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Articles 57031 - 57060 of 59540
Full-Text Articles in Entire DC Network
A Preliminary Investigation Of The Land Use Limitations Of The Major Landforms Along A Portion Of The Lincoln County Coast, Oregon, Richard Kent Mathiot
A Preliminary Investigation Of The Land Use Limitations Of The Major Landforms Along A Portion Of The Lincoln County Coast, Oregon, Richard Kent Mathiot
Dissertations and Theses
This study of a portion of Oregon's Lincoln County coast describes the physical limitations to land use of the various landforms in the study area. Seven major landform types comprise the study area: beaches, active dunes, stabilized dunes, marsh land and tidal flats, marine terraces, basaltic headlands, and uplands. Descriptions and evaluations of their physical characteristics, distribution, geologic and and engineering characteristics, and potentially hazardous processes are contained in the maps, figures, and text.
Environmental Geology Of The Marquam Hill Area, Roger Alan Redfern
Environmental Geology Of The Marquam Hill Area, Roger Alan Redfern
Dissertations and Theses
This work on Marquam Hill area in Portland, a relatively undeveloped urban hillside area, is a pilot study in which environmental factors are evaluated quantitatively in order to delineate limitations on development. The study was undertaken at the request of and in cooperation with the City of Portland Planning Commission and with the State of Oregon Department of Geology and Mineral Industries. Factors considered include various aspects of the land, vegetation and attitudes of inhabitants. Findings are not intended to satisfy need for individual site studies by qualified experts but should show where that expertise is needed.
Field data were …
Selenium In Nebraska's Groundwater And Streams, R.A. Engberg
Selenium In Nebraska's Groundwater And Streams, R.A. Engberg
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Structure And Stratigraphy Of The Central Cimarron Range, Colfax County, New Mexico., Craig S. Goodknight
Structure And Stratigraphy Of The Central Cimarron Range, Colfax County, New Mexico., Craig S. Goodknight
Earth and Planetary Sciences ETDs
The Cimarron Range forms a southeastern extension of the southern Sangre de Cristo Mountains. The area mapped in this study lies mainly between Eagle Nest and Ute Park, New Mexico, and is centered around Cimarron Canyon.
Rocks ranging from Precambrian to Quaternary in age are exposed• - in the central Cimarron Range. Precambrian rocks in the core of the range consist mainly of moderately foliated, low- to medium-grade metamorphics intruded by faintly foliated bodies of meta-granodiorite and meta-diabase.
Approximately 4000 feet of sedimentary rocks ranging from the Sangre de Cristo Formation of Pennsylvanian-Permian age through the Poison Canyon Formation of …
Petrogenetic And Trend Surface Analysis Of Hell Canyon Pluton, Montana, William M. Johanns
Petrogenetic And Trend Surface Analysis Of Hell Canyon Pluton, Montana, William M. Johanns
Masters Theses
I. Introduction
The purpose of this study is to ascertain the petrogensis of the Hell Canyon pluton through the use of standard petrographic techniques and three dimensional mineralogical variability trends. It is intended that this study will provide additional information to the ongoing investigations of the Boulder batholith sequence, of which this intrusion is a part.
