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Articles 841 - 870 of 1561
Full-Text Articles in Earth Sciences
Facts And Figures About Nebraska Rivers, Ray Bentall
Facts And Figures About Nebraska Rivers, Ray Bentall
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Geologic Map Showing Configuration Of The Bedrock Surface, North Platte, 1 ° X 2 ° Quadrangle, Nebraska, Robert F. Diffendal Jr.
Geologic Map Showing Configuration Of The Bedrock Surface, North Platte, 1 ° X 2 ° Quadrangle, Nebraska, Robert F. Diffendal Jr.
Robert F. Diffendal, Jr., Publications
The map area, in west-central Nebraska, is largely covered by surficial deposits of eolian sand, loess, and alluvium ranging in age from Holocene to Pliocene. Holocene and late Pleistocene(?) eolian sand, as much as 300 ft (91 m) thick, covers most of the area north of the North Platte and Platte Rivers, and also covers a small area south of those rivers. The Peoria Loess of Quaternary age overlies most of the remaining upland north of the Platte River in southwestern Logan, northeastern Lincoln, and much of western Custer and extreme northwestern Dawson Counties. Loess also mantles the divide between …
Ontong Java Plateau, Leg 130: Synopsis Of Major Drilling Results, W. H. Berger, Loren W. Kroenke, Larry A. Mayer, Shipboard Scientific Party
Ontong Java Plateau, Leg 130: Synopsis Of Major Drilling Results, W. H. Berger, Loren W. Kroenke, Larry A. Mayer, Shipboard Scientific Party
Affiliate Scholarship
Sixteen holes were drilled at five sites on the northeastern flank of Ontong Java Plateau during Leg 130 (Sites 803 through 807). All of these sites are near the equator, but are at different depths (803: 02°26.0'N, 3410 m; 804: 01°00.3'N, 3861 m; 805: 01°13.7'N, 3188 m; 806: 00°19.1'N, 2520 m; and 807: 03°36.4'N, 2805 m). One of our goals was to obtain a depth transect of Neogene carbonate deposition for reconstructing the history of ocean climate, chemistry, and productivity, and for understanding the origin of acoustic reflectors. Another goal was to achieve considerable penetration into basement for elucidating the …
High-Resolution, Whole-Core Magnetic Susceptibility Data From Leg 130, Ontong Java Plateau, John A. Tarduno, Larry A. Mayer, Robert Musgrave
High-Resolution, Whole-Core Magnetic Susceptibility Data From Leg 130, Ontong Java Plateau, John A. Tarduno, Larry A. Mayer, Robert Musgrave
Affiliate Scholarship
High-resolution, whole-core magnetic susceptibility data, recorded at 3-cm intervals, were obtained for advanced hydraulic piston (APC) cores at Sites 805, 806, and 807 of Leg 130 on the Ontong Java Plateau. In this initial report, we present a preliminary evaluation of these data for their use in core correlations and paleoclimatic studies. The data allow detailed intrasite correlations between the offset APC cores and provide a means for intersite correlations of Pleistocene sediments. Variations in magnetic susceptibility values probably mirror variations in terrestrial influx and may act as proxy indicators of climate. Highly coherent cyclicity, representing Milankovitch orbital frequencies, is …
Master Of Science Theses And Doctor Of Philosophy Dissertations, Dept. Of Geology, University Of Nebraska-Lincoln, R. R. Burchett
Master Of Science Theses And Doctor Of Philosophy Dissertations, Dept. Of Geology, University Of Nebraska-Lincoln, R. R. Burchett
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Explanation Of Water-Level Hydrographs, P. B. Wigley, M. J. Ellis, G. V. Steele
Explanation Of Water-Level Hydrographs, P. B. Wigley, M. J. Ellis, G. V. Steele
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Radon Deposits In Nebraska, R. R. Burchett
Radon Deposits In Nebraska, R. R. Burchett
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Slickenside Petrography: Slip-Sense Indicators And Classification, Young-Joon Lee
Slickenside Petrography: Slip-Sense Indicators And Classification, Young-Joon Lee
Geology Theses and Dissertations
Petrographic study has been carried out on slickenside thin sections, to find out reliable microstructures for determining the slip-sense of faults, and to classify slickensides morphologically. Thin sections are made cut parallel to the striation and perpendicular to the slip plane. Many useful slip-sense indicators are found in thin section even though such indicators may be absent in hand specimens. They are (1) off-set or bending of once-continuous bodies such as veins, layers, grains or twin lamellae, (2) crystal fibers growing nearly parallel to the slip direction, (3) extensional fractures aligned oblique to the slip plane, (4) S-C geometries in …
Groundwater Levels In Nebraska, 1990, Gregory V. Steele, Perry B. Wigley
Groundwater Levels In Nebraska, 1990, Gregory V. Steele, Perry B. Wigley
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Nebraska Mineral Operations Review, 1990, Raymond R. Burchett, Duane A. Eversoll
Nebraska Mineral Operations Review, 1990, Raymond R. Burchett, Duane A. Eversoll
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Annual Report Of Nebraska-1991, Eileen K. Peterson, Raymond R. Burchett
Annual Report Of Nebraska-1991, Eileen K. Peterson, Raymond R. Burchett
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Resource News-November/December 1991
Resource News-November/December 1991
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Cement Operations In Nebraska, R. R. Burchett
Cement Operations In Nebraska, R. R. Burchett
