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Lithospheric Structure Of The Basin And Range Province-Southwestern Colorado Plateau. Southeastern California, Southern Nevada, And Western Arizona, Nigel Oakley Hicks

Open Access Theses & Dissertations

The Basin and Range Province of the western United States is an unusually wide continental rift zone and its structure and evolution have been the topic of much debate. Active source seismic surveys within the Basin and Range Province have delineated a relatively uniform crustal thickness (-30 km) despite varying magnitudes of crustal extension (<10-300 km). Large scale Cenozoic crustal extension has exhumed midcrustal rocks (from 10-20 km depth) along low angle detachment faults to create metamorphic core complexes (exposed lower plate rocks). In contrast to the extreme amounts of extension and internal deformation of the Basin and Range, the Colorado Plateau has remained a relatively rigid block, with a crustal thickness of 40-50 km, apparently resistant to the deformation processes that have shaped the Basin and Range observed today. In general, geophysical surveys reveal a significant contrast in crustal structure between the Basin and Range and it's transition into the Colorado Plateau.

The debate about the origin of the Basin and Range has underscored the need for additional geophysical constraints. Thus in this study, a regional analysis of lithospheric structure in the region of southeastern California, southern Nevada, and western Arizona that includes the Basin and Rangesouthwestern …

Genesis And Evolution Of Proterozoic Crustal Boundaries In The Southern Rocky Mountains., Colin Arthur Shaw

Earth and Planetary Sciences ETDs

The lithosphere of the southwestern United States is a mosaic of Proterozoic arc terranes assembled to the southern margin of the Archean Wyoming craton between 1.8 and 1.6 Ga. This mosaic was profoundly transformed by ca. 1.4 Ga intracontinental plutonism, metamorphism, and tectonism. These processes of assembly and tectonic reactivation during the early stages of continental evolution laid the foundation for the development of the continental architecture of the southwestern United States.

This dissertation comprises three independent studies focused on different aspects of the Proterozoic evolution of tectonic boundaries exposed in the Southern Rocky Mountains. The first study is a …

Review Of The Risk Screening Assessment For The Mixed Waste Landfill, Swmu76, Citizen Action (Through New Mexico Community Foundation), Marvin Resnikoff, Ph.D.

Citizen Action (through New Mexico Community Foundation)

Citizen Action commissioned Dr. Marvin Resnikoff, Radioactive Waste Management Associates, New York, to review Sandia National Laboratories’ risk assessment for the Mixed Waste Landfill and evaluate whether the objectives identified under the Phase 2 RCRA Facility Investigation to “determine thoroughly the contaminant source, define the nature and extent of contamination, identify potential contaminant transport pathways, evaluate potential risks posed by the levels of contamination identified, and recommend remedial action, if warranted, for the landfill” were satisfied. A copy of Dr. Resnikoff’s curriculum vitae is included with this report.

This research was completed money allocated during Round 2 of the Citizens’ …

Roster, University Of South Florida St. Petersburg's College Of Arts And Sciences Instructional Staff, July 2001, University Of South Florida St. Petersburg

SACS Historical Forms and Applications

Roster of instructional staff for the College of Business Administration at the University of South Florida St. Petersburg for Fall 2000, Spring 2001, and projected for Fall 2001.

Ode On An Anasazi Jar: William Henry Holmes And The Archaeology Of The American Southwest, Kevin J. Fernlund

New Mexico Historical Review

No abstract provided.

Full Issue, New Mexico Historical Review

New Mexico Historical Review

No abstract provided.

The Scalloping Phenomenon And Its Significance In Flowassisted-Corrosion., Villien Benoit, Y. Zheng, D. H. Lister

KIP Articles

The recently observed Flow-Assisted Corrosion (FAC) of CANDU outlet feeders is associated with a texturing of the corroding surface, called "scalloping", that imparts the appearance of orange peel. To study the evolution of erosion and dissolution patterns contributing to scalloping and to derive the link with corrosion, experiments on the dissolution of pipes made of plaster of Paris (CaSO4.½H2O) are being carried out. Flow-Assisted Corrosion is a significant problem with carbon steel components handling rapidly moving water or water/steam mixtures in the power generating industry. The mechanism of FAC in outlet feeders of CANDU reactors can be described in terms …

Geologic Description And Reservoir Modeling Of A Jurassic Aged, Low Permeability, Light Oil Reservoir, Northern Coastal Plain, Alaska, Jack Robert Newell

Engineering

The objectives of the study include the analysis of the geologic description and reservoir modeling of a Jurassic aged, low permeability, light oil reservoir on the northern coastal plain of Alaska. The methodology of the study was to use a reservoir simulation model to evaluate the performance and cumulative recovery of the reservoir under primary depletion and a water injection process. Results of the simulation showed a primary recovery of 15.9 %OOIP of oil by solution gas drive. The results of thee simulation by a water displacement process showed that 41.9 %OOIP oil could be recovered with a production of …

Volume 92 Issue 24, Southwestern Oklahoma State University

The Southwestern - Archive

No abstract provided.

