Thermal-infrared spectra and chemical analyses of twenty-six igneous rock samples
R.K. Vincent, L. C. Rowan, R.E. Gillespie, C. Knapp
1975, Remote Sensing of Environment (4) 199-209
Emittance spectra in the 7.5 μm to 14 μm wavelength region and chemical compositions of 26 igneous rocks are reported. Experimental measurements on the rocks were made under simulated daytime field conditions. Some surface silicate contaminants, such as clayey silt, significantly...
Garnet peridotite xenoliths in a Montana, U.S.A., kimberlite
Hearn B. Carter Jr., F.R. Boyd
1975, Physics and Chemistry of the Earth (9) 247-255
Within a swarm of late middle Eocene subsilicic-alkalic diatremes, one diatreme 270 by 370 m and an associated dike contain common xenoliths of granulite and rare xenoliths of spinel peridotite and garnet peridotite. Six garnet lherzolite xenoliths have been found and these...
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...
Contour map of the bedrock surface, New Britain Quadrangle, Connecticut
E. H. Handman
1975, Miscellaneous Field Studies Map 523-C
Contour map of the bedrock surface, Bristol Quadrangle, Connecticut
E. H. Handman, D.B. Meade
1975, Miscellaneous Field Studies Map 665-A
Map showing depth to bedrock, Mount Carmel Quadrangle, Connecticut
E. H. Handman, M. H. Ginsberg
1975, Miscellaneous Field Studies Map 540-B
Contour map of the bedrock surface, Collinsville Quadrangle, Connecticut
E. H. Handman
1975, Miscellaneous Field Studies Map 654-A
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...
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
Preliminary geologic map of the Goodnews A-3 quadrangle and parts of the A-2 and B-2 quadrangles, Alaska
J. M. Hoare, W. L. Coonrad, R. L. Detterman, D. L. Jones
1975, Open-File Report 75-308
No abstract available....
Borehole evaluation of the Teledyne Geotech 36000 seismometer system at Albuquerque, New Mexico, February-June 1974
L. Gary Holcomb
1975, Open-File Report 75-373
Streamflow Characteristics of Klawitter Creek Basin near Westfield, Wisconsin
B. K. Holmstrom
1975, Open-File Report 75-527
This report presents low-flow characteristics and mean annual discharge for a site on Klawitter Creek, where an application for diversion of streamflow has been made. This information will be used by the Wisconsin Department of Natural Resources to determine the availability of irrigation water from the stream while maintaining sufficient...
Geology of the Jabel Ishmas Quadrangle, Kingdom of Saudi Arabia
Louis Gonzales, Vincent J. Flanigan
1975, Open-File Report 75-181
The Jabal Ishmas quadrangle (20/43A) is about 100 km northeast of Qal'at Bishah in the southern part of the Arabian Shield. Most of the terrane in the quadrangle slopes gently westward across broad expanses of pediment, from prominent mountainous north-south ridges in the east to the alluvial and eolian sand-covered...
Audio-magnetotelluric methods in reconnaissance geothermal exploration
Donald B. Hoover, Carl L. Long
1975, Open-File Report 75-362
About three years ago, at the initiation of a major effort by the U.S. Geological Survey into studies of geothermal systems, a decision was made to evaluate the audio-magnetotelluric, AMT, technique for this application. At that time we had had no real experience with the method nor any equipment. Some...
1974 handbook for U.S.G.S. Central California Microearthquake Network
Travis Houck, Jenny Guerrero, Anne Miller, W.H.K. Lee
1975, Open-File Report 75-397
Possible further evidence for 3.8 b.y.-old rocks in the Minnesota River Valley of southwestern Minnesota
Samuel S. Goldich, Bruce R. Doe, Maryse Helen Delevaux
1975, Open-File Report 75-65
Preliminary report on the distribution of copper and platinum group metals in mafic igneous rocks of the Sierra Madre, Wyoming
Robert Stroud Houston, J. Eric Schuster, Ballard E. Ebbett
1975, Open-File Report 75-85
Gas chromatographic method for analysis of TNT and RDX explosives contaminating water and sail-core material
D.F. Goerlitz, LeRoy M. Law
1975, Open-File Report 75-182
A gas chromatographic method for the analysis of both water and soil-core material for TNT and RDX is presented. The explosives may be determined to 0.01 microgram per litre in 1-litre water samples and 0.2 micrograms per kilogram in 50 grams of soil. Provision is made for removal of environmental...
Keweenawan geology of the North Ironwood, Ironwood, and Little Girl Point quadrangles, Gogebic County, Michigan
Harold Arthur Hubbard
1975, Open-File Report 75-152
Chemical analyses and C.I.P.W. norms of nineteen volcanic rocks of the Ironwood area, Michigan
Howard Arthur Hubbard
1975, Open-File Report 75-145
