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Neotectonic Framework Of The North-Central Alaska Range Foothills, Sean Patrick Bemis

Geosciences

The northern foothills of the Alaska Range form a northward-convex salient at the apex of this orogen and the Denali fault. Despite the proximity of the northern foothills to the Denali fault and several historic large-magnitude earthquakes, the tectonic framework of this region has not been well-studied. A distinct pattern of east-trending folds and faults exists in both the bedrock and the geomorphic features. To assess the active structures of the region, I interpreted previous geologic mapping, developed cross-sections across the foothills belt, analyzed topographic and stream profiles, mapped the sequence of Quaternary fluvial terraces, and performed GPS transects across …

Geosciences Newsletter - 2004, Department Of Geosciences

Geological and Environmental Sciences News

Vol. 1, No. 29

• Mohamed Sultan, Chairperson
• Faculty News
• Emeriti News
• Department News
• Graduate Student News
• Awards & Graduations
• Alumni News
• Field Trips
• Outstanding Alumni Academy
• Special Honor
• New Faces in the Geosciences

Geodetic And Sconstraints On Some Seismogenic Zone Processes In Costa Rica, Edmundo Norabuena, Timothy H. Dixon, Susan Schwartz, Heather Deshon, Andrew Newman, Marino Protti, Victor Gonzalez, Leroy Dorman, Ernst R. Flueh, Paul Lundgren, Fred Pollitz, Dan Sampson

School of Geosciences Faculty and Staff Publications

New seismic and geodetic data from Costa Rica provide insight into seismogenic zone processes in Central America, where the Cocos and Caribbean plates converge. Seismic data are from combined land and ocean bottom deployments in the Nicoya peninsula in northern Costa Rica and near the Osa peninsula in southern Costa Rica. In Nicoya, inversion of GPS data suggests two locked patches centered at 14 ± 2 and 39 ± 6 km depth. Interplate microseismicity is concentrated in the more freely slipping intermediate zone, suggesting that small interseismic earthquakes may not accurately outline the updip limit of the seismogenic zone, the …

Proclamations, National Monuments, And The Scope Of Judicial Review Under The Antiquities Act Of 1906, Roberto Iraola

William & Mary Environmental Law and Policy Review

No abstract provided.

Construction Of A Late Pleistocene Paleothermometer Based On Amino Acid Racemization In Fossil Succinea Shells, Richard Ayres Walther

USF Tampa Graduate Theses and Dissertations

Racemization kinetics of amino acids, determined for the commonly occurring fossil gastropod Succinea, facilitates the ability to construct an accurate and precise paleothermometer to estimate paleotemperatures over specific time intervals during the last 150,000 years in parts of Central Europe. Racemization within the carbonate shell of Succcinea is induced at high temperatures over increasing intervals of time in the laboratory and measured for aspartic acid (asp), glutamic acid (glu), valine (val), and phenylalanine (phe), by reverse-phase liquid chromatography.

The activation energy (E_a), frequency factor (A), and forward rate constant (k1) of the Arrhenius equation are determined from …

An Unusually Large Aulocopella Winnipegensis And Associated Demosponges From The Upper Ordovician Beaverfoot Formation, Southeastern British Columbia, J. Keith Rigby, Paul A. Johnston

Faculty Publications

An unusually large specimen of the rare digitate to bladed Aulocopella winnipegensis Rauff and three relatively normal sized specimens of ashtray-shaped Hudsonospongia? sp. constitute the first record of demosponges from the Upper Ordovician Beaverfoot Formation in southeastern British Columbia and the first record of these taxa from western Canada. Gross form and canal structure are well preserved, but dolomitization and (or) coarse microsphaeroidal silicification have obliterated spicules and other structural details. We interpret these sponges as epifaunal recliners, without means of attachment to the substrate, a life mode rarely encountered in the modern sponge biota.

Computer Modeling Of Geology In The Sparta And Montpelier Quadrangles Of Clay And Chickasaw Counties, Mississippi: A Tantalizing Near Miss, Jason Defibaugh Y Chávez

Theses and Dissertations

This project attempted to combine digital data sets to define and map geologic features in the Sparta and Montpelier quadrangles of Chickasaw and Clay counties in northeastern Mississippi. LANDSAT TM, digital elevation, and soil permeability data was used in conjunction with reference data for the Sparta quadrangle to build a computer model. Variables used in the model were: geology, slope, soil permeability, vegetation indices, the first three bands of a tasseled cap transformation, and drainage frequency. The data used was LANDSAT TM 30 meter imagery, digital elevation models, also at 30 meter resolution, Penn State STASGO soils data, and the …

