Geology Commons^™

Geology Of The Northern Part Of The Sierra Cuchillo, Socorro And Sierra Counties, New Mexico, Florian Maldonado

Earth and Planetary Sciences ETDs

The northern Sierra Cuchillo, Socorro and Sierra Counties, New Mexico is approximately 32 miles northwest of Truth or Consequences, New Mexico. The Sierra Cuchillo is a narrow fault-block range in the Basin-Range province and is a structurally high element west of the Rio Grande trough. It is bordered on the west by the Winston graben and the Black Range and on the east by Monticello graben and the San Mateo Mountains.

Permian rocks consist of the Yeso and San Andres Formation, with an aggregate thickness of 2100 ft (640 m). Upper Cretaceous rocks, 40 ft (10 m) thick, consist of …

Geology Of The Sweetwater Canyon Area And Origin Of Interbasinal Canyons, Southwestern Montana, James Carl Peterson

Masters Theses

No abstract provided.

Analysis Of Unsteady Flow Toward Artesian Wells By Three-Dimensional Finite Elements, Yang H. Huang, Shen-Jyh Wu

KWRRI Research Reports

A three-dimensional finite element computer program was developed for analyzing unsteady flow toward artesian wells. The program is designed especially for determining the drawdown around an artesian well penetrating fully or partially a nonhomogeneous and anisotropic aquifer of irregular shape and cross section. It can also be used as a general program for aquifer simulation and evaluation. A major advantage of the program lies in the minimum amount of input data required. By assuming the top and bottom boundaries of the aquifer as two arbitrary planes, the aquifer will be divided into six- or eight-node elements, and their nodal coordinates …

The Sediments And Sedimentary Environments Of A Barrier Island, Cedar Island, Virginia, John Walter Heinsius

Masters Theses

No abstract provided.

Growth Line Analysis Of A Recent Scallop Population And It's [Sic] Potential For Paleoecology, John F. Dillon

Earth and Planetary Sciences ETDs

Periodic growth lines can be used to construct a record of variations in the growth rate of a fossil or recent shell. Because growth rate is largely dependent upon environmental conditions, such a record serves also as an indication of variations in the environment during the lifetime of the shell. Although the very presence of such variations is of some paleoecologic interest, the main potential of growth lines in paleoecology lies in an extension of this argument. This is the concept that the contemporaneity of fossil organisms could be tested by examining their growth rate records for similarities; these would …

A Petrologic And Quantitative Compositional Study Of Four Rocks From The Mid-Atlantic Ridge, Jonathan A. Green

Earth and Planetary Sciences ETDs

The composition of major mineral phases in four rocks from the equatorial Mid-Atlantic Ridge, as determined by electron microprobe analysis and supplemented by additional mineralogic and petrographic study, have provided data for comparison with continental mafic assemblages. The compositional range of coexisting minerals in the samples: a nepheline-normative gabbro (teschenite), an olivine tholeiite, and two uralitized norites, is similar to the ranges of comparable continental suites. The teschenite contains pyroxene (Wo_48-46 En_37-23Fs_15-31) with high amounts of CaO (20.3-22.2 wt %), Al₂O₃ (2.9-6.8 wt. %), and Ti02 (1.2-2.9 wt. %) characteristic of continental …

Geology Of The White Oaks Mining District Lincoln County, New Mexico, James R. Grainger

Earth and Planetary Sciences ETDs

The White Oaks mining district is 12 km northeast of Carrizozo, in Lincoln County, New Mexico. Hydrothermal gold and tungsten mineralization occurs in north-trending veins and breccia zones in portions of the central district. Permian sandstones, limestones, and gypsum of the San Andres Formation are upwarped marginal to and by the Lone Mountain intrusive in the northwest portion of the map area. Triassic Santa Rosa and Chinle sandstones and shales are inclined to the south with Cretaceous Dakota, Mancos, and Mesaverde sediments. Approximately 640 m of sedimentary strata is exposed in the district.

Igneous rocks in the map area range …

Groundwater Geology Of Southwest Nebraska Ground Water Conservation District, Guy J. Leonard, Peter W. Huntoon

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Groundwater Levels In Nebraska, 1973, M.J. Ellis

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Environmental Analysis Of The Upper Cambrian Nounan Formation, Bear River Range And Wellsville Mountain, North-Central Utah, Larry L. Gardiner

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Nounan Formation in north-central Utah thickens northward from 696 feet near Causey Dam to 1147 feet at High Creek in the Bear River Range, and northwestward to 1149 feet at Dry Canyon in Wellsville Mountain. The basal contact of the Nounan Formation is sharp, but dolomite extends irregularly downward into limestones of the Bloomington Formation as much as 6 feet.

The Nounan Formation is divided into three members based on lithologic characters: (1) a lower member composed of dark, medium-crystalline dolomite; (2) a middle member composed of white, coarse-crystalline dolomite with tongues of dark dolomite; and (3) an upper …

Phosphate Exploration And Property Evaluation In Southeastern Idaho, Illustrated By The Dry Valley Area, James Simon Spalding

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The western phosphate field produced about 15 percent, in 1970, of the nation's domestically consumed phosphate rock and contains an estimated 58 percent of the nation's indicated phosphate reserves. The central portion of the western phosphate field, which contains the Dry Valley area of southeastern Idaho, encompasses the greatest amount of mineable phosphate reserves in the smallest geographic area within the western field.

