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University of Nebraska - Lincoln

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Articles 4171 - 4200 of 4538

Full-Text Articles in Earth Sciences

Basic Data Report Lower Cedar River Drainage Basin, Nebraska, J.B. Hyland Jul 1961

Basic Data Report Lower Cedar River Drainage Basin, Nebraska, J.B. Hyland

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Field Conference On The Tertiary And Pleistocene Of Western Nebraska (Guide Book For The Ninth Field Conference Of The Society Of Vertebrate Paleontology), C. Bertrand Schultz, Thompson M. Stout, Charles H. Falkenbach, Lloyd G. Tanner, Harold J. Cook, Alvin Leonard Lugn Jul 1961

Field Conference On The Tertiary And Pleistocene Of Western Nebraska (Guide Book For The Ninth Field Conference Of The Society Of Vertebrate Paleontology), C. Bertrand Schultz, Thompson M. Stout, Charles H. Falkenbach, Lloyd G. Tanner, Harold J. Cook, Alvin Leonard Lugn

Department of Earth and Atmospheric Sciences: Faculty Publications

This Field Conference is scheduled for five days, July 31-August 3 (main excursion) and August 4 (post-conference excursion), 1961. Its purpose is to consider recent work and problems in stratigraphy and vertebrate paleontology concerned with deposits ranging in age from Oligocene through Pleistocene, in western Nebraska. The Guide Book is the Ninth issued by sponsoring institutions for the Society of Vertebrate Paleontology (the others having been published in 1941, 1947, 1948, 1950, 1951, 1'953, 1956, and 1958). It thus commemorates the 20th Anniversary of the First Field Conference of the Society, as well as the 90th Anniversary of the establishment …


Water Levels In Observation Wells In Nebraska 1960, C.F. Keech Mar 1961

Water Levels In Observation Wells In Nebraska 1960, C.F. Keech

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Microorganisms And Soil Structure, T. M. Mccalla, F. A. Haskins Jan 1961

Microorganisms And Soil Structure, T. M. Mccalla, F. A. Haskins

Department of Agronomy and Horticulture: Faculty Publications

SUMMARY

Good stable soil structure is valuable for promoting the growth of plants and micro-organisms by permitting enhanced aeration and water penetration and by decreasing erosion under some conditions.

Micro-organisms influence water percolation through the soil. They may plug up soil pores with byproducts of growth and reduce water percolation. On the other hand, if a soil containing a large amount of microbial products is stirred and allowed to dry, then the percolation may be high.

Micro-organisms are involved in stabilizing soil structure by their products of decomposition and their cellular binding material, such as mycelia. Microorganisms differ greatly in …


Wells In Fillmore County, Nebraska, C.F. Keech Nov 1960

Wells In Fillmore County, Nebraska, C.F. Keech

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Groundwater Map Of Nebraska, November 1960, E. C. Reed, V. H. Dreeszen Nov 1960

Groundwater Map Of Nebraska, November 1960, E. C. Reed, V. H. Dreeszen

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Wells In Hamilton County, Nebraska, C.F. Keech Oct 1960

Wells In Hamilton County, Nebraska, C.F. Keech

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Water Levels In Observation Wells In Nebraska, 1959, C. F. Keech May 1960

Water Levels In Observation Wells In Nebraska, 1959, C. F. Keech

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


The Geological Section Of Nebraska, E. C. Reed Jul 1959

The Geological Section Of Nebraska, E. C. Reed

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


On The Status Of Theocampe Haeckel, And Certain Similar Genera, Benjamin H. Burma Jul 1959

On The Status Of Theocampe Haeckel, And Certain Similar Genera, Benjamin H. Burma

Department of Earth and Atmospheric Sciences: Faculty Publications

This paper is a revision of the generic nomenclature of a few radiolarian genera whose species are good zone and index fossils. The following genera are revised more or less extensively: Sethamphorus, Sethocephala, Dictyocephalus, Theocampe, and Tricolocampe. The following names are reduced to synonomy: Dictyocryphalus, Cryptocephalus, Dictyoprora (1882), Platycryphalus, Dictyoprora (1887), Theocamptra, Theocampana, Tricolocampium, Tricolocamptra, and Theocampula. Diabolocampe is described as a new genus.


