Open Access. Powered by Scholars. Published by Universities.®
- Institution
-
- Western Michigan University (19354)
- University of Nebraska - Lincoln (1807)
- Missouri University of Science and Technology (683)
- University of Kentucky (579)
- Utah State University (507)
-
- University of South Florida (494)
- Montana Tech Library (460)
- Portland State University (451)
- University of North Dakota (407)
- Western Kentucky University (365)
- University of New Mexico (325)
- University of Nevada, Las Vegas (264)
- University of Arkansas, Fayetteville (258)
- Smith College (220)
- Central Washington University (217)
- University of Texas at El Paso (189)
- Brigham Young University (183)
- Old Dominion University (170)
- Michigan Technological University (157)
- University of Dar es Salaam (139)
- Louisiana State University (131)
- University of Alabama at Birmingham (124)
- University at Albany, State University of New York (112)
- Stephen F. Austin State University (111)
- West Virginia University (109)
- Illinois State University (107)
- City University of New York (CUNY) (103)
- Fort Hays State University (84)
- University of South Carolina (76)
- Wayne State University (73)
- Keyword
-
- Geology (731)
- Nebraska (496)
- Montana (275)
- Groundwater (269)
- Geochemistry (198)
-
- Kentucky (196)
- Karst (166)
- Stratigraphy (151)
- Rock (127)
- Tectonics (123)
- Butte (120)
- Utah (120)
- 3d model (116)
- Water (116)
- Geomorphology (115)
- Geophysics (113)
- Physical Sciences (111)
- Hydrogeology (106)
- Limestone (91)
- Hydrology (90)
- Copper (87)
- Petrology (82)
- Seismology (79)
- Shale (76)
- Test (75)
- Logs (73)
- Earth sciences (72)
- Hole (72)
- Map (71)
- Sedimentology (69)
- Publication Year
- Publication
-
- Legacy Scout Tickets from Pure Oil Company (11044)
- Thin Sections (6677)
- Legacy Color Lithology Strip Logs (1152)
- Conservation and Survey Division: Faculty and Staff Publications (897)
- Theses and Dissertations (630)
-
- United States Geological Survey: Staff Publications (507)
- Masters Theses (475)
- Bachelors Theses and Reports, 1928 - 1970 (423)
- Earth and Planetary Sciences ETDs (318)
- All Graduate Theses and Dissertations, Spring 1920 to Summer 2023 (276)
- Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works (266)
- Map and Chart--KGS (234)
- Dissertations and Theses (233)
- Geosciences: Faculty Publications (216)
- International Journal of Speleology (213)
- Geology Faculty Publications and Presentations (197)
- USF Tampa Graduate Theses and Dissertations (183)
- UNLV Theses, Dissertations, Professional Papers, and Capstones (178)
- Open Access Theses & Dissertations (175)
- Geolographs (174)
- Graduate Theses and Dissertations (146)
- Tanzania Journal of Science (139)
- Geosciences Faculty Publications (138)
- Mammoth Cave Research Symposia (133)
- Electronic Theses and Dissertations (132)
- All 3D Rock Models (116)
- Bulletin of the University of Nebraska State Museum (1924–2023) (112)
- Geology Theses and Dissertations (111)
- Robert F. Diffendal, Jr., Publications (103)
- OES Theses and Dissertations (101)
- Publication Type
- File Type
Articles 28741 - 28770 of 30010
Full-Text Articles in Earth Sciences
Environmental Analysis Of The Swan Peak Formation In The Bear River Range, North-Central Utah And Southeastern Idaho, Philip L. Vandorston
Environmental Analysis Of The Swan Peak Formation In The Bear River Range, North-Central Utah And Southeastern Idaho, Philip L. Vandorston
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The Swan Peak Formation in the Bear River Range of northern Utah and southeastern Idaho varies in thickness from 0 feet to over 400 feet. It consists of three units: (1) a lower unit of interbedded quartzites, shales, and limestones; (2) A middle unit of interbedded quartzites and shales; (3) An upper unit of nearly homogeneous quartzites. The different sedimentary structures, ichnofossils, body fossils, and mineral compositions of each unit represent different environments of deposition. The lower unit probably was deposited in a shallow-shelf environment, and its sediments grade upward into probably shoreface-, tidal-flat-, and lagoonal deposits of the middle …
Soils Of Nebraska, John A. Elder
Soils Of Nebraska, John A. Elder
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Structural Geology Of Southeastern Margin Of Bear River Range, Idaho, Clinton L. Davis
Structural Geology Of Southeastern Margin Of Bear River Range, Idaho, Clinton L. Davis
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Seven Cambrian formations and two Ordovician formations, with a total thickness of 9,000 feet, crop out west of the Paris thrust fault and comprise the upper plate. Slices of three Ordovician formations, one Silurian formation, two Mississippian formations, and one formation each of Pennsylvanian and Permian age comprise the low plate. Mesozoic units are not present in the mapped area. Two Tertiary formations and unconsolidated Quaternary deposits are also present.
