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Odor Report, Walter A. Lawrance

Walter Lawrance Papers

No abstract provided.

Analytical Data, Walter Lawrance

Walter Lawrance Papers

No abstract provided.

Benthal Activity, Walter Lawrance

Walter Lawrance Papers

No abstract provided.

Analytical Data, Walter A. Lawrance

Walter Lawrance Papers

No abstract provided.

Pool Studies, Walter A. Lawrance

Walter Lawrance Papers

No abstract provided.

Press Reports, Walter A. Lawrance

Walter Lawrance Papers

No abstract provided.

Benthal Activity, Walter A. Lawrance

Walter Lawrance Papers

No abstract provided.

Odor Report, Walter A. Lawrance

Walter Lawrance Papers

No abstract provided.

Press Reports, Walter A. Lawrance

Walter Lawrance Papers

No abstract provided.

Development Of Water Quality Criteria For Aquatic Life, Clarence M. Tarzwell

United States Environmental Protection Agency: Publications

It is now recognized that water pollution is an important problem, that it becomes more widespread and serious as population and industry expand, and that something must be done if aquatic life resource are to be saved and their productivity maintained. In the past there has been a great deal of uncertainty in approaching this situation and a general lack of understanding of the details and ramification of the overall problem. In the efforts for the abatement of pollution, only a few clearcut objectives have been established. Knowledge is lacking as to what the objectives should be. There is still …

Groundwater Map Of Nebraska Relation Fall 1962 Observation Well Readings To Median, E. C. Reed

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Mineralogy Of Rose Muscovite And Lepidolite From The Harding Pegmatite, Taos County, New Mexico, Durga Nath Rimal

Earth and Planetary Sciences ETDs

The main purpose of the present work is to obtain quantitative data on alkali metals present in rose musco­vite and lepidolite of the Harding pegmatite and to try to correlate them with the present knowledge of the geology of this pegmatite body.

Geology Of The Sedillo-Cedro Canyon Area, Bernallio County, New Mexico, Bert Norman Brown

Earth and Planetary Sciences ETDs

This report was undertaken primarily as a study of Pennsylvanian strata which crop out in the Sedillo-Cedro Canyon area. The subdivision of the Madera formation as proposed by Read and others (1944) was adopted for purposes of mapping. This subdivision is based on a dominance of either limestone or clastic rocks in the formation.

The writer was unable to measure a Pennsylvanian section in the field due to thickness changes, facies gradations, and faults which were often concealed by dense soil cover. However, by visually traversing the area on aerial photographs using arbitrarily chosen zones, estimated thicknesses for the members …

Permian Stratigraphy And Stratigraphic Paleontology Of The Colorado Plateau, Peggy L. Kirkland

Earth and Planetary Sciences ETDs

The purpose of this study is to synthesize a portion of this vast source of data in order to arrive at a better understanding of Permian stratigraphy.

Geology Of Torreon And Pedricenas Quadrangles, Coahuila And Durango, Mexico, Russell E. Clemons

Earth and Planetary Sciences ETDs

The Torreon and Pedricenas quadrangles are in central Mexico between parallels 25 degrees and 26 degrees N. and meridians 103 degrees 20' and 104 degrees W.; together they embrace 7,600 square kilometers. The northeastern corner of the area lies in the Bolson de Mapimi; most of the area, however, is in the Sierra Madre Oriental.

Hypogene Zoning In The Lordsburg Mine District, Hidalgo County, New Mexico, K. F. Clark

Earth and Planetary Sciences ETDs

Although descriptions of the Lordsburg mining district have been in the literature for more than fifty years, no reference to hypogene zoning of the ores has been made. The present work is mainly concerned with hypogene zoning and related phenomena. Hypogene zoning, temperature of formation, and paragenesis are interrelated factors in ores differentiated from magmas. All three processes are discussed in this thesis. Other aspects of the mining district are mentioned only where relevant.

Stratigraphy And Paleontology Of The Pennsylvanian Rocks Of The Rim Of The Sandia Mountains, Sandoval And Bernalillo Counties, New Mexico, Paul Anthony Catacosinos

Earth and Planetary Sciences ETDs

The primary purpose of this investigation was to determine the presence or absence of pre-Pennsylvanian strata in the central part of the Sandia Mountains, along their western scarp. No strata older than Pennsylvanian were found by the author in this area.

The strata present in the Sandia Rim include the upper clastic member of the Sandia formation and part of the lower gray limestone member of the Madera limestone, both of Pennsylvanian age.

The Sandia formation is a predominantly clastic unit of sandstone, shale, limestone, and conglomerate which rests unconformably on a profound erosion surface formed on the Precambrian Sandia …

Stratigraphy And Geologic Structure Of Uppermost Cretaceous And Tertiary Rocks Of The East-Central Part Of The San Juan Basin, New Mexico, Elmer H. Baltz

Earth and Planetary Sciences ETDs

An area of about 1,300 square miles was mapped in parts of Rio Arriba, Sandoval, and McKinley Counties, New Mexico. The area is in the east-central part of the San Juan Basin, a large structural and drainage basin in the east-central part of the Colorado Plateau province. Six relatively distinct physiographic sectors in the area are named here: the Penistaja Cuestas; Largo Plains; Tapicitos Plateau; Yeguas Mesas; San Pedro Foothills; and Northern Hogback Belt.

