Geology Commons^™

Conservation Of Land And Water Resources Of Nebraska, G. E. Condra

Conservation and Survey Division

No abstract provided.

Wood Occurring In The Ginkgo And Associated Petrified Forest (No. 1-The Gingko), George F. Beck

All Faculty Scholarship for the College of the Sciences

The most interesting single fossil tree, but at the same time the most difficult to determine in the Ginkgo Petrified Forest (Washington), is the tree after which this unusual petrified forest takes its name. The ginkgo is not only the world's oldest and most remarkable living tree, but it has long been regarded as holding the most striking fossil record of any living thing, plant or animal.

Grinding Thin Sections For Determining Petrified Woods, George F. Beck

All Faculty Scholarship for the College of the Sciences

The collector and student of petrified woods cannot long be satisfied to merely place these colorful and interesting specimens in the cabinet with the mere label, "petrified wood." Frequently determining the types of wood which once thrived in a given area is of importance to give a clue to climatic conditions of past geological ages. The collector should at least be qualified to recognize the more common woods and distinguish one family of trees from another.

A Preliminary Study Of The Animal Ecology Of The Niobrara Game Preserve, Watson E. Beed

Conservation and Survey Division

No abstract provided.

A Study And Application Of The Process Of Supergene Enrichment Of Silver Ores., Arthur C. Verling

Bachelors Theses and Reports, 1928 - 1970

In many deposits of silver ores the grade of the ore de­creases considerably a few hundred feet below the surface. It is believed that in many cases the better ores owe their richness in part to the process of sulphide enrichment. It is recognized, however, that many rich silver ores are hypogene deposits that have been affected very little, if any, by processes of enrichment.

Chemical Analyses Of Some Oil-Well Waters Of Russell, Ellis And Trego Counties, H. Everett Runyon

Master's Theses

Considerable work dealing with analysis of oil-well waters of other areas has been published, but to the knowledge of the author, none has been published dealing specifically with the waters of this area. While the waters dealt with in this paper are not far different from the waters of the Midcontinent area as a whole, there are certain differences which are noticeable. For instance strontium is found in the top waters of the Eldorado, Kansas field. None has been found in this area. The sulphate content of the top water here is very high. Both apparently cause trouble at times. …

The Extraction Of Manganese From Manganese Flue Dust., John Raymond Moore

Bachelors Theses and Reports, 1928 - 1970

It is estimated that 90 to 95% of the world’s consumption of manganese is used in the steel industry in the form of either ferromanganese or spiegeleisen. The remainder is used in the form of either salts or oxides, chloride, dioxide and monoxide.

A Study Of The Effect Of Oxygen On The Rate Of Dissolution Of Gold In Cyanide Solutions., John A. Cook

Bachelors Theses and Reports, 1928 - 1970

The accepted chemical reactions in the dissolution of gold by cyanide solutions require the presence of gold, cyanide, water, and oxygen. The importance of dissolved oxygen in cyanide solutions as a factor is recognized by those familiar with cyanidation. Manufacturers of cyanidation equipment realize the necessity of oxygen, as shown by the appliances they have developed which are attached to the agitators in order to saturate the cyanide solutions with air.

The Control Of The Grain Size Of Zinc, Oswald J. Wick

Bachelors Theses and Reports, 1928 - 1970

The use of zinc as a structural metal has been militated against by two of its properties, namely, its low tensile strength and its susceptibility to grain growth. The importance of these factors can be appreciated when it is realized that the tensile strength of coarsely crystalline cast zinc is 4,000 pounds per square inch, while finely crystalline cast zinc has a tensile strength of 12,000 pounds per square inch.

Contact Metamorphism In The Highlands, Frank Trask Jr.

Bachelors Theses and Reports, 1928 - 1970

On the southern margin of the Boulder Batholith, about twenty miles south of Butte in the Highland Mountains, there are many miles of contact between the igneous and sedi­mentary rocks. As two kinds of igneous rocks and many diff­erent kinds of sedimentary rock are present, it is an excell­ent place for the study of contact metamorphism.

A Preliminary Study Of Montana Copper - Nickel Ore, J. Argall Mcallister

Bachelors Theses and Reports, 1928 - 1970

Deposits of sulfides_, containing nickel and copper with associated platineferous minerals occur in the Stillwater Igneous Complex. This is a group of unusual igneous rocks situated in Stillwater and Sweetgrass counties in Montana.

The Effects Of Lime On The Amalgamation Of Gold., Rollien R. Wells

Bachelors Theses and Reports, 1928 - 1970

An amalgam is an alloy of mercury with other metals, and amalgamation is the art of making or forming amalgams. In metallurgical language the word is limited to the means adopted for the recovery of gold and silver from their ores by the use of mercury.

