Geology Commons^™

St. Louis Limestone, Stratigraphy And Petrography, Near Its Type Locality, Abd El-Aziz El-Hady A. Borahay

Masters Theses

"The St. Louis Limestone of the Upper Meramecian Series, Mississippian System, is typically lithographic, light-to light-olive gray in color, dense, and fractures conchoidally. It is brecciated, especially in the lower part, and contains some chert nodules. Oolites are present close to the top of the formation. The Salem-St. Louis contact is placed at the base of the lowest breccia zone and the top of Salem is characterized by crystalline quartz and abundance of chert nodules. The appearance of typical Ste. Genevieve oolites with sand-size quartz grains indicates the St. Louis-Ste. Genevieve contact. The St. Louis Limestone is characterized by dominance …

Textural Properties, Provenance, And Environments Of Formation Of The "Rimrock" Sandstone Of The Filled Sinkholes Northeast Of Rolla, Missouri, Upendra Jayantilal Parikh

Masters Theses

"Filled sinkholes have long been known to occur in the carbonate rocks of Missouri. A sandstone unit occurs in these sinkholes at their outer margin, forming a rim, and is called here the rimrock sandstone. Samples of rimrock sandstone, from an area northeast of Rolla, Missouri were studied. Grain size, heavy mineral and. thin section analyses of these samples were carried out. Size analysis data suggest that, texturally, the rimrock sandstone is similar to the St. Peter sandstone and that this formation could have supplied sands for the formation of rimrock. Field evidences suggest that continental conditions prevailed at the …

Upper Cretaceous And Lower Cenozoic Foraminifera Of Three Oil Wells In Northwestern Iraq, Farouk Sunallah Al-Omari

Doctoral Dissertations

"Seventy-five samples of well cuttings and cores from the Iraq Petroleum Company Butmah Well No. 9, Ain Zalah Well No. 16 and Ain Zalah Well No. 17, in northwestern Iraq at approximately 36° 37' north latitude and 42° 41' east longitude, have been examined in detail. The lithologic descriptive term "marl" is replaced by calcareous shale or argillaceous limestone, and the term "globigerinal limestone" is not considered applicable. The foraminiferal fauna from the upper part of the Shiranish Formation prove to be of Maestrichtian age. The Mesozoic-Cenozoic boundary is recognized on the basis of "smaller foraminiferal" faunal assemblages; it is …

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 …

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 …

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 …

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 …

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 …

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 Atlantic Continental Margin, Bruce C. Heezen

UMR Journal -- V. H. McNutt Colloquium Series

Turbidity currents, surface, and subsurface currents carry detritus from the land across the continental shelf to the adjacent continental slope where slumps and turbidity currents transport the sediment downslope for hundreds of miles to greater depths, and deep geostrophic contour currents transport it thousands of miles down-current in a direction parallel to the bathymetric contours. The combined effect of these processes has been to create a wide, thick, geosynclinal apron of sediment at the base of the continental slope.

Subsidence of the continental shelf has continued since mid-Mesozoic, carrying down Lower Cretaceous reefal limestones to depths of 5,000 meters off …

Major Structures Of The Rocky Mountains Of Colorado And Utah, A. J. Eardley

UMR Journal -- V. H. McNutt Colloquium Series

This paper describes the major structures of Colorado and Utah and presents a theory of origin based on new knowledge of the layering and constitution of the upper mantle and lower crust. It proposes that the Ancestral Rockies and the more modem ones of Cretaceous and early Tertiary age of both the shelf of Colorado and eastern Utah and the miogeosyncline of western Utah are the result of vertical uplifts of the silicic crust. The uplifts are caused by the rise, from the upper mantle, of basalt in scattered places to the base of the silicic crust. This rise domed …

Tectonic Framework Of The Great Basin, Ralph J. Roberts

UMR Journal -- V. H. McNutt Colloquium Series

The Great Basin is bordered on the west by the Sierra Nevada and on the east by the Colorado Plateau and Rocky Mountains. These tectonically different provinces are genetically related; basin and range structure evolved as part of the tectonic development of western North America.

The Precambrian framework here is not well known, but northeasterly geosynclinal trends, east- west orogenic trends, and northwesterly fracture zones can be projected from the craton or inferred.

