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Articles 61 - 90 of 118
Full-Text Articles in Geology
Total Coal Thickness Of The Upper Elkhorn No. 3a Coal (Lower Bed) In Eastern Kentucky, Jeffery A. Esterle, Ernest E. Thacker, Gerald A. Weisenfluh
Total Coal Thickness Of The Upper Elkhorn No. 3a Coal (Lower Bed) In Eastern Kentucky, Jeffery A. Esterle, Ernest E. Thacker, Gerald A. Weisenfluh
Map and Chart--KGS
This map is one of a series that shows the regional characteristics of the Upper Elkhorn No. 3 coal zone. The maps were prepared as part of the U.S. Geological Survey's National Coal Assessment Program, which compiles regional maps and databases that provide a comprehensive assessment of the most important coal beds in the nation. The Upper Elkhorn No. 3 coal zone has been one of the leading producers in the state of Kentucky and, in some areas, contains very high-quality coal. The zone is composed of a number of distinct coal beds that merge in some areas to form …
Effects Of Longwall Mining On Hydrogeology, Leslie County, Kentucky Part 3: Post-Mining Conditions, Shelley Minns Hutcheson, James A. Kipp, James S. Dinger, Daniel I. Carey, Lyle V.A. Sendlein, Gregory L. Secrist
Effects Of Longwall Mining On Hydrogeology, Leslie County, Kentucky Part 3: Post-Mining Conditions, Shelley Minns Hutcheson, James A. Kipp, James S. Dinger, Daniel I. Carey, Lyle V.A. Sendlein, Gregory L. Secrist
Report of Investigations--KGS
The effects of longwall coal mining on hydrology in the Eastern Kentucky Coal Field have been investigated since 1991. The study area is in the Edd Fork watershed in southern Leslie County, over Shamrock Coal Company's Beech Fork Mine. Longwall panels approximately 700 ft wide are separated by three-entry gateways that are approximately 200 ft wide. The mine is operated in the Fire Clay (Hazard No. 4) coal; overburden thickness ranges from 300 to 800 ft. Mining began in panel 1 in September 1991 and concluded with panel 8 in September 1994. Long-term monitoring consisting of a network of piezometers …
The Effect Of Turfgrass Maintenance On Surface-Water Quality In A Suburban Watershed, Inner Blue Grass, Kentucky, R. Michael Williams, James S. Dinger, Andrew J. Powell, Dwayne R. Edwards
The Effect Of Turfgrass Maintenance On Surface-Water Quality In A Suburban Watershed, Inner Blue Grass, Kentucky, R. Michael Williams, James S. Dinger, Andrew J. Powell, Dwayne R. Edwards
Report of Investigations--KGS
Nutrients and pesticides applied during routine maintenance or establishment of turfgrass could result in nonpoint-source pollution. Nutrient and pesticide concentrations in water exiting a turfgrass management area in the Sinking Creek watershed, a suburban watershed in the Inner Blue Grass Region of central Kentucky, were monitored. This watershed was selected because it contains multiple land uses: agricultural, residential, and recreational (golf course).
A survey was conducted to determine the extent to which lawn-care products are used in the residential sector of the watershed. For the golf-course portion, the golf-course superintendent recorded chemical application daily.
Runoff from the golf course was …
Coal Resources Of The Upper Elkhorn No. 3a Coal (Lower Bed) In Eastern Kentucky, Jeffery A. Esterle, Ernest E. Thacker, Gerald A. Weisenfluh, John K. Hiett
Coal Resources Of The Upper Elkhorn No. 3a Coal (Lower Bed) In Eastern Kentucky, Jeffery A. Esterle, Ernest E. Thacker, Gerald A. Weisenfluh, John K. Hiett
Map and Chart--KGS
This map is one of a series that shows the regional characteristics of the Upper Elkhorn No. 3 coal zone. The maps were prepared as part of the U.S. Geological Survey's National Coal Assessment Program, which compiles regional maps and databases that provide a comprehensive assessment of the most important coal beds in the nation. The Upper Elkhorn No. 3 coal zone has been one of the leading producers in the state of Kentucky and, in some areas, is of very high quality. Bed stratigraphy within the Upper Elkhorn No. 3 zone and coal thickness of the No. 3A coal …
Overview Of Environmental Regulations That Affect Coal Combustion, Cortland F. Eble
Overview Of Environmental Regulations That Affect Coal Combustion, Cortland F. Eble
Information Circular--KGS
Environmental regulations have had, and continue to have, an effect on the combustion of coal. These regulations largely affect the electric utility industry, the largest consumer of domestic coal, but they ultimately affect everyone, because we all use electricity, and the cost of compliance is usually passed on to the consumer, resulting in higher electric bills.