Accuracy Of Neural Network Classifiers In Humid Tropical Areas, Genong Yu

All-Inclusive List of Electronic Theses and Dissertations

This research develops a better understanding of the use of neural networks in the context of tropical land cover characterization using multiple scale remotely sensed data. Results of the research contributed to developing a robust neural network classifier suitable to use for humid tropical land cover classification in areas such as Altamira, Brazil. Research was focused upon the following: (1) performance ofneural networks with different ancillary data- such as DEM (digital elevation model) and its derivatives; (2) effect of spatial scale on neural network classifiers using remote sensing data from IKONOS, Landsat TM, ASTER, and MODIS; (3) accuracy of neural …

Visualizing The Geology Of Lake Trout Spawning Sites: Northern Lake Michigan, Peter Dartnell, Peter Barnes, James V. Gardner, Kristen Lee

Center for Coastal and Ocean Mapping

Geologists and biologists are working together to understand the links between lake floor geology (composition and shape) and the distribution of lake trout throughout their life cycle. Lake floor geology is one of the main factors determining where lake trout spawn, feed, and hide. In support of ongoing research to study Lake Michigan trout habitats, the U.S. Geological Survey in cooperation with the U.S. Army Corps of Engineers mapped the morphology of principle lake trout spawning sites. Using the Army Corps of Engineer's SHOALS airborne lidar (Light Detection and Ranging) system we mapped six regions in Northern Lake Michigan in …

Amcs Activities Newsletter, No. 27, May 2004, Bill Mixon

KIP Articles

Contents: Authors' Addresses -- New AMCS Bulletins -- Mexico News -- Long and Deep Caves Lists -- Deep Pits List -- Proyecto Cerro Rabon 2004 -- Mexpe 2002 - Sistema Tepapa -- Caving in Sistema Cheve, Oaxaca -- Caves on the Jalpan Quadrangle, Queretaro -- Ox Bel Ha, Spring 2003 -- Maya Cave Shrines, Quintana Roo -- Speciation in Aquatic Trogloxenes in Cenotes -- Caving in Cuetzalan -- History: First Speleological Survey of Mexico Trip -- Chiropterphobia -- Gruta de San Sebastian -- Grutas de Balancanche -- Diving the Cheve Sumps -- Caves of Atoyac, Veracruz -- Geography of Caves …

A Case History Of Site Instability Due To The Presence Of A Shale Layer Above Sloping Bedrock, Sanjeev Kumar, Braja M. Das, Michael L. Hall

International Conference on Case Histories in Geotechnical Engineering

A study conducted for St. Louis County of Missouri, United States of America classified several areas of the county as unstable for any type of construction because of the presence of high plastic shaley clay or clayey shale on sloping bedrock. These areas are considered to have a potential for site instability to occur due to any change in natural conditions that may increase the moisture content of the high plastic shaley clay or clayey shale. A two-story parking garage, founded on shallow foundations, constructed in one of the potentially unstable zones, showed some movement after several years of its …

Environmental Geotechnics To Study A Historical Town, Filippo Ciuffi

International Conference on Case Histories in Geotechnical Engineering

The present paper summarizes the original approach, the different stages and the most innovative results of an interdisciplinary research activity, carried out on the subsoil of a historical site, in a seismic area, in Italy: the old town of Potenza, capital of the Basilicata Region. The entire Research-work has been designed and implemented within a total period of about 3 years. The paper is divided into twelve paragraphs and is organized logically, so that the reader can follow the development sequence of the different, interdisciplinary activities, detailed in the “Research General Flow-Chart”. After the Introduction [paragraph 1.0.0], the Philosophical Approach …

Eleven Case Studies Of Failures In Geotechnical Engineering, Engineering Geology, And Geophysics: How They Could Have Been Avoided, David Cummings, Frank J. Kenton

International Conference on Case Histories in Geotechnical Engineering

When a failure occurs, geotechnical engineers, engineering geologists, and geophysicists assign its cause to an event that immediately precedes the failure, such as an earthquake, heavy rainfall, flood, or other natural event. Assigning the failure to the immediate event is misplaced; the metastasis occurred because marginally stable conditions were allowed to exist through substandard investigations by the technical personnel, improper design, and inadequate review by the permitting agency. The fundamental cause of the failure is human error and is manifested in one or more of six categories. (1) Before the investigation, during discussions with the client. (2) During the investigation, …

Stone Column Ground Improvement Against Liquefaction For The Preveza-Aktio Immersed Tunnel, Christos Vrettos, Stavros Savidis

