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Articles 1531 - 1545 of 1545

Full-Text Articles in Earth Sciences

Maine Pegmatite Mines And Prospects And Associated Minerals, Maine Geological Survey Mar 1957

Maine Pegmatite Mines And Prospects And Associated Minerals, Maine Geological Survey

Maine Collection

Maine Pegmatite Mines and Prospects and Associated Minerals

Minerals Resources Index No.1 - Maine Geological Survey

Department of Development of Industry and Commerce, Augusta, Maine (March 1, 1957).

Contents: Introduction / Acknowledgments / Explanatory Considerations / Selected Bibliography / Pegmatite Mines and Prospects - Alphabetical Index / Pegmatite Mines and Prospects - County-Township Index / Pegmatite Mines and Prospects - Map Index.

Also Includes: Southwestern Maine - Pegmatite Localities and Access Highways / Index Map Showing Mining Districts and Detailed Plate Locations


Geochemical Exploration For Hidden Ore Deposits, D. H. Yardley May 1956

Geochemical Exploration For Hidden Ore Deposits, D. H. Yardley

Journal of the Minnesota Academy of Science

No abstract provided.


Genetic Study Of Some Pyrrhotite Deposits Of Maine And New Brunswick, Dept. Of Development Of Industry And Commerce Jan 1956

Genetic Study Of Some Pyrrhotite Deposits Of Maine And New Brunswick, Dept. Of Development Of Industry And Commerce

Maine Collection

Genetic Study of Some Pyrrhotite Deposits of Maine and New Brunswick

by Robert S. Houston

Maine Geological Survey - Bulletin 7

Department of Development of Industry and Commerce, Augusta, Maine (January, 1956).

Contents: Abstract / Introduction / Field and Laboratory Studies / Regional Geography / Regional Geology / Pyrrhotite Deposits / Description of Individual Deposits / Literature Cited



Report Of The State Geologist 1953-1954, Maine Geological Survey Jul 1955

Report Of The State Geologist 1953-1954, Maine Geological Survey

Maine Collection

Report of the State Geologist 1953-1954.

Maine Geological Survey - Maine Development Commission, Augusta, Maine - July 1955.

Contents: Joseph M. Trefethen -- Review of Maine Mineral Outlook / Henry W. Allen -- Limestone Investigations, 1953-54 / Wm.T. Forsyth -- Airbourne Magnetometer Survey in Eastern Maine / Gary M. Boone -- Petrology of the Farmington, Maine Area / Joseph M. Trefethen, Henry Allen, and Wm. T. Forsyth -- Scheelite Occurrences in Maine / Wm.T. Forsyth -- Beneficiation Tests on the Warren Sillimanite Gneiss / Wm. T. Forsyth -- Pyrrhotite Mineralization at Iron Hill, Gardiner, Maine / Joseph M. Trefethen -- …


Maine Geological Survey - Bulletin 6 : Pegmatites And Associated Rocks In The Newry Hill Area, Oxford County, Maine., Vincent E. Shainin, Louis F. Dellwig Jan 1955

Maine Geological Survey - Bulletin 6 : Pegmatites And Associated Rocks In The Newry Hill Area, Oxford County, Maine., Vincent E. Shainin, Louis F. Dellwig

Maine Collection

Maine Geological Survey - Bulletin 6 : Pegmatites and Associated Rocks in the Newry Hill Area, Oxford County, Maine.

Joseph M. Trefethen, State Geologist.

by Vincent E. Shainin, University of Maine and Louis F. Dellwig, U.S. Geological Survey.

Maine Development Commission, Augusta, Maine, 1955



Report Of The State Geologist 1951-1952, Maine Geological Survey Dec 1953

Report Of The State Geologist 1951-1952, Maine Geological Survey

Maine Collection

Report of the State Geologist 1951-1952.

Maine Geological Survey - Maine Development Commission, Augusta, Maine - December, 1953.

Contents: Joseph M. Trefethen -- New England Mineral Resources / Henry Allen -- Progress Report of Limestone Survey, Knox County / Wm. Forsyth -- Mineralogical Variations of the Ellsworth Schist in Blue Hill, Maine / Lawrence A. Wing -- Preliminary Report on Eastern Maine Granites / Kern Jackson -- A Preliminary Report on the Geology of a Portion of the Rumford Quadrangle, Maine / Robert M. Zink -- Certain Aspects of the Ecology of Venus and Mya at Bunganuc and at Morgan …


Progress Report: Chemical Quality Of The Surface Waters In The Loup River Basin, Nebraska, John G. Connor Jun 1951

Progress Report: Chemical Quality Of The Surface Waters In The Loup River Basin, Nebraska, John G. Connor

United States Geological Survey: Publications

The Loup River and its tributaries transport moderate amounts of siliceous minerals from the sand hills region of north-central Nebraska to the Platte River near Columbus, Nebr. Predominant chemical characteristics of these waters are a high percentage of silica, moderate hardness, and a low percentage of sodium. The composition of the Loup River water is influenced by the geologic formations through which ground water, a major contributor to the flows of the Loup River branches, has percolated. Investigation of water quality at or near proposed dam sites in the Loup River basin indicates that if soil and drainage conditions are …


Report Of The State Geologist 1947-1948, Maine Geological Survey Mar 1949

Report Of The State Geologist 1947-1948, Maine Geological Survey

Maine Collection

Report of the State Geologist 1947-1948.