Gps-Determination Of Along-Strike Variation In Cascadia Margin Kinematics: Implications For Relative Plate Motion, Subduction Zone Coupling, And Permanent Deformation, M. Meghan Miller, Daniel J. Johnson, Charles M. Rubin, Herb Dragert, Kelin Wang, Anthony Qamar, Chris Goldfinger

All Faculty Scholarship for the College of the Sciences

High‐precision GPS geodesy in the Pacific Northwest provides the first synoptic view of the along‐strike variation in Cascadia margin kinematics. These results constrain interfering deformation fields in a region where typical earthquake recurrence intervals are one or more orders of magnitude longer than the decades‐long history of seismic monitoring and where geologic studies are sparse. Interseismic strain accumulation contributes greatly to GPS station velocities along the coast. After correction for a simple elastic dislocation model, important residual motions remain, especially south of the international border. The magnitude of northward forearc motion increases southward from western Washington (3–7 mm/yr) to northern …

Near Source Strong Ground Motion Simulation For Kocaeli Earthquake (1999), Abdullah Can Zulfikar, Hirokazu Takemiya

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

A near field strong ground motion simulation was carried out due to fault rupturing in the Kocaeli Earthquake (1999). The ground motions are simulated by the convolution scheme in time for source function and in space along rupture direction with the layered soil Green's function method based on the kinematic dislocation model. The effects of the asperities in the fault rupturing are focused considering inhomogeneous rupture mechanism in terms of a multiple asperities. The synthetic motions based on the inversion information from the observed data are compared well with the YPT (Yarimca Petrochemical Complex) record of the Kocaeli Earthquake. The …

Dam Engineering — Earthquake Analysis, Pedro Simão Sêco E Pinto

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

The performance of dams subjected to earthquakes is addressed with particular emphasis of recent earthquakes. Analysis of dams stability during earthquakes by experimental and mathematical models is referred. Foundation studies for soil and rock materials are described and assessment of liquefaction potential is discussed. Selection of design earthquakes by deterministic and probabilistic criteria is presented. Also neotectonics and attenuation relations are described. Monitoring and dam safety during construction and operation are addressed. Reservoir induced seismicity and prototype dynamic tests are treated. Ageing effects and rehabilitation of dams are discussed. Benefits and concerns of dams are referred. Risk analysis is addressed. …

Montana Kaimin, March 2, 2001, Associated Students Of The University Of Montana

Montana Kaimin, 1898-present

Student newspaper of the University of Montana, Missoula.

Refined Kinematics Of The Eastern California Shear Zone From Gps Observations, 1993-1998, M. Meghan Miller, Timothy H. Dixon, Roy K. Dokka

All Faculty Scholarship for the College of the Sciences

Global Positioning System (GPS) results from networks spanning the Eastern California shear zone and adjacent Sierra Nevada block, occupied annually between 1993 and 1998, constrain plate margin kinematics. We use an elastic block model to relate GPS station velocities to long‐term fault slip rate estimates. The model accounts for elastic strain accumulation on the San Andreas fault, as well as faults of the Eastern California shear zone. South of the Garlock fault, 14 mm/yr of dextral shear is distributed across the Eastern California shear zone. Some of this slip penetrates eastward into the Basin and Range, and a collective budget …

Taphonomy And Significance Of Jefferson's Ground Sloth (Xenarthra: Megalonychidae) From Utah, H. Gregory Mcdonald, Wade E. Miller, Thomas H. Morris

Western North American Naturalist

While a variety of mammalian megafauna have been recovered from sediments associated with Lake Bonneville, Utah, sloths have been notably rare. Three species of ground sloth, Megalonyx jeffersonii, Paramylodon harlani, and Nothrotheriops shastensis, are known from the western United States during the Pleistocene. Yet all 3 are rare in the Great Basin, and the few existing records are from localities on the basin margin. The recent discovery of a partial skeleton of Megalonyx jeffersonii at Point-of-the-Mountain, Salt Lake County, Utah, fits this pattern and adds to our understanding of the distribution and ecology of this extinct species. Its occurrence …

The Archaeology And Paleoecology Of The Aubrey Clovis Site (41dn479) Denton County, Texas, C. Reid Ferring

Index of Texas Archaeology: Open Access Gray Literature from the Lone Star State

This report contains the results of interdisciplinary investigations of the Aubrey Clovis Site (41DN479}, located at Lake Ray Roberts, Denton County, Texas, and conducted by the Center for Environmental Archaeology, University of North Texas for the U.S. Army Corps of Engineers, Fort Worth District. Exposed by construction of the artificial outlet channel for the reservoir, the site is a multi-cluster complex of archaeological features and artifact-fauna! concentrations buried 7-9 meters below the flood plain of the Elm Fork Trinity River. The Clovis-age materials are geologically situated on a paleo surface within a 14 m thick sequence of late Quaternary deposits, …

Houston Area Geoarcheology: A Framework For Archeological Investigation, Interpretation, And Cultural Resource Management In The Houston Highway District, James T. Abbott

