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Articles 29281 - 29310 of 29942
Full-Text Articles in Geology
A Study Of The Lalande, New Mexico, Yonо̄Zu, Japan, And Glorieta Mountain, New Mexico Meteorites, Ralph G. Stevenson Jr.
A Study Of The Lalande, New Mexico, Yonо̄Zu, Japan, And Glorieta Mountain, New Mexico Meteorites, Ralph G. Stevenson Jr.
Earth and Planetary Sciences ETDs
This thesis presents details relating to the discovery of three meteorites, as well as information concerning their acquisition, description, and mineralogy. These three meteorites are the Lalande, New Mexico chondrite (E.C.N. = 1047,343), the Yonо̄zu, Japan chondrite (E.C.N. = 1394,380), and the Glorieta Mountain, New Mexico siderite (E.C.N. = 1058,356).
The Lalande, New Mexico meteorite is composed of olivine and enstatite (var. hypersthene), with small percentages of enstatite-clinoenstatite intergrowths, secondary hematite, and dispersed metallic grains. Alteration to iron oxide has produced a strong stain over most of the component grains. The meteorite is classified as a hypersthene-olivine chondrite (Chy). …
A Study Of The Breece, New Mexico, Hishikari, Japan And Mino, Japan Meteorites, Louis H. Goldsmith
A Study Of The Breece, New Mexico, Hishikari, Japan And Mino, Japan Meteorites, Louis H. Goldsmith
Earth and Planetary Sciences ETDs
In this thesis are given the details concerning the falls of three meteorites, as well as information regarding their acquisition, description and mineralogy. These three meteorites are the Breece, New Mexico siderite (E.C.N. = 1083, 353), the Hishikari, Japan achondrite (E.C.N. = 1305, 317) * and the Mino, Japan achondrite (E.C.N. =1367, 354)*
The Geology And Geomorphology Of The White Rock Canyon Area, New Mexico, Robert J. Emmanuel
The Geology And Geomorphology Of The White Rock Canyon Area, New Mexico, Robert J. Emmanuel
Earth and Planetary Sciences ETDs
The White Rock Canyon area is in the Rio Grande depression in north-central New Mexico between parallels 35 degrees 33' and 35 degrees 53' and meridians 106 degrees 4' and 106 degrees 21' (Figure 1). It occupies part of western Santa Fe County and eastern Sandoval County. The area was named for White Rock Canyon which has been formed by the Rio Grande. This canyon, called Caja del Rio by the Spanish, meaning "box of the river", begins at the town of Buckman and extends southward as a narrow gorge for a distance of 19 miles. The area encloses 316 …
The Geology And Ground-Water Resources Of Bernalillo County, New Mexico, George M. Ugrinic
The Geology And Ground-Water Resources Of Bernalillo County, New Mexico, George M. Ugrinic
Earth and Planetary Sciences ETDs
The purpose of this investigation has been to gather information which might aid in the proper development and utilization of the ground-water resources of Bernalillo County. Ground-water is one of the most valuable resources in the area. Its importance may best be realized by considering the fact that most of the water used in the County comes from wells. Albuquerque has increased its total annual consumption from 385,000,000 gallons in 1920 to an estimated 2,897,000,000 gallons in 1947, owing largely to a large population increase. Per capita annual consumption rose from 25,400 gallons in 1920 to 55,711 gallons in 1947 …
The Alloys Of Gallium And Indium, C. J. Adams
The Alloys Of Gallium And Indium, C. J. Adams
Bachelors Theses and Reports, 1928 - 1970
Thermal analysis VIPS used to construct cooling and heating curves from which the phase diagram was determined. The data for the entire set of cooling curves were obtained by the use of mercury thermometers.
Hot-Dip Aluminizing Of Low-Carbon Steels, Claude R. Barnes Jr.
Hot-Dip Aluminizing Of Low-Carbon Steels, Claude R. Barnes Jr.
Bachelors Theses and Reports, 1928 - 1970
In a relatively short period of sixty-five years, aluminum has grown to the rank of fifth in total weight of metals produced in the world. Throughout its short life, aluminum has been found to have excellent corrosion-resistant properties; yet only in recent years has aluminum been under consideration as a corrosion-resistant coating for iron and steel.
