Ore deposits of the Gilman District, Eagle County, Colorado
T. S. Lovering, Ogden Tweto, T.G. Lovering
1978, Professional Paper 1017
The Gilman mining district, known also in the past as the Red Cliff district, is in the mountains of southeastern Eagle County, west-central Colorado. The district is the leading source of zinc in Colorado and one of the major base-metal mining districts in the State. As valued at the time...
Pennsylvanian (Upper Carboniferous) system of Wyoming
Edwin K. Maughan
1978, Open-File Report 78-377
Pennsylvanian rocks in Wyoming comprise two stratigraphic sequences bounded by regional unconformities. Red mudstone and limestone characterize the strata in the lower sequence, and sandstone and dolomite characterize the strata in the upper sequence. Initial deposits of the lower sequence are-red mudstone probably of no older age than about middle...
Map showing distribution, composition, and age of Late Cenozoic volcanic centers in Arizona and New Mexico
R. G. Luedke, R. L. Smith
1978, IMAP 1091-A
No abstract available....
Flood-plain delineation for Occoquan River, Wolf Run, Sandy Run, Elk Horn Run, Giles Run, Kanes Creek, Racoon Creek, and Thompson Creek, Fairfax County, Virginia
Pat LeRoy Soule
1978, Open-File Report 79-215
Water-surface profiles of the 25-year and 100-year floods and maps on which the 25-, 50-, and 100-year flood boundaries are delineated for streams in southwestern Fairfax County tributary to the Occoquan River, that part of the Occoquan River within Fairfax County and those streams on Mason Neck tributary to the...
Effects of urban development on the flood-flow characteristics of the Walnut Creek Basin, Des Moines Metropolitan area, Iowa
Oscar G. Lara
1978, Water-Resources Investigations Report 78-11
This report deals with the probable impact of urban development on the magnitude and frequency of flooding in the lower reach of the Walnut creek Basin.Stream-modeling techniques, which include complete definition of unit hydroqraphs and precipitation loss-rate criteria, were utilized to evaluate the effects of urban development as measured by...
A summary of niobium and rare earth localities from Ha'il and other areas in western Saudi Arabia: a preliminary study
John J. Matzko, Mohammed Ibne Naqvi
1978, Open-File Report 78-773
Investigations in 1965 located veins containing radioactive material in the Halaban Group on the east side of a granite pluton at Jabal Aja near Ha'il. Later study extended the known area of radioactivity to a total length of about 30 km. Mineralogic studies indicated that the samples were low in...
Recent and projected changes in Dead Sea level and effects on mineral production from the sea
Stanley P. Sauer
1978, Open-File Report 78-176
Hydrologic data for the Dead Sea area were reviewed to assess the probable magnitude and rate of change of the water level of the Dead Sea. Historical average annual Dead Sea levels range from a minimum of 399.4 meters below sea level in about 1818 to a maximum of 388.6...
Documentation for alinement arrays, Motagua fault, Guatemala
R.C. Bucknam
1978, Open-File Report 78-880
The following brief report documents the locations and surveying data for four alinement arrays (fig. 1, p.-7-19) across the Motagua fault, Guatemala, which were installed to measure afterslip occurring along the fault. The arrays represent new monuments installed in areas where displacements had been measured as early as four days...
Chemical analyses of surface water in Illinois, 1958–74—Volume III, Ohio River tributaries and Mississippi River tributaries south of the Illinois River basin
R. W. Healy, L.G. Toler
1978, Water-Resources Investigations Report 78-24
Samples of surface water were collected and analyzed by the Illinois Environmental Protection Agency and its predecessor, the Stream Pollution Control Bureau of the Illinois Department of Public Health. The results for the period 1958 to 1974 are presented in tabular form and the history of sampling and analytical methods...
Hydrologic data for Mountain Creek, Trinity River basin, Texas, 1976
H.D. Buckner
1978, Open-File Report 77-800
The total drainage area of Mountain Creek, Texas, is 304 sq mi. The stream-gaging stations on Mountain Creek near Cedar Hill and Walnut Creek near Mansfield provide hydrologic data to define runoff characteristics from small drainage basins. They also serve as index stations for inflow into the reservoir and provide...
An instrument system for long-term sediment transport studies on the continental shelf
Bradford Butman, David W. Folger
1978, Open-File Report 78-1019
A bottom-mounted instrument system has been designed and built to monitor processes of bottom-sediment movement on the Continental Shelf. The system measures bottom current speed and direction, pressure, temperature, and light transmission, and photographs the bottom. The instrument operates in a burst sample mode. The system can be deployed for...
Hydrologic evaluation of part of central Volusia County, Florida
P. W. Bush
1978, Water-Resources Investigations Report 78-89
Municipal wells close to the Atlantic Coast cannot be expected to supply the steadily increasing population of Volusia County, Florida, indefinitely without causing saltwater intrusion problems. Therefore, new wells will be drilled away from the coast. The source of water for the planned artesian aquifer well field will be leakage...