Exploration of properties in the area should follow an orderly sequence of literature search, area reconnaissance, detailed target appraisal, and detailed three-dimensional sampling to effectively evaluate each property. Present exploration techniques include topographic analysis, vegetative investigation, profile …

A Mineralogical And Geochemical Study Of The Ferruginous Bauxite Deposits In Columbia County, Oregon, And Wahkiakum County, Washington, Ronald Laverne Jackson

Dissertations and Theses

Wet chemical analysis and instrumental neutron activation analysis (INAA) were performed on a suite of samples from three residual ferruginous bauxite profiles in the study area for abundances of Al₂O₃,

SiO₂, Fe₂O₃, Ti O₂, Na, Sc, Hf, Cr, Co, La, Sm, Yb, Lu, and Th. In addition a mineralogical study accompanied this research, using petrographic, differential thermal, and x-ray diffraction techniques. In each profile, the relative mobility of these elements were calculated by empirical methods for comparison with the parent rock and mineral properties in the saprolite.

This …

An Investigation Of Littoral Transport Between Virginia Beach And Sandbridge, Virginia, Richard C. Cunningham Jr.

OES Theses and Dissertations

A method for calculating littoral transport, direct determination of the sediment flux, has been proposed and evaluated. Three sampling stations, located between Virginia Beach and Sandbridge, Virginia, were occupied for a period of thirteen months (September, 1972 to September, 1973). Measurements include velocity of the littoral current, cross-sectional area of the surf zone, and in situ samples of suspended and bottom sediment load. Observations of sea and atmospheric conditions were obtained. Two ways of calculating littoral transport were derived from the same basic method, thus two sets of transport values were generated. Two annual littoral transport values were calculated by …

Lakeside Homes Around Tuttle Creek Reservoir: An Element In The Local Settlement Fabric, Gary Lee Henton

Student Work

'l'he construction of several large reservoirs in the Midwest has brought about the growth of innumerable ancillary developments. The increased number of new homes, located adjacent to the reservoirs represents a growing component of our settlement fabric. Geographers have done studies on recreational developments, (Wolfe, Roy L., "Summer Cottages in Ontario"1 Howes, Robert· M., "Recreational Opportunities Arising from Reservoir Construction,"2) but little published investigation has been done in the Kansas, or Nebraska area. How important are the lakeshore homes now, and what part will they play in future housing? Who are the people currently occupying these structures? Where do they …

The Foraminiferids Of The Cannonball Formation (Paleocene, Danian) And Their Paleoenvironmental Significance : Grant, Morton And Oliver Counties, North Dakota, William E. Fenner

Theses and Dissertations

Two hundred-forty samples (of which fifty-five contained micro fossils) were collected from six measured sections in the Cannonball Formation (Paleocene, Danian) in Grant, Morton and Oliver Counties, North Dakota. Twenty-six species of benthonic foraminiferids were identified from these samples: 6 textulariines, 2 miliolines and 18 rotaliines. No planktonic foraminiferids were found. The fauna is characterized by a predominance of individuals of textulariines, especially the lituolids. Although the Cannonball Formation is characterized by an alternating sequence of sandstones and mudstones> the foraminiferid fauna was restricted to the mudstone facies in the upper and upper-middle part of the formation. Two characteristic assemblages …

The Physical And Petrographic Characteristics Of Formcoke Produced Experimentally From Lignite And Subbituminous Coal, Bruce L. Ramsey

Theses and Dissertations

Formcoke was produced experimentally from a North Dakota lignite and a Wyoming subbituminous coal. The effect of initial charring temperature (600°C or 900°C), of char grain size (less than 18 mesh, less than 35 mesh, or less than 60 mesh), of briquetting pressure (1000, 2000, 3000, 4000, 5000, 6000, 7000, 8000, 9000 or 10,000 psi) of binder percentage (5, 10, 15, 20 or 25 per cent), and of final carbonization heating rate (18°C/:min, 12°C/min or 6°C/min) on formcoke briquet com pressive strength was studied.

A final carbonization heating rate of 6°C/min produced uniform shape briquets. Rates of 12°C/min and 18°C/min …

Petrography, Metamorphism, And Geochemistry Of The Bermeja Complex And Related Rocks In Southwestern Puerto Rico And Their Significance In The Evolution Of The Eastern Greater Antillian Island Arc, Victor J.B. Lee

Geology Theses and Dissertations

Chapter I. Introduction and previous work 1
Chapter II. Geological setting and the petrography of the igneous and metamorphic rocks from southwestern Puerto Rico 6
Chapter III. Metamorphism in southwestern Puerto Rico and relations to the Eastern Greater Antilles 46
Chapter IV. Geochemistry of the Bermeja complex 84
Chapter V. Secular compositional changes of the volcanic rocks in Puerto Rico and other islands in eastern West Indies and the significances of the Bermeja complex 179
Appendix A-E: Petrographic data of the analyzed samples of the Bermeja complex 222
References cited 231