The Electrolytic Polishing Of Steel In Solutions Of Sulphuric And Phosphoric Acids, Joseph W. Tripp
The Electrolytic Polishing Of Steel In Solutions Of Sulphuric And Phosphoric Acids, Joseph W. Tripp
Bachelors Theses and Reports, 1928 - 1970
The process of cleaning and pickling the surfaces of steel objects by electrolytic methods has been known and applied since about 1920; the fact that under certain conditions these surfaces acquired a brilliant luster was noted as early as 1928.
An Isothermal Study Of An S.A.E. 6150 Steel, Tom Liss, C. Arentzen
An Isothermal Study Of An S.A.E. 6150 Steel, Tom Liss, C. Arentzen
Bachelors Theses and Reports, 1928 - 1970
The purpose of this thesis is to set forth the method followed, the laboratory procedure practiced, the results obtained, the conclusions drawn, and the recommendations proposed as a consequence of a metallographic study of the isothermal transformation of an S.A.E. 6150 steel.
Isothermal Transformation Of S.A.E. 6150 Steel By The Magnetic Permability Method, Richard R. Douglas
Isothermal Transformation Of S.A.E. 6150 Steel By The Magnetic Permability Method, Richard R. Douglas
Bachelors Theses and Reports, 1928 - 1970
Since the purpose of this thesis is primarily to present an improved mechanical method for plotting isothermal transformations by means of differential magnetic permeability between untransformed austenite and its ultimate transformation product.
A Preliminary Study Of The Benefication Of Montana Corundum, John L. Brown
A Preliminary Study Of The Benefication Of Montana Corundum, John L. Brown
Bachelors Theses and Reports, 1928 - 1970
The objective of this thesis was to affect an efficient and economical recovery of corundum. The corundum occurs as a crude ore admixed with quartz and other diluents. Yet, this material is a potential Montana resource of a valuable non-metallic mineral. In view of the strategic importance and the relatively small production of this mineral in the United States, it seems advisable at this time in world affairs to investigate every possible source of this mineral.
The Renova "Syenite" Porphyry Madison County, Montana, James H. Clement
The Renova "Syenite" Porphyry Madison County, Montana, James H. Clement
Bachelors Theses and Reports, 1928 - 1970
Unique feldspar porphyries, syenitic in appearance, and granitic in composition, form an unusually thick sill intruding pre-Cambrian Belt graywacke about eight miles south of Whitehall in southwestern Montana. Commercial deposits of gold and silver ores occur nearby, and may possibly be genetically related to the porphyry, although direct association is not evident. The geologic age is believed to be late Cretaceous or early Tertiary, and the sill may be related to the Tobacco Root batholith.
A Study Of Some Pre-Cambrian Schists From Yankee Jim Canyon, Park County, Montana, Charles K. Presley
A Study Of Some Pre-Cambrian Schists From Yankee Jim Canyon, Park County, Montana, Charles K. Presley
Bachelors Theses and Reports, 1928 - 1970
One of the most highly deformed metamorphic rock series in Montana is exposed fifteen miles north of Yellowstone Park, Wyoming in the great gorge known as Yankee Jim Canyon, which was formed by Yellowstone River at that point. These metamorphics are Pre-Cambrian in age, and are almost certainly sedimentary in origin, although the involved and intricate folding which they have undergone has long since obliterated any superficial traces of that origin.
The Lilly Mine Of Powell County, Montana, Wilbur Aikin
The Lilly Mine Of Powell County, Montana, Wilbur Aikin
Bachelors Theses and Reports, 1928 - 1970
For many years the Elliston District, of Powell County has been a minor producer of gold, lead, zinc, and silver. Although never among the largest producing districts of the state, it has with the exception of the war years supplied a notable tonnage of ore to the neighboring mills ever since the first placer and lode claims were located there during the late eighteen hundreds.
Geology Of Smoke Hollow Area 8 Miles Southeast Of Deerlodge, Powell County, Montana, Floyd C. Bossard
Geology Of Smoke Hollow Area 8 Miles Southeast Of Deerlodge, Powell County, Montana, Floyd C. Bossard
Bachelors Theses and Reports, 1928 - 1970
This investigation was undertaken primarily as a problem in geologic mapping. The stratigraphy was studied as to the character, age, and sequence of the geologic formations that are exposed. The conclusions were based principally on the field relationships and lithology because no fossils were found.