Sedimentation in the Cordilleran orthogeosyncline from Cambrian to Devonian time was characterized by an eastern miogeosynclinal (carbonate) and a western eugeosynclinal (siliceous and volcanic) assemblage. In latest …

Geologic Structure And History Of The Sierra Nevada, Paul C. Bateman

UMR Journal -- V. H. McNutt Colloquium Series

The Sierra Nevada is a huge block of the earth’s crust that has broken free on the east and has been tilted westward. It is composed chiefly of Mesozoic granitic rocks and Paleozoic and Mesozoic metamorphosed sedimentary and volcanic rocks. The granitic rocks constitute the Sierra Nevada batholith, which is part of a more or less continuous belt of plutonic rocks that extends northward from Baja California through the Sierra Nevada at a small angle to the axis of the range and into western Nevada. The batholith is localized in the axial region of a complexly faulted synclinorium. It is …

Profile Of The Folded Appalachians Of West Virginia, Byron N. Cooper

UMR Journal -- V. H. McNutt Colloquium Series

The Appalachian folded belt of southwestern Virginia exemplifies most of the structural and stratigraphic features that are considered typical of the Appalachians as a whole. The folded belt which is only 36 miles wide along the valley course of New River is generally well-defined on the southeast by the western foothills of the Blue Ridge and on the northwest side by a sharp structural front beyond which the beds are relatively gently folded.

Despite the fact that Paleozoic shelf successions of the Central Interior region are known to have controlled the thickness and facies of sedimentary formations within them and …

Preface, Paul Dean Proctor

UMR Journal -- V. H. McNutt Colloquium Series

The distinguished authors of these tectonic studies, which span the United States from the Atlantic continental shelf margin to the Pacific coast, need no introduction to the geologic profession. Each was selected as a participant in the V. H. McNutt-Geology Department Colloquium because of his intimate knowledge and thorough research on the tectonic development of the area on which he reports. The authors publicly presented their papers during the Spring of 1966 on the campus of the University of Missouri at Rolla (formerly University of Missouri School of Mines and Metallurgy). The colloquium volume is unique in that such a …

Tectonic History Of Midcontinental United States, Frank G. Snyder

UMR Journal -- V. H. McNutt Colloquium Series

Metasediments of Middle Precambrian, and possibly some of earlier age, form an arcuate trending belt across Missouri, Kansas, and Nebraska. These were intruded by granites of several ages that appear to be part of a continuous wave of Late Precambrfan igneous activity. Late Precambrian events that can be delineated include, besides the igneous activity and formation of iron deposits, development of a Keweenawan basin that extended from Lake Superior into eastern Kansas; igneous activity and metamorphism of Grenville age in the eastern Midcontinent; development of a major fault lineament extending northeastward from northeast Arkansas into the Canadian shield outcrop area …

Umr Journal: A Coast To Coast Tectonic Study Of The United States, University Of Missouri--Rolla

UMR Journal -- V. H. McNutt Colloquium Series

The UMR Journal publishes scholarly papers of scientific research and humanistic studies. These publications are distributed from Rolla, Missouri, as exchanges to scientific and humanistic institutions and libraries throughout the world.

The California Coast Ranges, John C. Crowell

UMR Journal -- V. H. McNutt Colloquium Series

Western California between the 37th and 40th parallels is part of an active mobile orogenic belt in which sedimentation, deformation, volcanism, and plutonism have been intimately associated since the mid-Mesozoic. At present, the region is still undergoing folding and warping as shown by data from geodetic triangulation networks and geomorphology, and several major high-angle fault zones are seismically active. These faults continue to acquire displacement both suddenly during earthquakes and slowly by gentle creep with no recordable shocks. Pleistocene beds and terraces at places are steeply warped. Strong deformation occurred during the late Pliocene and early Pleistocene. Most of the …

Sulfide Mineralogy And Fabrics Of The Iron Ores At Benson Mines, New York, Pedro Hugo TumialáN De La Cruz