Geology Of The Upper Middle Creek Area Huerfano County, Colorado, J. H. Copeland May 1959

Geology Of The Upper Middle Creek Area Huerfano County, Colorado, J. H. Copeland

Open Access Master's Theses (through 2010)

The Sangre de Cristo Mountains of Colorado and New Mexico are, geologically speaking, relatively unknown. The equivocal nature of our knowledge of the range was a primary reason for studying a portion of it in some detail. Most of the previous studies have been concerned with the northern part of the range in Colorado, in the general area between Salida and La Veta Pass. This work has indicated that the complicated structure which characterizes the northern part of the range becomes simpler to the south. Therefore, a second objective of the current study has been to test this hypothesis. Thirdly, …


Water Levels In Observation Wells In Nebraska, 1958, C. F. Keech May 1959

Water Levels In Observation Wells In Nebraska, 1958, C. F. Keech

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Geologic And Ground-Water Reconnaissance Of The Loup River Drainage Basin Nebraska, R. T. Sniegocki, R. H. Langford Jan 1959

Geologic And Ground-Water Reconnaissance Of The Loup River Drainage Basin Nebraska, R. T. Sniegocki, R. H. Langford

United States Geological Survey: Publications

The Loup River and its tributaries drain an area of about 15,230 square miles in central Nebraska. The upper three-fifths of the drainage basin is in the Sand Hills region of Nebraska, and the lower two-fifths is in the loess plains and hills region. An eastward-thinning wedge of semiconsolidated and unconsolidated deposits of Tertiary and Quaternary age underlies the surficial dune sand and loess. These deposits, which are recharged by infiltrating precipitation, contain a tremendous volume of water at least 400 million acre-feet and annually discharge about 1.7 million acre-feet into streams. Although wells supply nearly all the water used …


Engineer Intelligence Study No. 191, Terrain Analysis, Alaska Slope Region, Alaska, 1959, Military Geography Branch, Usgs, Robert Bolin , Depositor Jan 1959

Engineer Intelligence Study No. 191, Terrain Analysis, Alaska Slope Region, Alaska, 1959, Military Geography Branch, Usgs, Robert Bolin , Depositor

United States Department of Defense Military Intelligence

The summary on Page 5 is paraphrased as follows. This digital document is a generalized description of the Arctic Slope region -- an area covering approximately 70,000 square miles. Access to the region and the feasibility of various access routes are discussed. Location and extent of natural fuel supplies are given. Factors controlling outdoor work feasibility are summarized graphically on Page 19. A terrain analysis of each of the three major physiographic provinces of the region. Those provinces are the Arctic Coastal Plain, Arctic Foothills, and Brooks Range provinces. Geographic factors which affected cross-country movement, construction, and water supply within …


An Iron Fulgurite From Nebraska, C. M. Riley Jan 1959

An Iron Fulgurite From Nebraska, C. M. Riley

Bulletin of the University of Nebraska State Museum (1924–2023)

From the time of the ancients man has been impressed with the force of lightning and its effect on the rocks at the surface of the earth. It was Saussure in 1786 who first wrote a scientific account of a true fulgurite, and a wealth of literature has been written about the subject since this time. Many unusual fulgurites have been described, some of which may not truly be the result of lightning. The iron fulgurite is a strange conical object about 3 inches high composed mainly of tiny spheres and filaments of metallic iron intermixed with a small amount …


Boone County Preliminary Ground Water Study 1959 (Gm-14): Svoboda, G.R. Conservation And Survey Division , Size 8.5" X 11"., G.R. Svoboda Jan 1959

Boone County Preliminary Ground Water Study 1959 (Gm-14): Svoboda, G.R. Conservation And Survey Division , Size 8.5" X 11"., G.R. Svoboda

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Nebraska Groundwater Relation To Median, Fall 1958 Oct 1958

Nebraska Groundwater Relation To Median, Fall 1958

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Groundwater Map Of Nebraska Showing Relation Of Fall 1959 Readings To Median Water Level Measurement, E. C. Reed Oct 1958

Groundwater Map Of Nebraska Showing Relation Of Fall 1959 Readings To Median Water Level Measurement, E. C. Reed

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Water Levels In Observation Wells In Nebraska, 1957, C. F. Keech Apr 1958

Water Levels In Observation Wells In Nebraska, 1957, C. F. Keech

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Oil In Nebraska Jan 1958

Oil In Nebraska

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Total Number Of Irrigation Wells Located In Nebraska Counties As Of 1958 Jan 1958

Total Number Of Irrigation Wells Located In Nebraska Counties As Of 1958

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Photograph Of Relief Model Map Of Nebraska, Conservation And Survey Division Jan 1958

Photograph Of Relief Model Map Of Nebraska, Conservation And Survey Division

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Nebraska Groundwater Level (Decline & Rise) As Of December 1957., E. C. Reed Dec 1957

Nebraska Groundwater Level (Decline & Rise) As Of December 1957., E. C. Reed

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Preliminary Estimate Of The Underflow Across The South Dakota-Nebraska State Line In The Niobrara River And Ponca Creek Drainage Basins, E. C. Reed, C. F. Keech Nov 1957

Preliminary Estimate Of The Underflow Across The South Dakota-Nebraska State Line In The Niobrara River And Ponca Creek Drainage Basins, E. C. Reed, C. F. Keech

Conservation and Survey Division: Faculty and Staff Publications

The purpose of this paper is to estimate the amount of ground water flowing across the South Dakota-Nebraska State line within the Niobrara River basin, including the Ponca Creek basin. The study was made at the request of the Niobrara River Compact Commission. The estimates fiven in the paper are preliminary and subject to revision.