Structure Of Southwestern Montana, Donald W. Levandowski
Structure Of Southwestern Montana, Donald W. Levandowski
Bachelors Theses and Reports, 1928 - 1970
Intrusions of granitic rocks on a large scale are commonly found in the central part of folded mountain systems. Igneous rocks, intrusive and extrusive, are widespread in the mountains of southwestern Montana. An examination of the structural pattern of this area indicates that the fold trends form a radial pattern. How and why this pattern formed and its relation to the igneous activity in the area have not yet been discussed in the literature.
Basic Sills In Cottonwoood Creek Canyon, Jefferson County, Montana, Dale F. Kittel
Basic Sills In Cottonwoood Creek Canyon, Jefferson County, Montana, Dale F. Kittel
Bachelors Theses and Reports, 1928 - 1970
A stratigraphic section of about 2600 feet of upper Beltian to lower Devonian formations exposed in Cottonwood Creek Canyon 11 miles east of Whitehall, Montana, contains about 20 igneous sills. These sills are from 5 to 20 feet thick, and grade from granogabbro to quartz basalt, except for one sill which is 165 feet thick, and is composed of granogabbro and red syenite. The whole sedimentary series is isoclinally folded, and the sills follow the bedding planes closely with localized crosscutting through the beds.
Was Assimilation Important In The Formation Of The Boulder Batholith?, Richard Marvin
Was Assimilation Important In The Formation Of The Boulder Batholith?, Richard Marvin
Bachelors Theses and Reports, 1928 - 1970
Examination of a rock suite from the northern end of the Boulder batholith reveals that four of the eight criteria for assimilation as given by Grout are present. Thus, in the opinion of the writer, there is evidence and trends to signify assimilation, but no indication of the importance that it played in the formation of the Boulder batholith.
The Bighorn Mountains, The Little Rocky Mountains And The Bowdoin Dome Uplifts, E. J. O'Connell
The Bighorn Mountains, The Little Rocky Mountains And The Bowdoin Dome Uplifts, E. J. O'Connell
Bachelors Theses and Reports, 1928 - 1970
The purpose of this paper is to secure an actual figure describing the amount of uplift in the Bighorn Mountains, the Little Rocky Mountains and the Bowdoin Dome. To the writer’s knowledge, the amount of uplift in the areas mentioned has not been determined before. Such a figure could be useful in structural studies of Montana and Wyoming, because the amount of uplift is a fair measure of the intensity of orogenic forces; also, the amount of uplift is a prerequisite to the determination of the amount of erosion.
Geology Of The Golden Area, Santa Fe County, New Mexico, W. L. Emerick
Geology Of The Golden Area, Santa Fe County, New Mexico, W. L. Emerick
Earth and Planetary Sciences ETDs
This report represents a detailed study of the geology of a small area in the vicinity of Golden, Santa Fe County, New Mexico. The area is one of low hills, dissected by numerous small arroyos, lying between the Ortiz Mountains on the north and the San Pedro Mountains on the south. To the west the area merges into the Hagan Coal Basin, and to the east the low pass between the mountains descends into the headwaters of Galisteo Creek and into the Estanica Valley.
An Investigation Into The Precipitation Of Copper From Mine Water By Cupric Copper Reduction, And The Subsequent Precipitation Of Copper As Cuprous Chloride, Jack T. Gentry
Bachelors Theses and Reports, 1928 - 1970
The objective of this thesis is to determine the possibility of applying a different method to the recovery of the copper dissolved in the Butte mine waters, and thereby precipitate a purer cement copper with greater efficiency and less iron consumption.
Geology Of The Southern Ladron Mountains, Socorro County, New Mexico, E.A. Noble
Geology Of The Southern Ladron Mountains, Socorro County, New Mexico, E.A. Noble
Earth and Planetary Sciences ETDs
The Ladron Mountains are in a fault-block range consisting in large part of Pre-Cambrian rocks. They are flanked on the west by Paleozoic sediments and elsewhere by Tertiary and Quaternary deposits. The Pre-Cambrian rocks of the southern Ladron Mountains consist of a thick sequence of quartzite and schist which has been granitized by a sub-adjacent intrusion to such a degree that only remnants of unaltered quartzite and schist remain, the remainder of the rocks being largely paragneiss and para-granite. The nature of the intrusion is not known, but it is suggested that it may have been at least partly formed …
Generalized Soil Map Of Nebraska
Generalized Soil Map Of Nebraska
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Pebbles In The Glacial Till Of Eastern North Dakota, Alice E. Russell
Pebbles In The Glacial Till Of Eastern North Dakota, Alice E. Russell
Theses and Dissertations
The paper is a study of twenty-three samples of glacial in eastern North Dakota. The samples were analyzed in terms of lithology, shape, and roundness. Graphs are given showing the relationships among the various factors. The graph are discussed and significance of the various factors affecting the pebbles are evalnated.
