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184812 results.

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Page 7359, results 183951 - 183975

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Publication Extents

Not all publications have extents, not all extents are completely accurate
The Carboniferous formations and faunas of Colorado
G.H. Girty
1903, Professional Paper 16
In the following pages the geology and paleontology of the Carboniferous rocks of Colorado are discussed from the viewpoint of the stratigraphic paleontologist. This viewpoint is also that of one not personally acquainted with the field in question, except in very small measure. I made or assisted in making a...
Chemical composition of igneous rocks expressed by means of diagrams, with reference to rock classification on a quantitative chemico-mineralogical basis
J. P. Iddings
1903, Professional Paper 18
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...
Geology of the Globe copper district, Arizona
Frederick Leslie Ransome
1903, Professional Paper 12
The investigation of the Globe district was begun early in the summer of 1901, a month being devoted to preliminary reconnaissances and areal mapping of the geology. Work was subsequently resumed in October of the same year, with the efficient assistance of Dr. John D. lrving, and continued to the...
The clays of the United States east of the Mississippi River
Henrich Ries
1903, Professional Paper 11
NATURE OF CLAY. The term clay is applied to a natural substance or rock which, whenfinely ground and mixed with water, forms a pasty, moldable mass that preserves its shape when air dried, and when burned changes to a hard, rock-like substance by the coalescence of its particles, through softening under...
Contributions to the geology of Washington
G. O. Smith, Bailey Willis
1903, Professional Paper 19
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...