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Oxidized Zinc Deposits of the United States: Part 3. Colorado
From abstract: Deposits of oxidized zinc ore are widely distributed in the western part of Colorado in the Rocky Mountains west of the Front Range and in the uplifted plateaus that border the main area of the Colorado Plateau. The principal production and reserves are restricted to several mining districts--Leadville. Aspen, Monarch, Spring Creek. Horseshoe, Tomichi, Tincup, and Rico--in all of which limestone and dolomites of Paleozoic age are the main host rocks. One deposit, that of the Sedalia mine near Salida has produced commercial quantities of oxidized zinc-copper ore from noncarbonate host rocks, but other known deposits in noncarbonate rocks are mostly low grade.
Date:
1964
Creator:
Heyl, Allen V.
Object Type:
Report
System:
The UNT Digital Library
Oxidized Zinc Deposits of the United States: Part 1. General Geology
From introduction: This report is intended as a descriptive summary. The fieldwork on which it is based was completed in the central Western States in 1952-56, and additional studies were made in the Central and Eastern States before and after the western studies. Research and compilation were completed in 1956-59. Other reports will describe in detail the geology and origin of the oxidized zinc deposits in Colorado, Utah, Nevada, and California. (See also Heyl and Bozion, 1960.)
Date:
1962
Creator:
Heyl, Allen V. & Bozion, C. N.
Object Type:
Report
System:
The UNT Digital Library
Zinc-Lead-Copper Resources and General Geology of the Upper Mississippi Valley District
From introduction: This report discusses the general geology of the Upper Mississippi Valley zinc-lead district, the distribution of ore deposits, and some relations of the ore deposits to the major geologic features.
Date:
1955
Creator:
Heyl, Allen V.; Lyons, Erwin J.; Agnew, Allen F. & Behre, Charles H., Jr.
Object Type:
Report
System:
The UNT Digital Library
Geologic Reconnaissance Along the Alaska Highway, Delta River to Tok Junction, Alaska
The following report studies results from the bedrock and surficial geologic reconnaissance of the middle section of the Tanana lowland and adjacent parts of the Alaska Range and the Yukon-Tanana upland.
Date:
1965
Creator:
Holmes, G. William
Object Type:
Report
System:
The UNT Digital Library
Geology of the Crazy Woman Creek Area Johnson County Wyoming
A report about the geology of the the Crazy Woman Creek area in Wyoming. Rocks of every system except the Silurian and Devonian are present in the area.
Date:
1955
Creator:
Hose, Richard K.
Object Type:
Report
System:
The UNT Digital Library
Geology of the Crazy Woman Creek area, Johnson County, Wyoming
This report follows the geological study of the Crazy Woman Creek area in Johnson County, Wyoming where oil, gas, and coal investigations were made.
Date:
1955
Creator:
Hose, Richard Kenneth
Object Type:
Report
System:
The UNT Digital Library
Geology of the Murray Area, Shoshone County, Idaho
Abstract: The Murray area includes almost the whole drainage basins of Prichard, Eagle, and Beaver Creeks and is underlain by the pre-Cambrian Belt series which is subdivided, from oldest to youngest, as follows: Prichard formation (upper and lower parts), Burke formation, Revett quartzite, St. Regis formation, Wallace formation, and Striped Peak formation. The Belt series in this area is cut by many small monzonite stocks believed to be related to the Cretaceous Idaho batholith. This report describes only the lead-zinc mines. The lead-zinc production around Murray reached its peak in 1911 and 1912 when the Monarch, Edith Murray (Pontiac or Terrible Edith), Bear Top, Paragon, Black Horse, and Silver Strike mines were active. Many of these mines have produced ore intermittently since then, and the Jack Waite mine has been very active since about 1930.
Date:
1956
Creator:
Hosterman, John W.
Object Type:
Report
System:
The UNT Digital Library
Reconnaissance for Radioactive Deposits in Southeastern Alaska, 1952
From abstract: Reconnaissance for radioactive deposits in southeastern Alaska in 1952 was centered in three localities: the northern part of Prince of Wales Island and parts of adjacent islands, the Taku Harbor-Point Astley district, and the Hyder area. Significant concentrations of radioactive minerals were found only in the vicinity of Salmon Bay on the northeastern shore of Prince of Wales Island. In this area radioactive carbonate-hematite veins occur along the coast for about 8 miles. The veins are generally short, irregular, and lenticular, but a few can be traced for more than 300 feet between the low-tide line and the forest cover. The width of the veins normally ranges from less than 1 inch to 2.5 feet; several, however, are 5 to 10 feet wide.