The major structural feature is the Paris thrust fault which extends north-south throughout the area. It was active during the Laramide orogeny. This fault involved eastward movement and placed Cambrian …
Paleoecology Of The Lowermost Part Of The Jurassic Carmel Formation, San Rafael Swell, Emery County, Utah, R. Joseph Dover
Paleoecology Of The Lowermost Part Of The Jurassic Carmel Formation, San Rafael Swell, Emery County, Utah, R. Joseph Dover
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Paleoecology of the lowermost Carmel Formation, San Rafael Swell, Emery County, Utah, was studied at nine localmes 2 to 21 miles apart. Eight of the sections contain fossiliferous calcilutites and oölmc limestones in the basal 35 to 135 feet measured. Thickness of the fossiliferous beds ranges up to 10 feet. Beds of barren calcilutites, calcarenites, oölmc limestones, intraclastic limestones, calcareous sandstones, and bedded gypsum, separate the fossiliferous beds. A parallel-bedded, basal quartz sandstone, 0.5 to 7 feet thick, everywhere overlies the Navajo Formation.
Molluscs dominate faunal assemblages. Shells are recrystallised to calcite, but external sculpture is preserved in sufficient detail …
The Hyrum And Beirdneau Formations Of North-Central Utah And Southeastern Idaho, James F. Eliason
The Hyrum And Beirdneau Formations Of North-Central Utah And Southeastern Idaho, James F. Eliason
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The Hyrum and Beirdneau Formations of North-central Utah and Southeastern Idaho represent rocks of late Middle Devonian (Givetian) to upper Upper Devonian (Famennian) age. They are disconformably underlain by the Early Devonian Water Canyon Formation in most cases and disconformably overlain by the Devonian-Mississippian Leatham Formation or the Mississippian Lodgepole Formation.
The Hyrum Formation is divided into five members based on lithology and color changes. The five members are: (1) Samaria, (2) Lower Dolomite, (3) Lower Carbonate-detritus, (4) Upper Dolomite, and (5) Upper Carbonate-detritus Members. The Samaria Member is the only fossiliferous unit within the Hyrum Formation.
The Beirdneau Formation …
Igneous Geology Of The Rio Puerco Necks, Sandoval And Valencia Counties, New Mexico., William Travis Brown Jr.
Igneous Geology Of The Rio Puerco Necks, Sandoval And Valencia Counties, New Mexico., William Travis Brown Jr.
