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Articles 571 - 600 of 1258
Full-Text Articles in Geology
Cedar County Test Hole Logs, Raymond R. Burchett
Cedar County Test Hole Logs, Raymond R. Burchett
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Cuming County Test Hole Logs, Raymond R. Burchett, Frank A. Smith
Cuming County Test Hole Logs, Raymond R. Burchett, Frank A. Smith
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Geology And Mineral Resources Of Boone, Greeley, Nance, And Wheeler Counties, Nebraska, Raymond R. Burchett
Geology And Mineral Resources Of Boone, Greeley, Nance, And Wheeler Counties, Nebraska, Raymond R. Burchett
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Resource Notes-Academic Year 1992-93
Resource Notes-Academic Year 1992-93
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Resource News-July/August 1993
Resource News-July/August 1993
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Niobrara River Basin Geological References, Including Parts Of South Dakota Both In And Outside Of The Basin, Robert F. Diffendal Jr.
Niobrara River Basin Geological References, Including Parts Of South Dakota Both In And Outside Of The Basin, Robert F. Diffendal Jr.
Conservation and Survey Division: Faculty and Staff Publications
Includes Niobrara River Basin geological references, including parts of South Dakota both in and outside of the basin.
Groundwater-Level Changes In Nebraska, 1991, Gregory V. Steele, Perry B. Wigley
Groundwater-Level Changes In Nebraska, 1991, Gregory V. Steele, Perry B. Wigley
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Depositional Environments And Paleoecology Of The Lower Ordovician Pogonip Group, Opd Unit, Arrow Canyon Range, Clark County, Nevada, Jeffrey K. Donovan
Depositional Environments And Paleoecology Of The Lower Ordovician Pogonip Group, Opd Unit, Arrow Canyon Range, Clark County, Nevada, Jeffrey K. Donovan
UNLV Theses, Dissertations, Professional Papers, and Capstones
The Opd Unit of the Pogonip Group is a slope-forming carbonate sequence that crops out in the Arrow Canyon Range 75 miles north of Las Vegas, Nevada. It is composed mainly of grainstones, packstones, and intraformational conglomerates and also contains Calathium-bearing bioherms composed dominantly of wackestones. These rocks were deposited in a shallow-water, high-energy, subtidal, tropical marine environment. Nuia and Nuia-crinoid shoals developed on this shallow ramp and the area was frequently disturbed by storms.
Calathium-dominated carbonate mudmounds emerged on the Nuia and Nuia-crinoid shoals. Although Calathium dominated the mounds on a macroscopic scale, the mounds …
Relation Of Groundwater Fluoride Concentrations To Sediment Mineralogy, Potomac Formation (Cretaceous), Southeastern Virginia, Paul Anthony Maciuika
Relation Of Groundwater Fluoride Concentrations To Sediment Mineralogy, Potomac Formation (Cretaceous), Southeastern Virginia, Paul Anthony Maciuika
OES Theses and Dissertations
Thirty-seven Early cretaceous sediment samples of the Potomac Formation were obtained from four cores to determine if fluoride bearing minerals are responsible for elevated fluoride concentrations in Potomac Formation groundwaters of southeastern Virginia. Investigative methods included total sediment fluoride and particle size analysis, semiquantitative mineralogical analysis (achieved by X-Ray Diffraction) and statistical methods (cluster, canonical and regression analysis). The sediments showed wide variation in textures, ranging from clean sands and gravels to silty clays. Sediment mineralogies were dependent on the prevailing size fraction, with quartz and feldspar dominating the sand and silt fractions, muscovite primarily being found in the silt …
Hydrogeology Of Parts Of The Twin Platte And Middle Republican Natural Resources Districts, Southwestern Nebraska, J. W. Goeke, J. M. Peckenpaugh, R. E. Cady, J. T. Dugan, R. A. Engberg
Hydrogeology Of Parts Of The Twin Platte And Middle Republican Natural Resources Districts, Southwestern Nebraska, J. W. Goeke, J. M. Peckenpaugh, R. E. Cady, J. T. Dugan, R. A. Engberg
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
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. …
Resource News-May/June 1992
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
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.
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 …
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.
Groundwater-Level Changes In Nebraska, Predevelopment To Fall 1992, Conservation Survey Division, U.S. Geological Survey
Groundwater-Level Changes In Nebraska, Predevelopment To Fall 1992, Conservation Survey Division, U.S. Geological Survey
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Dixon County Test Hole Logs, Raymond R. Burchett, Frank A. Smith
Dixon County Test Hole Logs, Raymond R. Burchett, Frank A. Smith
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Greeley County Test Hole Logs, Raymond R. Burchett, Frank A. Smith
Greeley County Test Hole Logs, Raymond R. Burchett, Frank A. Smith
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Nance County Test Hole Logs, Raymond R. Burchett, Frank A. Smith
Nance County Test Hole Logs, Raymond R. Burchett, Frank A. Smith
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Boone County Test Hole Logs, Raymond R. Burchett, Frank A. Smith
Boone County Test Hole Logs, Raymond R. Burchett, Frank A. Smith
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Wheeler County Test Hole Logs, Raymond R. Burchett
Wheeler County Test Hole Logs, Raymond R. Burchett
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Resource Notes-Academic Year 1991-92
Resource Notes-Academic Year 1991-92
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Resource News-January/February 1992
Resource News-January/February 1992
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Resource News-March/April 1992
Resource News-March/April 1992
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Resource News-July/August 1992
Resource News-July/August 1992
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Mineral Resource Map Of Nebraska, R. R. Burchett
Mineral Resource Map Of Nebraska, R. R. Burchett
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Geologic Bedrock Map Of Nebraska, R. R. Burchett
Geologic Bedrock Map Of Nebraska, R. R. Burchett
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Description Of Rocks From A Core Drilled At A Potential Low-Low Level Radioactive Waste Site In Nemaha County, R. R. Burchett
Description Of Rocks From A Core Drilled At A Potential Low-Low Level Radioactive Waste Site In Nemaha County, R. R. Burchett
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
A Paleoenvironmental Analysis Based On Ostracode Assemblages From The Late Pliocene Tuapaktushak And Middle Pleistocene Karmuk Members Of The Gubik Formation Of The Arctic Coastal Plain, Western Alaska, D. E. Loehrke
OES Theses and Dissertations
This study records and analyzes ostracode assemblages recovered from sediments assigned to the Late Pliocene Tuapaktushak and Middle Pleistocene Karmuk members of the Gubik Formation in the Skull Cliff area of the Arctic Coastal Plain in western Alaska. Forty-three species were identified from 47 samples (25 from the Tuapaktushak Member and 23 from the Karmuk Member). Samples were grouped by Q-mode cluster analysis and by member assignment for the purpose of analysis.
Paleoenvironmental analyses of ostracode assemblages representative of each cluster suggest all samples, regardless of cluster membership, were deposited in similar marine environments where water depths were in the …