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Articles 1 - 20 of 20
Full-Text Articles in Geology
The Amphibians And Reptiles Of Nebraska, George E. Hudson
The Amphibians And Reptiles Of Nebraska, George E. Hudson
Conservation and Survey Division
No abstract provided.
Overview Of Nebraska And The Regional Aquifer From Proceedings Of The 1985 Water Resources Seminar Series, Robert F. Diffendal Jr.
Overview Of Nebraska And The Regional Aquifer From Proceedings Of The 1985 Water Resources Seminar Series, Robert F. Diffendal Jr.
Robert F. Diffendal, Jr., Publications
During each spring semester, the Nebraska Water Resources Center sponsors a Water Resources Seminar Series at the University of Nebraska-Lincoln. The 1985 seminar series was entitled "Aspects of Groundwater Quality." This article appeared in the proceedings.
Groundwater Levels In Nebraska, 1984, Michael J. Ellis, Darryll T. Pederson
Groundwater Levels In Nebraska, 1984, Michael J. Ellis, Darryll T. Pederson
Conservation and Survey Division
No abstract provided.
Aspects Of Groundwater Quality Proceedings 1985 Water Resources Seminar Series
Aspects Of Groundwater Quality Proceedings 1985 Water Resources Seminar Series
Conservation and Survey Division
During each spring semester, the Nebraska Water Resources Center sponsors a Water Resources Seminar Series at the University of Nebraska - Lincoln. The 1985 seminar series was entitled "Aspects of Groundwater Quality".
Groundwater Levels In Nebraska 1984, Michael J. Ellis, Darryll T. Pederson
Groundwater Levels In Nebraska 1984, Michael J. Ellis, Darryll T. Pederson
Conservation and Survey Division
No abstract provided.
Classification, Paleoecology, And Biostratigraphy Of Crinoids From The Stull Shale (Late Pennsylvanian) Of Nebraska, Kansas, And Iowa, Roger K. Pabian, Harrell L. Strimple
Classification, Paleoecology, And Biostratigraphy Of Crinoids From The Stull Shale (Late Pennsylvanian) Of Nebraska, Kansas, And Iowa, Roger K. Pabian, Harrell L. Strimple
Bulletin of the University of Nebraska State Museum
Thirteen species of crinoids representing the families Diphuicrinidae, catacrinidae, Pirasocrinidae, Erisocrinidae, Cromyocrinidae, Cymbiocrinidae, Scytalocrinidae, and Ampelocrinidae have been collected from the Stull Shale Member of the Kanwaka Formation in the Shawnee Group of the Virgil Series (Upper Pennsylvanian) from near Weeping Water and Plattsmouth, Nebraska, and near Pacific Junction, Iowa. Exposures of the Stull Shale near Melvern, Kansas, have yielded 14 species of crinoids representing the families Diphuicrinidae, Catacrinidae, Pirasocrinidae, Lophocrinidae Allagecrinidae, Cymbiocrinidae, Erisocrinidae, Apographiocrinidae, and Stellarocrinidae. All but two of the species present in the Stull Shale have been previously reported from other stratigraphic horizons, including the Vinland Shale …
Soils And The Location Of Cacao Orchards At A Maya Site In Western Belize, Daniel R. Muhs, Robert R. Kautz, J. Jefferson Mackinnon
Soils And The Location Of Cacao Orchards At A Maya Site In Western Belize, Daniel R. Muhs, Robert R. Kautz, J. Jefferson Mackinnon
United States Geological Survey: Staff Publications
Cacao was one of the most important crops of the lowland Maya. Ethnohistoric sources document that the Postclassic-Colonial Period Maya settlement of Tipu in western Belize was an important cacao-growing center, yet evidence of where the cacao was grown is not apparent. We analysed the suitability of floodplain, terrace, and bedrock soils for cacao cultivation. Our results indicate that the soils most likely to have been used for cacao growth were those on the modem floodplain of the Macal River, based on their suitable physical and chemical properties. In addition, buried stone walls of Late Classic or Postclassic age that …
An Evaluation Of Uranium-Series Dating Of Fossil Echinoids From Southern California Pleistocene Marine Terraces, Daniel R. Muhs, Los Angeles County Museum Of Natural History, Los Angeles, Ca
An Evaluation Of Uranium-Series Dating Of Fossil Echinoids From Southern California Pleistocene Marine Terraces, Daniel R. Muhs, Los Angeles County Museum Of Natural History, Los Angeles, Ca
United States Geological Survey: Staff Publications
Fossil sea urchins (Strongylocentrotus) from Pleistocene marine terraces on the southern California Channel Islands have been dated by the uranium-series method in order to test the suitability of echinoids for dating marine terraces. Results indicate that urchin plates and spines do not behave as closed systems with respect to both uranium and thorium. Calculated ages based on these data do not agree with uranium-series ages (120,000 and 127,000 yrs) obtained previously from corals from the same localities. Thus, fossil sea urchins (Strongylocentrotus) are not considered suitable for uranium-series dating of Pleistocene marine terrace deposits.
Nebraska Mineral Operations Review, 1984, Raymond R. Burchett, Duane A. Eversoll
Nebraska Mineral Operations Review, 1984, Raymond R. Burchett, Duane A. Eversoll
Conservation and Survey Division
No abstract provided.
Annual Outflow Of Water From Nebraska, 1950-1984, Conservation Survey Division
Annual Outflow Of Water From Nebraska, 1950-1984, Conservation Survey Division
Conservation and Survey Division
No abstract provided.