An Ecological Study Of The Foraminifera Of Mason Inlet, North Carolina, Daniel N. Miller Jr.
An Ecological Study Of The Foraminifera Of Mason Inlet, North Carolina, Daniel N. Miller Jr.
Masters Theses
"Mason Inlet. North Carolina is a lagoonal marsh area with warm-temperate water, the salinity ranging from fresh to salt water. Nine collecting stations comprise an ecological gradient across the environment.
Forty-two species of foraminifera are recorded from the inlet, ranging in their affinities from brackish water to open-sea facies. Several extensions of range are recorded both northward and southward.
Substratum conditions apparently control the distribution of foraminifera within the inlet. Clean, fine sand provided the largest faunal populations. A depauperate assemblage was found in an inorganic, argillaceous substratum. The largest population of arenaceous forms was found at the channel through …
Geology Of The Crystal Mine, Hardin County, Illinois, John Amsden Emery
Geology Of The Crystal Mine, Hardin County, Illinois, John Amsden Emery
Masters Theses
"The study of the geology and mineralization of the Crystal Mine was undertaken at the suggestion of Mr. Dodson G. Gibson of the Crystal Fluorspar Company, who allowed access to the mine and its records for this purpose. The problem was to develop a system of prospecting the so-called bedded-replacement fluorspar deposits of Hardin County, Illinois. It is believed that an economically feasible method has been developed. This method involves not only the actual finding of fluorspar, but also serves as a guide in revealing structural trends suggestive of mineralization.
The fluorspar deposits of the Crystal Mine are representative of …
Areas In Nebraska Of Subirrigated Vegetation, John Elder
Areas In Nebraska Of Subirrigated Vegetation, John Elder
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
A Subsurface Study Of The Pleistocene Deposits In Kearney County And Adjoining Parts Of Adams, Franklin, And Webster Counties (Includes Text Analyses And Thesis Material), Vincent H. Dreeszen
A Subsurface Study Of The Pleistocene Deposits In Kearney County And Adjoining Parts Of Adams, Franklin, And Webster Counties (Includes Text Analyses And Thesis Material), Vincent H. Dreeszen
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Purification Department Of Zinc Leaching Division At Anaconda, Montana, J. L. Brown
Purification Department Of Zinc Leaching Division At Anaconda, Montana, J. L. Brown
Bachelors Theses and Reports, 1928 - 1970
The original smelter, known as the Upper Works smelter, was located on the north side of the Warm Springs Creek, just 2 miles east of the city of Anaconda and 26 miles from the city of Butte. By the year 1894 this smelter had a capacity of 500 tons of ore a day.
The Vanadium Plant Of The Anaconda Reduction Works, Tom Liss
The Vanadium Plant Of The Anaconda Reduction Works, Tom Liss
Bachelors Theses and Reports, 1928 - 1970
No complete history of mining and smelting will ever be written that does not include a major discussion of the Butte district. The colorful tale of this area plays a major role in the interesting stories of mining. In the fields of mining methods, labor relations end financial manipulations, the Butte area has set a standard.
An Investigation Of The Radioactivity Of Oilwell Drilling Fluid, With Depth, Of Wells In The Berland Field Of Rooks County, Milford W. Johnston
An Investigation Of The Radioactivity Of Oilwell Drilling Fluid, With Depth, Of Wells In The Berland Field Of Rooks County, Milford W. Johnston
Master's Theses or Doctor of Nursing Practice
In reviewing the foregoing literature and in consideration of the very important place of the state of Kansas in the nation's production of petroleum, it was thought that possibly a contribution might be made to the general subject of geophysical prospecting for oil by the adoption and execution of the problem proposed by the title of this thesis. Since a similar but more scattered study of this problem had been previously made by Lippert with the use of an electroscope, it was considered worth-while to repeat the electroscopic observations together with Geiger-Mueller Counter observations on a new series of wells …