The mapped area lies in the Central basin of the San Juan Basin and is bounded on the east by the Nacimiento and French Mesa-Gallina uplifts …

Geology Of The Empire Abo Field, Eddy County, New Mexico, Don O. Snyder

Earth and Planetary Sciences ETDs

The Empire Abo field is situated in north-central Eddy County, New Mexico, and constitutes the edge of the Northwest Shelf province of the Delaware basin. The field occupies parts of 25 sections in T. 17 and 18 S., R. 27, 28, and 29 E.

The object of this study is to delineate the transition zone of lower Leonard (Permian) basinal deposition and shelf facies with a detailed study of fore-reef, reef, and back-reef facies with emphasis on sedimentational and stratigraphic relationships.

Crystal Habit Modification Of Sodium Chlorate, Michael R. Keegan

Bachelors Theses and Reports, 1928 - 1970

All single crystals have a particular habit or morphology. The crystal habit refers to the relative degree of development of crystallographic planes into surfaces which make up the external appearance of the single crystal.

In this paper, NaClO3 is used as a parent crystal. Its simple cubic habit is modified to tetrahedral by the use of impurities of SO4=, S2O3=, Cr2O7=, and NO3-. The degree of habit change is studied as a function of impurity concentration and temperature. The problem and phenomena are explained in terms of surface chemistry and thermodynamics.

Physico-Chemical Principles Of Sixteenth Century Metallurgy, Robert E. Johnson

Bachelors Theses and Reports, 1928 - 1970

Following a review of sixteenth century metallurgical literature and a discussion of Gibbs free energy, this thesis discusses thermodynamic considerations of galena (PbS) reduction by iron from a lead assay of this period. The importance of fluxes in this assay is emphasized. The discussion covers both equilibrium and non-equilibrium conditions at 1100 degrees Celsius. Possible substitutes for iron are also covered.

Information from twenty-one small controlled lead assays is correlated with the thermodynamic discussion to determine the purpose of each constituent in the assay.

The Beneficiation Of Titaniferous-Magnetite Sands, Ronald Lloyd Nordwick

Bachelors Theses and Reports, 1928 - 1970

The purpose of this investigation of beneficiation methods is to develop and study possible economic methods for recovering an iron-titanium concentrate of sufficient purity to meet metallurgical requirements for subsequent direct reduction to pig iron and a high titanium slag.

Stress-Corrosion Cracking Of Brass, Paul A. Fossey

Bachelors Theses and Reports, 1928 - 1970

the mechanism of stress-corrosion cracking of brass has been sought for many years. Investigators have proposed many mechanisms, but each of these mechanisms has always had several drawbacks. This paper presents an account of experimental work done in the laboratory on this subject and compares it to the work of previous investigations. It evaluates the mechanisms presented by investigators and shows the failures of these mechanisms. A theory of Nitrogen Embrittlement is presented and an evaluation of this theory with experimental work follows.

Experimental Arc Furnace Smelting Of Titaniferous Iron Sands From The Northern Oregon Coast, Allan P. Herring

Bachelors Theses and Reports, 1928 - 1970

This investigation is an attempt to experimentally smelt titaniferous iron sands from the Northern Oregon Coast in a laboratory arc furnace.

The Effect Of Ph Upon Chelation Reactions In Montmorillonite Clays, Joseph Michael Keane

Bachelors Theses and Reports, 1928 - 1970

The purpose of this thesis is to investigate several chelation reactions and determine the effect of variable pH upon these reactions.

An Investigation Of The Sintering Of Iron-Wire Compacts, George L. Vivian

Bachelors Theses and Reports, 1928 - 1970

A study of the sintering of iron has been made by observing the rate of bonding of iron wires wound on iron spools. The specimens were sintered at a constant temperature of 850c in vacuum furnaces capable of producing pressures of 10-5 to 10-4 mm of mercury, and the growth of the bond between wires was observed as a function of time.

It has been concluded that the volume-diffusion mechanism is strongly operating in the sintering of iron at 850c, but in an evacuated system, the evaporation-condensation mechanism also contributes to the sintering process.

The Effect Of Chelates On Phosphorus Availability And Mobility, Salah Ahmed Tahoun

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Soil-phosphorus relations and plant-phosphorus relations have attracted the interest of many investigators since Liebig introduced his famous theory about the importance of the mineral matters to the plant in 1840. It was soon realized that phosphorus nutrition was a problem not easily solved for two reasons. 1. The added phosphorus fertilizers, soon after soil application are converted by some reactions in the soil to complex compounds far less soluble, consequently less available to the plant. Conclusions about this process led to controversial debates until it was discovered that a general statement covering all soils was impossible since the reactions involved …

Relations Between Transpiration, Leaf Temperatures, And Some Environmental Factors, Ronald Kay Tew

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Transpiration is the loss of water in vapor form from a plant. This is essentially the same process as evaporation except that it is modified by plant structure. Large quantities of water are removed from the soil, transferred through the conducting tissues of the plant, and dissipated into the air each day. As soon as the water is lost to the atmosphere, it becomes unavailable for human use.

On The Enthalpy And Entropy Of Soil Water, Robert A. Kohl

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Just twenty years have passed since the first papers were published on the application of chemical thermodynamics to the soil-water system (11, 14). Since then, soil physicists have used thermodynamics in an attempt to characterize and learn more about this intricate system.

Upper Cretaceous Stratigraphy Of The Central Part Of Utah, Fredric R. Van De Graaff

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Rocks of Late Cretaceous age in the central part of Utah are dominantly elastic. In general, the sediments in the west are of conglomerate and sandstone of continental origin; the sediments in the east are of sandstone and shale of marine origin, These rocks were deposited at or near the western shore of a sea which extended from the Arctic to the Gulf of Mexico. The strand line lay in a general northern direction through Utah with land to the west and marine water to the east.