Date:
1958
Creator:
Houston, Joseph R.; Bates, Robert Glenn; Velikanje, Robert S. & Wedow, Helmuth, Jr.
Object Type:
Report
System:
The UNT Digital Library
Chromite Deposits in Central Part Stillwater Complex, Sweet Grass County, Montana
From abstract: The chromite deposits of the central part of the Stillwater complex lie in a belt 9 miles long between the valleys of Boulder River and the West Fork of the Stillwater River in Sweet Grass County, Mont. The chromite occurs as layers near the middle part of the ultramafic zone in the lower part of the complex. The layers, originally horizontal, have been tilted so that they dip northeastwards at angles ranging from nearly horizontal to nearly vertical, and are cut by many cross faults, the largest with a horizontal offset of 3,000 feet. Investigations by the United States Geological Survey and the United States Bureau of Mines have shown that in this belt there are 5 sections ranging in length from 850 to 3,800 feet along the strike where the continuity and grade of the chromite can be reasonably inferred.
Date:
1955
Creator:
Howland, A. L.
Object Type:
Report
System:
The UNT Digital Library
Contributions to General Geology 1951-54
A report about stratigraphic studies of late Quaternary deposits in the Rocky Mountain region which reveal a widespread uncomformity separating deposits that differ lithologically. The deposits overlying the unconformity contain modern fauna that do not occur in older deposits.
Date:
1955
Creator:
Hunt, Charles B.
Object Type:
Report
System:
The UNT Digital Library
Geology and Fuel Resources of the Southern Part of the San Juan Basin, New Mexico: Part 2. The Mount Taylor Coal Field
From introduction: The present report describes the general geology and the economic resources of the [Mount Taylor Coal] field. The area adjoining this on the west was mapped by Sears; the area adjoining on the north was mapped by Dane.
Date:
1936
Creator:
Hunt, Charles B.
Object Type:
Report
System:
The UNT Digital Library
Pleistocene and Recent Deposits in the Denver Area, Colorado
This report describes the stratigraphy of Pleistocene and Recent deposits in the Denver area, Colorado that was conducted intermittently between 1948-52.
Date:
1954
Creator:
Hunt, Charles B.
Object Type:
Report
System:
The UNT Digital Library
The Foote Creek and Dutton Creek Formations, Two New Formations in the North Part of the Laramie Basin, Wyoming
A report about two new geologic formations in Wyoming. The Foote Creek Formation consists of beds of fine-grained sandstone with shale, siltstone, and coal beds. The Dutton Creek Formation consists of beds of coarse-grained locally conglomeratic sandstone.
Date:
1965
Creator:
Hyden, Harold J.; McAndrews, Harry & Tschudy, Robert H.
Object Type:
Report
System:
The UNT Digital Library
Perlite Resources of the United States
Abstract: This report abstracts the published information on geologic occurrence and distribution of perlite in the United States. Perlite is important in the growing light-weight aggregates industry. The geology and petrology of perlite are described and brief mention is made of mining, milling, processing, economic factors, and reserve figures where known. A table of analyses of the rhyolitic, latitic, and dacitic perlite, welded tuff, pitchstone, and obsidian is included mainly to show the water content. The index map shows known deposits and the geology of areas in which possible deposits may be found. The locations of processing plants are indicated to show their economic relationship to the deposits and to markets.
Date:
1956
Creator:
Jaster, Marion C.
Object Type:
Report
System:
The UNT Digital Library
Pecos National Monument, New Mexico: Its Geologic Setting
From introduction: The ruins of the pueblos and missions of Pecos lie on the east bank of Glorieta Creek near its junction with the Pecos River at the south end of the Sangre de Cristo Mountains in north-central New Mexico. Here the Pecos River and Glorieta Creek have formed a broad rolling valley in which the red adobe walls of the mission church stand as a striking monument to a historic past.
Date:
1969
Creator:
Johnson, Ross B.
Object Type:
Report
System:
The UNT Digital Library
Geology of the Mount Katmai Area, Alaska
From abstract: The Mount Katmai area is on the Alaska Peninsula and comprises the Mount Katmai quadrangle, the Cape Douglas area of the adjoining Afognak quadrangle, and parts of the Karluk and Naknek quadrangles. The area, which includes nearly all the Katmai National Monument, is one of high relief and is drained by streams of preglacial origin. At least two ice advances are indicated by the moraine configuration. Present-day glaciation is restricted to numerous alpine glaciers in the mountain areas. Fifteen recently active volcanoes roughly form a line from Mount Douglas to Martin Mountain.
Date:
1959
Creator:
Keller, A. Samuel & Reiser, Hillard N.
