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The Sloan Sag: A Mid-Miocene Volcanotectonic Depression, North-Central Mccullough Mountains, Southern Nevada, Hayden L. Bridwell

UNLV Theses, Dissertations, Professional Papers, and Capstones

In the Hidden Valley area of the north-central McCullough Mountains, southern Nevada, mid-Miocene andesite and dacite domes, flows and pyroclastic units (the Sloan volcanics) partially fill a sag in the underlying Hidden Valley volcanics. The 13.5 km diameter sag formed during and/or after the eruption of the Sloan volcanics. Sagging was accommodated by a combination of movement on the McCullough Wash fault system, and subsidence into evacuated chambers.

Major, trace and rare-earth element geochemistry suggests that the rocks of the Sloan volcanics belong to four groups, each of which were produced by partial melting of chemically distinct sources. With the …

Binary Programming Models Of Spatial Pattern Recognition: Applications In Remote Sensing Image Analysis, Thomas G. Reed

Theses and Dissertations

The major purpose of this investigation was to implement subregion allocation objectives using a network model base on an existing subregion allocation binary programming model (Benabdallah and Wright (B&W), 1990), the ultimate goal being the application of subregion allocation concepts towards the spatial analysis of satellite imagery. The multi-objective aspects of subregion allocation can be accomplished via a network formulation, a formulation vastly simpler in complexity than the binary programming models previously used. Without a network programming package that could maintain integral flows, however, deriving the solution was a tiresome task for the user. Nonetheless, several new concepts and advantages …

A Mineral Lessee's Obligation To Explore Unproductive Portions Of The Leased Premises In Louisiana, Thomas A. Harrell

Louisiana Law Review

No abstract provided.

Northern Light, Volume 4, Number 1, N/A N/A

The Northern Light

No abstract provided.

Digitized Cathodoluminescence Imaging Of Minerals, Ian M. Steele

Scanning Microscopy

Digital imaging with cathodoluminescence (CL) capability, provides an additional, quantitative imaging perspective. While CL images can be useful by themselves, most microbeam instruments allow simultaneous acquisition of other signals including backscattered electron (BSE), secondary electron (SE), and X-ray images providing a powerful set of data for interpretation. Digital panchromatic images allow the use of standard and advanced image processing now available on laboratory computers to enhance single images or provide a means of combining information from two or more images. Other advantages of digital CL images include: 1) selective scan rates to avoid image distortion; 2) adjustable dwell times at …

Effects Of Organic Enrichment On Estuarine Macrofaunal Benthos: A Comparison Of Sediment Profile Imaging And Traditional Data, Raymond E. Grizzle, Clayton A. Penniman

Jackson Estuarine Laboratory

No abstract provided.

Ua66/8/3 Geogram, Wku Geography & Geology

WKU Administration Documents

Newsletter created by and about the WKU Geography & Geology highlighting activities of faculty, students and alumni.

Cave Research Foundation Newsletter, Volume 19, No. 3, August 1991, Sue Hagan, Mick Sutton

Cave Research Foundation Newsletter

Contents: Big Holes in the Southern Highlands -- Notes from Here & There -- Cave Specialist Appointed at Carlsbad -- Bulletin Board -- Lechuguilla Update -- The 1991 CRF Fellowships -- Norm Pace Elected to National Academy of Sciences -- On the Path to Glory -- Mammoth Cave 50th Anniversary -- Guadalupe's -- Mammoth Cave -- Missouri -- Missouri Cave Inventory Set to Resume -- Roppel Cave: Where Will It All End? -- Mammoth Cave Bat Survey -- Mexican Freetail Bats in Trouble -- U. of Arizona Administrators go Batty -- Lilburn Latest -- The Underground Reader -- 1991 CRF …

Dichotemies Of The Human Perception Of The Environment, Janet K. Robson

Undergraduate Honors Capstone Projects

Environmentalism was not introduced in the year 1991, nor was it introduced with the era of the sixties. Perhaps, it is best to say that environmentalism has existed since the dawn of time--an environmentalism consisting of a "hands-off" policy. However, movements based on the environment have experienced an evolution in the past 30 years pertaining to the nature of preservation of wilderness areas and natural resources.

Missouri S&T Magazine, May 1991, Miner Alumni Association

Missouri S&T Magazine

No abstract provided.

The George-Anne, Georgia Southern University

The George-Anne

• Campus Briefs
• Opinions
• Features
• Sports

Applications Of The Band-Limited-White Noise Source Model For Predicting Site-Specific Strong Ground Motions, Ivan G. Wong, Walter J. Silva, Robert B. Darragh, Cathy Stark, Douglas H. Wright

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

Since the Band-Limited-White-Noise (BLWN) source model coupled with random vibration theory (RVT) was first developed in the early 1980's, it has been used successfully to predict strong ground motions at rock sites in different tectonic regimes. The BLWN-RVT methodology is appropriate for an engineering characterization of strong ground motions at a site since the method captures the important features of these motions in terms of peak acceleration and spectral composition and requires a minimum of input parameters. Recently, the capability to estimate strong ground motions at soil sites has been incorporated into the methodology by using RVT and plane-wave propagators …

Structural Damage In A Populated Area Due To An Active Fault, N. Kalteziotis, N. Sabatakakis, G. Koukis, H. Zervogiannis, G. Tsiambaos