The Boulder batholith is located in the Southeastern part of the Northern Rocky Mountains physiographic province in southwestern Montana. This province is typified by numerous rugged mountain ranges of which there are two distinct types. The Idahotype( Rocky Mountain Association of Geologists, 1972) mountains, …
Biostratigraphy Of The Type Yamhill Formation, Polk County, Oregon, Larry R. Gaston
Biostratigraphy Of The Type Yamhill Formation, Polk County, Oregon, Larry R. Gaston
Dissertations and Theses
One hundred and seventy-four species and varieties of fossil Foraminifera are recorded from thirty-eight localities in the Siletz River Volcanics, Yamhill and Nestucca Formations exposed along Mill and Gooseneck Creeks, in the Northern Coast Range of Oregon. Marginulina holmesi is described as new. The Foraminifera indicate that this sequence was deposited during late Ulatisian and Narizian time, in marine waters at bathyal or lower neritic depths, with cool surface temperatures. The Yamhill Formation can be correlated with Moody Shale member of the Toledo Formation and the Coaledo Formation of Oregon; the McIntosh and Aldwell Formations of Washington; and the upper …
Preliminary Reconnaissance Water Quality Survey Of The Buffalo National River, R. E. Babcock, H. C. Macdonald, E. E. Dale Jr., R. L. Meyer, Joe Nix, D. G. Parker, Eugene Schmitz
Preliminary Reconnaissance Water Quality Survey Of The Buffalo National River, R. E. Babcock, H. C. Macdonald, E. E. Dale Jr., R. L. Meyer, Joe Nix, D. G. Parker, Eugene Schmitz
Arkansas Water Resources Center Technical Reports
In accordance with Contract No. CX 700030105, dated 12 February 1973, the University of Arkansas , Water Resources Resear ch Center is submitting a "Preliminary Reconnaissance Water Quality Survey of the Buffalo National River." The Water Resources Research Center of Arkansas has supplied the necessary personnel and facil ities to perform a preliminary reconnaissance survey of the Buffalo National River of Arkansas with special emphasis placed on the establishment of both permanent and temporary benchmarks for water quality sampling. Preliminary water quality samples have been collected to make those chemical, physical, and biological analyses as defined by Mr . Roland …
Press Reports, Walter A. Lawrance
Upper Androscoggin River, Walter A. Lawrance
Upper Androscoggin River, Walter A. Lawrance
Walter Lawrance Papers
No abstract provided.
Computer Sheets, Walter A. Lawrance
Lower Androscoggin River, Walter A. Lawrance
Lower Androscoggin River, Walter A. Lawrance
Walter Lawrance Papers
No abstract provided.
Evolution Of Platt Shoals Northern North Carolina Shelf: Inferences From Areal Geology, Philip C. Sears
Evolution Of Platt Shoals Northern North Carolina Shelf: Inferences From Areal Geology, Philip C. Sears
OES Theses and Dissertations
The evolution of Platt Shoals, a complex ridge and trough system on the south side of the Albemarle Shelf Valley, was determined and the modern hydraulic regime was inferred. The methods used were surficial grain size, 11 vibracores, seismic profiling and bathymetric maps. Platt Shoals developed in a three step process. The first, step was the formation of a substrate of late Pleistocene regressive deposits from 15,000 to 30,000 yr B. P. The second step, occurring approximately 11,000 yr B. P., was the formation of estuary mouth shoals of the ancestral Albemarle River. Between 4,4.00 to 5,000 yr B. P., …
Fisheries Report No 13 - Results Of A Biological Survey Of The Shire Of Kent, Western Australia, N. L. Mckenzie
Fisheries Report No 13 - Results Of A Biological Survey Of The Shire Of Kent, Western Australia, N. L. Mckenzie
Fisheries Research Reports
The Department of Fisheries and Fauna is responsible for the conservation of the native fauna in Western Australia. The main approach to this problem has been the creation of reserves for "The Conservation of Flora and Fauna". These reserves, known as "Wildlife Sanctuaries", are controlled by the Western Australian Wild Life Authority - a Statutory Authority serviced by the Department.
The object of the acquisition programme is to develop a reserve system which will include, as far as possible, a full and permanent cross-section of the State's native floral and faunal assemblages and, at the same time, provide for the …
Uniformitarian Principle, Richard G. Hodgson
Spectral Irradiance In Nebraska Reservoirs And A New Instrument For Its Measurement, Gary D. Uphoff
Spectral Irradiance In Nebraska Reservoirs And A New Instrument For Its Measurement, Gary D. Uphoff
School of Natural Resources: Dissertations, Theses, and Student Research
No abstract provided.
A Study Of Shore Erosion At Seventeen Sites Along Eastern Lake Michigan, Walter George Fingleton
A Study Of Shore Erosion At Seventeen Sites Along Eastern Lake Michigan, Walter George Fingleton
Masters Theses
No abstract provided.
Geology Of Atwater Well Field Kalamazoo County, Michigan, John E. Malanchak
Geology Of Atwater Well Field Kalamazoo County, Michigan, John E. Malanchak
Masters Theses
No abstract provided.
Inventory Of Lake Studies In Maine, Charles F. Wallace Jr., James M. Strunk
Inventory Of Lake Studies In Maine, Charles F. Wallace Jr., James M. Strunk
Maine Collection
Inventory of Lake Studies in Maine
By Charles F. Wallace, Jr. and James M. Strunk
State Planning Office, Water Resources Planning Division, July 1973.
"Printed under Appropriation Number 4248.5 and financially assisted by planning grants from the United States Water Resources Council Title III funds."
