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Articles 27151 - 27180 of 30009
Full-Text Articles in Entire DC Network
The Application Of A Statistical Trend Analysis Program To Ground-Water Quality Monitoring Data From Eight Western Michigan Solid Waste Landfills, Amy Decosta Lachance
The Application Of A Statistical Trend Analysis Program To Ground-Water Quality Monitoring Data From Eight Western Michigan Solid Waste Landfills, Amy Decosta Lachance
Masters Theses
A statistical analysis and interpretation of ground-water chemistry data from eight landfills in Western Michigan was performed. Data were collected over approximately the past ten years, pursuant to the requirements of Michigan's Solid Waste Management Act. A statistical regression model was used to reduce the data to identifiable trends and estimated magnitudes. These results were analyzed with respect to each landfill's characteristics and hydrogeological setting. Comparisons were made concerning the landfills' relative potential for environmental harm. Also, the effectiveness and applicability of this model to the analysis of ground-water monitoring data was assessed.
It was concluded that this analysis and …
An Inventory And Condition Survey Of The Roebourne Plains And Surrounds, Western Australia, A L. Payne, Peter J. Tille
An Inventory And Condition Survey Of The Roebourne Plains And Surrounds, Western Australia, A L. Payne, Peter J. Tille
Technical Bulletins
The survey area is located in the North-West Division of Western Australis. It covers part of the Dampier-Barrow Island, Pyramid, Roebourne and Ysrraloola 1: 250,000 scale map sheets and all of the Karatha, Mallina, Pyrsmid, Sherlock, Mt Welcome and Warambie pastoral leases.
The Paleontology And Paleoenvironments Of The Kanawha Black Flint Member And Related Facies, Kanawha Formation (Middle Pennsylvanian), Northwest Boone County And Vicinity, West Virginia, Matthew B. Watson
Theses, Dissertations and Capstones
The Kanawha Black Flint member of the Kanawha Formation was deposited in a shallow marine coastal setting with low sand supply and low wave energy. The Kanawha Black Flint member and adjacent coal zones are divisible into five sedimentary facies based on lithology, body and trace fossils and sedimentary structures. Coastal swamps and lakes are represented by thinly laminated carbonaceous shales and coals containing rooted seat rocks and crevasse sandstones with root traces and vertical Calamites trunks.
The offshore facies consists of a gray laminated sideritic shale. Phosphatic and calcareous brachiopods and shallow burrowing bivalves predominate in the offshore assemblage. …
Marine Sediment Classification Using The Chirp Sonar, Lester R. Leblanc, Larry A. Mayer, Manuel Rufino, Steven G. Schock, John King
Marine Sediment Classification Using The Chirp Sonar, Lester R. Leblanc, Larry A. Mayer, Manuel Rufino, Steven G. Schock, John King
Affiliate Scholarship
The chirpsonar is a calibrated wideband digital FMsonar that provides quantitative, high‐resolution, low‐noise subbottom data. In addition, it generates an acoustic pulse with special frequency domain weighting that provides nearly constant resolution with depth. The chirpsonar was developed with the objective of remote acoustic classification of seafloor sediments. In addition to producing high‐resolution images, the calibrated digitally recorded data are processed to estimate surficial reflection coefficients as well as a complete sediment acoustic impulse profile. In this paper, surficial sediments in Narragansett Bay, RI are used to provide ground truth for an acoustic model. Quantitative acoustic returns from the chirpsonar …
Seabeam And Seismic Reflection Surveys On The Ontong Java Plateau, Larry A. Mayer, Tom H. Shipley, Edward L. Winterer, David Mosher, Rick A. Hagen
Seabeam And Seismic Reflection Surveys On The Ontong Java Plateau, Larry A. Mayer, Tom H. Shipley, Edward L. Winterer, David Mosher, Rick A. Hagen
Affiliate Scholarship
No abstract provided.