Frontier County Test Hole Logs, Duane A. Eversoll
Frontier County Test Hole Logs, Duane A. Eversoll
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Groundwater-Level Changes In Nebraska - Spring 1999 To Spring 2000, Conservation Survey Division
Groundwater-Level Changes In Nebraska - Spring 1999 To Spring 2000, Conservation Survey Division
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Field Trip Guide For The Upper Republican And Middle Republican Nrd's Southwestern Nebraska Geology And Soils, D. A. Eversoll, J. W. Goeke, M. Kuzila
Field Trip Guide For The Upper Republican And Middle Republican Nrd's Southwestern Nebraska Geology And Soils, D. A. Eversoll, J. W. Goeke, M. Kuzila
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Field Trip Guide (For The Nebraska Well Drillers Association) Eastern Nebraska Geology, S. Summerside, D. A. Eversoll, M. Kuzila, M. Joeckel
Field Trip Guide (For The Nebraska Well Drillers Association) Eastern Nebraska Geology, S. Summerside, D. A. Eversoll, M. Kuzila, M. Joeckel
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Distribution And Thickness Of Glacial Till In Nebraska.
Distribution And Thickness Of Glacial Till In Nebraska.
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Some Post-Pliocene Buried Soils Of Central United States, James Thorp, W. M. Johnson, E. C. Reed
Some Post-Pliocene Buried Soils Of Central United States, James Thorp, W. M. Johnson, E. C. Reed
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Calamus River Valley Map, University Of Nebraska - Lincoln
Calamus River Valley Map, University Of Nebraska - Lincoln
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
County Names/Numbers, University Of Nebraska - Lincoln
County Names/Numbers, University Of Nebraska - Lincoln
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Deep Well Guide/Grey Files 121.1, University Of Nebraska - Lincoln
Deep Well Guide/Grey Files 121.1, University Of Nebraska - Lincoln
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Overland Trails, University Of Nebraska - Lincoln
Overland Trails, University Of Nebraska - Lincoln
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Nebraska Map Of Counties, Conservation And Survey Division
Nebraska Map Of Counties, Conservation And Survey Division
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Chase County Test Hole Logs, Vincent H. Dreeszen
Chase County Test Hole Logs, Vincent H. Dreeszen
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Custer County Test Hole Logs, Larry D. Cast
Custer County Test Hole Logs, Larry D. Cast
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Garden County Test Hole Logs, Frank A. Smith
Garden County Test Hole Logs, Frank A. Smith
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Jefferson County Test Hole Logs, Raymond R. Burchett, Frank A. Smith
Jefferson County Test Hole Logs, Raymond R. Burchett, Frank A. Smith
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Box Butte County Test Hole Logs, Frank A. Smith
Box Butte County Test Hole Logs, Frank A. Smith
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Disarticulation And Dissolution Of Crab Remains Across A Depth Gradient In The Bahamas: A Taphonomic Study, Rebecca A. Lincoln
Disarticulation And Dissolution Of Crab Remains Across A Depth Gradient In The Bahamas: A Taphonomic Study, Rebecca A. Lincoln
Honors Papers
The fields of Paleontology and Paleoecology would not be complete without taphonomy, the study of the processes affecting organisms between death and fossilization. Taphonomy is important because it allows us to make more complete conjectures about prehistoric organisms and environments, and makes us aware of possible holes and biases in the fossil record due to highly destructive processes or the loss of delicate, non-resistant organisms. Studies on the processes affecting modern organisms have contributed greatly to the understanding of ancient processes; however, most of these studies are nearshore and short-term. What is lacking is information on the effects of these …
Bad-Boy Bryozoan Biomarkers: Cheilostome Distribution Patterns Along A Bahamian Depth Gradient, Christopher J. Nytch
Bad-Boy Bryozoan Biomarkers: Cheilostome Distribution Patterns Along A Bahamian Depth Gradient, Christopher J. Nytch
Honors Papers