International Conference on Case Histories in Geotechnical Engineering

The construction of the road fixed-link crossing between Preveza and Aktio on the north-western coast of Greece has recently been completed. The project consists of an immersed single-tube tunnel under the strait and two cut-and-cover tunnels at the ends of the immersed part. The immersed section is constructed of eight precast rectangular concrete elements placed on the sea bottom at a depth of 25 m. The site is characterized by high seismicity. Foundation soil consists of Holocene marine sediments comprising irregular layers of sands, silts and clays that extend to great depth in the central part of the strait. Along …

Impact Of Geographical Information Systems On Geotechnical Engineering, J. David Rogers, Ronaldo Luna

International Conference on Case Histories in Geotechnical Engineering

Over the last four decades Geographical Information Systems (GIS) have emerged as the predominant medium for graphic representation of geospatial data, including geotechnical, geologic and hydrologic information routinely used by geotechnical and geoenvironmental engineers. GIS allow unlimited forms of spatial data to be co-mingled, weighted and sorted with any number of physical or environmental factors. These data can also be combined with weighted political and aesthetic values to create hybrid graphic products capable of swaying public perceptions and decision making. The downside of some GIS products is that their apparent efficacy and crispness can also be deceptive, if data of …

Meet Our Authors And Speakers, Multiple Authors

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.

Estimation Of Maximum Advance In Kaka-Reza Water Conveyance Tunnel At 700 Meter Depth, D. Azizmohammadi, H. Abbasi

International Conference on Case Histories in Geotechnical Engineering

The purpose of this research is the determination of maximum rate of advance in one stage of blasting in middle zone of Kaka-Reza water conveyance tunnel. In this zone of tunnel with average 700 meters of overburden, based on geological and geo-mechanical conditions, the supporting system will install immediately after excavation. The methodology of this research is combined of direct strain evaluation technique (DSET), numerical modeling (FLAC 2D) and convergence analysis. The research is done in three stages. At the first stage, the allowable strain in surrounding rock mass of tunnel is calculated based on DSET. At the second stage, …

Florida's Energy Future: Opportunities For Our Economy, Environment And Security, Florida Solar Energy Center, Philip W. Fairey

FSEC Energy Research Center®

The future of Florida's economy, environment and security is inextricably intertwined with our energy use decisions. Our state has one of the nation's fastest growing populations, promoting rapid expansion of an energy industry that imports its fuel supplies. Florida exports approximately $32 billion per year for these energy fuels. Moreover, the Florida economy depends critically on tourism and agriculture, and the fuels and energy products that maintain them. Our pristine environment is the primary natural resource supporting this unique economic engine and the adverse effects of our rapidly growing energy use now stress it. Our State's economic well-being and security …

Earth Day, Every Day, University Of South Alabama

Conservation/Energy Alternatives

Bibliography and photographs of a display of government documents from the University of South Alabama.

Late Albian Dinosaur Tracks From The Cratonic (Eastern) Margin Of The Western Interior Seaway, Nebraska, Usa, R. M. Joeckel, J. M. Cunningham, R. G. Corner, P. L. Phillips, G. A. Ludvigson

School of Natural Resources: Faculty Publications

No abstract provided.

Uis Commission On Volcanic Caves Newsletter, No. 42, October 2004, Jan Paul G. Van Der Pas

Union Internationale de Spéléologie (UIS) Commission on Volcanic Caves

Contents: Chairman & editorial address -- Latest News -- Takanori Ogawa -- Spallanzani-Father of Vulcanospeleology -- Lazzaro Spallanzani: The Father of Vulcanospeleology (1729-1799) -- News from Kenya -- Proceedings Catania 1999 -- Report sent by Dr. Trimmel -- Report from a visit of a lava cave in Indonesia nearly 20 years ago -- Bill Halliday's permit to access Mowich Cave -- Letter from John Ouimet -- About Listinf of Lava Tube Caves -- The ASU Global Lava Tube Database: A New and Expanding Resource -- Database on Icelandic caves -- A Data Base and classification system for the Azorean volcanic …

Three-Dimensional Seismic Interpretation And Synthetic Modeling Of The Atoka And Morrow Formations, In The Buffalo Valley Field (Delaware Basin, New Mexico, Chaves County) For Reservoir Characterization Using Neural Networks., Alejandro Sanchez A.