Earth and Planetary Sciences ETDs
In the Rio Puerco valley of Valencia and Sandoval Counties, New Mexico, immediately east of Mount Taylor and its associated lava flows are a series of ten prominent and exposed basaltic rocks. These bodies consist of alkali basalts exhibiting no systematic mineralogic or compositional trends throughout the area. The alkali basalts are composed of olivine, augite, plagioclase (labradorite), and opaques in a trachytic to felty groundmass. Each neck was emplaced by means of a convection cell mechanism that allowed the surrounding Cretaceous sediments to remain undisturbed by the intrusion. Contained in the alkali basalts are ubiquitous ultramafic inclusions of lherzolite …
The Tiger's Back "A Report On Australian Organizations For Metropolitan Planning Administration", Robert D. Kuzelka
The Tiger's Back "A Report On Australian Organizations For Metropolitan Planning Administration", Robert D. Kuzelka
Conservation and Survey Division: Faculty and Staff Publications
The Australian town planning scene presents many interesting and unusual aspects to the city planner from the United States of America. Aspects which because of familiarity and proximity may not strike the Australian town planner as being either interesting, or unusual. This report will discuss some of these aspects as they seem to be affecting each major metropolitan region which includes the capital city in each of the six Australian States. Throughout the report, "metropolitan region" refers to the unit, or units of Local Government which are included in the planning area of each organization which is considered in this …
Origin Of The Mount Merino Chert And Shale, Middle Ordovician, Eastern New York State, Dorothy M. Lang
Origin Of The Mount Merino Chert And Shale, Middle Ordovician, Eastern New York State, Dorothy M. Lang
Geology Theses and Dissertations
Mount Merino Chert and Shale, Middle Ordovician, is one of the most siliceous units of the Taconic sequence (eastern New York and western Vermont); it is composed of interbedded shale, siliceous hale, argillite and chert. Non-clastic quartz — aggregates of quartz having a.mosaic or felted texture — predominates in all beds, except `shale. All siliceous beds are finely laminated; most laminae are distinguished from adjacent laminae by the texture of the quartz groundmass, and the amount of clastics, carbonates, chlorite and sulphides. Statistical comparison of the textures of the quartz aggregates which occur with the other mineral components suggests that …
Jefferson County, Fairbury Area, Conservation And Survey Division
Jefferson County, Fairbury Area, Conservation And Survey Division
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Stratigraphy And Correlation Of Precambrian Volcanic Rocks, Eminence, Missouri, Henry Hugh Fisher
Stratigraphy And Correlation Of Precambrian Volcanic Rocks, Eminence, Missouri, Henry Hugh Fisher
Masters Theses
"A portion of the Precambrian rocks located in the vicinity of Eminence, Missouri are studied and describes. These rocks are exposed as rhyolitic knobs protruding through hills of Ordovician sediments. The Precambrian rocks under study consist principally of rhyolite, with smaller amounts of tuff and creccis. The rhyolite is a potash rhyolite porphyry, both flow banded and unbanded, with phenocrysts of kaolinized orthoclase in a matrix of quartz and orthoclase. The tuffs contain devitrified glass shards and occasional ash balls such as those exhibited at Cott Mountain. A stratigraphic sequence was determined with the oldest rocks to the south at …
Trace Element Anomalies In The Igneous Wall Rocks Of Hydrothermal Veins In The Searchlight District, Nevada, Zuhair Al-Shaieb
Trace Element Anomalies In The Igneous Wall Rocks Of Hydrothermal Veins In The Searchlight District, Nevada, Zuhair Al-Shaieb
Masters Theses
"Two hundred and fifty vein and wall rock samples were collected from Chief of the Hill and the Duplex Mines of Searchlight District, Nevada. The samples were collected along lines approximately normal to the veins. They were analyzed for lead, copper, zinc, silver, gold, arsenic, selenium, and molybdenum using neutron actication analysis and atomic absorption spectrophotometry. Gold, silver, copper, lead and zinc show well-developed anomalies in the wall rocks. In most cases, the concentration of these elements decreases gradually with increasing distance from the vein and reaches background values at a distance of 40-120 feet from the vein. Molybdenum and …
A Fluorescent Tracer Study At A Tidal Inlet (Rudee Inlet, Virginia), James W. Bunch
A Fluorescent Tracer Study At A Tidal Inlet (Rudee Inlet, Virginia), James W. Bunch
OES Theses and Dissertations
