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Articles 58261 - 58290 of 59351
Full-Text Articles in Entire DC Network
Press Reports (1955), Walter A. Lawrance
Relation Of Nebraska Water-Level Measurements Made In 1955 To Median Water-Level Position, E. C. Reed
Relation Of Nebraska Water-Level Measurements Made In 1955 To Median Water-Level Position, E. C. Reed
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Report Of The State Geologist 1953-1954, Maine Geological Survey
Report Of The State Geologist 1953-1954, Maine Geological Survey
Maine Collection
Report of the State Geologist 1953-1954.
Maine Geological Survey - Maine Development Commission, Augusta, Maine - July 1955.
Contents: Joseph M. Trefethen -- Review of Maine Mineral Outlook / Henry W. Allen -- Limestone Investigations, 1953-54 / Wm.T. Forsyth -- Airbourne Magnetometer Survey in Eastern Maine / Gary M. Boone -- Petrology of the Farmington, Maine Area / Joseph M. Trefethen, Henry Allen, and Wm. T. Forsyth -- Scheelite Occurrences in Maine / Wm.T. Forsyth -- Beneficiation Tests on the Warren Sillimanite Gneiss / Wm. T. Forsyth -- Pyrrhotite Mineralization at Iron Hill, Gardiner, Maine / Joseph M. Trefethen -- …
Geology Of The Southern Part Of The Fra Cristobal Range, Sierra County, New Mexico, Samuel Thompson Iii
Geology Of The Southern Part Of The Fra Cristobal Range, Sierra County, New Mexico, Samuel Thompson Iii
Earth and Planetary Sciences ETDs
Emphasis has been placed in this work on the structural features of the southern part of the Fra Cristobal Range in order to extend the studies in the Caballo Mountains area and the McRae Canyon area. By mapping in detail the structure of the Fra Cristobal range it is hoped that a better understanding of the adjoining Rio Grande and Jornada del Muerto depressions may be reached. As an added contribution, a Permian section was measured as these rocks are relatively undeformed and very well exposed in some parts of the range.
The field mapping was done in the spring …
Classification Of Oligocene Sediments In Nebraska: A Guide For The Stratigraphic Collecting Of Fossil Mammals, C. Bertrand Schultz, Thompson M. Stout
Classification Of Oligocene Sediments In Nebraska: A Guide For The Stratigraphic Collecting Of Fossil Mammals, C. Bertrand Schultz, Thompson M. Stout
Bulletin of the University of Nebraska State Museum (1924–2023)
The Chadron and Brule formations constitute the White River Group in Nebraska and adjacent states. The Brule is divided into the Orella and Whitney members. The latter members are referred to the Medial and Late Oligocene (equivalents of the European Stampian and Aquitanian), while-the Chadron is equated with the Early Oligocene (Sannoisian). Each unit in Nebraska is subdivided into three parts (Lower, Middle, and Upper; or A, B, and C for the Chadron and Whitney, and A-B, C, and D for the Orella). Key beds such as fossil soils (paleosols), Purplish White beds, and volcanic ash layers, when considered with …
Hydrologic Data Collection Program For New Mexico, Ralph L. Strother
Hydrologic Data Collection Program For New Mexico, Ralph L. Strother
Civil Engineering ETDs
The objective of this thesis is to present a program for the collection of basic hydrologic data for the state of New Mexico. It is an expansion of the existing program which currently becomes more inadequate with the progressively extensive use of the water resources of the state. The need for hydrologic data for planning and operation of water use and control structures far exceeds that obtained by the existing program.
Types of data reported upon are climatological, stream flow, ground water, quality of water, suspended sediment, snow cover and reservoir, valley and channel sedimentation. For the purposes presented herein …
Geology Of A Portion Of The Hand Mine, Argenta Mining District, Beaverhead County, Montana, John Thomas Richards
Geology Of A Portion Of The Hand Mine, Argenta Mining District, Beaverhead County, Montana, John Thomas Richards
Bachelors Theses and Reports, 1928 - 1970
The Hand Mine is located in the Argenta Mining District near the town of Argenta. The area surrounding the Hand Mine is characterized by intense thrusting, folding, and igneous activity. The area mapped by the author is in the southeast portion of the mine and differs from the rest of the mine in that no commercial ore has been found. The writer concludes that the steep faulting and flatlying bodies are of two different ages, and that intense oxidation has altered the ore minerals to plumbojarosite.
Oxidized Copper Mineralization Along The Continental Fault Near Butte, Montana, Theodore H. Eyde
Oxidized Copper Mineralization Along The Continental Fault Near Butte, Montana, Theodore H. Eyde
Bachelors Theses and Reports, 1928 - 1970
Located in the fault zone of the Continental fault near the western edge of Boulder batholith of southwestern Montana the oxidized copper deposits are developed by three open pit mines, one of which is a presently in operation. Copper has been deposited by descending cold solutions which have leached copper from the surrounding quartz monzonite and deposited within the crushed fault zone. Local high grade 'bunches' of ore occur along narrow limonite veins, remnants of primary sulfide veins which have been enriched by the descending cold solutions.