Water Quality In The Kentucky River Basin, Daniel I. Carey
Water Quality In The Kentucky River Basin, Daniel I. Carey
Information Circular--KGS
Data gathered up to 1990 suggest that water pollution problems existed throughout the Kentucky River Basin. Fecal coliform bacteria in streams was a widespread problem because of the inadequate treatment of municipal wastes, failing septic systems, and agricultural runoff. Iron, lead, manganese, mercury, and silver exceeded State standards and Federal guidelines for drinking water and aquatic life at most of the sample sites for a majority of samples. Aquatic life in many smaller streams in the Knobs region was reduced by chloride discharges from oil and gas operations, according to the Kentucky Division of Water. Organic enrichment and high nutrient …
Paleoenvironmental Analysis Of Three Subfossil Coleopteran Faunas From The Toklat River Drainage, Central Alaska, Lisa L. Churchill
Paleoenvironmental Analysis Of Three Subfossil Coleopteran Faunas From The Toklat River Drainage, Central Alaska, Lisa L. Churchill
Senior Scholar Papers
Three sediment samples were collected from exposures along the Tok lat River. Central Alaska and analyzed for subfossil Coleopteran remains. Two samples arc Holocene in age (650 ± b.p .. and submodem) and the other is believed to be laic Pleistocene in age, based on stratigraphic interpretations. The Pleistocene fauna was representative of a tundra environment adjacent to a fluvial system. The older Holocene sample was indicative of a point bar deposit wi rh sl ightly moister conditions. although rhe occurrence of several tundra species was also noted. These tundra species were evidently able to make the transition from their …
Resource News-May/June 1992
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Aminostratigraphy And Oxygen Isotope Stratigraphy Of Marine Terrace Deposits Palos Verdes Hills And San Pedro Areas Los Angeles County California, Daniel R. Muhs, Gifford H. Miller, Joseph F. Whelean, George L. Kennedy
Aminostratigraphy And Oxygen Isotope Stratigraphy Of Marine Terrace Deposits Palos Verdes Hills And San Pedro Areas Los Angeles County California, Daniel R. Muhs, Gifford H. Miller, Joseph F. Whelean, George L. Kennedy
United States Geological Survey: Staff Publications
Amino acid and oxygen isotope data for fossils from terraces of the Palos Verdes Hills and San Pedro areas in Los Angeles County California shed new light on the ages of terraces sea level history marine paleotemperatures and late Quaternary tectonics in this region Low terraces on the Palos Verdes peninsula correlate with the 80 ka and 125 ka sea level highstands that are also recorded as terraces on other coasts In San Pedro the Palos Verdes sand the deposit on what is mapped as the first terrace by Woodring and others 1946 was previously thought to be a single …
Solid Waste Management In Seismic Impact Zones, Raymond R. Burchett
Solid Waste Management In Seismic Impact Zones, Raymond R. Burchett
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Nebraska Mineral Operations Review, 1991, R. R. Burchett, Duane A. Eversoll
Nebraska Mineral Operations Review, 1991, R. R. Burchett, Duane A. Eversoll
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Mineralogy, Geochemistry, And Dispersal Of Opaque Oxides On The Continental Shelf Of The Cascadia Margin, Kommajosyula Subramanya Ravi
Mineralogy, Geochemistry, And Dispersal Of Opaque Oxides On The Continental Shelf Of The Cascadia Margin, Kommajosyula Subramanya Ravi
Dissertations and Theses
Opaque oxide minerals (ilmenite, chromite, and magnetite) in sands from the Oregon continental shelf have been studied to establish the provenance, dispersal, and grade of potential shelf placer deposits. The study area extends southward from offshore of the Columbia River in northern Oregon to the Klamath River in northern California.
Natural And Technological Disasters: Causes, Effects And Preventive Measures, Nazrul I. Khandaker
Natural And Technological Disasters: Causes, Effects And Preventive Measures, Nazrul I. Khandaker
Publications and Research
No abstract provided.
Geology And Stratigraphy Of The Western Kentucky Coal Field, Stephen F. Greb, David A. Williams, Allen D. Williamson
Geology And Stratigraphy Of The Western Kentucky Coal Field, Stephen F. Greb, David A. Williams, Allen D. Williamson
Bulletin--KGS
The Pennsylvanian rocks of the Western Kentucky Coal Field produce between 40 and 55 million tons of coal a year from as many as 45 coal seams; however, three seams produce more than 75 percent of the total. In addition, Pennsylvanian strata contain numerous oil and natural gas reservoirs, tar-sand reservoirs, and industrial minerals. Pennsylvanian sandstones are also some of the most important bedrock aquifers in the coal field. Because of the economic importance of the Pennsylvanian strata to the region and the Commonwealth as a whole, a better understanding of these rocks is needed. This description of the nomenclature …
Low-Silica And High-Calcium Stone In The Newman Limestone (Mississippian) On Pine Mountain, Letcher County, Southeastern Kentucky, Garland R. Dever Jr., Thomas L. Robl, Jack R. Moody, Frank H. Walker, George W. Ellsworth Jr., Lance S. Barron
Low-Silica And High-Calcium Stone In The Newman Limestone (Mississippian) On Pine Mountain, Letcher County, Southeastern Kentucky, Garland R. Dever Jr., Thomas L. Robl, Jack R. Moody, Frank H. Walker, George W. Ellsworth Jr., Lance S. Barron
Information Circular--KGS
The coal industry of Kentucky is an important market for limestone. Coal producers use limestone as rock dust for explosion abatement in underground coal mines and as a neutralizing agent in surface-mine reclamation and acid-drainage control. Haulage-road construction and maintenance require crushed stone.