Index of Texas Archaeology: Open Access Gray Literature from the Lone Star State

This report represents an examination of geoarcheological issues affecting a six county area in the vicinity of Houston, Texas. The study area includes Harris, Montgomery, Waller, Fort Bend, Brazoria, and Galveston counties (Figure 1), which collectively make up the Houston District, a regional administrative entity of the Texas Department of Transportation (TxDOT). This study represents the first phase of a district-focused geoarcheological program being implemented at TxDOT, with similar studies of other districts to follow . It is intended to familiarize archeologists working in the region with relevant geoarcheological issues, thus serving as a resource for researchers involved in prospection, …

Monterey-Seaside Quadrangles : Earthquake Fault Zones And The Local Building Policy, Chris Pilson

Capstone Projects and Master's Theses

he population of the Monterey peninsula is increasing. Developers are looking to expand housing and other commercial and public building into previously undeveloped areas. Because faults cut through the peninsula and surrounding areas, the possibility of building on potentially seismically hazardous areas increases as the population expands. Upon examination of the current Monterey County policies on building and planning I found those policies did not fully reflect the current scientific knowledge about active faults in the region. The Monterey County General Area Plan is currently being revised as a normal process of revising the Plan every 20 years. The last …

Shaping The Modern West: The Role Of The Executive Branch, John D. Leshy

University of Colorado Law Review

No abstract provided.

Lithium Isotope Geochemistry Of Marine Sediments., Libo Zhang

LSU Historical Dissertations and Theses

While the isotope geochemistry of lithium in the marine environment is increasingly known, there are still outstanding problems concerning its oceanic budget and mantle-crust recycling that remain to be resolved. To evaluate the role of marine sediments in the oceanic budget, laboratory experiments were conducted to determine the extent of lithium adsorption on marine sediments and the magnitude of isotopic fractionation. Sediments from the Greenland margin were studied to gain further understanding of the sediment-water interaction. The isotopic compositions of the major types of marine sediments were characterized to understand the sedimentary cycle of lithium. The enhanced database permits a …

A Proposal For A Method To Establish Natural-Hazard-Based Land-Use Planning: The Adapazarı Case Study, Alper Çabuk

Turkish Journal of Earth Sciences

As a result of recent disasters in northwest Turkey (Marmara earthquake August 17, 1999/Düzce earthquake November 12, 1999), many buildings collapsed and many people experienced physical and mental problems. We can suppose that the problems caused by these earthquakes will be solved in the future, but geological studies show that the problems will not disappear in that many scientists are predicting a new disaster that will affect the same region. A design of natural-hazard land-use planning for minimising the consequences of recent and possible earthquakes is presented herein. The Adapazarı case is used to demonstrate the fundamentals of this study. …

Normal Faults And Extensional Folds Of Southwest Montana And Eastern Idaho, Susanne U. Janecke, J. J. Blankenau, C. J. Vandenburg, B. S. Van Gosen

Geosciences Faculty Publications

No abstract provided.

A Geographic Analysis Of Vegetation Deterioration In The Tabuk Area, Saudi Arabia, Khalid Musallam Alharbi

All-Inclusive List of Electronic Theses and Dissertations

Vegetation deterioration has received an increasing amount of attention in the last few decades. It is considered a main indicator of land degradation processes. The Tabuk area, located in the northwest region of Saudi Arabia, has experienced vegetation deterioration as the major facet of land degradation processes. The study utilized Landsat-5 TM data, professional agricultural reports, and topographic maps, supported with intensive fieldwork to monitor vegetation deterioration and its causes and consequences. The data used in this study has been analyzed using remotely sensed methods by pre-processing data, visual interpretation, and Normalized Differences Vegetation Index (NDVI). Climatic analysis also applied, …

Faculty Senate Minutes 2000 - 2001, Missouri University Of Science And Technology Faculty Senate

Minutes & Agendas

No abstract provided.

The Evolving Face Of God As Creator: Early Ninteenth-Century Traditionalist And Accommodationist Theological Responses In British Religious Thought To Paleonatural Evil In The Fossil Record, Thane Hutcherson Ury

Dissertations

The Topic

From the early Reformation through the early 1800s, Gen 1-11 was consensually understood as providing a perspicacious, historical account of how God brought the world into being. Tenets of belief included six literal 24-hour days of creation and a catastrophic global Flood, and most often the conviction that Gen 1:31 implies that no evil of any type existed prior to the Fall. New geological interpretations in the early nineteenth century, however, pointed toward an earth history that seemed anything but very good, instead suggesting a harsh concatenation of deep-time prelapsarian pain, struggle, destruction of the weak, predation, diseases, …

The Dillow’S Ridge Site And The Production Of Mill Creek Chert Tools, Brian M. Butler, Charles R. Cobb

Faculty Publications

The Dillow's Ridge site (11 U635) is a small Mississippian village situated on an unplowed hilltop near the largest known Mill Creek chert quarry in Union County, Illinois. The site was both a permanent residential settlement and a major workshop where Mill Creek chert tools were produced for nonlocal use. Radiocarbon dates document the occupation from the late 1200s A.D. to A.D. 1450 or 1500. The production debris and rejects indicate that the major “export" products were hoes and Ramey knives. Although the quantity of lithic debris on the site is very impressive, estimates of annual production of large biface …