Geology of the Marysville mining district, Montana: A study of igneous intrusion and contact metamorphism
Joseph Barrell
1907, Professional Paper 57
The Marysville mining district had been for many years previous to 1899 one of the noted gold-producing centers of Montana. The mines are situated around the margins of in irregular batholith of quartz diorite, whose surface exposure is from half a mile to 1 1/2 miles broad and 2 1/2...
The geography and geology of Alaska; a summary of existing knowledge, with a section on climate, and a topographic map and description thereof
A. H. Brooks, Cleveland Abbe Jr., R.U. Goode
1906, Professional Paper 45
Alaska, the largest outlying possession of the United States, is that great land mass forming the northwestern extremity of the North American continent, whose western point is within 60 miles of the Asiatic coast (PI. II). About one-quarter of this area lies within the Arctic Circle, and from the standpoint...
Contributions to economic geology, 1905: Copper
W. H. Weed, W. H. Emmons, A. J. Collier, W. C. Phalen
1906, Bulletin 285-B
Geology of the Bighorn Mountains
N. H. Darton
1906, Professional Paper 51
This report is the result of studies made in the field during the seasons of 1901, 1902, 1903, 1904, and 1905. It relates to an area of about 9,000 square miles, situated mainly in the north-central portion of Wyoming and extending northward into Montana. Its location and general surroundings are...
The copper deposits of the Clifton-Morenci district, Arizona
Waldemar Lindgren
1905, Professional Paper 43
The oldest rocks of the Clifton quadrangle are pre-Cambrian granite and quartzitic schists, separated by an important unconformity from the covering Paleozoic strata. The latter comprise a total thickness of 1,500 feet. At the base lie 200 feet of probably Cambrian quartzitic sandstone, succeeded by 200 to 400 feet of...
Geology of the central Copper River region, Alaska
Walter C. Mendenhall
1905, Professional Paper 41
It is an interesting evidence of the prompt responsiveness of our governmental organization to popular needs that the year 1898, which saw the first rush of argonauts to Alaska as a result of the discovery of the Klondike in 1986, saw also several well-equipped Federal parties at work in the...
The copper deposits of Missouri
Harry Foster Bain, Edward Oscar Ulrich
1905, Bulletin 267
The chemistry of ore deposition - Precipitation of copper by natural silicates
E.C. Sullivan
1905, Journal of the American Chemical Society (27) 976-979
[No abstract available]...
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...
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...
Observations on the junction between the Eastern sandstone and the Keweenaw series on Keweenaw Point, Lake Superior
Roland Duer Irving, Thomas C. Chamberlin
1885, Bulletin 23
Although the copper-bearing rocks of Lake Superior and the adjoining formations have attracted the attention of geologists for fifty years past, there are yet remaining unsolved very many problems with regard to them. We have ourselves, indeed, written at some length with regard to these rocks, and one of us...
Copper smelting
Henry Marion Howe
1885, Bulletin 26
The copper-bearing rocks of lake Superior
Roland Duer Irving
1883, Monograph 5