Coal-bearing rocks of Pennsylvanian age in the Eastern Kentucky Coal Field generally do not contain limestones that are sufficiently thick to quarry or mine economically, but in the southeastern part of the coal field, fault movement has brought the Newman Limestone to the surface along Pine Mountain. The Newman was sampled at three sites in Letcher County …
Geologic Highway Cross Sections: Interstate Highway 75 Conway, Kentucky, To Jellico, Tennessee, Donald R. Chesnut Jr.
Geologic Highway Cross Sections: Interstate Highway 75 Conway, Kentucky, To Jellico, Tennessee, Donald R. Chesnut Jr.
Map and Chart--KGS
Highway roadcuts along Interstate Highway 75 from Conway, Kentucky, to Jellico, Tennessee, expose Mississippian and Pennsylvanian rocks in south-central Kentucky (Fig. 1). The roadcut exposures offer easy access and stratigraphic variety for educational purposes, and are ideal for high school, university, and professional geology field trips. Several national and international field trips, and many out-of-State university field trips have examined these exposures. In addition, scientific studies involving elastic and carbonate sedimentology, coal geology, paleontology, biostratigraphy, and karst (cave) development have been undertaken along this road.
Design, Construction, And Monitoring Of The Ground-Water Resources Of A Large Mine-Spoil Area: Star Fire Tract, Eastern Kentucky, David R. Wunsch, James S. Dinger, Page B. Taylor
Design, Construction, And Monitoring Of The Ground-Water Resources Of A Large Mine-Spoil Area: Star Fire Tract, Eastern Kentucky, David R. Wunsch, James S. Dinger, Page B. Taylor
Report of Investigations--KGS
By the year 2010, the Star Fire mining operation in Knott, Breathitt, and Perry Counties in eastern Kentucky, which uses mountaintop-removal and hollow-fill mining techniques, will have created approximately 5,000 acres of gently rolling terrain that could support alternative land uses. The present research is centered on approximately 1,000 acres of spoil created since mining began in 1981. An aquifer fed by both ground and surface water will be created within the spoil. Spoil-handling techniques such as cast blasting, dragline placement, end dumping by trucks, and surface grading have created porous coarse-rock zones within the spoil through which ground water …
The Origin Of Metalliferous Argillites In The Shoal Arm Formation Of North-Central Newfoundland, Volker Brüchert
The Origin Of Metalliferous Argillites In The Shoal Arm Formation Of North-Central Newfoundland, Volker Brüchert
Geology Theses and Dissertations
The Middle Ordovician Shoal Arm Formation, which is located in the central volcanic belt of north-central Newfoundland, is a tripartite assemblage of hematitic argillites, grey cherts, and black shales directly underlying a flysch sequence. The hematitic argillites are enriched in Fe, Mn, Ni, Pb, and Co. Factor analysis and principal component analysis indicate the presence of a hydrothermal component, presumably derived from hydrothermal activity in the coeval Lawrence Head volcanics. Unusual, (?) calcareous Mn-Fe-oxide nodules are present in the top parts of turbidites in the hematitic argillites. Electron microprobe analysis of a color transition from a red to a green …
Thermal-Mechanical Response To An Intruding Magma Chamber, Christoph Arz
Thermal-Mechanical Response To An Intruding Magma Chamber, Christoph Arz
Geology Theses and Dissertations
The thermal-mechanical response of rock at shallow to medium depth beneath the earth's surface has been modeled as a magma body ascends toward it. The overall stress field is calculated by considering the country rock as a viscous fluid, a thermal-elastic material, or as an elasto-plastic material that fractures when its strength is overcome.
