Open Access. Powered by Scholars. Published by Universities.®

Physical Sciences and Mathematics Commons

Open Access. Powered by Scholars. Published by Universities.®

Earth Sciences

Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 57781 - 57810 of 58714

Full-Text Articles in Physical Sciences and Mathematics

Mineralogy And Genesis Of The Vermiculite Deposits At Libby, Montana, Raymond Kujawa May 1942

Mineralogy And Genesis Of The Vermiculite Deposits At Libby, Montana, Raymond Kujawa

Bachelors Theses and Reports, 1928 - 1970

The problem considered in this report is one of the mineralogy and mode of formation of the extremely pure, large bodies of vermiculite. Mineralogically the ultrabasic intrusive, with which the economic mineral is associated, presents an array of rather unusual minerals. The determination of these minerals, their associations, and the sequence of alteration that lead to the formation of the vermiculite bodies, constitutes the problem.


Induction Furnace Smelting Of Montana Chromite, Millard L. Reyner May 1942

Induction Furnace Smelting Of Montana Chromite, Millard L. Reyner

Bachelors Theses and Reports, 1928 - 1970

In 1939 the total world production of crude chromite was approximately 1,167,000 metric tons; of which the United States produced only 3,672 metric tons and imported over 317,500 metric tons. Imports came mostly from the Philippine Islands, Cuba, South Africa, and Rhodesia.


Chromite Deposits Near Red Lodge And Silver Star, Montana, Edmond F. Smigel Apr 1942

Chromite Deposits Near Red Lodge And Silver Star, Montana, Edmond F. Smigel

Bachelors Theses and Reports, 1928 - 1970

The Red Lodge and Silver Star chromite deposits of Montana have stimulated much interest during periods of war. The Red Lodge deposit is 25 miles southwest of Red Lodge which is also the nearest railroad point. Several workings are scattered throughout the area, exposing lense-like ore bodies averaging 33% chrome oxide. Silver Star is a much smaller deposit 5 miles west of Silver Star, Montana, which is its nearest rail­road point. Lenses of chromite are exposed by pits and trench­es, which average approximately 36% chromic oxide.


The Beneficiation Of Montana Silver Star Chromite Ore, Edwin J. Bride Apr 1942

The Beneficiation Of Montana Silver Star Chromite Ore, Edwin J. Bride

Bachelors Theses and Reports, 1928 - 1970

It is known that there are large deposits of chromium ore in Stillwater and Carbon Counties in South-Central Montana. The late James F. Kemp of Columbia University, stated in 1928, that these were the largest chromium deposits in the United States and probably in the world, although they were not considered of commercial grade as compared with foreign ores.


The Present Status Of The Soil Survey In Minnesota, P. R. Mcmiller Apr 1942

The Present Status Of The Soil Survey In Minnesota, P. R. Mcmiller

Journal of the Minnesota Academy of Science

No abstract provided.


An Investigation Of The Ores Of The Big Seven Mine, Neihart, Montana, Francis L. Wilson Apr 1942

An Investigation Of The Ores Of The Big Seven Mine, Neihart, Montana, Francis L. Wilson

Bachelors Theses and Reports, 1928 - 1970

During the course of this investigation of the ores of the Big Seven mine, Neihart, Montana, the writer has attempted, through a mi­croscopic study of polished sections, to ascertain the hypogene or supergene character of the ore minerals present in the ore suite.


A Review Of The Daimonelix Problem, C. Bertrand Schultz Mar 1942

A Review Of The Daimonelix Problem, C. Bertrand Schultz

University Studies (University of Nebraska): Papers

THE first paleontological expedition of the University of Nebraska State Museum was organized in the summer of 1891 and was led by Erwin H. Barbour, now Director Emeritus of the Museum. The most important and interesting discoveries made during the season were some very peculiar spiral fossils called by the field party "Devil's Corkscrews," or Daimonelix,l which were found in the Miocene deposits near Harrison in Sioux County, Nebraska. During the fifty years that have intervened scientists have tried to determine the origin of these strange forms. Several controversies arose, and although various theories have been proposed, none as yet …


Geologic Field Mapping In An Area Eight Miles North Of Three Forks, Montana, H. E. Lillis Jan 1942

Geologic Field Mapping In An Area Eight Miles North Of Three Forks, Montana, H. E. Lillis

Bachelors Theses and Reports, 1928 - 1970

The Three Forks are includes parts of Jefferson, Madison, Broadwater Pond Gallatin counties, Montana. Sedimentary formations lie at the surface nearly everywhere in the area, and the rugged surface topography has been developed through the folding and tilting of these formations and their dif­ferential erosion.


M.T.A. Ensti̇tüsünün Yedi̇nci̇ Çalişma Yilinin Tekni̇k Bi̇lançosu, - - Jan 1942

M.T.A. Ensti̇tüsünün Yedi̇nci̇ Çalişma Yilinin Tekni̇k Bi̇lançosu, - -

Bulletin of the Mineral Research and Exploration

No abstract provided.


Anadolu Ofi̇oli̇tleri̇ni̇n Yaşlarina Mütedai̇r Malumat, P. Arni̇ Jan 1942

Anadolu Ofi̇oli̇tleri̇ni̇n Yaşlarina Mütedai̇r Malumat, P. Arni̇

Bulletin of the Mineral Research and Exploration

No abstract provided.