Heavy And Alkali Metal Content Of Surface And Ground Waters In The Joplin Area, Missouri., Edwin Joseph Garrison

Masters Theses

"Over 50 water samples were collected in the fall and spring from springs, streams, lakes and selected water wells within a radius of six miles from the population center of Joplin, Missouri, which lies within the formerly active Tri-State mining district. The samples were analyzed for Ca, Mg, Na, K, Cu, Pb, Zn, Cd, Fe and Hg. Water well samples represent deep (Cambrian-Ordovician) and shallow (Mississippian) rock sources. Statistical evaluations of the data were conducted to help delineate the patterns and causes of metal variations.

The Ca, Mg, Na, K, Zn and Fe concentrations, listed in descending order of abundance, …

Barometric And Pump Test Determination Of The Characteristics Of A Carbonate Aquifer In The Vicinity Of Norman Creek, Phelps County, Missouri., Somchai Wongsawat

Masters Theses

"Carbonate rock aquifers underlie many parts of Missouri. As population and water use increase, these aquifers will increase in importance as sources of water supply. The purpose of this study is to investigate the applicability of barometric calculations and a variety of pump test evaluation equations to a shallow confined doloii mite aquifer. The aquifer is the upper Gasconade Formation of Lower Ordovician age in the vicinity of Norman Creek, south central Phelps County, Missouri.

The response of water level to atmospheric pressure showed that the carbonate aquifer in this study site has a rather high barometric efficiency (B_{av …}

A Study Of The Subsurface Stratigraphy Of The Upper Cambrian In Western Missouri, Joseph L. Thacker Jr.

Masters Theses

"Megascopic examination of diamond-drill cores supplemented by insoluble residue data provides a usable means of studying the lithologic characteristic of Upper Cambrian strata in the subsurface of western Missouri.

The stratigraphic relationships within each Cambrian formation and the relationships of each Cambrian unit to formations above and below are discussed.

The relationship of Upper Cambrian strata to the Precambrian surface in western Missouri and easternmost Kansas is illustrated. The Lamotte Sandstone is overlapped by the Reagan Sandstone against Precambrian topographic highs and the Bonneterre and lower Davis are replaced by sandstones similar to the Reagan in southwest Missouri and southeast …

Minnesotans In Nature: Trends And Prospects, John R. Borchert

Journal of the Minnesota Academy of Science

No abstract provided.

Geology Tour Of Lancaster County, Nebraska, Conservation Survey Division

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Nebraska Groundwater Level (Decline & Rise), 1974

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Total Number Of Irrigation Wells Located In Nebraska Counties As Of 1974

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Location Of Registered Irrigation Wells In Nebraska As Of 1974

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Inventory Of Mining Operations In Nebraska, R. R. Burchett, Duane A. Eversoll

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Predicted Water-Level Declines For Alternative Groundwater Developments In The Upper Big Blue River Basin, Nebraska, P. W. Huntoon

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

A Mechanical Well Log Study Of The Popular Interval Of The Mississippian Madison Formation In North Dakota, C. W. Cook

Theses and Dissertations

The Poplar interval of interbedded evaporites and carbonates forms the uppermost part of the Mississippian Madison Forr.1ation in western North Dakota. A detailed mechanical well log study of the Poplar interval in North Dakota was conducted to interpret the Poplar's regional geology and to attempt to locate areas with potential for petroleum production. Limestone, dolomite, anhydrite and salt were differentiated using mechanical well logs.

The complex facies of the Madison are subdivided into para-time rock units (the Poplar interval is one) on the basis of extensive thin anhydrite beds which are considered time-parallel.

The base of the Poplar interval is …

An Analysis Of The Bourbeuse River As A Source Of Concrete Aggregate., David John Lexa

Masters Theses

"This thesis represents a study made to evaluate the sand and gravel deposits of the Bourbeuse River as a source of concrete aggregate. The Meramec River has long been a major source of aggregate in Missouri; however, proposed dam construction will limit the quantity available for exploitation. The Bourbeuse River, a tributary of the Meramec, was chosen for evaluation as an alternate source.

The study was conducted in two parts: an estimation of available quantity; a determination of the quality of the material. Quantity of material was estimated through an analysis of drill logs, correlated with the results of basic …

Interpretation Of Imagery Lineations, Logan Creek Area, Southeast Missouri, Gregory Paul Smith

Masters Theses

"Depletion of ore in Missouri's old lead districts and the opening of the state's new lead district adds impetus to understanding and delineating geologic structure in and adjacent to the new lead district. Image and geomorphic analysis, hydrologic data, and subsurface structural contour mapping are used in interpretation of geologic structure in Dent, Shannon, Reynolds, and Carter counties, Missouri. Unlike the time consuming surface geologic mapping, the modes of investigation used in this study enabled the writer to make a larger, regional-scale study with results comparable to those attainable by surface mapping. The area is covered by thick residual soils …