Al-augite and Cr-diopside ultramafic xenoliths in basaltic rocks from western United States
H. G. Wilshire, J.W. Shervais
1975, Physics and Chemistry of the Earth (9) 257-272
Ultramafic xenoliths in basalts from the western United States are divided into Al-augite and Cr-diopside groups. The Al-augite group is characterized by Al, Ti-rich augites, comparatively Fe-rich olivine and orthopyroxene, and Al-rich spinel, the Cr-diopside group by Cr-rich clinopyroxene and spinel and...
Magnitude and frequency of floods in small drainage basins in North Dakota
Orlo A. Crosby
1975, Water-Resources Investigations Report 19-75
This report describes methods for estimating flood-peak discharges having 2- to 50-year recurrence intervals on North Dakota streams draining less than 100 square miles ( 259 square kilometres). For gaged sites, frequency estimates are provided directly. For ungaged sites, flood peaks are estimated from multiple-regression equations using drainage-area size and,...
A summary of selected chemical-quality conditions in 66 California streams 1950-72
George A. Irwin, Michael Lemons
1975, Report
Water from California streams has been analyzed for concentrations of selected chemical constituents since the early 1950's. This summary includes about 1,200 water years of data from 88 sampling sites on 66 streams. Results of this summary show that about 80 percent of the sites had a mean dissolved-solids concentration...
Descriptions and chemical analyses for selected wells in the Tehama-Colusa Canal Service Area, Sacramento Valley, California
Ronald P. Fogelman
1975, Report
The Tehama-Colusa Canal Service Area is in the northwestern part of the Sacramento Valley, in parts of Yolo, Colusa, Glenn, and Tehama Counties. The area includes 450 square miles (1,160 square kilometres). The boundaries are: West, the eastern slopes of the Coast Ranges; north, Elder Creek; northeast, the Sacramento River...
In-situ measurements of seismic velocities at twelve locations in the San Francisco Bay region
J. F. Gibbs, T. E. Fumal, R. D. Borcherdt
1975, Open-File Report 75-564
No abstract available....
Thermal-infrared images as a basis for structure mapping, front range and adjacent plains in Colorado
Terry W. Offield
1975, Geological Society of America Bulletin (86) 495-502
High-altitude thermal-infrared images, taken at various times of the day over the Front Range and adjacent plains in Colorado, display many linear and circular topographic features. These features are enhanced by thermal shading effects and commonly are better displayed than in photographs. Comparison with geologic maps of a control area...
Possible effects of vegetation conversion on runoff and sediment yield, Sycamore Creek watersheds, Maricopa County, Arizona; calibration period analysis
H. W. Hjalmarson
1975, Open-File Report 75-425
Water-quality data from oil and gas wells in part of the Permian Basin, southeastern New Mexico and western Texas
William L. Hiss
1975, Open-File Report 75-579
Approximately 8,000 chemical analyses of water produced from formations of several geologic ages in south eastern New Mexico and western Texas are tabulated by both geographic location and geologic formation.Empirical and mathematical relationships between (1) the dissolved solids and the measured and computed resistivity of water, the chloride-ion concentration and...
Interpretation of geologic and hydrologic data from the Ray-1 Well, City of Gallup, McKinley County, New Mexico
William L. Hiss, Jane G. Marshall
1975, Open-File Report 75-573
The Ray-1 well was to be the third production well completed in the city of Gallup Yah-ta-hey well field located about 7 miles (11 km) north of the city. The first string of casing collapsed during completion, however, and the well was abandoned before it could be tested. The lithology...
Evaluation and proposed study of potential ground-water supplies, Gallup area, New Mexico
William L. Hiss
1975, Open-File Report 75-522
The ground-water potential of 5 areas in central-western New Mexico within 85 miles (135 km) of Gallup, N. Mex. was evaluated by reviewing the published literature, inspecting aerial and space photographs, and interviewing ranchers and personnel employed by well-drilling and mineral-exploration companies by telephone. The San Andres Limestone and underlying...