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Ice-Wedge Casts Of Wisconsinan Age In Eastern Nebraska, William J. Wayne
Ice-Wedge Casts Of Wisconsinan Age In Eastern Nebraska, William J. Wayne
Department of Earth and Atmospheric Sciences: Faculty Publications
Sand-filled, wedge-shaped structures beneath a thin layer of aeolian sand penetrate a preIllinoian till and gravel in northeastern Nebraska. Interpreted to be relic thermal contraction crack wedges, they provide the first definite evidence in this State of the former presence of permafrost. The wedges are 5- 7 m apart, 1.8-2.8 m deep and 0.6-0.9 m across at the top, taper downward to a crack and intersect to form polygons. They are filled with medium sand that contains mostly rounded and frosted grains. Vertical fabric is present in each wedge. Ventifacts lie along the top of the till, which is covered …
Annual Installation Of Irrigation Wells In Nebraska Through 1990, Conservation Survey Division
Annual Installation Of Irrigation Wells In Nebraska Through 1990, Conservation Survey Division
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Conservation And Survey Division, 1991. Annual Outflow/Inflow Of Water From Nebraska, 1950-1990, Conservation Survey Divis
Conservation And Survey Division, 1991. Annual Outflow/Inflow Of Water From Nebraska, 1950-1990, Conservation Survey Divis
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Groundwater-Level Changes In Nebraska, Predevelopment To Fall 1991, Conservation Survey Division
Groundwater-Level Changes In Nebraska, Predevelopment To Fall 1991, Conservation Survey Division
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Peat Deposits In Nebraska, R. R. Burchett
Peat Deposits In Nebraska, R. R. Burchett
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Ocher Deposits In Nebraska, R. R. Burchett
Ocher Deposits In Nebraska, R. R. Burchett
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Composite Section Of Outcropping Rocks Along The Missouri River, R. R. Burchett
Composite Section Of Outcropping Rocks Along The Missouri River, R. R. Burchett
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
1991 Nebraska Water Conference, The Rivers Of Nebraska: Character, Conflicts And Cooperation, Ray Bentall
1991 Nebraska Water Conference, The Rivers Of Nebraska: Character, Conflicts And Cooperation, Ray Bentall
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Development Of A Land Cover Characteristics Data Base For The Conterminous U.S., Thomas R. Loveland, James W. Merchant, Donald O. Ohlen, Jesslyn F. Brown
Development Of A Land Cover Characteristics Data Base For The Conterminous U.S., Thomas R. Loveland, James W. Merchant, Donald O. Ohlen, Jesslyn F. Brown
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Thurston County Test Hole Logs, Raymond R. Burchett, Frank A. Smith
Thurston County Test Hole Logs, Raymond R. Burchett, Frank A. Smith
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Groundwater Levels In Nebraska, 1989, Michael J. Ellis, Gregory V. Steele, Perry B. Wigley
Groundwater Levels In Nebraska, 1989, Michael J. Ellis, Gregory V. Steele, Perry B. Wigley
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Oil And Gas Developments In North Mid-Continent In 1989., Shirley E. Paul, Bruce W. Netzler, Raymond R. Burchett, Paul H. Roberts, Robert Peters, Donivan L. Gordon, John H. Mossler
Oil And Gas Developments In North Mid-Continent In 1989., Shirley E. Paul, Bruce W. Netzler, Raymond R. Burchett, Paul H. Roberts, Robert Peters, Donivan L. Gordon, John H. Mossler
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Postulated Evolution Of Platte River And Related Drainages, V. L. Souders, J. B. Swinehart, V. H. Dreeszen
Postulated Evolution Of Platte River And Related Drainages, V. L. Souders, J. B. Swinehart, V. H. Dreeszen
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Stromatolites Of The Lower Cambrian Deep Spring Formation; Mount Dunfee, Esmeralda County, Nevada, Lynn Oliver
Stromatolites Of The Lower Cambrian Deep Spring Formation; Mount Dunfee, Esmeralda County, Nevada, Lynn Oliver
UNLV Theses, Dissertations, Professional Papers, and Capstones
The Middle Member of the Lower Cambrian Deep Spring Formation at Mount Dunfee, Nevada contains a diverse assemblage of stromatolites that formed on a tide- and storm-dominated, siliciclastic-influenced, carbonate shelf. The stromatolites formed in a shallow subtidal environment within and near active oolite shoals under strongly focused currents. The stromatolites occur in four different lithofacies: (1) bioherms of digitate stromatolites, (2) bioherms and biostromes of inclined stromatolites, (3) isolated forms of massive and hemispheroidal stromatolites, and (4) a biostrome of cryptomicrobial boundstones. The first three lithofacies are interpreted as microbial reefs. They had topographic relief, formed in active agitated waters, …
Bazile Triangle Groundwater Quality Study, David C. Gosselin
Bazile Triangle Groundwater Quality Study, David C. Gosselin
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Annual Installation Of Irrigation Wells In Nebraska Through 1989, Conservation Survey Division
Annual Installation Of Irrigation Wells In Nebraska Through 1989, Conservation Survey Division
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Richardson County Test Hole Logs, Raymond R. Burchett, Frank A. Smith
Richardson County Test Hole Logs, Raymond R. Burchett, Frank A. Smith
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.