Graduate Theses, Dissertations, and Problem Reports (ETD)

While the advantages of Artificial Neural Networks (ANN) for reservoir characterization are widely known, this project expands such benefits by providing a method by which an ANN can be trained prior to its application to real data. First, a geological and 3D seismic interpretation of the lower Pennsylvanian Atoka-Morrow sequence in the Buffalo Valley Field, New Mexico was executed. Then, to design the ANN and to test its predictions, I generated well-logs and synthetic seismic models for seismic attributes extraction. In order to bridge the vertical resolution gap between well-logs (high resolution) and seismic data (low resolution), VSP data was …

Annual Report Of The Officers Of The Town Of Warren, New Hampshire For The Fiscal Year Ending December 31, 2003, 2004 Town Meeting., Warren Town Representatives

Warren, NH Annual Reports

This is an annual report containing vital statistics for a town/city in the state of New Hampshire.

The Cape Ann Plutonic Suite: A Field Trip For Petrology Classes, John B. Brady, John T. Cheney

Geosciences: Faculty Publications

Cape Ann, because of its proximity to Boston and many universities, has long been a focus of geologic study. Nineteenth century papers that consider mineralogy or petrology of Cape Ann rocks include Prescott (1839), Nichols (1856), Kimball (1860), Gregory (1862), Mudge (1862), Balch (1864), Cooke (1866, 1867), Knowlton (1867), Hyatt (1869, 1871a,b), Hunt (1871), Wadsworth (1878, 1882a,b, 1885), McDaniel (1884), Sears (1888, 1889, 1890a, 1891a,b, 1893a,b, 1894a,b, 1895, 1898), Shaler (1889), Pearce (1893), Penfield and Forbes (1896), and Washington (1898a,b,c, 1899a,b,c,d). More recent studies of note include Wright (1900), Clapp (1921), Warren and McKinstry (1924), Bowen and Schairer (1935), Palache …

40Ar/ 39Ar Ages Of Metamorphic Rocks From The Tobacco Root Mountains Region, Montana, John B. Brady, Dana N. Kovaric, John T. Cheney, Lisa J. Jacob, J. Toby King

Geosciences: Faculty Publications

Measurements of 60 single-grain, UV laser microprobe 40Ar/39Ar total gas ages for hornblende from metamorphic rocks of the Tobacco Root Mountains in southwest Montana yield a mean age of 1.71 ± 0.02 Ga. Measurements of 40Ar/39Ar step-heating plateau ages of three bulk hornblende samples from the Tobacco Root Mountains metamorphic rocks average 1.70 ± 0.02 Ga. We believe that these and the K/Ar or 40Ar/39Ar ages reported by previous workers are cooling ages from a 1.78 to 1.72 Ga, upper-amphibolite to granulite facies, regional metamorphism (Big Sky orogeny) that affected the northwestern portion of the Wyoming province, including the Tobacco …

Microfacies Of The Triassic Limestones In The Piatra Şoimuliu Klippe (Transylvanian Nappes, Rarau Syncline, Eastern Carpathians, Romania), Daniela Alexandra Popescu, Liviu Gheorghe Popescu

KIP Articles

No abstract provided.

Pottery And Mobility: A Functional Analysis Of Intermountain Brownware, Britt J Betenson

UNLV Retrospective Theses & Dissertations

Intermountain Brownware, is a late prehistoric ceramic type made by mobile hunter-gatherers that is found throughout southern Nevada, western Utah and northern Arizona. Most hunter-gather groups around the world are not pottery producers. Through interdisciplinary analysis, I examine the physical and morphological characteristics to understand the amount of labor invested in the construction and production of Intermountain Brownware. I then evaluate these results amongst environmental, historical, ethnological, and archaeological data to conclude that Intermountain Brownware possesses lower porosity, and is thinner and stronger than commonly reported. Gas Chromatography-Mass Spectrometry (GC-MS) is performed to empirically characterize food residues remaining in the …

Gis Analysis Of The Pre And Post-Diversion Water Balances In Owens Valley, California, Anna Corinne Draa

UNLV Retrospective Theses & Dissertations

Owens Valley, California is located at the western border of both the Basin and Range and Great Basin Provinces. The valley is hydrologically closed; the only outflow for ground and surface waters is evaporation to the atmosphere. Los Angeles Department of Water and Power (LADWP) began diverting water from Owens Valley in 1913 and has steadily increased the amount of water removed from the valley since then; LADWP has always assumed that the hydrologic system as it existed in 1913 was in equilibrium with modern climate. This study develops a geographical information systems (GIS) based model of Owens Valley to …

A New Species Of Amphipod Crustacean, Pleusymtes Comitari Sp Nov, Associated With Gorgonians On Deep-Water Coral Reefs Off Ireland, A. A. Myers, J. M. Hall-Spencer

School of Biological and Marine Sciences

No abstract provided.

Exploratory Unitization Under The 2004 Model Oil And Gas Convention Act, Owen L. Anderson, Ernest Smith

Faculty Articles

No abstract provided.