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Articles 59041 - 59070 of 59527

Full-Text Articles in Earth Sciences

Effect Of Soil Type, Slope, And Surface Conditions On Intake Of Water, F. L. Duley, L. L. Kelly May 1939

Effect Of Soil Type, Slope, And Surface Conditions On Intake Of Water, F. L. Duley, L. L. Kelly

Nebraska Agricultural Experiment Station: Historical Research Bulletins

In connection with investigations of runoff and erosion in the Great Plains an attempt has been made by means of artificial applications of water to determine certain principles concerning the effect of different soils and soil conditions on runoff and soil erosion. Such information is needed in planning all field operations dealing with soil erosion and moisture control. It is also needed in connection with watershed studies that are being established in the Central Great Plains, dealing with runoff and flood flows from larger areas. The method employed makes it possible to obtain comparable data on a wide range of …


Structural Geology At Llallagua, Bolivia, Lowell Moon Apr 1939

Structural Geology At Llallagua, Bolivia, Lowell Moon

Journal of the Minnesota Academy of Science

No abstract provided.


Geology Of A Portion Of The Bull Mountain Range Jefferson County, Montana, Thomas A. Greene Jan 1939

Geology Of A Portion Of The Bull Mountain Range Jefferson County, Montana, Thomas A. Greene

Bachelors Theses and Reports, 1928 - 1970

Work was first done on a known section, the south Boulder Section, in order to familiarize the student with the formations. Most of the area was mapped by plane table and telescopic alidade, general features being surveyed by automobile traverse and a pacing traverse.


A Report Of The Geology Of The Golden Sunlight Mining District, Roy A. Mccready Jan 1939

A Report Of The Geology Of The Golden Sunlight Mining District, Roy A. Mccready

Bachelors Theses and Reports, 1928 - 1970

This paper is a report of a geological survey made of an area of approximately fifty square miles lying Northeast of Whitehall, Montana, in the region of the Golden Sun­light Mine. The survey was made by a field party consisting of twenty-three members of the senior class of the Montana School of Mines.


An Outline Of The Principal Natural Resources Of Nebraska And Their Conservation, George E. Condra Jan 1939

An Outline Of The Principal Natural Resources Of Nebraska And Their Conservation, George E. Condra

George E. Condra Publications

Nebraska is well endowed with important natural resources, such as stone, clay, sand, soil, water, prairie, forests and wildlife. However, soil and water are our basic heritage because they, more than other resources, support native life, agriculture, industry, and social development.


An Outline Of Nebraska's Industries, George E. Condra Jan 1939

An Outline Of Nebraska's Industries, George E. Condra

George E. Condra Publications

The principal industries of Nebraska are summarized into the following groups: mineral, agriculture, manufacturing, transportation and publishing, and trade or mechandizing.


South Moccasin Kaolin Deposit, Walter Everly Jan 1939

South Moccasin Kaolin Deposit, Walter Everly

Bachelors Theses and Reports, 1928 - 1970

Kaolin has never been considered an important economic mineral in Montana. Deposits of Kaolin in this state are not described in the literature and apparently very few deposits have been found.


Life History Of The Ginko Petrified Forest Or The Autobiography Of An Ancient Oak Tree, George F. Beck Jan 1939

Life History Of The Ginko Petrified Forest Or The Autobiography Of An Ancient Oak Tree, George F. Beck

Geological Sciences Faculty Scholarship

An account of a fossilized log at Ginkgo Tree State Park written by the man who discovered the fossil trees and established there were Ginkgo trees in North America in the distant past.

The booklet is written from the perspective of one of the fossilized trees, tracing the geologic forces that led to it becoming a fossil.


The White River Oligocene Rodent Diplolophus, Erwin Hinckley Barbour, Thompson M. Stout Jan 1939

The White River Oligocene Rodent Diplolophus, Erwin Hinckley Barbour, Thompson M. Stout

Bulletin of the University of Nebraska State Museum (1924–2023)

The rich and varied nature of the mammalian faunas of the White River Oligocene has been recognized for many years, but the exact geologic succession is only now becoming known. In these faunal assemblages the rodents and lagomorphs appear to have been important elements, perhaps numerically as abundant in the Oligocene as are these same groups at present.