Object Type:
Report
System:
The UNT Digital Library
Strippable lignite Deposits, Slope and Bowman Counties, North Dakota
From abstract: Slope and Bowman Counties, N. Dak., include an area of about 2,450 square miles in the southeastern part of the Fort Union coal region of North Dakota, South Dakota, and Montana. In anticipation of a future increase in the demand for the low-rank coal of this region as a fuel for electric power plants and as a raw material for various chemical synthesizing processes, Slope and Bowman Counties were investigated for deposits of lignite that could be mined by large scale strip mining methods. All the lignite beds of economic importance in this area are in the Fort Union formation, particularly in the Tongue River member. The beds are nearly horizontal, dipping about 25 to 50 feet per mile north and northeast from the Cedar Creek anticline in the southwest corner of the area.
Date:
1955
Creator:
Kepferle, Roy Clark & Culbertson, William C.
Object Type:
Report
System:
The UNT Digital Library
Mineral Resources of the Stratified Primitive Area, Wyoming
The following report is an evaluation of mineral potential of the Stratified Primitive Area in Wyoming.
Date:
1966
Creator:
Ketner, Keith Brindley; Keefer, W. R.; Fisher, F. S.; Smith, D. L. & Raabe, R. G.
Object Type:
Report
System:
The UNT Digital Library
Radioactivity Investigations at Ear Mountain, Seward Peninsula, Alaska, 1945
From abstract: Radioactive material in apparently significant amounts was recognized in heavy-mineral concentrates from the gravels of four streams that head in Ear Mountain, Alaska, when collections of the United States Geological Survey were examined for radioactivity in the winter of 1944-45. This area, on the north side of the Seward Peninsula, attracted attention in 1901-02 when cassiterite was discovered in the streams. Subsequent attempts were made to develop copper- and tin-bearing lode deposits.
Date:
1955
Creator:
Killeen, P. L. & Ordway, Richard J.
Object Type:
Report
System:
The UNT Digital Library
Radioactive Rare-Earth Deposit at Scrub Oaks Mine, Morris County, New Jersey
From abstract: A deposit of rare-earth minerals in the Scrub Oaks iron mine, Morris County, N. J., was mapped and sampled in 1955. The rare-earth minerals are mainly in coarse-grained magnetite ore and in pegmatite adjacent to it. Discrete bodies of rare-earth-bearing magnetite ore apparently follow the plunge of the main magnetite ore body at the north end of the mine. Radioactivity of the ore containing rare earths is about 0.2 to 0.6 milliroentgens per hour.
Date:
1959
Creator:
Klemic, Harry; Heyl, Allen V., Jr.; Taylor, A. R. & Stone, Jerome
Object Type:
Report
System:
The UNT Digital Library
Bentonite Deposits of the Northern Black Hills District Wyoming, Montana, and South Dakota
From abstract: The northern Black Hills bentonite mining district includes parts of Crook County, Wyo., Carter County, Mont., and Butte County, S. Dak. Within this district, many beds of bentonite occur interspersed with sedimentary strata of Cretaceous age that have an average total thickness of about 3,000 feet and consist chiefly of marine shale, marl, and argillaceous sandstone. The bentonite beds occur in formations ranging upward from the Newcastle sandstone to the lower part of the Mitten black shale member of the Pierre shale. Tertiary (?) and Quaternary deposits of gravel, sand, and silt are present on extensive terraces, and deposits of such materials also extend along stream courses in all parts of the district.
Date:
1962
Creator:
Knechtel, Maxwell M. & Patterson, Sam H.
Object Type:
Report
System:
The UNT Digital Library
Uranium Content of Ground and Surface Waters in a Part of the Central Great Plains
A report about the uranium content of water from various rock units and geologic terrains. Rocks of uranium might indicate which underground water sources contain uranium.
Date:
1960
Creator:
Landis, E. R.
Object Type:
Report
System:
The UNT Digital Library
Uranium Content of Ground and Surface Waters in a Part of the Central Great Plains
This report follows the study of water samples from various rock units from the central Great Plains for the determination of uranium content.
Date:
1960
Creator:
Landis, Edwin R.
Object Type:
Report
System:
The UNT Digital Library
Minor Elements in Bedrock Soil, and Vegetation at an Outcrop of the Phosphoria Formation on Snowdrift Mountain Southeastern Idaho
This report follows the geochemical study of bedrock soil and vegetation at an outcrop of the Phosphoria Formation of Permian age on Snowdrift Mountain, southeastern Idaho.
Date:
1963
Creator:
Lotspeich, Frederick B. & Markward, Ellen L.
Object Type:
Report
System:
The UNT Digital Library