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Browse more than 160,000 publications authored by our scientists over the past 100+ year history of the USGS.  Publications available are: USGS-authored journal articles, series reports, book chapters, other government publications, and more.

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Chemical analyses of igneous rocks published from 1884 to 1900, with a critical discussion of the character and use of analyses

In the first two or three decades of the last century, when the study of rocks as such was being differentiated from that of minerals and of rock terranes that is, when the science of petrogaphy was in its infancy little attention was paid to their chemical features. It is true that a number had been analyzed, but these were for the most part rocks that were of such a character as to lead the inve
Authors
H.S. Washington

Chemical composition of igneous rocks expressed by means of diagrams, with reference to rock classification on a quantitative chemico-mineralogical basis

The value of graphical methods for expressing relative quantities has been well established in all kinds of statistical exposition and discussion. Their use in conveying definite conceptions of relative quantities of chemical and mineral components of rocks is becoming more and more frequent, and the value of the results in some cases can not be overestimated. This is especially true when a series
Authors
J. P. Iddings

Columbia folio, Tennessee

No abstract available.
Authors
Charles Willard Hayes, Edward Oscar Ulrich

Contributions to economic geology, 1902

This bulletin has been prepared primarily with a view to securing prompt publication of the economic results of investigations by the United States Geological Survey. It is designed to meet the wants of the busy man, and is so condensed that he will be able to obtain results and conclusions with a minimum expenditure of time and energy. It also affords a better idea of the work which the Survey as
Authors
Samuel Franklin Emmons, C. W. Hayes

Contributions to the geology of Washington

Central Washington includes a part of two great topographic provinces; the great plain of the Columbia and the Cascade Range. The former, in its position and general desert-like character, suggests at once a resemblance to the Great Basin of Utah and Nevada; and the vastness of the desert plain is emphasized by the snowy peaks of the Cascades along its western border. These provinces are not to be
Authors
G. O. Smith, Bailey Willis

Cranberry folio, North Carolina-Tennessee

No abstract available.
Authors
Arthur Keith

Descriptive geology of Nevada south of the fortieth parallel and adjacent portions of California

No abstract available.
Authors
Josiah Edward Spurr

Drainage modifications in southeastern Ohio and adjacent parts of West Virginia and Kentucky

The field work upon which this paper is based was carried on intermittently for several years. During the season of 1899 the work in Washington County, Ohio, was conducted under the direction of the Ohio State Academy of Science, the expenses being covered by a grant from the Emerson McMillin special research fund. The field work of the season of 1900 was done under the direction of Dr. T. C. Cham
Authors
W. G. Tight

Elkland-Tioga folio, Pennsylvania

No abstract available.
Authors
Myron L. Fuller, William C. Alden

Ellensburg folio, Washington

No abstract available.
Authors
George Otis Smith

Forest conditions in the Cascade Range Forest Reserve, Oregon

No abstract available.
Authors
H.D. Langille, F. G. Plummer, Arthur Dodwell, T. F. Rixon, J. B. Leiberg

Gaines folio, Pennsylvania-New York

No abstract available.
Authors
Myron L. Fuller, William C. Alden