The Salt Lake Group In Cache Valley, Utah And Idaho, Robert D. Adamson
The Salt Lake Group In Cache Valley, Utah And Idaho, Robert D. Adamson
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Fluvial and lacustrine sediments of great thickness accumulated in the intermountain basins of the western United States during Tertiary time. The Salt Lake group in northern Utah and parts of surrounding states is a conspicuous stratigraphic unit of these basins. The "beds of light color" in Morgan Valley in the Wasatch Mountains of northern Utah were named the "Salt Lake group" by Hayden (1869) because of similar occurrences in Salt Lake Valley and because he reasoned that the succession could be divided into formations. Similar rocks crop out in Ogden Valley, north of Morgan Valley, and in Cache Valley, Utah …
The Influence Of Soil Moisture Conditions On The Absorption Of Phosphorus By Plants From Calcareous Soils, T. J. Denman
The Influence Of Soil Moisture Conditions On The Absorption Of Phosphorus By Plants From Calcareous Soils, T. J. Denman
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Phosphorus is one of the major plant nutrients secured from the soil. The object of many investigations has been to discover the nature of the processes by which the soil supplies phosphorus to plants, and to determine the influence of soil factors upon these processes. Although much knowledge has been gained, these processes and the effects of soil factors upon them are still not clearly defined.
One factor which profoundly affects plant growth is the amount and relative availability of soil moisture. The results of some investigations have suggested that this factor may also have considerable influence on the absorption …
Geology At The Secondary School Level, William C. Scott
Geology At The Secondary School Level, William C. Scott
Journal of the Minnesota Academy of Science
No abstract provided.
Tamaracks And Their Relation To Glacial Geology - A Study Of The Rockville-Cold Spring Area, Gerald R. Ahlquist
Tamaracks And Their Relation To Glacial Geology - A Study Of The Rockville-Cold Spring Area, Gerald R. Ahlquist
Journal of the Minnesota Academy of Science
No abstract provided.
The Effect Of Land Reduction On Sea Level And Continental Area, Fred Boos Jr.
The Effect Of Land Reduction On Sea Level And Continental Area, Fred Boos Jr.
Journal of the Minnesota Academy of Science
No abstract provided.
Two Unusual Occurrences Of Microstylolites, Benjamin H. Burma, Charles M. Riley
Two Unusual Occurrences Of Microstylolites, Benjamin H. Burma, Charles M. Riley
Department of Earth and Atmospheric Sciences: Faculty Publications
Microstylolites are here reported in both quartzite and in welded tuff. Descriptions of these unusual occurrences and accompanying photomicrographs suggest difficulties in applying the widely held theory of pressure-solution for the origin of these features.
Great Salt Lake Diking Project, Large Plan, Hydrology And Quality Of Water Study, United States Department Of Interior, Bureau Of Reclamation
Great Salt Lake Diking Project, Large Plan, Hydrology And Quality Of Water Study, United States Department Of Interior, Bureau Of Reclamation
Elusive Documents
The purpose of this study was to determine the feasibility of diking a portion of the Great Salt Lake for purposes of using the fresh water for irrigation, industrial uses, and recreation. This study approached the problem only for a hydrologic and quality of water standpoint.
Paleosols Of The Oligocene Of Nebraska, C. Bertrand Schultz, Lloyd G. Tanner, Cyril Harvey
Paleosols Of The Oligocene Of Nebraska, C. Bertrand Schultz, Lloyd G. Tanner, Cyril Harvey
Bulletin of the University of Nebraska State Museum (1924–2023)
Prominent paleosol ("buried" or "fossil" soil) complexes occur at the top of the middle Orella, upper Orella, lower Whitney, and upper Whitney in the Brule formation of Nebraska; and at the top of the "Lower Oreodon," "Middle Oreodon," "Upper Oreodon," and "Leptauchenia" beds in the Brule deposits of South Dakota. These paleosols have regional distribution and appear to be of value in stratigraphic correlations. Major faunal breaks seem to coincide with important buried soil zones, thus indicating that certain paleosols actually represent unconformities. Some of the soils were developed on old land surfaces where deposition was practically at a standstill …
Industrial Wastes, Charles E. Renn
Industrial Wastes, Charles E. Renn
United States Environmental Protection Agency: Publications
This paper presents a summary of experiences with a variety of cyanogenic wastes. The work has attempted to evaluate the interaction of waste bearing waters and the environment in terms of waste disposal design requirements. In this, the approach is somewhat more critical than that commonly taken by fisheries biologists, conservationists, and others who have been concerned with the "preventive" aspects of waste disposal.
The first phases of the work were designed to discover the tolerable limits of certain waste components to fresh water fish. This was undertaken in 1950; in the interval the composition of the wastes has been …
Geology Of Devil's Den State Park, James E. Case, Francis B. Connelly
Geology Of Devil's Den State Park, James E. Case, Francis B. Connelly
Journal of the Arkansas Academy of Science
No abstract provided.