Patterns and approximate rates of littoral transport south of Rudee Inlet. Virginia were investigated with fluorescent tracers. Sand movement was traced under a variety of longshore current and wave conditions. Patterns of tracer dispersal reflected the importance of wave height, breaker angle, and longshore current velocity on modes of littoral transport. A direct relationship between angle of breaker incidence. generated longshore current. and direction of tracer sand movement was found. Onshore offshore paths were taken by tracer material during periods of weak longshore currents and small breaker angles while alongshore paths were followed by tracer material during strong longshore currents …
Ground Water Atlas Of Nebraska (June 1969), V. H. Dreeszen, J. A. Elder, E. C. Weakly, E. C. Reed, G. R. Svoboda
Ground Water Atlas Of Nebraska (June 1969), V. H. Dreeszen, J. A. Elder, E. C. Weakly, E. C. Reed, G. R. Svoboda
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Fort Union (Paleocene) Mollusks From Southern Golden Valley And Southeastern Billings Counties, North Dakota, John J. Delimata
Fort Union (Paleocene) Mollusks From Southern Golden Valley And Southeastern Billings Counties, North Dakota, John J. Delimata
Theses and Dissertations
Nine molluscan species are known to occur in Tongue River Sentinel Butte sediments of parts of Billings, Golden Valley, and Slope Counties in southwestern North Dakota. Tongue River sediments contain all nine of the species which include: two unionids, Plesielliptio priscus (Meek and Hayden) and Rhabdotophorus senec tus (White); one corbulid, Bicorbula mactriformis (Meek and Hayden); and six viviparids, Viviparus retusus (Meek and Hayden), Viviparus trochiformis (Meek and Hayden), Campeloma nebrascensis (Meek and Hayden), Lioplacodes limnaefonnis (Meek and Hayden), Lioplacodes nebrascensis (Meek and Hayden), and Lioplacodes tenuicarinata (Meek and Hayden). Only five of these species (P. priscus, Q. nebrascensis, V. …
A New Rhinoceros From The Nebraska Miocene, Lloyd G. Tanner
A New Rhinoceros From The Nebraska Miocene, Lloyd G. Tanner
Bulletin of the University of Nebraska State Museum (1924–2023)
A new species of rhinoceros, Menoceras marslandensis, is here proposed. It is based upon a nearly complete skull from the upper part of the Marsland Formation, Hemingford Group (Miocene), of Box Butte County, Nebraska. The new species was probably derived from Menoceras arikarense (Barbour), collected from the Agate Springs Quarries (Arikaree Group, Harrison Formation) of Sioux County, Nebraska, with which both Diceratherium niobrarensis Peterson and D. cooki Peterson are likely synonymous. From Menoceras arikarense, the presumed ancestral stock, Menoceras marslandensis differs in possessing the following characters: (1) very long, fused but slightly cleft, nasals, with flattened, rugose areas …
Lancaster County, Nebraska Soils -- Geology Field Trip, Conservation Survey Division
Lancaster County, Nebraska Soils -- Geology Field Trip, Conservation Survey Division
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Nebraska Groundwater Level (Decline & Rise), 1969
Nebraska Groundwater Level (Decline & Rise), 1969
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Nebraska's Water Supply Map Including Groundwater In Storage, Total Water Withdrawals, Precipitation, And Outflow As Of 1969
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
New Members Of The Gering Formation (Miocene) In Western Nebraska, Including A Geological Map Of Wildcat Ridge And Related Outliers, Carl F. Vondra, C. Bertrand Schultz, Thompson M. Stout
New Members Of The Gering Formation (Miocene) In Western Nebraska, Including A Geological Map Of Wildcat Ridge And Related Outliers, Carl F. Vondra, C. Bertrand Schultz, Thompson M. Stout
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Otoe County, Unadilla. Lincoln: University Of Nebraska, R. K. Pabian
Otoe County, Unadilla. Lincoln: University Of Nebraska, R. K. Pabian
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Nebraska Soil Association Map, 1969, Conservation And Survey Division
Nebraska Soil Association Map, 1969, Conservation And Survey Division
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Late Middle Ordovician Graptolites From The Subsurface Of Eastern Nebraska, M. P. Carlson, W. B.N. Berry
Late Middle Ordovician Graptolites From The Subsurface Of Eastern Nebraska, M. P. Carlson, W. B.N. Berry
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Total Number Of Irrigation Wells Located In Nebraska Counties As Of 1969
Total Number Of Irrigation Wells Located In Nebraska Counties As Of 1969
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Groundwater Levels In Nebraska, 1969, C. F. Keech
Groundwater Levels In Nebraska, 1969, C. F. Keech
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Vertical And Lateral Variations In A Welded Tuff, Ted Richard Dinkel
Vertical And Lateral Variations In A Welded Tuff, Ted Richard Dinkel
Masters Theses