The stress field within and around a spherical magma body surrounded by a homogeneous, Newtonian fluid has been evaluated and can be used at deeper levels in the earth's crust where the viscosity of the country rock is relatively low. With decreasing depth wall rock material …
A Kinematic Study Of The Summit Valley Plutonic Complex, Klamath Mountains, California, Nancy E. Griesau
A Kinematic Study Of The Summit Valley Plutonic Complex, Klamath Mountains, California, Nancy E. Griesau
Geology Theses and Dissertations
The Summit Valley plutonic complex (SVPC) is a multi-phase intrusive body of Late Jurassic age. Crystallization age for a zircon of 150±1 Ma and a cooling age for a hornblende of 144±1 Ma indicate a protracted period of high temperature. The SVPC is irregularly shaped, covers <15 km2, and is believed to be in the western limb of a post-Nevadan syncline, with an easterly dip estimated at about 45°. The SVPC penetrated the Orleans Fault and intruded and contact metamorphosed the upper and lower plates of the thrust. The Orleans Fault is a major tectonic boundary separating the Western Paleozoic …15>
The Geology Of The Vermont Valley And The Western Flank Of The Green Mountains Between Dorset Mountain And Wallingford, Vermont, Rolf Herrmann
The Geology Of The Vermont Valley And The Western Flank Of The Green Mountains Between Dorset Mountain And Wallingford, Vermont, Rolf Herrmann
Geology Theses and Dissertations
The carbonate sequence of the Vermont Valley has been generally believed to lie on the east limb of a major unfaulted syncline ("Middlebury Synclinorium"), and the exposed Precambrian basement and overlying cover rocks of the Green Mountain massif on the west limb of the adjacent major unfaulted anticline ("Green Mountain Anticlinorium"). Except for the Basal Thrust of the Taconic Allochthon, all faults shown on previous maps die out north of Dorset Mountain.
In contrast, detailed mapping for this thesis in the Vermont Valley and the western flank of the Green Mountain massif has revealed several major north/south trending thrust faults, …
Geologic Highway Cross Sections: Interstate Highway 64 Farmers To Catlettsburg, Kentucky, Donald R. Chesnut Jr.
Geologic Highway Cross Sections: Interstate Highway 64 Farmers To Catlettsburg, Kentucky, Donald R. Chesnut Jr.
Map and Chart--KGS
Highway roadcuts along Interstate Highway 64 from Farmers to Catlettsburg, Kentucky, provide scientifically significant exposures of rocks of Devonian, Mississippian, and Pennsylvanian ages in northeastern Kentucky. The roadcut exposures offer easy access to a variety of stratigraphic units and are ideal for educational field trips. However, Kentucky law prohibits vehicles from stopping on the shoulders of limited- access highways except in case of emergency, so any planned field trips must be coordinated with State authorities. Several national and international field trips, as well as many out-of-State university field trips, have examined these exposures. In addition, scientific studies involving carbonate sedimentology, …
Stratigraphic And Structural Framework Of The Carboniferous Rocks Of The Central Appalachian Basin In Kentucky, Donald R. Chesnut Jr.
Stratigraphic And Structural Framework Of The Carboniferous Rocks Of The Central Appalachian Basin In Kentucky, Donald R. Chesnut Jr.
Bulletin--KGS
A series of seven cross sections across the Central Appalachian Basin in Kentucky, Tennessee, Virginia, West Virginia, and Ohio was constructed in order to determine a stratigraphic and structural framework of the Carboniferous rocks for the basin. Oil and gas well logs, coal-company core descriptions, measured sections, and mapping of surface geology were used to construct these sections. New surface and subsurface faults, folds, and flexures were identified.
New, formal and informal lithostratigraphic nomenclature was introduced to clarify the stratigraphic framework. Formalized nomenclatural changes are (1) elevating Breathitt Formation to Breathitt Group, (2) dropping the Lee Formation, (3) elevating four …
Available Coal Resources Of The Booneville 7.5–Minute Quadrangle, Owsley County, Kentucky, Gerald A. Weisenfluh, R. E. Andrews, John K. Hiett, Stephen F. Greb, Richard E. Sergeant, Donald R. Chesnut Jr.
Available Coal Resources Of The Booneville 7.5–Minute Quadrangle, Owsley County, Kentucky, Gerald A. Weisenfluh, R. E. Andrews, John K. Hiett, Stephen F. Greb, Richard E. Sergeant, Donald R. Chesnut Jr.
Information Circular--KGS
The Booneville Quadrangle lies within the Southwestern Reserve District of the Eastern Kentucky Coal Field. Six coal beds in the quadrangle have been commercially developed, mainly by surface mining methods, and comprise the basis of this Coal Availability Study. These beds are, in descending stratigraphic order, Copland, Whitesburg, Amburgy, Upper Elkhorn No. 3, Jellico and Manchester. A computerized Geographic Information System (GRASS) was used to calculate estimates of original, mined-out and remaining resources, restrictions to mining and available resources.