Geophysical logs of 20 holes drilled in 1977 in the Yampa coal field, Hamilton, Horse Gulch, and Pagoda quadrangles, Moffat County, Colorado
R. F. Meyer
1978, Open-File Report 78-366
Gravity and aeromagnetic anomalies in the Rexburg area of eastern Idaho
Don R. Mabey
1978, Open-File Report 78-382
Gold, base-metal, and related deposits of North Carolina
Gwendolyn Werth Luttrell
1978, Open-File Report 78-152
Gold, silver, copper, lead, zinc, pyrite, tin, cobalt, molybdenum, tungsten, barite, and rare-earths have been mined in North Carolina. Gold, with by-product silver, occurs in veins and mineralized shear zones in metamorphic rocks of the Piedmont province and in placers derived from these deposits. Copper occurs with complex sulfide ores...
Effects of grazing on runoff and sediment yield from desert rangeland at Badger Wash in western Colorado, 1953-73
Gregg C. Lusby
1978, Open-File Report 78-165
Four different systems of livestock management were compared hydrologically during a 20-year study (November 1953-November 1973) in western Colorado. These systems were grazing by cattle and sheep from November 15 to May 15 each year, complete elimination of grazing, grazing by sheep from November 15 to February 15 each year,...
Effects of converting sagebrush cover to grass on the hydrology of small watersheds at Boco Mountain, Colorado
Gregg C. Lusby
1978, Open-File Report 78-289
Changes in runoff and sediment yield caused by changing sagebrush cover to grass cover were studied at four small watersheds in western Colorado during a 9-year period. Measurements of runoff and sediment yield from four watersheds were made for 3 years, at which time two watersheds were plowed and seeded...
Supplementary hydraulic analysis of proposed bridge site on Mohawk River, Whitesboro, New York
Richard Lumia
1978, Open-File Report 78-348
As a supplement to a 1975 report, titled "Floodflow Characteristics at Proposed Bridge Site on Mohawk River, Whitesboro, New York," by Bernard Dunn (U.S. Geological. Survey open-file report), in which the hydraulic effects of two alternative highway plans during a large-magnitude flood were evaluated, a hydraulic analysis was made for...
Floodflow analysis of Ninemile Creek, Onondaga County, New York
Richard Lumia, Bernard Dunn
1978, Open-File Report 78-85
A flood-stage and discharge analysis was made for a 3.61 mile reach of Ninemile Creek between Amboy and Camillus. Water-surface profiles were developed for 50-year, 100-year, and September 26, 1975 flood discharges at Camillus for four different channel conditions: (1) with four culverts at Camillus bypass and a bridge at...
Mahd adh Dhahab: Precambrian epithermal gold deposit in Saudi Arabia
Robert W. Luce, James R. O’Neil, Robert O. Rye
1978, Open-File Report 78-388
No abstract available....
Spectral reflectance measurements of plants in the East Tintic Mountains, Utah
Nancy Milton
1978, Open-File Report 78-448
No abstract available....
Water resources of the central Powder River area of southeastern Montana
W. R. Miller
1978, Open-File Report 78-237
Water for domestic, stock, and public use is available from the Fox Hills-lower Hell Creek aquifer of Late Cretaceous age. Water for domestic and stock use is available from the upper part of the Hell Creek Formation of Late Cretaceous age and the lower part of the Fort Union Formation...
Anomalous occurrence of uranium in alpine peats, Summit County, Colorado, and results of a simple sample fractionation procedure
Joel S. Leventhal, Joan K. Jennings, Alan J. Lemke
1978, Open-File Report 78-235
Samples from Summit County, Colo., were fractionated for analyses of organic content and uranium. The uranium is related to organic content but not to type of organic matter. In one area uranium values are around 100 ppm in bulk samples and as much as 200 ppm in certain separated fractions...
Water-quality investigation near the Chico and Hunters geothermal lease-application areas, Park and Sweet Grass counties, Montana
Robert B. Leonard, Ronald R. Shields, Norman A. Midtlyng
1978, Open-File Report 78-199
Water quality in and adjacent to geothermal lease-application areas near Chico and Hunters Hot Springs was investigated during two surveys in October 1976 and April 1977. The resulting data were needed to evaluate the effects of proposed geothermal exploration and development on the Yellowstone River and its tributaries.Waters from the...
Selected data from thermal-spring areas, southwestern Montana
Robert B. Leonard, Tordis M. Brosten, Norman A. Midtlyng
1978, Open-File Report 78-438
During 1975-77 the Montana district of the U.S. Geological Survey collected and assembled data describing the flow, temperature, and chemical characteristics of thermal and related waters. The work was part of an assessment of the geothermal resources of southwestern Montana, excluding Yellowstone Park. The purpose of this report is to...