Maine Geological Survey - Maine Development Commission, Augusta, Maine - March 1949.

Contents: Activity of the Maine Geological Survey, 1947-48 / Joseph M. Trefethen -- Review of the Aroostook County Manganese Deposits / Joseph M. Trefethen -- Notes on Ground Water Conditions in Maine / Joseph M. Trefethen -- The Desert of Maine / Henry Allen and Elbert Pratt -- Reconnaissance Surveys of Limestones in Franklin County, Maine / Lawrence Wing and Arthur Dawson -- Preliminary Report on Asbestos and Associated Rocks of Northwestern Maine / Lawrence Goldthwait -- Clay Survey 1948 / Earl …


Maine Geological Survey - Bulletin 4 : Manganese Deposits Of Aroostook County, Maine., Ralph L. Miller Apr 1947

Maine Geological Survey - Bulletin 4 : Manganese Deposits Of Aroostook County, Maine., Ralph L. Miller

Maine Collection

Maine Geological Survey - Bulletin 4 : Manganese Deposits of Aroostook County, Maine.

Joseph M. Trefethen, State Geologist

by Ralph L. Miller

Prepared in cooperation with the Geological Survey of the United States Department of the Interior. State Geologist and Maine Development Commission, Augusta, Maine, April 1, 1947.

Contents: Abstract / Introduction / General Geology / Economic Geology / Descriptions of Deposits /


Maine Geological Survey - Bulletin 3 : Petrology Of The Columbia Falls Quadrangle, Me., Ruth D. Terzaghi Mar 1946

Maine Geological Survey - Bulletin 3 : Petrology Of The Columbia Falls Quadrangle, Me., Ruth D. Terzaghi

Maine Collection

Maine Geological Survey - Bulletin 3 : Petrology of the Columbia Falls Quadrangle, Me.

Joseph M. Trefethen, State Geologist

by Ruth D. Terzaghi

Maine Development Commission, Augusta, Maine, March 1, 1946.



The Extraction Of Tantalum And Columbium From Tantalite, Stanley P. Wisniewski May 1935

The Extraction Of Tantalum And Columbium From Tantalite, Stanley P. Wisniewski

Bachelors’ Theses

In the summer of 1932, the Milwaukee Public Museum, sent an expedition to the Bad Lands and Black Hills of South Dakota, under the direction of Dr. Ira Edwards, Curator of Geology in that institution. It was at this time that the author, a member of this group, while studying the pegmatites of the Black Hills, became interested in the tantalum-columbium bearing minerals of that region, namely tantalite and columbite. At that time the writer made a detailed mineralogical study of these two minerals, as well as a thorough investigation of their occurrence in that region. In the fall of …


Latitudinal Variations, Lauren James Hervey Jan 1933

Latitudinal Variations, Lauren James Hervey

Bachelors’ Theses

Because of the peculiar way the problem that is dealt with in this paper evolved, it is necessary to indicate some of the reasoning and a few of the steps that led to the final statement of the problem in its simplified form.


Some Ore Deposits In Maine And The Milan Mine, New Hampshire, William H. Emmons Jan 1910

Some Ore Deposits In Maine And The Milan Mine, New Hampshire, William H. Emmons

Maine Collection

Some Ore Deposits in Maine and The Milan Mine, New Hampshire

by William H. Emmons

Department of the Interior, United States Geological Survey - Bulletin 432

Washington, D.C. (1910).

Contents: Introduction / Geology / Ore Deposits / Descriptions of Mines / Mines of Hancock County / Mines of Washington County / Mines in Somerset and Oxford Counties / Milan Mine, New Hampshire / Index


Geologic Atlas Of The United States: Scotts Bluff Folio Nebraska, N. H. Darton Jan 1903

Geologic Atlas Of The United States: Scotts Bluff Folio Nebraska, N. H. Darton

United States Geological Survey: Publications

Explanation

The Topographic Map

The Geologic Map

Description of the Scotts Bluff Quadrangle

Geography

Geology

Stratigraphy

Eocene Period

Neocene Period

Pleistocene Period

Pre-Eocene Rocks

Brief Geological History of the Central Great Plains Region

Economic Geology

Underground WAters

Irrigation

Volcanic Ash

Ages of Rocks

Topographic Sheet

Areal Geology Sheet

Columnar Section Sheet

Illustration Sheet


Third Report Of The Geological Survey In Kentucky, Made During The Years 1856 And 1857, David Dale Owen Dec 1856

Third Report Of The Geological Survey In Kentucky, Made During The Years 1856 And 1857, David Dale Owen

Administrative Report--KGS

Third report. Assisted by Robert Peter (geochemist), Sidney S. Lyon (topographer), Leo Lesquereux (paleontologist), and Edward T. Cox (paleontologist).