Masters Theses

"The occurrence of sulfide minerals and their textural relationships to the silicate and oxide minerals in the Benson Mines, New York, iron deposit were investigated by ore microscopic and petrographic means. The Benson deposit is one in which the dominant iron oxides, magnetite and hematite, occur in a quartz-feldspar gneiss which was subjected to hornblende granulite subfacies metamorphism. Two hundred ore and country rock specimens were systematically collected from all parts of the open pit mine. Polished sections and thin sections were prepared from nearly all of the collected specimens. The oxide ore exhibits a granular texture in which isolated …

The Downhole Suspension And Testing Of An Electrodynamic Shear Wave Exciter, Robert Franklin Kehrman

Masters Theses

"The work in this research project was aimed at designing a Downhole Electromagnetic Shear Wave Generator capable of delivering a wide frequency band, random, continuous signal. This Exciter was built using a compressed-air driven piston assembly for downhole application. The device was tested in the laboratory in a concrete test facility. It proved to be capable of transmitting a continuous, measurable stress into the concrete in a 100 to 5,000 hertz frequency band"--Abstract, page ii.

Lateral Variations Of Carbonate Rock Adjacent To Ore Deposits In The Upper Mississippi Valley Zinc-Lead District, Wisconsin, Illinois, Iowa, Mehdi H. Mirbaba

Masters Theses

"The lateral variation and nature of carbonate host rock in the Upper Mississippi Valley zinc-lead district were petrographically studied within the McGregor and Quimbys Mill Members of the Platteville Formation of the Middle Ordovician System. These members are dolomitic limestone in the Upper Mississippi Valley district of southwestern Wisconsin, northwestern Illinois and northeastern Iowa. One hundred and twenty-seven specimens were collected or were available from pull drifts in the Shullsburg mine. The specimens were collected at regular intervals of 50 or lOO feet in seven pull drifts between eight ore bodies. Thin sections prepared from the carbonate specimens were studied, …

Design And Testing Of A Downhole Continuous Wave Generator, Cole L. Smith

Masters Theses

"The continuous shear wave generator was designed to be the first instrument capable of producing a continuous high frequency signal below the weathered layer of the earth. This is to be accomplished by placing the instrument in a bore hole and lowering it below the weathered layer where the higher frequencies are severely attenuated. The generator produced a measurable signal output with the output force being approximately 11 pounds force. Testing of the generator showed the necessity of using a spring system with a low natural frequency. The testing also indicated several improvements which should be made in the generator …

Magnetic After-Effects In Dilute Transition Metal Alloys, Robert Henry Graham

Masters Theses

"Temperature dependent after-effects of the initial permeability in ternary dilute ferromagnetic iron-base alloys were studied in the temperature range of -50°C to +30°C. Interstitial carbon and nitrogen were the diffusing elements. Nominal percentages of the substitutional transition elements manganese, chromium, vanadium and titanium were added to determine the extent of substitutional-interstitial pair interactions. No additional temperature dependent after-effect of the initial permeability was noticed in Fe- substitutional -C alloys, while such after-effects were present in Fe- substitutional -N alloys. Magnetic after-effect data were analyzed on the basis of single Debye relaxations. Relaxation times for carbon and nitrogen diffusion in alpha-iron …

Mineralization Of The Boss Bixby Anomaly, Iron And Dent Counties, Missouri, Frederick Joseph Smith

Masters Theses

"The Boss-Bixby deposit is located on the line dividing Iron and Dent Counties and belongs to the Southeast Missouri Precambrian Iron Metallogenic Province. The sequence of events leading to the formation of the deposit is reviewed. The mineralization occurred after intrusion of intermediate magma, but prior to the intrusion of granite. The ore minerals present are the following in the order of deposition: magnetite, ilmenite, giekielite, hematite, rutile, pyrite, molybdenite, cobaltite, chalcopyrite, bornite, sphalerite, galena, limonite, chalcocite, and cuprite. Four different methods of zoning are presented. Partial pressures of oxygen and sulphur [sic], as well as temperature controlled sequential deposition …

The Geology Of The Thayer Area Emphasizing The Stratigraphy Of The Cotter And The Jefferson City Formations, William Jesse Hedden

Masters Theses

"Detailed geologic mapping of the Cotter-Jefferson City formational contact in the Thayer, Missouri area demonstrates the feasibility of using this contact. This mapping also delineates significant faulting in the area.