Industrial Wastes: Bio-Assays For Control Of Industrial Effluents, Croswell Henderson, Clarence M. Tarzwell Sep 1957

Industrial Wastes: Bio-Assays For Control Of Industrial Effluents, Croswell Henderson, Clarence M. Tarzwell

United States Environmental Protection Agency: Publications

Waste effluents from many industries are toxic to fish and other aquatic life. The control or treatment of these wastes for safe release into receiving waters presents a problem of consider able magnitude.

Much effort has been expended by some industries to solve this problem, primarily through chemical analysis for possible toxic components and then generally by a search of the literature to find out how toxic a particular component may be. Unfortunately, this approach has not been successful, nor can it be expected to be productive of satisfactory answers.


Medial Pleistocene Fossil Vertebrate Localities In Nebraska, C. Bertrand Schultz, Lloyd G. Tanner Jan 1957

Medial Pleistocene Fossil Vertebrate Localities In Nebraska, C. Bertrand Schultz, Lloyd G. Tanner

Bulletin of the University of Nebraska State Museum (1924–2023)

The accurate geologic dating of Pleistocene vertebrate localities which occur outside the glaciated regions has always been difficult. Several new fossil localities in Nebraska now provide data for a better understanding of the paleoecology and faunal evidence of the medial Pleistocene of the Great Plains region.

A fossil quarry, containing the remains of both vertebrates and invertebrates, has been discovered in south-central Nebraska (11/2 miles south and west of Angus in Nuckolls County). The fossils are preserved in Sappa silts in a lime concentration zone (C horizon) of a Yarmouth paleosol. The calcium carbonate appears to have been responsible for …


Log Of Test Holes Frenchman Creek Basin Nebraska, C. F. Creech Jan 1957

Log Of Test Holes Frenchman Creek Basin Nebraska, C. F. Creech

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Northeastern Cherry And Western Keya Paha County Preliminary Ground Water Study 1957 (Gm-26): Reed, E.C. Conservation And Survey Division , Size 8.5" X 11"., E.C. Reed Jan 1957

Northeastern Cherry And Western Keya Paha County Preliminary Ground Water Study 1957 (Gm-26): Reed, E.C. Conservation And Survey Division , Size 8.5" X 11"., E.C. Reed

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Influence Of Various Factors On Aggregation Of Peorian Loess By Microorganisms, T. M. Mccalla, Francis A. Haskins, E. F. Frolik Jan 1957

Influence Of Various Factors On Aggregation Of Peorian Loess By Microorganisms, T. M. Mccalla, Francis A. Haskins, E. F. Frolik

Department of Agronomy and Horticulture: Faculty Publications

Soil structure is important in the attainment of adequate aeration for the aerobic microorganisms whose activities maintain such higher plant nutrients as sulfur, phosphorus, and nitrogen in a highly oxidized and thus readily available state. Good soil structure is also necessary for soil and water conservation, Under Nebraska conditions microorganisms and their decomposition products constitute a major source of soil-aggregating agents. The decomposition of crop residues and plant roots is important in the nutrition of these aggregating microorganisms. Other microorganisms, however, also utilize crop residues and plant roots, and they may decompose the aggregating agents as well, so that the …


Stream Pollution- Aquatic Macro-Invertebrate Communities As Indicators Of Organic Pollution In Lytle Creek, Arden R. Gaufin, Clarence M. Tarzwell Jul 1956

Stream Pollution- Aquatic Macro-Invertebrate Communities As Indicators Of Organic Pollution In Lytle Creek, Arden R. Gaufin, Clarence M. Tarzwell

United States Environmental Protection Agency: Publications

Year-round field studies of the com position and ecology of stream communities associated with the purification of organic wastes in streams were initiated on Lytle Creek in October, 1949. This creek, which is located about 45 miles northeast of Cincinnati, Ohio, is a tributary of the Little Miami River. Its drainage basin comprises 27 sq. mi., a third of which is contained within the city limits of Wilmington, Ohio, a city of some 7,412 persons