Brentwood Limestone Of Madison County, Arkansas, Vance O. Cook
Brentwood Limestone Of Madison County, Arkansas, Vance O. Cook
Journal of the Arkansas Academy of Science
No abstract provided.
Maine Geological Survey - Bulletin 6 : Pegmatites And Associated Rocks In The Newry Hill Area, Oxford County, Maine., Vincent E. Shainin, Louis F. Dellwig
Maine Geological Survey - Bulletin 6 : Pegmatites And Associated Rocks In The Newry Hill Area, Oxford County, Maine., Vincent E. Shainin, Louis F. Dellwig
Maine Collection
Maine Geological Survey - Bulletin 6 : Pegmatites and Associated Rocks in the Newry Hill Area, Oxford County, Maine.
Joseph M. Trefethen, State Geologist.
by Vincent E. Shainin, University of Maine and Louis F. Dellwig, U.S. Geological Survey.
Maine Development Commission, Augusta, Maine, 1955
Morphology And Systematic Position Of Some Anomalinid Foraminifera, Billy G. Deaver
Morphology And Systematic Position Of Some Anomalinid Foraminifera, Billy G. Deaver
Masters Theses
"Morphological studies of the following species are the basis for a partial revision of the Family Anomalinadae: Anomalina acuta Plummer, A. midwayensis (Plummer), A. pseudopapillosa Carsey, A. vulgaris (Plummer), Anomalinoides pinguis (Jennings), Cibicides alleni (Plummer), C. beaumontianus (d’Orbigny), c. harperi (Sandidge), Cibicidina danvillensis (Howe and Wallace), Planulina correcta (Carsey), and P. dumblei (Applin); a description of Stensioina americana Cushman and Dorsey, discorbid foraminifer, is included for comparison. The classificatory position and incomplete content of the family are: Superfamily Discorbidea; Family Anomalinidae; Subfamily Anomalininae (revised) -- with ventral supplementary apertures: Anomalina , Planulina ; Subfamily Cibicidinae -- with dorsal supplementary apertures: …
Stream Piracy And Glacial Diversion Of Little Missouri River, North Dakota, Emmett R. Schmitz
Stream Piracy And Glacial Diversion Of Little Missouri River, North Dakota, Emmett R. Schmitz
Theses and Dissertations
Bedrock river terraces, as much as 275 to 500 feet above the present Little Missouri, are remnants of a former floodplain. The presence of these former shallow valley floor (Little Missouri Terrace No. 4) along the pre-glacial channel and east and north of the Killdeer Mountains suggests several pre-glacial rivers.
Peripheral precipitation in advance of the Kansan-Illinoian glacier, head-ward erosion with consequent new gradient breached the divide between the pre-glacial Little Missouri River and the “Medicine Stone” River, (herein named, after a local landmark), which flowed eastward into pre-glacial Missouri River.
The history of that portion of the Little Missouri …
Subsurface Correlations Of The Cretaceous Greenhorn-Lakota Interval In North Dakota : A Study In Facies, Dan E. Hansen
Subsurface Correlations Of The Cretaceous Greenhorn-Lakota Interval In North Dakota : A Study In Facies, Dan E. Hansen
Theses and Dissertations
No abstract provided.
Addition Of Sodium Nitrate (1954), Walter A. Lawrance
Addition Of Sodium Nitrate (1954), Walter A. Lawrance
Walter Lawrance Papers
No abstract provided.
Benthal Deposits (1954), Walter A. Lawrance
Benthal Deposits (1954), Walter A. Lawrance
Walter Lawrance Papers
No abstract provided.
Odor Report (1954), Walter A. Lawrance
Press Reports (1954), Walter A. Lawrance
Analytical Data (1954), Walter A. Lawrance
Analytical Data (1954), Walter A. Lawrance
Walter Lawrance Papers
No abstract provided.
The Design And Construction Of An Electrolytic Cell For Aluminum Reduction, Thomas H. Melrose
The Design And Construction Of An Electrolytic Cell For Aluminum Reduction, Thomas H. Melrose
Bachelors Theses and Reports, 1928 - 1970
The purpose of this investigation was to design and construct a laboratory size electrolytic cell in which to reduce alumina, using the same basic materials that are used in a commercial size cell. The cell was designed to have a capacity of approximately 100 grams of metallic aluminum produced every 8 hours. The cell was constructed so it could be operated continuously.
Investigation Of Inclusions In Armco Ingot Iron, Edwin J. Duncan
Investigation Of Inclusions In Armco Ingot Iron, Edwin J. Duncan
Bachelors Theses and Reports, 1928 - 1970
Various chemical and electrolytic separation methods were investigated in an attempt to separate the inclusions in Armco ingot iron. Residues obtained were X-rayed for identification purposes. The microstructures of this iron were studied with the object of determining the relative sizes, locations, and possible compositions of the inclusions.