Deep Wells At Lincoln, Nebraska, E. C. Reed, G. E. Condra Jan 1939

Deep Wells At Lincoln, Nebraska, E. C. Reed, G. E. Condra

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Upper Carboniferous Formations In The Lower Platte Valley, G. E. Condra, O. J. Scherer Jan 1939

Upper Carboniferous Formations In The Lower Platte Valley, G. E. Condra, O. J. Scherer

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


The Geology Of Caldwell And Winn Parishes: Including Geologic Maps Of These Parishes., John Huner Jan 1939

The Geology Of Caldwell And Winn Parishes: Including Geologic Maps Of These Parishes., John Huner

LSU Historical Dissertations and Theses

No abstract provided.


Correlation Of The Amerada Petroleum Company Well Drilled Near Nehawka, Nebraska, E. C. Reed, G. E. Condra Jan 1939

Correlation Of The Amerada Petroleum Company Well Drilled Near Nehawka, Nebraska, E. C. Reed, G. E. Condra

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


A New Giant Camel Gigantocamelus Fricki, Gen. Et Sp. Nov., Erwin Hinckley Barbour, C. Bertrand Schultz Jan 1939

A New Giant Camel Gigantocamelus Fricki, Gen. Et Sp. Nov., Erwin Hinckley Barbour, C. Bertrand Schultz

Bulletin of the University of Nebraska State Museum (1924–2023)

A lower Pleistocene deposit containing fossil vertebrates near Broadwater, Morrill county, Nebraska, has been reported upon by the writers, beginning three years ago. Five fossil quarries have been opened since the site was discovered in 1936.


Classification Of The Tertiary System In Nebraska, Alvin Leonard Lugn Jan 1939

Classification Of The Tertiary System In Nebraska, Alvin Leonard Lugn

Department of Earth and Atmospheric Sciences: Faculty Publications

This paper represents the results of almost continuous research by the Nebraska State Geological Survey on Tertiary stratigraphy in Nebraska during a perIod of more than 10 years, with special attention to the present acceptable stratigraphic nomenclature. Cogent reasons are presented for the retention of such well-known names as White River, Arikaree, and Ogallala, all now redefined and elevated to group ranking. “Loup Fork” and “Loup River,” "Nebraska beds", and “Republican River" are considered obsolete. The application of fossil seed zones to problems of correlation is noted. The table of Tertiary Formations of Nebraska summarizes the Tertiary stratigraphy in Nebraska.


The Nebraska State Geological Survey And The "Valentine Problem", Alvin Leonard Lugn Sep 1938

The Nebraska State Geological Survey And The "Valentine Problem", Alvin Leonard Lugn

Department of Earth and Atmospheric Sciences: Faculty Publications

The Nebraska State Geological Survey is primarily concerned with the stratigraphic classification of the Tertiary lithologic units in this state. When the stratigraphic relationships are fully understood, the faunas can be properly and correctly related and named, whether the stratigraphic names or others are used. It should be understood that this survey, in determmmg its acceptance of stratigraphic names on the basis of priority, is making every effort to differentiate names which have been applied in a strictly stratigraphic sense from names which. while they may be older, were applied in only a geographic or faunal sense and have only …


Additions To The Late Tertiary Floras Of The Pacific Northwest, George F. Beck Aug 1938

Additions To The Late Tertiary Floras Of The Pacific Northwest, George F. Beck

All Faculty Scholarship for the College of the Sciences

The purpose of this paper and those which will follow, is to present new types of flora found in several older leaf localities of the Pacific Northwest. A study will also be made of a number of new localities as yet not reported upon in the literature. The present paper refers to several new species found at the Bull Quarry, Ellensburg, and the Brickyard locality, Spokane, Washington. Both sites have been studied and reported upon in the past, as noted in attached bibliography.


Washington Petrified Forests-Ginkgo Exotic Forest, George F. Beck Jul 1938

Washington Petrified Forests-Ginkgo Exotic Forest, George F. Beck

All Faculty Scholarship for the College of the Sciences

Seven years ago we began our study of the Ginkgo Petrified Forest in Central Washington. This is in reality a series of forests occurring at various horizons in the Yakima ( and Wenas?) basalts throughout a vertical range of some 2,000 feet, and in a belt 150 miles long, and 50 miles wide, centering at Vantage on the Columbia River.


Cheese Production In Nebraska. University Of Nebraska, Walter Kollmorgen Jul 1938

Cheese Production In Nebraska. University Of Nebraska, Walter Kollmorgen

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Ice Cream Production In Nebraska., Walter Kollmorgen Jul 1938

Ice Cream Production In Nebraska., Walter Kollmorgen

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Study And Correlation Of Belt And Cambrian Arkoses Near Limespur, Montana, Ryan C. Mcnamee Jun 1938

Study And Correlation Of Belt And Cambrian Arkoses Near Limespur, Montana, Ryan C. Mcnamee

Bachelors Theses and Reports, 1928 - 1970

In the vicinity of Limespur, Montana, a siding along the Northern Pacific Railroad near Whitehall, Montana, occurs a characteristic type of arkose where­ in many small red mineral grains are distributed throughout the rock mass. It is in this respect that this arkose differs from other arkoses in the surrounding region.