Beacon Hill End Moraine, Boston; a new explanation of an important urban feature
Clifford A. Kaye
1975, Open-File Report 75-57
Catalog of earthquakes in the Imperial Valley, California, June 1973-May 1974
David P. Hill, Penelope Mowinckel, Karen M. Lahr
1975, Open-File Report 75-401
Evaluation of monitoring of radioactive solid-waste burial sites at Los Alamos, New Mexico
T. E. Kelly
1975, Open-File Report 75-406
Geological and operational summary, Continental Offshore Stratigraphic Test (COST) No.1, South Padre Island East Addition offshore south Texas
A. S. Khan, L.A. Latta, R.L. Oakes, D.M. Pert, W.E. Sweet, N. Smith, E.J. Wall
1975, Open-File Report 75-174
Geological and operational summary, Continental Offshore Stratigraphic Test (COST) No. 2, Mustang Island, offshore south Texas
A. S. Khan, L.A. Latta, R.L. Oakes, D.M. Pert, W.E. Sweet, N. Smith, E.J. Wall
1975, Open-File Report 75-259
Titanium deposits in alkalic igneous rocks
Norman Herz
1975, Open-File Report 75-35
Many types of alkalic rocks are enriched in Ti02 relative to the average for the crust. Silicate minerals in these rocks may have high Ti02 contents, but the oxides ilmenite, rutile, brookite, and perovskite are also characteristic primary phases. These tend to be higher in niobium than are the same...
Analog-model analysis of hydrological effects of sewage in Southeast Nassau and Southwest Suffolk counties, Long Island, New York
Grant E. Kimmel, Arlen W. Harbaugh
1975, Open-File Report 75-535
Ancient mines in Al Kushaymiyah region, Kingdom of Saudi Arabia
A. M. Helaby, F. C. Dodge
1975, Open-File Report 75-58
Geology and geochronology of the Clear Lake Volcanics, California
B.C. Hearn, Julie M. Donnelly, Fraser E. Goff
1975, Open-File Report 75-296
Antimony deposits of Quetta-Pishin District, Quetta Division, Pakistan
F.L. Klinger, John J. Matzko, S.H. Abbas
1975, Open-File Report 75-161
Vein-type deposits of antimony ore, consisting of stibnite and quartz, are found in the hanging wall of faults cutting slate of probable Miocene age 15 miles northeast of Qila Abdullah in the Quetta-Pishin District. The ore is associated with zones of oxidized slate. Although the known deposits are small, the...
Barite deposits near Khuzdar, Kalat Division, Pakistan
Frederick L. Klinger, Mohammad Iftikhar Ahmad
1975, Open-File Report 75-275
Important deposits of barite are about 6 miles southwest of Khuzdar in a folded belt of Jurassic limestone and shale. The deposits are lenses distributed along a narrow stratigraphic zone more than 4,600 feet long. Wallrocks have been altered by silicification, leaching, and by the introduction and oxidation of iron....
Surface-water availability, Tuscaloosa County, Alabama
Alfred L. Knight, Marvin E. Davis
1975, Open-File Report 75-458
The average annual runoff, about 1,270 mgd (million gallons per day), originating in Tuscaloosa County is equivalent to 20 inches or 0.95 mgd per square mile. The Black Warrior and Sipsey Rivers, the largest streams in the county, have average flows of 5,230 mgd and 580 mgd, respectively, where they...
Water availability of Fayette County, Alabama
Alfred L. Knight
1975, Open-File Report 75-449
Use of USGS earth science products by city planning agencies in the San Francisco Bay region, California
W. J. Kockelman
1975, Open-File Report 75-276
An inventory of the use of USGS products in selected planning studies, plans, plan implementation devices, and other planning-related activities was completed for the ninety-one cities in the nine-county San Francisco Bay region. This inventory was designed to determine and document the use of the 85 earth science products prepared...
Some limnological aspects of 20 selected lakes in Eagan and Apple Valley, Minnesota
M.R. Have
1975, Open-File Report 75-528
Selected physical, chemical, and biological parameters were determined to assess the quality of 20 lakes in the cities of Eagan and Apple Valley, Minn. All the lakes are eutrophic except Holland and Fish Lakes, which are mesotrophic. Some lakes (including Fish Lake) have storm sewer inlets but are not discernibly...