The stratigraphy of the Cotter and Jefferson City formations in the Thayer area has been studied to find a mappable contact between the two formations. The contact was mapped in this area by using marker beds, the stratigraphic positions of which were determined by applying insoluble residue techniques to outcrop sections. Because the insoluble residue zones of the Cotter and Jefferson City formations are recognizable throughout the state of Missouri …

A Subsurface Geologic Study Of Petroleum Possibilities In The Pennsylvanian Rocks Of Concho County, Texas, Gregory Paul Kraus

Masters Theses

"During early Pennsylvanian time the area now occupied by Concho County was a portion of the Texas peninsula, a broad, low arch with a karst topography developing on its exposed Ellenburger surface. A mid-Pennsylvanian marine transgression inundated the arch and it became an area of clear, shallow water deposition favorable to limestone development. Local sedimentation during Strawn time was largely controlled by its position relative to the Llano uplift and surrounding basins. A variety of subsurface maps were constructed for this study essentially utilizing electric log data. The results indicate that limestones of the Strawn platform facies rapidly change in …

Mineralogy And Paragenesis Of The Cave-In-Rock Fluorspar District, Hardin County, Illinois, Daesuk Han

Masters Theses

"The paragenesis of minerals occurring in the bedding-replacement fluorspar ores in the Crystal, Minerva No. 1 and Hill mines in the Cave-in-Rock district, Hardin County, Illinois, has been studied by underground, binocular, petrographic and ore microscopic examination. More than 300 hand specimens were collected from the mines, 100 thin sections were prepared and 36 polished surfaces were examined to prepare paragenetic diagrams for the Crystal and Minerva No. 1 mines.

The minerals determined in the fluorspar ores were: fluorite, sphalerite, galena, chalcopyrite, pyrite, marcasite, calcite, strontianite, witherite, barite, quartz, dolomite, oil and bitumen. Most of these minerals are present both …

Analysis Of Trace Elements In River And Spring Waters, Faridoon Andeshire Namdarian

Masters Theses

"Methods for the analysis of trace elements in natural fresh waters were investigated.

Preconcentration of the water samples by reducing the volume and by using cation adsorption resins was studied. It was concluded that cation absorption was the more promising procedure.

The methods used for analysis were absorption spectrophotometry, neutron activation analysis, and atomic absorption spectrophotometry. Atomic absorption spectrophotometry was considered the most suitable method for the analysis of trace elements in waters.

Calcium, copper, lead, zinc, and cadmium were determined in a number of Missouri springs and stream water samples"--Abstract, page ii.

A Study Of The Genesis Of The Pyritic Gneiss In The Grenville Series, St. Lawrence And Jefferson Counties, New York, Dennis O'Leary

Masters Theses

"The pyrite-pyrrhotite belt is a northeast-southwest trending area about 35 miles long and three to four miles wide located in Jefferson and western St. Lawrence counties, New York, within the metamorphosed Grenville Lowland just northwest of the Adirondack massif.

Outcropping within this belt are a number of thin discontinuous quartz-biotite-oligoclase gneisses with an unusually high graphite, chlorite, and pyrite content, known as "rusty gneisses." Sulfides are concentrated in these gneisses into zones of up to 50% or more pyrite. The pyrite is granular or crystalline and is invariably accompanied by large amounts of chlorite and graphite and local minor segregations …

A Petrofabric Study Of The Iron Ore Of Benson Mines, Star Lake, New York, Remo Antonio Masiello

Masters Theses

"The petrofabrics of the host gneiss silicates and Ovate ore grains were studied in thin sections of oriented specimens collected from widely scattered positions in the iron ore deposit at Benson Mines, New York.

Ten oriented specimens selected for petrofabrics study were comprised primarily of feldspar, quartz, garnet and ores, with lesser quantities of biotite and sillimanite. Petrofabric diagrams were prepared for the orientation fabrics of magnetite and biotite in eight of the ten specimens, but sillimanite and quartz were sufficiently abundant for fabric determination in only three specimens. Duplicate thin section and perpendicular sections were utilized to check the …