benjamin Wood Jan 1989

Israel And The Occupied Territories: An Analysis Of The Israeli-Palestinian Conflict, Benjamin Wood

UNLV Retrospective Theses & Dissertations

This thesis will consist of six chapters. An introductory chapter will explore various conflict theories and their relevance to the situation which exists in the occupied territories. Chapter two examines the historical dimensions of the West Bank problem by focusing on the Jordanian role in the West Bank prior to the Six Day War. In the third chapter, the present political conditions under the Israeli Military Government is discussed as well as the positions taken by the Labour Party, the Likud coalition and the smaller parties within Israel. The role of the P.L.O. and moderate Palestinian mayors within the occupied …

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Object-Oriented Data Modeling, Donald W Baltz Jan 1989

Object-Oriented Data Modeling, Donald W Baltz

UNLV Retrospective Theses & Dissertations

The object-oriented paradigm models local behavior, and to a lesser extent, the structure of a problem. Semantic data models describe structure and semantics. This thesis unifies the behavioral focus of the object-oriented paradigm with the structural and semantic focus of semantic data models. The approach contains expressive abstractions to model static and derived data, semantics, and behavior. The abstractions keep the data model closer to the problem domain, and can be translated into a relational (or other) implementation. The paper makes six contributions. First, a comprehensive set of data structuring abstractions are described. Second, the abstractions are compared to the …

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The Rehydration Behavior Of The Desert Toad, Bufo Punctatus, Dona Rae Brekke Jan 1989

The Rehydration Behavior Of The Desert Toad, Bufo Punctatus, Dona Rae Brekke

UNLV Retrospective Theses & Dissertations

The red spotted toads, (Bufo punctatus), demonstrate a "water absorption response" (WR) in which they aduct the hindlimbs and press the ventral skin to a moist surface. Associated with the WR, toads showed three characteristic behaviors: (a) moves, in which the toads would systematically move to adjacent regions of the moist surface to optimize water gain; (b) settles, in which a toad would laterally oscillate its body to maximize contact area when showing the WR; and (c) kicks, in which toads would rub adherent particles from the skin with the hind feet; Measurements of the capacitance of the ventral skin, …

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The Dynamic Response Of A Flexible Three-Link Robot Using Strain Gages, Lagrange Polynomials, Fourier Series, And The Finite Element Analysis, Robert Frank Marceau Jan 1989

The Dynamic Response Of A Flexible Three-Link Robot Using Strain Gages, Lagrange Polynomials, Fourier Series, And The Finite Element Analysis, Robert Frank Marceau

UNLV Retrospective Theses & Dissertations

This thesis presents theoretical and experimental methods for determining the static and dynamic response, in three dimensional space, of a flexible three-link robotic manipulator. The Links are designed to deform elastically under static and dynamic loads. Lagrange polynomials are derived to determine the defected shape of the robotic links. All coefficients of the Lagrange polynomials are functions of the elastic strain at three specific locations on each link. Strains are converted to voltage differentials and are read into a micro-computer through an A-to-D board system, where they are converted to digital strain values. Coefficients defining the damped response of the …

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Hydrogeology And Hydrogeochemistry Of The Spring Mountains, Clark County, Nevada, Ronald Lee Hershey Jan 1989

Hydrogeology And Hydrogeochemistry Of The Spring Mountains, Clark County, Nevada, Ronald Lee Hershey

UNLV Retrospective Theses & Dissertations

The Spring Mountains are the largest ground-water recharge area in southern Nevada and supply a significant amount of ground water to the Las Vegas' Pahrump, and Indian Springs Valleys; The high quality of ground water in the study area is controlled by the predominance of carbonate rock in the central portion of the mountain block. Modeling of {dollar}\delta\sp{13}{dollar}C in ground water suggest low P{dollar}\sb{\rm CO\sb2}{dollar} and enriched {dollar}\delta\sp{13}{dollar}C in soil, and open system conditions at high elevations. Analysis of {dollar}\sp{14}{dollar}C in ground water and geochemical modeling of ground water using PHREEQE and BALANCE suggest ground water from the Spring Mountain …

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Identifying Environmental Stressors Affecting Parents With An Infant In The Nicu, Donna Gaynelle Mattson Jan 1989

Identifying Environmental Stressors Affecting Parents With An Infant In The Nicu, Donna Gaynelle Mattson

UNLV Retrospective Theses & Dissertations

To discuss sources of stress for parents, a convenience sample of 47 parents of infants admitted to a NICU was obtained to complete questionnaires pertaining to different possible sources of stress. The questionnaires included the Parental Stressor Scale: Neonatal Intensive Care Unit, State-Trait Anxiety Inventory, and Parent/Child Uncertainty in Illness Scale; The parents of preterm infants had higher mean scores for each of the PSS:NICU sub-scales than parents of full-term NICU infants with the difference significant for the sub-scale Role Alteration; The Parent/Child Uncertainty in Illness Scale was utilized in conjunction with the PSS:NICU to further validate the later instrument. …

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Community Health Decisions: An Analysis Of A Grassroots Venture Into Citizen Participation In Health Care Policy Prioritization Issues, Michele Bonnee-Nichols Jan 1989

Community Health Decisions: An Analysis Of A Grassroots Venture Into Citizen Participation In Health Care Policy Prioritization Issues, Michele Bonnee-Nichols

UNLV Retrospective Theses & Dissertations

Health care policymaking has been largely a closed system in which policymaking experts, special interest groups, and politicians have joined forces to decide what was best for the health care of the American people. This system has been shortsighted leading to severe long-range consequences on society; These critical forms of social consequence warrant this study of health care planning. Specifically, an analysis of a citizen-based grassroots venture, known as "Community Health Decisions," provides us a description of a civic participation movement into the health care political arena; It would appear that with the conclusions of this author, we might learn …

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Hydrogeology And Ground-Water Quality In The Sanders Area, Western Puerco River Basin, Arizona, Earle Campbell Dixon Jan 1989

Hydrogeology And Ground-Water Quality In The Sanders Area, Western Puerco River Basin, Arizona, Earle Campbell Dixon

UNLV Retrospective Theses & Dissertations

Ground-water in the western Puerco River basin near Sanders, Arizona, was evaluated to identify areas of poor water quality and possible radionuclide contamination from natural and/or anthropogenic sources. In addition to documented radioactive occurrences in the regional Chinle Formation, the headwaters of the Puerco River have been host to uranium mine waste discharge and spoils from a tailings pond failure in 1979. Samples from 42 wells and springs were collected during 1987-88 for inorganic ion and radionuclide analysis. Waters, originating from the Alluvial, Bidahochi, and Chinle aquifers, contained variable amounts of dissolved solids and radioactivity. Dissolved solids content ranged from …

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