The Triassic cephalopod genera of America
Alpheus Hyatt, J.P. Smith
1905, Professional Paper 40
The marine Triassic section of .America is unusually complete, and its thickness compares favorably with that of any other region. All three subdivisions-Lower, Middle, and Upper Triassic--are represented by calcareous deposits, aggregating approximately 4,000 feet in thickness. Of this amount, about 800 feet belong to the Lower Triassic, about 1,000...
Forest conditions in the Gila River Forest Reserve, New Mexico
T. F. Rixon
1905, Professional Paper 39
The Gila River Forest Reserve was established by proclamation of President McKinley on March 2, 1899. The following is a statement of the boundaries as laid down in the proclamation: "Beginning at a point on the boundary line between New Mexico and Arizona, where it is intersected by the north...
Economic geology of the Bingham mining district, Utah
J. M. Boutwell, Arthur Keith, S. F. Emmons
1905, Professional Paper 38
The field work of which this report represents the final results was first undertaken in the summer of the year 1900. This district had long been selected by the writer as worthy of special economic investigation, as well on account of the importance of its products as because of its...
A geological reconnaissance across the Bitterroot Range and Clearwater Mountains in Montana and Idaho
Waldemar Lindgren
1904, Professional Paper 27
This report describes, in a preliminary way, a belt of country extending westward from the Bitterroot Valley, across the dividing range and the rugged mountains of the Clearwater system, down to the fertile plateaus which border the canyon of Snake River. It thus presents a reconnaissance section from western Montana...
Zinc and lead deposits of northern Arkansas
George I. Adams, A. H. Purdue, E. F. Burchard, E. O. Ulrich
1904, Professional Paper 24
The field work on which this report is based was carried on during the months of July, August, and September, 1902. The writer was assisted by Prof. A. H. Purdue, of the University of Arkansas, and Mr. Ernest F. Burchard. The larger portion of the time was used in the...
The superior analyses of igneous rocks from Roth's Tabellen, 1869 to 1884, arranged according to the quantitative system of classification
H.S. Washington
1904, Professional Paper 28
In Professional Paper No. 14 there were collected the chemical analyses of igneous rocks published from 1884 to 1900, inclusive, arranged according to the quantitative system of classification recently proposed by Cross, Iddings, Pirsson, and Washington. In order to supplement this work it has appeared advisable to select the more...
The Delavan lobe of the Lake Michigan glacier of the Wisconsin stage of glaciation and associated phenomena
W. C. Alden
1904, Professional Paper 34
The purpose of this paper is to throw, if possible, some further light on the relations which existed during the later stages of the Glacial epoch between the glaciers of southeastern Wisconsin, which have been so ably discussed by Dr. T.C. Chamberlin and other writers in various publications, and the...
The geology and ore deposits of the Bisbee quadrangle, Arizona
Frederick Leslie Ransome
1904, Professional Paper 21
The Bisbee quadrangle lies in Cochise County, in the southeastern part of Arizona, within what has been called in a previous paper the mountain region of the Territory. It is inclosed between meridians 109 ° 45' and 110 ° 00' and parallels 31° 30' and 31 ° 20', the latter...
Forest conditions in the San Francisco Mountains Forest Reserve, Arizona
J. B. Leiberg, T. F. Rixon, Arthur Dodwell, F. G. Plummer
1904, Professional Paper 22
On April 12, 1902, President Roosevelt issued a proclamation "for the purpose of consolidating into one reserve the lands heretofore embraced in the San Francisco Mountains Forest Reserves and of including therein the other adjacent lands within Francisco Mountains Forest Reserve, and is described by metes and bound as follows: ''Beginning...
The copper deposits of the Encampment District, Wyoming
A.C. Spencer
1904, Professional Paper 25
During the last few years prospecting in the Medicine Bow and Park ranges in northern Colorado and southern Wyoming has proved that copper-bearing minerals occur frequently and are very generally distributed over a wide region in this portion of the Rocky Mountains. This has gradually become known through the discovery...
Forest conditions in the Little Belt Mountains Forest Reserve, Montana, and the Little Belt Mountains quadrangle
J. B. Leiberg
1904, Professional Paper 30
No abstract available....
Economic resources of the northern Black Hills
J.D. Irving, S. F. Emmons, T.A. Jaggar Jr.
1904, Professional Paper 26
The mining district of the Black Hills comprised within the Spearfish and Sturgis quadrangles was surveyed geologically in the summers of 1898 and 1899 under the direction of Mr. S. F. Emmons. The following pages present a brief summary of the geologic features, more especially with reference to ore-bearing formations....
Preliminary report on the geology of the Arbuckle and Wichita mountains in Indian Territory and Oklahoma
J. A. Taff, H. F. Bain
1904, Professional Paper 31
The Arbuckle Mountains consist of a moderately elevated table -land or plateau in the east-central part of the Chickasaw Nation, Indian Territory. The plateau ranges in elevation from 1,300 feet above sea, in its contracted western part, to 750 feet, at the east end, where it coalesces with the bordering...
A reconnaissance in northern Alaska across the Rocky Mountains, along Koyukuk, John, Anaktuvuk, and Colville Rivers, and the Arctic coast to Cape Lisburne, in 1901, with notes
F. C. Schrader, W. J. Peters
1904, Professional Paper 20
Since 1898 the United States Geological Survey has been carrying on systematic topographic and geologic surveys in Alaska under an appropriation made for the investigation of the mineral resources of the Territory. This work has included not only areal surveys of regions already being developed by the miner and prospector,...
Forest conditions in the Absaroka division of the Yellowstone Forest Reserve, Montana and the Livingston and Big Timber quadrangles
J. B. Leiberg
1904, Professional Paper 29
The tract of land here designated the Absaroka division of the Yellowstone Forest Reserve was originally the Absaroka Forest Reserve. By proclamation of January 29, 1903, this reserve was merged with the Teton and the Yellowstone forest reserves, the whole taking the name of the Yellowstone Forest Reserve. The western,...
Forest conditions in the Lincoln Forest Reserve, New Mexico
F. G. Plummer, M.G. Gowsell
1904, Professional Paper 33
Forest conditions in the Black Mesa Forest Reserve, Arizona
F. G. Plummer, T. F. Rixon, Arthur Dodwell
1904, Professional Paper 23
The Black Mesa Forest Reserve, in Arizona, was created by proclamation of President McKinley dated August 17, 1898. The following are its boundaries; "Beginning at a point on the boundary line between Arizona and New Mexico where it is intersected by the north line of township seven (7) north, range...
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...
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...
Drainage modifications in southeastern Ohio and adjacent parts of West Virginia and Kentucky
W. G. Tight
1903, Professional Paper 13
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...
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...
Forest conditions in the Cascade Range Forest Reserve, Oregon
H.D. Langille, F. G. Plummer, Arthur Dodwell, T. F. Rixon, J. B. Leiberg
1903, Professional Paper 9
Chemical analyses of igneous rocks published from 1884 to 1900, with a critical discussion of the character and use of analyses
H.S. Washington
1903, Professional Paper 14
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...
The mineral resources of the Mount Wrangell district, Alaska
W. C. Mendenhall, F. C. Schrader
1903, Professional Paper 15
The Tenth Census, taken in 1880, gives the number of white inhabitants of the Territory of Alaska as 430. In the decade from 1880 to 1890 this number had increased to 4,298, and in the following decade, that between 1890 and 1900, a further increase to 30,493 is recorded. The...
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...
