Publications
Here you will find publications, reports and articles produced by geology, energy, and mineral scientists. For a comprehensive listing of all USGS publications, click the button below.
Filter Total Items: 1428
Geologic datasets for weights-of-evidence analysis in northeast Washington: 2. Mineral databases Geologic datasets for weights-of-evidence analysis in northeast Washington: 2. Mineral databases
Digital mineral databases are necessary to carry out weights-of-evidence modeling of mineral resources for epithermal gold and carbonate-hosted lead-zinc deposits in northeast Washington. This report describes spreadsheet tables consisting of: 1) training sites for epithermal gold, 2) placer gold sites, 3) training sites for carbonate-hosted lead-zinc, and 4) small lead-zinc mines and...
Authors
D. E. Boleneus
Plutons and accretionary episodes of the Klamath Mountains, California and Oregon Plutons and accretionary episodes of the Klamath Mountains, California and Oregon
The Klamath Mountains consist of various accreted terranes and include many plutons that range in composition from gabbro to granodiorite. Some of the plutons (preaccretionary plutons) were parts of terranes before the terranes accreted; others (accretionary plutons) intruded during or after the accretion of their host terrane(s). This report attempts to (1) graphically illustrate how...
Authors
William P. Irwin, Joseph L. Wooden
Principal facts for gravity stations and physical property measurements in the Lake Mead 30' by 60' quadrangle, Nevada and Arizona Principal facts for gravity stations and physical property measurements in the Lake Mead 30' by 60' quadrangle, Nevada and Arizona
The U.S. Geological Survey (USGS) collected 811 gravity stations on the Lake Mead 30' by 60' quadrangle from October, 1997 to September, 1999. These data were collected in support of geologic mapping of the Lake Mead quadrangle. In addition to these new data, gravity stations were compiled from a number of sources. These stations were reprocessed according to the reduction method...
Authors
V.E. Langenheim, J. G. Davidson, M.L. Anderson, H. R. Blank
High-angle faults in the basement of Yucca Flat, Nevada Test Site, Nevada, based on analysis of a constrained gravity inversion surface High-angle faults in the basement of Yucca Flat, Nevada Test Site, Nevada, based on analysis of a constrained gravity inversion surface
Using a model of the topographic subsurface derived from drill hole and gravity inversion analysis of the basement rocks in Yucca Flat, Nevada Test Site (NTS), Nevada, a fault map and digital fault dataset were constructed based on offsets of the basement surface. Because these faults are, in large part, not present at the surface, they are interpreted to be inactive faults, older than...
Authors
Geoffrey A. Phelps, Edwin H. McKee
Digital geologic map of part of the Thompson Falls 1:100,000 quadrangle, Idaho Digital geologic map of part of the Thompson Falls 1:100,000 quadrangle, Idaho
The geology of the Thompson Falls 1:100,000 quadrangle, Idaho was compiled by Reed S. Lewis in 1997 onto a 1:100,000-scale greenline mylar of the topographic base map for input into a geographic information system (GIS). The resulting digital geologic map GIS can be queried in many ways to produce a variety of geologic maps. Digital base map data files (topography, roads, towns, rivers...
Authors
Reed S. Lewis, Pamela D. Derkey
Alaska resource data file: Blying Sound quadrangle Alaska resource data file: Blying Sound quadrangle
No abstract available.
Authors
Jeff Huber
Inversion of gravity data to define the pre-Tertiary surface and regional structures possibly influencing ground-water flow in the Pahute Mesa-Oasis Valley region, Nye County, Nevada Inversion of gravity data to define the pre-Tertiary surface and regional structures possibly influencing ground-water flow in the Pahute Mesa-Oasis Valley region, Nye County, Nevada
A three-dimensional inversion of gravity data from the Pahute Mesa–Oasis Valley region reveals a topographically complex pre-Tertiary basement surface. Beneath Pahute Mesa, the thickness of the Tertiary volcanic deposits may exceed 5 km within the Silent Canyon caldera complex. South of Pahute Mesa in Oasis Valley, basement is shallower ( 1 km) but between this valley and the Timber...
Authors
T.G. Hildenbrand, V.E. Langenheim, E. A. Mankinen, E.H. McKee
Geologic framework for the Puget Sound aquifer system, Washington and British Columbia Geologic framework for the Puget Sound aquifer system, Washington and British Columbia
The Puget-Willamette study area is composed of two distinct subareas, the Puget Sound Lowland and the Willamette Lowland. The study area for this report is the Puget Sound Lowland, which is located in western Washington and in a small part of southwestern British Columbia, Canada. The lowland encompasses an area of about 17,610 square miles and contains about 2,615 square miles of...
Authors
M. A. Jones
Geologic datasets for weights of evidence analysis in northeast Washington: 3. Minerals-related permits on national forests, 1967 to 1998 Geologic datasets for weights of evidence analysis in northeast Washington: 3. Minerals-related permits on national forests, 1967 to 1998
Permits to explore for and (or) develop mineral resources on forest land can be used to indicate locations and types of mineral-related activities on national forests. Permits for these activities require filing at the Forest Service a Notice of Intention (Notice) to conduct mineral exploration activities and (or) a Plan of Operation (Plan). A Plan of Operation is required is significant
Authors
D. E. Boleneus
Structure and metamorphism of the Franciscan Complex, Mt. Hamilton area, Northern California Structure and metamorphism of the Franciscan Complex, Mt. Hamilton area, Northern California
Truncation of metamorphic isograds and fold axes within coherent terranes of Franciscan metagraywacke by intervening zones of melange indicate that the melange is tectonic and formed after the subduction-related metamorphism and folding. These relations are expressed in two terranes of blueschist-facies rocks of the Franciscan Complex in the Mt. Hamilton area, northern California-the...
Authors
M.C. Blake, C. M. Wentworth
Alaska resource data file: Bendeleben quadrangle Alaska resource data file: Bendeleben quadrangle
No abstract available.
Authors
Travis Hudson
Alaska resource data file: Mount Fairweather quadrangle Alaska resource data file: Mount Fairweather quadrangle
No abstract available.
Authors
C. C. Hawley