Digital Commons Network^™

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 …

Analysis Of Unmodified Stone Materials From The Cambria Site, Charles R. Watrall

Journal of the Minnesota Academy of Science

Analysis of the stone materials from the Cambria Site reinforces cultural implications about the site made on formal artifact analysis alone. Secondly, the paper illustrates a simple means of analysis to gain vital information on archaeological site culture history.

West Midlands Development : Selection Of Areas For Development, J A. Swarts

Journal of the Department of Agriculture, Western Australia, Series 4

BEFORE commencing any clearing or fencing on a new property it is most important to carefully select those areas which are to be developed first.

West Midlands Development : The Interpretation Of Lands Department Soil Maps Of The West Midlands Area, T C. Stoneman

Journal of the Department of Agriculture, Western Australia, Series 4

Before most Crown land in the West Midlands area was released, Lands Department survey parties examined and mapped the soils using a soil classification system based on technical advice from the Department of Agriculture.

Copper, Zinc And Molybdenum Fertilizers For New Land Crops And Pastures : 1969, J W. Gartrell, R. N. Glencross

Journal of the Department of Agriculture, Western Australia, Series 4

Four years of intensive research into soil deficiencies in developing areas have resulted in a more comprehensive understanding of the need for trace elements in Western Australia.

Nebraska Groundwater Level (Decline & Rise), 1968

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Description Of Nebraska's Common Rocks, Raymond Burchett

Conservation and Survey Division: Faculty and Staff Publications

This one page information sheet lists names of common rocks found in Nebraska. It also includes a brief description and locations where these common rocks may be found.

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 …

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 …

Directory Of Nebraska Quarries, Pits And Mines (1968), R. R. Burchett

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Acres Irrigated In Nebraska- Past And Present

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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 …

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 …

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 …

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, …

The Effects Of Groundwater Seepage On Stream Regimen : A Laboratory Study, Samuel S. Harrison

Theses and Dissertations

The effects of' groundwater seepage on the competence, bed rough ness, and water surface slope of small streams were studied in two laboratory fumes. The larger fume is 20 feet long, 3t feet wide, and 18 inches deep; the smaller flume is 12 feet long, 6 inches wide, and 10 inches deep. Both flumes are equipped so that groundwater seepage through the stream bed can be controlled and monitored.

In the absence of bedforms, upward (positive) seepage has little effect on stream competence or transport rate, even when quicksand conditions are reached. The decrease in effective grain density brought about …

The Geology Of The Newburg-South Westhope Oil Fields, Bottineau County, North Dakota, Hussein Marafi

Theses and Dissertations

The Newburg and South Westhope oil fields of the northeastern part of the Williston Basin are essentially one continuous secondary stratigraphic oil trap as determined by well log studies. The reservoir rocks in the two fields are carbonates present near the top of the Mississippian Ratcliffe interval and sandstone present in the basal unit of the Triassic Spearfish Formation. The two "pays” are separated by the post-Mississippian erosional unconformity which truncated the Ratcliffe beds.

The two fields are marked with depressions formed as a result of the dissolving of deep seated, presumably Devonian, salt beds and complementary gradual subsidence of …

The Postglacial Sedimentology Of Devils Lake, North Dakota, Edward Callender

Theses and Dissertations

The present sedimentary environment of Devils Lake, a Closed brackish lake in northeastern North Dakota, was investigated, and changes in the Holocene lacustrine environment are interpreted. Sediment samples from Main Bay of Devils Lake were analyzed for their physical, chemical and mineral ogical properties. Analytical data on surface sedimer.t were used to delineate the present sedimentary environment, while data on sediment from three cores were used to reconstruct the Holocene lacustrine history.

The dominant physical processes affecting the surface sediment are wave action and intermittent sediment influx through Big Coulee. The dominant chemical process, precipitation of calcium carbonate, is a …

Geologic And Limnologic History Of Glovers Pond, Northwestern New Jersey, J. Mark Erickson

Theses and Dissertations

Glovers Pond is a temperate, dimictic lake, 1.25 miles southwest of the town of Johnsonburg, Blairstown 7.5' Quadrangle, northwestern New Jersey. The Paleozoic Kittatinny, Jacksonburg, and Martinsburg Formations, in fault contact with each other, crop out in the vicinity of the lake. The lake has a maximum depth of 9.5 meters and occupies a glacially modified and dammed fault valley currently being infilled concentrically by .four types of sediment. Basim1ard these are: (1) peat, (2) marl, (3) "transitional", calcareous, organic-rich silt, and (4) gyttja. Glovers Pond is thermally and chemically stratified. The hypolimnion is undersaturated with CaCO3; tl1is prohibits deposition …

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.