Contents: Introduction / Investigating Agencies / Federal Agencies / State Agencies / Regional Planning Commissions and Economic Development Districts / Maine Colleges and Universities / Private / Other Private / Other / Appendices
Structure And Stratigraphy Of The San Ysidro Quadrangle, Sandoval County, New Mexico, Richard Luverne Ruetschilling
Structure And Stratigraphy Of The San Ysidro Quadrangle, Sandoval County, New Mexico, Richard Luverne Ruetschilling
Earth and Planetary Sciences ETDs
The mapped area is in Sandoval County, New Mexico, and includes the San Ysidro 7-minute quadrangle. Precambrian rocks in the area consist mainly of quartz monzonite gneiss. Quartz diorite xenoliths and leucocratic dike rocks are less abundant.
Strata totaling 1300 meters, ranging from Morrow-age strata of Pennsylvanian age through the Zia Sand Formation of Miocene age, are exposed in area (fig. 3). Overlying the marine Pennsylvanian Morrow-age strata and Madera Formation is 900 meters of continental, marginal marine, and evaporite deposits consisting, in ascending order, of the Permian Abo Yeso, Glorieta, San Andres and Bernal Formations, the Chinle Formation of …
Particle Size Distribution And Small-Scale Bed-Forms On Sand Waves, Chesapeake Bay Entrance, Virginia, John T. Wells
Particle Size Distribution And Small-Scale Bed-Forms On Sand Waves, Chesapeake Bay Entrance, Virginia, John T. Wells
OES Theses and Dissertations
The relationship between sediment texture and topography has been studied along five series of sand waves in Chesapeake Bay entrance, Virginia. Results indicate that two types of sand waves with reference to mean grain size are present: sand waves with coarse sediment on crests and fine in troughs, and sand waves with fine sediment on crests and coarse in troughs. Asymmetrical, migrating sand waves exhibit the first type; near-symmetrical, non-migrating sand waves exhibit the second type. In general, bimodal sediment is present on crests of migrating sand waves and in troughs of stationary sand waves. There is a progressive decrease …
The Bedrock Geology Of The Southwest Part Of The Kachess Lake Quadrangle, Washington, David Carl Lofgren
The Bedrock Geology Of The Southwest Part Of The Kachess Lake Quadrangle, Washington, David Carl Lofgren
Dissertations and Theses
The southwestern part of the Kachess Lake quadrangle lies between Lakes Cle Elum and Kachess, on the east flank of the central Cascade Range of Washington. The region lies between the North and South Cascade petrologic provinces, and includes rocks typical of each. Pre-Tertiary Easton Schist (called the Shuksan Suite farther north), and the Late Cretaceous-Paleocene Swauk Formation occur widely in the North Cascades, while the Tertiary Silver Pass Volcanics and Teanaway Basalt are typical of South Cascade volcanic sequences. Diabasic dikes of the Teanaway dike swarm occur throughout the vicinity.
The area is bounded on the west by a …
Granulometric Analysis Of Recent Sediments Of Tillamook Bay, Oregon, Gennaro William Avolio
Granulometric Analysis Of Recent Sediments Of Tillamook Bay, Oregon, Gennaro William Avolio
Dissertations and Theses
The author has sampled the recent bottom sediments in Tillamook Bay, Oregon. Sediment distribution is assessed in relation to sediment source areas and related to sedimentary environments. Particular attention was directed to the precision with which granulometric data can be stated. It was found that variance is quite high for granulometric parameters of the bay sediments.