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

The city of Patras was struck in August 1989 by a shallow earthquake of M_S= 4.8 which caused a surface rupture and serious structural damage to several buildings located in a narrow elongated zone. A detailed investigation programme was carried out including geological mapping, drilling of boreholes, in situ and laboratory testing and monitoring of horizontal and vertical movements. It was found that the surface rupture, about 1500 m long, was closely related with the reactivation of a preexisting normal fault. The structural damage of buildings was found to be limited mainly in a narrow zone 50 m …

The Geologic Record Of Wind Erosion, Eolian Deposition, And Aridity On The Southern High Plains, Vance T. Holliday

Great Plains Research: A Journal of Natural and Social Sciences (through 2013)

Evidence of wind erosion, accumulation of airborne sediments, and drought is preserved on the Southern High Plains. Eolian deposition in the Holocene concentrated between 6000 and 4500 years ago. The Blackwater Draw Formation indicates episodic wind erosion and deposition in the past 1.6 million years. The Ogallala Formation suggests a vast, sandy eolian plain accumulated episodically between 4 and 11 million years. Warmer and drier conditions predicted for the region in a globally-warmer climate will thus be superimposed upon prevailing characteristics of wind and relative aridity that have dominated recent geologic time.

Illinois State Report, February 1, 1991, Illinois State University

Illinois State University Report (1966-2012)

Illinois State University bi-weekly employee newsletter.

Dissociation Quotients Of Oxalic Acid In Aqueous Sodium Chloride Media To 175c, Richard Kettler, Donald A. Palmer, David J. Wesolowski

Department of Earth and Atmospheric Sciences: Faculty Publications

The first and second molal dissociation quotienls of oxalic acid were measured potenliometrically in a concentration cell filled with hydrogen electrodes. The emf of oxalic acid-bioxalate solutions was measured relative to an HCI standard solution from 25 to 125°C over 25° intervals at nine ionic strengths ranging from 0.1 to 5.0 molal (NaCl). The molal dissociation quotients and available literature data were treated in the all anionic form by a five-term equation that yielded the following thermodynamic quantities at infinite dilution and 25°C: logK_Ia = -1.277±0.010, ΔH_l̊a = -4.1± 1.1 kJ-mol^-1, ΔS_l̊a = 38±4 J-K …

"Introduction" (To Alfred Russel Wallace; An Anthology Of His Shorter Writings), Charles H. Smith

DLPS Faculty Publications

No abstract provided.

1990 Town Report, Goffstown, Nh., Goffstown Town Representatives

Goffstown, NH Annual Reports

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

Water Resources Review - January 1991 Vol 4 Supplement 1, Annis Water Resources Institute

AWRI Reviews

No abstract provided.

Quaternary Geology Of The Northern Great Plains, William J. Wayne, James S. Aber, Sherry S. Agard, Robert N. Bergantino, John P. Bluemle, Donald A. Coates, Maurice E. Cooley, Richard F. Madole, James E. Martin, Brainerd Mears Jr, Roger B. Morrison, Wayne M. Sutherland

Department of Earth and Atmospheric Sciences: Faculty Publications

The Great Plains physiographic province lies east of the Rocky Mountains and extends from southern Alberta and Saskatchewan nearly to the United States-Mexico border. This chapter covers only the northern part of the unglaciated portion of this huge region, from Oklahoma almost to the United StatesCanada border, a portion that herein will be referred to simply as the Northern Great Plains (Fig. 1). This region is in the rain shadow of the Rocky Mountains. Isoheyets are roughly longitudinal, and mean annual precipitation decreases from about 750 mm at the southeastern margin to less than 380 mm in the western and …

Backscatter Analysis And Sidescan Imaging Of The Deep Sea Floor Using The Multi-Beam Sonar Sea Beam, Kushal K. Talukdar

Open Access Dissertations

No abstract provided.

Structural Geology Of The Blackfoot Thrust System In The Cramer Creek Area Missoula County Montana, Patrick H. Reynolds

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.

Lender Liability Under Cercla: A Game Of Chance Or A Game Of Skill, Martin R. Jelliffe

MC Law Review

No abstract provided.

Paleoenvironment Of Elkhorn Slough And Surrounding Wetland Habitats : A Geological Study Using An Ecological Approach, Michelle Ingram Hornberger

Master's Theses

No abstract provided.

Comparison Of Heavy Minerals, Sediments And Gold In A Glacio-Marine Placer Deposit Offshore Nome, Alaska / By Robert R. Tarver, Robert R. Tarver

Electronic Theses and Dissertations

No abstract provided.

A Preliminary Report Of The 1990 Season At Tel Gezer: Excavations Of The "Outer Wall" And The "Solomonic" Gateway (July 2 To August 20, 1990), Randall W. Younker

Andrews University Seminary Studies (AUSS)

No abstract provided.

A Geophysical And Geological Study Of The Farmville Triassic Basin, Charles G. James Jr.

OES Theses and Dissertations

The Farmville basin is one of many Triassic basins which are found along the eastern coast of North America, and is the largest of the central string of basins in Virginia. Meta-volcanic and metasedimentary rocks of the Chopawamsic Formation, as well as felsic intrusives are the primary lithologies surrounding the basin. A detailed gravity survey was conducted along six roads that trend approximately NW-SE, across the basin. Geologic, gravity, magnetic, and radiometric data were used to develop a kinematic model. Gravity anomalies were isolated using two-dimensional harmonic analysis methods to isolate the local, and regional anomalies. This analysis indicates that …