"During the Tertiary period, nuée ardente type eruptions spread large deposits of welded tuffs over southwestern Utah and southeastern Nevada. The Wah Wah Springs Tuff is a member of one of the most extensive of these units, the Needles Range Formation of Oligocene age. Its known outcrop area is estimated at 13,000 square miles. Relief was slight in the area during the time of eruption to enable the flows to spread over so large an area. In an effort to analyze the lateral and vertical continuity of the member, a petrographic study was undertaken. The average composition of the Wah …
Stratigraphy And Economic Geology Of Uranium-Bearing Sediments In The Poison Spider District, Natrona County, Wyoming, Carlos Enrique Reijenstein D'Acierno
Stratigraphy And Economic Geology Of Uranium-Bearing Sediments In The Poison Spider District, Natrona County, Wyoming, Carlos Enrique Reijenstein D'Acierno
Masters Theses
"Geologic, stratigraphic, and mineralogic characteristics of the Eocene Wind River and Oligocene White River Formations were determined for the southern portion of the Poison Spider District, Natrona County, Wyoming. Sieve analysis and heavy mineral techniques were used to recognize stratigraphic units, determine their environment of deposition, obtain a better knowledge of the grain size distribution, and to identify a possible source area for the sediments. Particular emphasis was concentrated on the evaluation and interpretation of the available geophysical data (gamma ray and resistivity logs), and geological information which had led to the establishment of several relationships between the local geology …
A Geochemical Study Of The Maquoketa Formation In Pike County, Missouri, John Siegfried Trapp
A Geochemical Study Of The Maquoketa Formation In Pike County, Missouri, John Siegfried Trapp
Masters Theses
"Statistical interpretation of geochemical data was used to determine the environment of deposition of the Maquoketa Formation in Pike County, Missouri. A cyclic sequence was noted which can be best explained by cyclic climatic changes. During the study it was found that elemental relationships which would be expected in a freshly deposited sediment can be found in core samples. In samples from outcrops and quarry faces these relationships have been destroyed. As these elemental relationships reflect mineralogical relationships, serious doubts have arisen as to the validity of petrographic studies of samples taken from outcrops. This study indicates weathering may be …
The Background Concentrations Of Copper, Lead, And Zinc In Streams Of The "New Lead Belt", Missouri, Nicholas Howard Tibbs
The Background Concentrations Of Copper, Lead, And Zinc In Streams Of The "New Lead Belt", Missouri, Nicholas Howard Tibbs
Masters Theses
"This study was initiated to determine the background concentrations of copper, lead, and zinc in the streams of the Viburnum Trend or New Lead Belt of southeast Missouri. Analytical methods were developed for atomic adsorption spectroscopy. These methods initially consisted of coextraction of cooper, lead, and zinc using the APDC/MIBK system, and finally of extraction of copper by APDC/MIBK and direct analysis of lead and zinc using the newly developed "Sampling Boat" technique. The data obtained from these analyses were arranged in histograms and critically analyzed. The background concentrations were established to be 4-6 ppb for all three elements. Methods …
The Upper Red River Formation (Ordovician) In Western North Dakota, Harlan K. Friestad
The Upper Red River Formation (Ordovician) In Western North Dakota, Harlan K. Friestad
Theses and Dissertations
The upper Red River Formation in Western North Dakota consists of cyclic sedimentary rocks having four main porosity zones which contain most of the oil and gas found in the formation. It was divided into three distinct units that were traced throughout western North Dakota on mechanical logs. In ascending order these are the P, R, and F intervals which consist of alternating sequences of dolomites, limestones, and anhydrites. Facies changes, occur within the P interval both on a regional and a local scale, typically from dense limestones to porous dolomites.
The Kesson anticline and the basin hinge JJ.ne 1-1ere …
A Study Of Earth Science Teachers And Practices In North Dakota For The Academic Year 1968-1969, Howard C. Reith
A Study Of Earth Science Teachers And Practices In North Dakota For The Academic Year 1968-1969, Howard C. Reith
Theses and Dissertations
In the period between 1961-1964 the North Dakota department of Public Instruction initiated long overdue changes in the science curriculum for the seventh, eighth, and ninth grades of the public schools. Titese involved changes from general science to the life, earth, and physical sciences. During this same period there was a re vitalization of interest in earth science at the national level, with the public school enrollment rising from several thousand to well over one million.
Because of the rapid national growth in earth science enrollment, and the status of earth science in North Dakota, a study to determine the …