Groundwater Levels In Nebraska, 1991, Gregory V. Steele, Perry B. Wigley
Groundwater Levels In Nebraska, 1991, Gregory V. Steele, Perry B. Wigley
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Metamorphic Petrology And Gravity Studies Of The Archean English River Subprovince, Western Superior Province, Manitoba And Ontario, Canada, Moira E. Campion
Metamorphic Petrology And Gravity Studies Of The Archean English River Subprovince, Western Superior Province, Manitoba And Ontario, Canada, Moira E. Campion
Theses and Dissertations
The tectonic development of the English River Subprovince (ERSP) of the Superior Province in Ontario and Manitoba, as with other Archean medium-high grade metasedimentary/gneiss terranes, is an area of active research. Geochemical and geophysical data were collected during this study to determine the metamorphic conditions of formation, and the relationship between surface and subsurface geology. The results of metamorphic studies by Henke (1984), Baumann (1985), Chipera (1985) and Roob (1987) were also integrated with those of this study. The temperatures and pressures of formation, as well as detailed gravity characteristics, constrain the postulated tectonic model for the ERSP.
Chemical data …
The Stratigraphy And Sedimentology Of The Sentinel Butte Formation (Paleocene) In South-Central Williams County, North Dakota, Wesley D. Peck
The Stratigraphy And Sedimentology Of The Sentinel Butte Formation (Paleocene) In South-Central Williams County, North Dakota, Wesley D. Peck
Theses and Dissertations
Approximately 163 meters (535 feet) of the Paleocene Sentinel Butte Formation crop out in southcentral Williams county, North Dakota. To determine their mode of deposition and stratigraphic position within the formation, twelve stratigraphic sections were measured. These strata were deposited in alternating fluvial and lacustrine environments as determined by sedimentary structures, lithology, lithologic sequences, and fossil occurrences. A fining upward trend in grain size of the tabular sandstones, and the identification of epsilon cross-stratification in the tabular sandstones support a fluvial origin for some of the strata. The strongest evidence for the interpretation of lacustrine deposition is the presence of …
Effect Of Sinkholes On Soil Moisture And Ground Water Recharge At An Abandoned Underground Coal Mine Near Wilton, North Dakota, Michael M. Sonderman
Effect Of Sinkholes On Soil Moisture And Ground Water Recharge At An Abandoned Underground Coal Mine Near Wilton, North Dakota, Michael M. Sonderman
Theses and Dissertations
Subsidence at abandoned underground mines in south-central and southwest North Dakota has produced numerous sinkholes. Previous studies in the Northern Great Plains have suggested depression-focused recharge may be a significant ground water recharge mechanism in this region. Thus, sinkholes may increase soil moisture and ground water recharge. Current reclamation practices include filling sinkholes with non-topsoil fill material. However, the benefits of increases in soil moisture and ground water supplies may outweigh the benefits of expensive reclamation. The purpose of this study was to determine whether soil moisture and, hence, the potential for ground water recharge, was greater in sinkholes than …
Development Of Organic Mud Mounds In A Mixed Carbonate-Siliciclastic Depositional Environment, John M. Ryan, Doy L. Zachry
Development Of Organic Mud Mounds In A Mixed Carbonate-Siliciclastic Depositional Environment, John M. Ryan, Doy L. Zachry
Journal of the Arkansas Academy of Science
Organic carbonate mud mounds in the Prairie Grove Member of the Hale Formation developed on a shallow shelf swept by competent tidal currents. The mounds were stabilized by crustose red algae and fostered a sheltered setting where phylloid algae and marine invertebrates could thrive. The mounds supplied skeletal sediment locally to the intermound areas as well as regionally along the stable platform. This sediment mixed with quartz sand to form a major mixed carbonate-siliciclastic system in northwestern Arkansas.
Distribution Of Foraminifera And Pollen In Coastal Depositional Environments Of The Southern Delmarva Peninsula, Virginia, U.S.A., Han Jun Woo
OES Theses and Dissertations
The coastal zone of the southern Delmarva Peninsula exhibits a wide variety of barrier island system subenvironments. This study investigates whether 20 a priori subenvironments can be distinguished from each other on the basis of abiotic environmental variables, pollen assemblages, living foraminiferal populations, and total (living plus dead) foraminiferal assemblages.
The physical data collected from the coastal zone were subjected to canonical variate analysis which discriminated 83% of the stations in 19 groups. These groups were clustered into two internally overlapping sets which represented the inside and outside of the inlet.
Twenty-two pollen types were found in low-energy marsh and …