Publications
Publications from the staff of the Geology, Minerals, Energy, and Geophysics Science Center
Filter Total Items: 2386
Geologic map of the Fifteenmile Valley 7.5' quadrangle, San Bernardino County, California
Open-File Report OF 01-132 contains a digital geologic map database of the Fifteenmile Valley 7.5’ quadrangle, San Bernardino County, California that includes:
1. ARC/INFO (Environmental Systems Research Institute, http://www.esri.com) version 7.2.1 coverages of the various elements of the geologic map.
2. A PostScript file to plot the geologic map on a topographic base, and containing a Correla
Authors
F. K. Miller, J. C. Matti
Principal facts for gravity data along the Hayward fault and vicinity, San Francisco Bay area, northern California
The U.S. Geological Survey (USGS) established over 940 gravity stations along the Hayward fault and vicinity. The Hayward fault, regarded as one of the most hazardous faults in northern California (Working Group on California Earthquake Probabilities, 1999), extends for about 90 km from Fremont in the southeast to San Pablo Bay in the northwest. The Hayward fault is predominantly a right-lateral s
Authors
David A. Ponce
Assessment of the sand and gravel resources of the Lower Boise River Valley area, Idaho: Part one: Geological framework of the sand and gravel deposits
The USGS has undertaken a first order evaluation of sand & gravel resources in the Lower Boise River Valley in response to rapid urban expansion in the Boise-Nampa-Caldwell corridor in southwest Idaho. The study is intended to provide land-use planners and managers, particularly in the Bureau of Land Management, with a foundation of knowledge that will allow them to anticipate and plan for demand
Authors
James D. Bliss, Phillip R. Moyle
Digital geologic map of the Fawnskin 7.5' quadrangle, San Bernardino County, California
Version 1.1 of this Open-File Report contains a digital geologic map and map database of the Fawnskin 7.5' quadrangle, San Bernardino County, California, that includes:
1. ARC/INFO (Environmental Systems Research Institute) version 7.2.1 double-precision coverages of the various elements of the geologic map
2. A PostScript (.ps) file to plot the geologic map on a topographic base, containing a Co
Authors
F. K. Miller, J. C. Matti, H.J. Brown, R. E. Powell, P. M. Cossette, Gregory Morton
Digital data for construction material sources reported by the Arizona Department of Transportation in 1977 for Maricopa County, Arizona
Material inventories for prospective sources of material for use in building roads and associated structures were prepared by Arizona for several counties including Maricopa County. The inventories provide information about pit locations, materials classification and type, and measures of some characteristics used to determine suitability for aggregate.
The digital data given in this release was
Authors
Douglas M. Hirschberg, G. Stephen Pitts, Henry L. Melcher, James D. Bliss
Reconnaissance geologic map of the Dixonville 7.5' quadrangle, Oregon
The Dixonville 7.5 minute quadrangle is situated near the edge of two major geologic and tectonic provinces the northernmost Klamath Mountains and the southeastern part of the Oregon Coast Ranges (Figure 1). Rocks of the Klamath Mountains province that lie within the study area include ultramafic, mafic, intermediate and siliceous igneous types (Diller, 1898, Ramp, 1972, Ryberg, 1984). Similar roc
Authors
Angela S. Jayko, Ray E. Wells, R. W. Givler, J.S. Fenton, M. Sinor
Geochemistry of selected mercury mine-tailings in the Parkfield Mercury District, California
The Parkfield mercury district is located in the southern part of the California Coast Range mercury mineral belt and contains three silica-carbonate-type mercury deposits that have had significant mercury production. Mercury was first produced in the district in 1873, but the main period of production occurred from 1915-1922. Total production from the district is about 5,000 flasks of mercury (a
Authors
James J. Rytuba, Boris B. Kotlyar, Gregg Wilkerson, Jerry Olson
Relationship of faults in basin sediments to the gravity and magnetic expression of their underlying fault systems
Gravity and magnetic surveys were performed along the western flanks of the Santa Rita Mountain range located in southeastern Arizona to develop an understanding of the relationship between surface fault scarps within the basin fill sediments and theirgeophysical response of the faults at depth within the bedrock. Data were acquired for three profiles, one of them along the northern terrace of Mon
Authors
Christopher A. Baldyga
Geologic map of the Tucson and Nogales quadrangles (Arizona, scale 1:250,000): A digital database
The geologic map of the Tucson-Nogales 1:250,000 scale quadrangle (Peterson and others, 1990) was digitized by U.S. Geological Survey staff and University of Arizona contractors at the Southwest Field Office, Tucson, Arizona, in 2000 for input into a geographic information system (GIS). The database was created for use as a basemap in a decision support system designed by the National Industrial M
Authors
J.A. Peterson, J. R. Berquist, S. J. Reynolds, S. S. Page-Nedell, Gustav P. Oland, Douglas M. Hirschberg
Apatite fission-track evidence of widespread Eocene heating and exhumation in the Yukon-Tanana Upland, interior Alaska
We present an apatite fission-track (AFT) study of five plutonic rocks and seven metamorphic rocks across 310 km of the YukonTanana Upland in east-central Alaska. Samples yielding ~40 Ma AFT ages and mean confined track lengths > 14 µm with low standard deviations cooled rapidly from >120°C to <50°C during a 35 Ma period, beginning at about 40 Ma. Data from samples yielding AFT ages >40 Ma sugge
Authors
Cynthia Dusel-Bacon, J.M. Murphy
Significance of geologic and biostratigraphic relations between the overlap assemblage and Havallah sequence, southern Shoshone Range, Nevada
No abstract available.
Authors
Thomas E. Moore, B. L. Murchey, A. G. Harris
The demise of the San Bruno Fault
No abstract available.
Authors
Manuel G. Bonilla, R.C. Jachens, A. S. Jayko, C. M. Wentworth, Arthur F. McGarr