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Publication Extents

Not all publications have extents, not all extents are completely accurate
Distribution and abundance of molybdenum in bedrock, mineralized, vein and altered rock samples, McCarthy quadrangle, Alaska
Keith Robinson, C. M. McDougal, S.K. McDanal, Theodore Billings
1976, Miscellaneous Field Studies Map 773-J
A geochemical survey was conducted in the McCarthy quadrangle Alaska, to identify areas containing anomalous concentrations of various metallic and nonmetallic elements. This study incorporates the results of analyses for molybdenum from 825 rock samples collected in the quadrangle, and analyzed by the U.S. Geological Survey between 1961 and 1976...
Geochemical prospecting for Carlin-type gold deposits
Sherman P. Marsh
1976, Open-File Report 76-335
Disseminated, Carlin-type, gold deposits are associated with a volatile suite of elements consisting of Hg, As, Sb, W, and sometimes, but not always, Au. Geochemical exploration for this type of disseminated deposit depends upon recognizing the significance of this volatile suite and interpreting it in light of other geologic and...
FORTRAN computer program for seismic risk analysis
Robin K. McGuire
1976, Open-File Report 76-67
A program for seismic risk analysis is described which combines generality of application, efficiency and accuracy of operation, and the advantage of small storage requirements. The theoretical basis for the program is first reviewed, and the computational algorithms used to apply this theory are described. The information required for running...
A hydrologic description of Keystone Lake near Tampa, Florida
R.C. Reichenbaugh
1976, Water-Resources Investigations Report 76-124
The terrain around Keystone Lake, a 388-acre lake in northwest Hillsborough County, Florida, near the Cosme well field, is dotted with sinks that promote leakage from the surficial aquifer to the underlying Floridan aquifer. The lake, an integral part of the Brooker Creek channel, receives overland runoff from cypress swamps,...
Methodology for river-quality assessment with application to the Willamette River basin, Oregon
David A. Rickert, Walter G. Hines, Stuart W. McKenzie
1976, Circular 715-M
For nearly half a century the Willamette River in Oregon experienced severe dissolved-oxygen problems related to large loads of organically rich waste waters from industries and municipalities. Since the mid-1950 's dissolved oxygen quality has gradually improved owing to low-flow augmentation, the achievement of basinwide secondary treatment, and the use...
Flood-plain delineation for Difficult Run Basin, Fairfax County, Virginia
P.L. Soule
1976, Open-File Report 76-459
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 the Difficult Run basin are presented in this report.The techniques used in the computation of the flood profiles and delineation of flood boundaries are presented, and...
Ground water in the Harrisburg-Halsey area, southern Willamette Valley, Oregon
F. J. Frank
1976, Water Supply Paper 2040
The Harrisburg-Halsey area lies between the Cascade and Coast Ranges in the southern Willamette Valley in northwestern Oregon. The area consists of approximately 350 square miles (910 km2) and includes a part of the lower foothills of the Coast and Cascade Ranges. Volcanic and marine sedimentary units exposed in the...
Hydrologic reconnaissance of the geothermal area near Klamath Falls, Oregon
E.A. Sammel, D. L. Peterson
1976, Water-Resources Investigations Report 76-127
Geothermal phenomena observed in the vicinity of Klamath Falls include hot springs with temperatures that approach 204°F (96 o C) (the approximate boiling temperature for the altitude), steam and water wells with temperatures that exceed 212°F (100°C), and hundreds of warm-water wells with temperatures mostly ranging from 68° to 95°F...