Sediment distribution using different measures are displayed on charts of the bay. Size distributions of sediments at any given location are examined for geologic significance. Plotting of size distribution on graph paper using probability ordinate is shown to increase the ease of geologic interpretation. …
A Tectonic Study Of A Part Of The Northern Eagle Cap Wilderness Area, Northeastern Oregon, Kenneth Gordon Neal
A Tectonic Study Of A Part Of The Northern Eagle Cap Wilderness Area, Northeastern Oregon, Kenneth Gordon Neal
Dissertations and Theses
Upper Triassic metavolcanic and metasedimentary strata in the study area are intruded by the Hurricane Divide and Craig Mountain Plutons of the Late Jurassic-Cretaceous Wallowa Batholith. The Clover Creek Greenstone is overlain by the Martin Bridge Limestone, which is in tum overlain by the Hurwal Argillite; although the sequence is in normal stratigraphic order, contacts are generally tectonic. Concurrent with Early-Middle Jurassic regional deformation, during intermediate to mafic dikes, emplacement of the plutons of the Wallowa Batholith began. The plutons intruded vertically through the greenstone and limestone and then horizontally above the greenstone. This resulted in intense penetrative plastic deformation …
A Test Of The Non-Uniform Distribution Of Azimuths Of Overlapping Lunar Craters, John Richard Dickson
A Test Of The Non-Uniform Distribution Of Azimuths Of Overlapping Lunar Craters, John Richard Dickson
Earth and Planetary Sciences ETDs
The azimuths between the centers of overlapping lunar craters show a statistically strong preferred orientation over most of the lunar globe for those crater pairs where the younger crater is of relatively small diameter (10-25 km). A strong north-south preferred lineation also exists in a narrow belt along the east and northern limb of the full moon for those crater pairs involving relatively large diameter craters (45 km). Various endogenic and exogenic mechanisms which might create a preferred orientation of overlapping craters are considered in the light of these findings. The preferred orientation of the smaller craters could result from …
The Chemistry Of Groundwaters In The Jemez Area And A Magnetic Survey Of A Potential Source Of Magmatic Fluids, David Woltz
The Chemistry Of Groundwaters In The Jemez Area And A Magnetic Survey Of A Potential Source Of Magmatic Fluids, David Woltz
Earth and Planetary Sciences ETDs
The Jemez Mountain area of north-central New Mexico has a geologic history of intense volcanism. Active geologically related phenomena are still present in the form of hot springs and fumaroles. This thesis undertook a study of the concentration of the elements Calcium, Chlorine, Fluorine, Magnesium and Sodium, and the compound Silicon Dioxide in the groundwaters of the Jemez Mountains. The concentrations in some of the waters indicate that they may possess magmatic components. A ground magnetic survey was undertaken to investigate the possibility of intrusions in the area. Data gathered in the survey has been interpreted as an intrusion at …
Petrology And Geochemistry Of Varved Halite Ii Member, Permian Castile Formation, Delaware Basin, Texas And New Mexico, Saleh Mohammad Billo
Petrology And Geochemistry Of Varved Halite Ii Member, Permian Castile Formation, Delaware Basin, Texas And New Mexico, Saleh Mohammad Billo
Earth and Planetary Sciences ETDs
The Halite II Member of the Permian Castile Formation in the Delaware Basin of Texas and New Mexico constitutes a 1778-year record of evaporite laminations. They are composed of rhythmic halite-anhydrite layers interrupted by four distinct carbonate-laminated beds of anhydrite. The average thickness of the varves is 2.3 cm for the halite-anhydrite couplets and 3.9 mm for the carbonate-laminated anhydrite couplets. They are correlative over distances of 70 miles (113 km). Halite occurs either as hopper crystals, grains, or as compact masses with many inclusions, bubbles, and vacuoles. Matrix crystals, rectangular crystals, nodules, and laths are the main petrographic types …
Predicting Nitrogen Transformations And Ammonia Volatilization In Warm Desert Soils, G. R. Dutt
Predicting Nitrogen Transformations And Ammonia Volatilization In Warm Desert Soils, G. R. Dutt
Memorandum
No abstract provided.
Nitrogen And Carbon Flux In A Soil-Vegetation Complex In The Desert Biome, D. B. Porcella, J. E. Fletcher, D. L. Sorensen, G. C. Pidge, A. Dogan
Nitrogen And Carbon Flux In A Soil-Vegetation Complex In The Desert Biome, D. B. Porcella, J. E. Fletcher, D. L. Sorensen, G. C. Pidge, A. Dogan
Memorandum
No abstract provided.
Soil As A Factor In Modelling The Phosphorus Cycle In The Desert Ecosystem, J. J. Jurinak, R. A. Griffin
Soil As A Factor In Modelling The Phosphorus Cycle In The Desert Ecosystem, J. J. Jurinak, R. A. Griffin
Memorandum
No abstract provided.
Gaseous Losses Of Nitrogen From The Soil Of Semi-Arid Regions, T. C. Tucker, R. L. Westerman
Gaseous Losses Of Nitrogen From The Soil Of Semi-Arid Regions, T. C. Tucker, R. L. Westerman
Memorandum
No abstract provided.