A Study On The Origin Of Banded Agate, James E. Driscoll Jun 1938

A Study On The Origin Of Banded Agate, James E. Driscoll

Bachelors Theses and Reports, 1928 - 1970

Agate in any of its varieties presents numerous problems in regard to its origin. Many types have been described and their beauty elaborated upon, but little has been written concerning their formation and the problems involved. The genesis of agate implicates an amazing complexity of physical and colloid­al chemistry, as well as, various principles of geology.


Underground Stratigraphy Of Montana, Virgil R. Chamberlain Jun 1938

Underground Stratigraphy Of Montana, Virgil R. Chamberlain

Bachelors Theses and Reports, 1928 - 1970

The purpose of this thesis is to study the subsurface stratigraphy of the state of Montana from information acquired from well logs, composite logs, and measured sections. Underground stratigraphy is important for the intelligent prospecting for oil, gas, or water. A knowledge of the strata beneath us can be gathered only by measurements of numerous outcrops or by deep drilling with careful sampling or logging of the formations passed through.


The Jefferson Canyon Gypsum Deposit., Arthur Talpt Jun 1938

The Jefferson Canyon Gypsum Deposit., Arthur Talpt

Bachelors Theses and Reports, 1928 - 1970

Gypsum deposits are widespread geographically and are in many geo­logic formations. Ordinarily their character and origin, for the most part sedimentary, are not difficult to ascertain. Near Lewis and Clark Caverns, east of Whitehall, Montana, occurs a deposit of gypsum unique in many re­spects.


Age Hardening Of Silver-Platinum Alloys, Robert A. Wilson May 1938

Age Hardening Of Silver-Platinum Alloys, Robert A. Wilson

Bachelors Theses and Reports, 1928 - 1970

The alloy system selected for study was the binary alloy of platinum and silver. An examination of the various silver alloy diagrams revealed that of several possible alloys, the silver platinum was the most suit­able with regard to solubility.


Alkali Leaching Of Antimony Sulphide And Electrolytic Recovery Of Antimony From The Resulting Leach Solution, Vincent J. Andrews May 1938

Alkali Leaching Of Antimony Sulphide And Electrolytic Recovery Of Antimony From The Resulting Leach Solution, Vincent J. Andrews

Bachelors Theses and Reports, 1928 - 1970

It is the purpose of this investigation to obtain some insight into optimum conditions for leaching Stib­nite with sodium hydroxide solution and also to steady the factors affecting the electrolysis of the resulting solution.


Electrolytic Recovery Of Copper And Zinc From Brass., V. Kent Loughran May 1938

Electrolytic Recovery Of Copper And Zinc From Brass., V. Kent Loughran

Bachelors Theses and Reports, 1928 - 1970

The reclamation of metals from scrap is becoming increasingly important in the metallurgical industry. Copper, because it does not corrode readily and is electronegative to most common metals, is peculiarly adapted to reclamation.


Magnesium - Tellurium By Powder Methods, George Gale May 1938

Magnesium - Tellurium By Powder Methods, George Gale

Bachelors Theses and Reports, 1928 - 1970

Today considerable work is being done in the compressed metal powder field which is gradually ob­taining prominence as a valuable branch of metallurgy. The mass of data, however, has led to many different ideas on the results of sintering.


Geology And Ore Deposits Of The Golden Messenger Mine, Lewis And Clark County, Helena, Montana., John C. Archibald Jr. May 1938

Geology And Ore Deposits Of The Golden Messenger Mine, Lewis And Clark County, Helena, Montana., John C. Archibald Jr.

Bachelors Theses and Reports, 1928 - 1970

The Golden Messenger Mine which is approximately twenty-three miles northeast of Helena, Montana, near York, on Trout Creek, has long presented several problems of both theoretical and practical interest.


The Geology And Ore Deposits Of Jardine, Montana, Wolter Duykers May 1938

The Geology And Ore Deposits Of Jardine, Montana, Wolter Duykers

Bachelors Theses and Reports, 1928 - 1970

The subject to be covered by this paper is based upon field study made during a six week stay at Jardine. The work began on June 19, 1937 and ended on July 31 of the same year.