Thickness And Structural Study Of Major Divisions Of Cretaceous System In Nebraska, Paul Fuenning Jan 1942

Thickness And Structural Study Of Major Divisions Of Cretaceous System In Nebraska, Paul Fuenning

Department of Earth and Atmospheric Sciences: Faculty Publications

The purpose of this paper is to present isopach maps of certain stratigraphic divisions of the Cretaceous system and structure-contour maps of certain horizons of that system in Nebraska. Tables of factual data also are included. The maps indicate clearly that certain structural "highs" such as the Chadron-Cambridge axis and the Sioux Falls "high," in conjunction with a large well defined basin across central Nebraska and another deep basin west of the Chadron-Cambridge axis, dominated the structural and depositional history of Nebraska during the Cretaceous period.


Harbi̇ Umumi̇ Ve Son Ci̇han Savaşi Seneleri̇nde Dünya Madenci̇li̇ği̇, - - Jan 1942

Harbi̇ Umumi̇ Ve Son Ci̇han Savaşi Seneleri̇nde Dünya Madenci̇li̇ği̇, - -

Bulletin of the Mineral Research and Exploration

No abstract provided.


Etütler Bazi Mi̇neral İsi̇mleri̇ne Dai̇r İncelemeler, Hadi̇ Yener Jan 1942

Etütler Bazi Mi̇neral İsi̇mleri̇ne Dai̇r İncelemeler, Hadi̇ Yener

Bulletin of the Mineral Research and Exploration

No abstract provided.


Kirşehi̇r-Boğazliyan Çayi Bölgesi̇ni̇n Jeoloji̇si̇ Ve Maden Kaynaklari, V. Stchtpi̇nsky Jan 1942

Kirşehi̇r-Boğazliyan Çayi Bölgesi̇ni̇n Jeoloji̇si̇ Ve Maden Kaynaklari, V. Stchtpi̇nsky

Bulletin of the Mineral Research and Exploration

No abstract provided.


Guleman Kromi̇t Yataklari, V. Kovenko Jan 1942

Guleman Kromi̇t Yataklari, V. Kovenko

Bulletin of the Mineral Research and Exploration

No abstract provided.


Dokümantasyon Maden Di̇rekleri̇ni̇n Muhafazasi, - - Jan 1942

Dokümantasyon Maden Di̇rekleri̇ni̇n Muhafazasi, - -

Bulletin of the Mineral Research and Exploration

No abstract provided.


Dünya Maden Haberleri̇, - - Jan 1942

Dünya Maden Haberleri̇, - -

Bulletin of the Mineral Research and Exploration

No abstract provided.


Yüksek Firin Cürufundan Çi̇mento, - - Jan 1942

Yüksek Firin Cürufundan Çi̇mento, - -

Bulletin of the Mineral Research and Exploration

No abstract provided.


İstati̇sti̇k Ve Fi̇yat, - - Jan 1942

İstati̇sti̇k Ve Fi̇yat, - -

Bulletin of the Mineral Research and Exploration

No abstract provided.


Umumi̇ Maden Durumu Türki̇ye Madenci̇li̇ği̇ni̇n 1941 Bi̇lançosu, - - Jan 1942

Umumi̇ Maden Durumu Türki̇ye Madenci̇li̇ği̇ni̇n 1941 Bi̇lançosu, - -

Bulletin of the Mineral Research and Exploration

No abstract provided.


1941 De Dünya Madenci̇li̇ği̇, - - Jan 1942

1941 De Dünya Madenci̇li̇ği̇, - -

Bulletin of the Mineral Research and Exploration

No abstract provided.


Etütler Petrol Bulunmasi, Cevad E. Taşman Jan 1942

Etütler Petrol Bulunmasi, Cevad E. Taşman

Bulletin of the Mineral Research and Exploration

No abstract provided.


Petrol Arama Sondajlari Mali̇yetleri̇, Kemal Lokman Jan 1942

Petrol Arama Sondajlari Mali̇yetleri̇, Kemal Lokman

Bulletin of the Mineral Research and Exploration

No abstract provided.


Türk Krom Cevherleri̇ndeki̇ İsti̇haleler, W. De Vi̇jkerslooth Jan 1942

Türk Krom Cevherleri̇ndeki̇ İsti̇haleler, W. De Vi̇jkerslooth

Bulletin of the Mineral Research and Exploration

No abstract provided.


Artvi̇n Bölgesi̇ Kuvarshane Bakir Madenleri̇, V. Kovenko Jan 1942

Artvi̇n Bölgesi̇ Kuvarshane Bakir Madenleri̇, V. Kovenko

Bulletin of the Mineral Research and Exploration

No abstract provided.


Türki̇yede Miknatis İnhi̇raflari, Hidayet Turanli Jan 1942

Türki̇yede Miknatis İnhi̇raflari, Hidayet Turanli

Bulletin of the Mineral Research and Exploration

No abstract provided.


Bursa İle Tercan Arasindaki̇ Bölgeni̇n Mukayeseli̇ Strati̇grafi̇si̇, V. Stehepi̇nsky Jan 1942

Bursa İle Tercan Arasindaki̇ Bölgeni̇n Mukayeseli̇ Strati̇grafi̇si̇, V. Stehepi̇nsky

Bulletin of the Mineral Research and Exploration

No abstract provided.


Küçük Yozgat Ci̇varinda Bulunan Memeli̇ Hayvanat Fosi̇lleri̇, B,S. Tschachtli̇ Jan 1942

Küçük Yozgat Ci̇varinda Bulunan Memeli̇ Hayvanat Fosi̇lleri̇, B,S. Tschachtli̇

Bulletin of the Mineral Research and Exploration

No abstract provided.


Dünya Maden Haberleri̇, - - Jan 1942

Dünya Maden Haberleri̇, - -

Bulletin of the Mineral Research and Exploration

No abstract provided.


İstati̇sti̇k Ve Fi̇yatlar, - - Jan 1942

İstati̇sti̇k Ve Fi̇yatlar, - -

Bulletin of the Mineral Research and Exploration

No abstract provided.