Structure And Stratigraphy Of The Northern Part Of The South Virgin Mountains, Clark County, Nevada, J. R. Morgan

Earth and Planetary Sciences ETDs

The northern part of the South Virgin Mountains is within the transition zone between the Basin and Range Province and the High Plateaus of the Colorado Plateau. Sedimentary formations in the Paleozoic are represented by more than 6,800 feet of carbonate and elastic sediments. Ordovician rocks are thought to be present, but are not confirmed. Rocks of Silurian age are absent from the area. Triassic and Jurassic units, the Moenkopi Formation, Chinle Formation and the Aztec Sandstone, have a composite thickness of more than 3,700 feet. There are elastic and minor carbonate rocks, all of continental origin, that are of …

Criteria For The Determination Of Flow Direction In Volcanic Rocks, Eugene Irwin Smith

Earth and Planetary Sciences ETDs

A statistical method employing the Tukey Chi-square test and the vector method was used for determining the direction of primary flow lineation in volcanic rocks. Oriented samples were collected from the McCartys Basalt, the porphyritic andesite of Mount Taylor and the Bandelier and Battleship Rock Rhyolite Tuffs of the Jemez Mountains. All these localities are in New Mexico. Measurements were taken of the elongate particles in each horizontal thin section. The flow lineation direction in each slide was determined statistically by computing values of vector mean or chi-square orientation. The McCartys flow samples showed the lowest reliability. This was probably …

The Nitrate Hazard In Well Water: With Special Reference To Holt County, Nebraska., Richard A. Engberg

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

A Petrochemical Study Of Compositionally Zoned Ash-Flow Tuffs, David L. Giles

Earth and Planetary Sciences ETDs

Vertical compositional zoning occurs within the basal simple cooling units of two welded ash-flow tuff sheets, the Kneeling Nun and Caballo Blanco formations, in the Cobre Mountains of southwestern New Mexico. The sheets are on the southern edge of the Datil-Mogollon volcanic province. The Kneeling Nun (33.4 m.y.) varies abruptly but systematically upward from a modal quartz latite to latite, and the Caballo Blanco (29.8 m.y.) from a modal rhyolite to capping quartz latite. Both are crystal-rich, and in each the amount of ferromagnesian and plagioclase phenocrysts and phenocryst percent increases upward, while the quartz and alkali feldspar/plagioclase ratio decreases. …

Geology Of The Cerro Pelon-Arroyo De La Jara Area, Santa Fe County, New Mexico, Alvis Lee Lisenbee

Earth and Planetary Sciences ETDs

The Cerro Pelon-Arroyo de la Jara area is a north-northwesterly plunging syncline at the southern end of the Española basin. Exposed rock units consist of more than 5,000 feet of Mesozoic and Cenozoic shale and sandstone intruded by Oligocene diorite sills and andesite and latite dikes related to the Ortiz intrusive center to the west.

The syncline is affected by several fault systems with both normal and strike-slip movement represented. Northerly trending faults of the east limb combine with a monoclinal flexure to produce an over-all lowering of the section to the west. These faults appear to be related to …

A Stratigraphic Study Of The Navajo Sandstone, Navajo Mountain, Utah And Arizona, William O. Hatchell

Earth and Planetary Sciences ETDs

The Navajo Sandstone of the Triassic(?) and Jurassic age is approximately 1, 000 feet thick at Navajo Mountain, Utah, and is composed of sets of cliff-forming, highly cross-stratified sandstone and horizontally stratified limestone, siltstone, and sandstone. it is intertongued on a large scale with the underlying, fluvial Kayenta Formation of Triassic(?) age, and is comfortably overlain by the marine Carmel Formation of the Jurassic age.

In the highly cross-stratified Navajo, tabular-planner and wedge planner sets are more common than simple wedge sets, and persistent horizontal bedding and truncation planes distinguish individual sets. Ripple marks, a distinctive type of "graded bedding", …

Stratigraphic Cross Section Of Paleozoic Rocks Of Nebraska, Russell Smith, Raymond Burchett

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Water Levels In Observation Wells In Nebraska, 1966, C.F. Keech

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.