Cenozoic Paleogeography Of Western Nebraska, James B. Swinehart, Vernon F. Souders, Harold M. Degraw, Robert F. Diffendal Jr.
Cenozoic Paleogeography Of Western Nebraska, James B. Swinehart, Vernon F. Souders, Harold M. Degraw, Robert F. Diffendal Jr.
Robert F. Diffendal, Jr., Publications
The Cenozoic strata of western Nebraska are an extensive sequence of continental deposits that extend eastward from the Hartville, Laramie, and Front Range uplifts and southeast from the Black Hills. The oldest Cenozoic sediments (Chadron Formation, White River Group) are Early Oligocene alluvial valley fills. Subsequent to filling of these drainages and continuing for about the next 7 million years, landscape development in western Nebraska was dominated by eolian deposition of tremendous volumes of rhyolitic volcanic ash derived from western eruptions. A plain of low relief, with only an occasional narrow drainage heading in the western highlands, was maintained during …
Keith County, Nebraska, Map Series, Robert F. Diffendal Jr., Mark S. Kuzila, J. R. Culver, Harold M. Degraw, R. R. Burchett, M. P. Carlson, T. Eversoll, William D. Gosnold, Nebraska Geological Survey
Keith County, Nebraska, Map Series, Robert F. Diffendal Jr., Mark S. Kuzila, J. R. Culver, Harold M. Degraw, R. R. Burchett, M. P. Carlson, T. Eversoll, William D. Gosnold, Nebraska Geological Survey
Robert F. Diffendal, Jr., Publications
Keith County--List of Maps and Their Authors
Topography--United States Geological Survey
Index of 7.5' Topographic Quadrangles and Township Boundaries--R. F. Diffendal, Jr.
Generalized Soils Map--M. Kuzila and J. Culver
Approximate Loess Thickness--R. F. Diffendal, Jr.
Bedrock Geologic Map--R. F. Diffendal, Jr.
Volcanic Ash Localities--R. F. Diffendal, Jr.
Ogallala Vertebrate Faunal Sites--R. F. Diffendal, Jr.
Ogallala Group Outcrops--R. F. Diffendal, Jr.
White River Group Outcrops--R. F. Diffendal, Jr.
Conservation and Survey Division Test Hole Locations--R. F. Diffendal, Jr.
Oil and/or Gas Test Hole Locations--R. F. Diffendal, Jr.
Mineral Resources Localities--R. F. Diffendal, Jr.
Locations of Registered Irrigation Wells--R. F. Diffendal, Jr. …
Chemical Composition Of Ground Water In The Yucca Mountain Area, Nevada, 1971-84, Larry Benson, P. W. Mckinley
Chemical Composition Of Ground Water In The Yucca Mountain Area, Nevada, 1971-84, Larry Benson, P. W. Mckinley
Publications of the US Geological Survey
Fifteen test wells in the Yucca Mountain area of southern Nevada have been sampled for chemical analysis at least once during 1971-84. Samples were obtained by pumping water from the entire well bore (composite sample), and, in three instances, by pumping from one or more isolated intervals within a well bore. Sodium was the most abundant cation, and bicarbonate was the most abundant anion in all water samples. Samples from the deep carbonate aquifer penetrated by well UE-25p#l contained higher relative concentrations of calcium and magnesium than did samples from overlying volcanic tuffs. Concentrations of the stable isotopes of oxygen …
Atlas Illustrating The Characteristics Of Groundwater In Nebraska, Vince Dreeszen
Atlas Illustrating The Characteristics Of Groundwater In Nebraska, Vince Dreeszen
Conservation and Survey Division
No abstract provided.
Airborne Thermal Mapping Of A "Flow-Through" Lake In The Nebraska Sandhills, Donald Rundquist, Gene Murray, Lloyd Queen
Airborne Thermal Mapping Of A "Flow-Through" Lake In The Nebraska Sandhills, Donald Rundquist, Gene Murray, Lloyd Queen
Conservation and Survey Division
No abstract provided.
Concentration Of Nitrate-Nitrogen In Groundwater Central Platte Region, Nebrask 1984, M. E. Exner
Concentration Of Nitrate-Nitrogen In Groundwater Central Platte Region, Nebrask 1984, M. E. Exner
Conservation and Survey Division
No abstract provided.
Significant Rises And Declines In Nebraska Groundwater Levels (From Pre-Development As Of Fall 1984)/Registered Irrigation Wells In Nebraska (As Of January 1, 1985, Conservation Survey Division, U.S. Geological Survey
Significant Rises And Declines In Nebraska Groundwater Levels (From Pre-Development As Of Fall 1984)/Registered Irrigation Wells In Nebraska (As Of January 1, 1985, Conservation Survey Division, U.S. Geological Survey
Conservation and Survey Division
No abstract provided.
Transmissivity Of The Principal Aquifer In Nebraska
Transmissivity Of The Principal Aquifer In Nebraska
Conservation and Survey Division
No abstract provided.
Annual Outflow Of Water From Nebraska, 1950 - 1985 And Annual Inflow Of Water To Nebraska, 1950 - 1985, Conservation And Survey Division
Annual Outflow Of Water From Nebraska, 1950 - 1985 And Annual Inflow Of Water To Nebraska, 1950 - 1985, Conservation And Survey Division
Conservation and Survey Division
No abstract provided.