Geology And Ore Deposits Of The Golden Era And Goldfinch Mines, Argenta Mining District, Montana., Glenn C. Johnston

Bachelors Theses and Reports, 1928 - 1970

This report includes the results of geological investigation of a small area in the northern part of the Argenta mining district. Approximately two square miles were mapped. The underground working of the three mines only were accessible: the Goldfinch. Golden Era, and Mayday mines.

The Geology Of A Part Of The Bear River Range And Some Relationships That It Bears With The Rest Of The Range, Vic E. Peterson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The structure of the western three or four miles of the Bear River range east of Logan, Utah, has many times been alluded to in papers written locally on Cache Valley and the related ranges. There has not however, ever been, to the author's knowledge, an investigation made of this portion of the range for the express purpose of determining its exact structure. Although the area specifically covered by this present investigation is greatly inadequate to base the whole west range structure on, the author believes that the facts brought to light by the specific study of this area, added …

Geology Of Some Gold Deposits Of Montana, Leo Edwin Efraimson

Bachelors Theses and Reports, 1928 - 1970

Gold is one of the rarer metals in nature, and chemically it is one of the most inactive. Gold forms stable, natural compounds with few other elements, and only with metals.

An Analysis Of The Flowering Plants Of Nebraska, John Mack Winter

Conservation and Survey Division

No abstract provided.

Dünya Maden Haberleri̇, - -

Bulletin of the Mineral Research and Exploration

No abstract provided.

Palaeontologic And Geologic Consideration Of Early Man In Nebraska, Erwin Hinckley Barbour, C. Bertrand Schultz

Bulletin of the University of Nebraska State Museum

There has been much discussion recently relative to the geologic age of Yuma and Folsom artifacts. The writers submit the following palaeontological and geological data which may aid in a better interpretation of the subject. This paper deals with three localities in Nebraska where Yuma and Folsom implements have been found with extinct mammals; namely, the Scottsbluff Bison Quarry, the Sand Hill blow-out sites, and the Sioux County artifact sites.

Amherst Township, A Regional Study, Ruth C. Rockwood

Honors Papers

Amherst township was selected as the area to be studied because it was believed to be as nearly representative of the aspects of land and life in north central Ohio as any small area that could be found. It is located on a section of the Lake Plain which has somewhat parallel lines formed by three beach-ridges, and on the northern edge of the Glaciated Plain. Then, the quarrying of the world famous Berea sandstone gives somewhat of an individual aspect to the small towns within Amherst township.

The purpose of the paper is to describe the physical landscape, and …

Forests And Glaciers Of Southern Alaska, William S. Cooper

Journal of the Minnesota Academy of Science

No abstract provided.

M. T. A. Nin Çikiş Amaci, - -

Bulletin of the Mineral Research and Exploration

No abstract provided.

Water-Bearing Formations Of Nebraska, G. E. Condra, E. C. Reed

Conservation and Survey Division

No abstract provided.

The Ostracoda Of The Missouri Series In Nebraska, W. R. Johnson

Conservation and Survey Division

No abstract provided.

A Metallographic Study Of Primitive Copper Work., John A. Alley

Bachelors Theses and Reports, 1928 - 1970

The field of archaeology and that of metallurgy appear to be widely separated and in no way related. Work done in recent years, however, tends to show that, in many ways, the metallurgist can supplement and enhance the information gain­ed by the archaeologist, at least in regard to those objects which have been made of metal.

The Minerals Of New Mexico, Lee Mcguinness

Earth and Planetary Sciences ETDs

Inorganic bodies known as minerals make up, either in whole rock-masses or in isolated form, the material of the upper crust of the earth. Through the evidence furnished by this study of meteorites, we also infer that other bodies in the universe are made up of minerals, or at least those portions of them which are represented by meteorites.

Since minerals are, then, important in making up the observable part of the earth, a study of them is importance in any study of the earth. Because the variety of minerals occurring in New Mexico is large, it will be of …

The Sorption Of Fluoride Ion With Special Reference To Fluoride Removal From Potable Waters, Phillip W. West

Theses and Dissertations

The recent discovery that even very small concentrations of fluorides in drinking waters are sufficient to cause the serious dental dystrophy commonly known as mottled enamel, has around widespread interest and concern. Federal and State surveys have been conducted to determine the geographical distribution of the malady, and the fluoride contents of water supplies.

County dental surveys, conducted by the United States Public Health Department with the cooperation of local dentists, have located the regions throughout the country where mottled enamel is endemic and among these localities is an area in southeastern North Dakota and adjacent territory in South Dakota …