In 1993 and 1994, the Shelf and Slope Experimental Taphonomy Initiative (SSETI) deployed thirty-five samples of sea urchins along the continental shelf/slope of the Bahamas in an effort to explore the paleoecology and taphonomic potentials of shallow water carbonate environments. Samples were retrieved at 1-, 2-, and 6-year intervals for examination and comparison of epibiont accumulation. Tests and spines of the sea urchin Eucidaris were examined for encrusting cheilostome Bryozoa. Specimens were identified to the genus level. Assessment of abundance and distribution patterns with water depth shows that cheilostomes are prevalent in photic waters, and lacking at depth. Burial of …
Air-Ground Temperature Exchange, William L. Schmidt
Air-Ground Temperature Exchange, William L. Schmidt
Theses and Dissertations
Most borehole paleoclimate studies have been based on the assumption that the exchange of temperature between the air and ground surface remains constant. However, secular changes in boundary-layer factors can generate anomalous ground temperatures. This dissertation is an investigation of factors that cause separation of air and ground temperatures on a seasonal to inter-annual time scale, including snow cover duration, latent energy of ground freezing, daily sunlight, precipitation, and vegetation.
Continual records of surface air and near-surface ground temperatures from five sites in North Dakota show similar trends in seasonal air-ground temperature separation. Statistical regressions of mean annual ground temperatures …
Dolomitization And Dolomite Neomorphism: Trenton And Black River Limestones (Middle Ordovician) Northern Indiana, U.S.A., M. I N Chan, Jay M. Gregg, Kevin L. Shelton
Dolomitization And Dolomite Neomorphism: Trenton And Black River Limestones (Middle Ordovician) Northern Indiana, U.S.A., M. I N Chan, Jay M. Gregg, Kevin L. Shelton
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
The Trenton and Black River Limestones are dolomitized extensively along the axis of the Kankakee Arch in Indiana, with the proportion of dolomite decreasing to the south and southeast of the arch. Planar and nonplanar dolomite replacement textures and rhombic (type 1) and saddle (type 2) void-filling dolomite cements are present. Three stages of dolomitization, involving different fluids, are inferred on the basis of petrographic and geochemical characteristics of the dolomites. Nonferroan planar dolomite has relatively high δ18O values (-1.8 to -6.1‰ PDB) and has 87Sr/86Sr ratios (0.70833 to 0.70856) that overlap those of Middle Ordovician seawater. …
Glacial Deposits, Vol. 28, 1999-2000, Department Of Geography-Geology
Glacial Deposits, Vol. 28, 1999-2000, Department Of Geography-Geology
Glacial Deposits
Newsletter of the Department of Geography-Geology
Metric System Vs. Inch-Pound Units
Metric System Vs. Inch-Pound Units
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Characterization Of Hyporheic Zone Processes Of A Northern Prairie Stream, David B. Rush
Characterization Of Hyporheic Zone Processes Of A Northern Prairie Stream, David B. Rush
Theses and Dissertations
A hyporheic zone occurs beneath and adjacent to streams where surface water and groundwater mix. This zone is known to be a reservoir for solutes and a habitat for interstitial organisms. Hyporheic zone boundaries in the Tongue River, North Dakota, were investigated through examination of the physicochemical and biological gradients present in the stream channel and bank sediments. The effects of cattle grazing at the streamside interface of the riparian zone were also examined at two locations to determine land use impacts on the hyporheic zone.
Electrical conductivity (EC) and ammonium gradients were observed beneath the stream channel via nests …
Dissolved Solids Sampling Sites And Zones Of Concentration
Dissolved Solids Sampling Sites And Zones Of Concentration
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Validation Of Algorithms For Remote Sensing Of Aerosols Over Land From The Eos Moderate Resolution Imaging Spectroradiometer (Modis), Anatoly Gitelson
Validation Of Algorithms For Remote Sensing Of Aerosols Over Land From The Eos Moderate Resolution Imaging Spectroradiometer (Modis), Anatoly Gitelson
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.