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: 1349
Rapid extension recorded by cooling‐age patterns and brittle deformation, Naxos, Greece Rapid extension recorded by cooling‐age patterns and brittle deformation, Naxos, Greece
The metamorphic core complex exposed as the island of Naxos in the Aegean Sea records an unusually complete sequence of structures developed as a result of continental extension. The structures formed during Miocene rise and cooling from ductile, upper amphibolite facies and anatectic conditions to brittle near‐surface conditions beneath the Naxos detachment fault. Top‐to‐the‐north...
Authors
B.E. John, Keith A. Howard
The generation of oceanic rhyolites by crystal fractionation: the basalt-rhyolite association at Volcán Alcedo, Galápagos archipelago The generation of oceanic rhyolites by crystal fractionation: the basalt-rhyolite association at Volcán Alcedo, Galápagos archipelago
Alcedo volcano is one of six shield volcanoes on Isabela Island in the western Galápagos Islands. Although Alcedo is dominantiy basaltic, it is unusual in that it also has erupted ∼1 km3 of rhyolite. The rhyolitic phase marked a 10-fold decrease in the mass-eruption rate of the volcano, and the volcano has returned to erupting basalt. The basalts are tholeiitic and range from strongly to...
Authors
Dennis Geist, Keith A. Howard, Peter Larson
Summary of lithologic logging of new and existing boreholes at Yucca Mountain, Nevada, July 1994 to November 1994 Summary of lithologic logging of new and existing boreholes at Yucca Mountain, Nevada, July 1994 to November 1994
No abstract available.
Authors
T.C. Moyer, J.K. Geslin, D.C. Buesch
A bibliography of Klamath Mountains geology, California and Oregon, listing authors from Aalto to Zucca for the years 1849 to mid-1995 A bibliography of Klamath Mountains geology, California and Oregon, listing authors from Aalto to Zucca for the years 1849 to mid-1995
No abstract available.
Authors
William P. Irwin
Geologic map of the Hayward fault zone, Contra Costa, Alameda, and Santa Clara counties, California: A digital database Geologic map of the Hayward fault zone, Contra Costa, Alameda, and Santa Clara counties, California: A digital database
The Hayward is one of three major fault zones of the San Andreas system that have produced large historic earthquakes in the San Francisco Bay Area (the others being the San Andreas and Calaveras). Severe earthquakes were generated by this fault zone in 1836 and in 1868, and several large earthquakes have been recorded since 1868. The Hayward fault zone is considered to be the most...
Authors
R. W. Graymer, D. L. Jones, E. E. Brabb
Summary of lithologic logging of new and existing boreholes at Yucca Mountain, Nevada, August 1993 to February 1994 Summary of lithologic logging of new and existing boreholes at Yucca Mountain, Nevada, August 1993 to February 1994
No abstract available.
Authors
Jeffrey K. Geslin, Thomas C. Moyer
Preliminary geologic map of the Oat Mountain 7.5' quadrangle, southern California: A digital database Preliminary geologic map of the Oat Mountain 7.5' quadrangle, southern California: A digital database
This database, identified as "Preliminary Geologic Map of the Oat Mountain 7.5' Quadrangle, southern California: A Digital Database," has been approved for release and publication by the Director of the USGS. Although this database has been reviewed and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. This database is...
Authors
R.F. Yerkes, Russell H. Campbell
Preliminary geologic map of the Calabasas 7.5' quadrangle, southern California: A digital database Preliminary geologic map of the Calabasas 7.5' quadrangle, southern California: A digital database
This Open-File report is a digital geologic map database. This pamphlet serves to introduce and describe the digital data. There is no paper map included in the Open-File report. This digital map database is compiled from previously published sources combined with some new mapping and modifications in nomenclature. The geologic map database delineates map units that are identified by...
Authors
R. F. Yerkes, R. H. Campbell
World class base and precious metal deposits; a quantitative analysis World class base and precious metal deposits; a quantitative analysis
Over 62 percent of the 193,000 metric tons of gold discovered to date is located in four countries and more than 68 percent occurs in four types of mineral deposits. About 55 percent of the 1,740,000 metric tons of silver found is in four countries and 45 percent is in four types of deposits. Fifty-six percent of the 1.52 billion metric tons of discovered copper is from four countries...
Authors
Donald A. Singer
Jurassic thrusting of Precambrian basement over Paleozoic cover in the Clipper Mountains, southeastern California Jurassic thrusting of Precambrian basement over Paleozoic cover in the Clipper Mountains, southeastern California
The Clipper Mountains in the eastern Mojave Desert expose evidence of Jurassic plutonic intrusion along what was an active thrust at the east fringe of the exposed Cordilleran Jurassic magmatic arc. This event occurred during a period of widespread arc magmatism and intra-arc thrusting in the Cordillera related to subduction under the west edge of North America. Jurassic plutons in the...
Authors
Keith A. Howard, K.J.W. McCaffrey, J. L. Wooden, D.A. Foster, S.E. Shaw
Preliminary geologic map of the Piru 7.5' quadrangle, southern California: A digital database Preliminary geologic map of the Piru 7.5' quadrangle, southern California: A digital database
This Open-File report is a digital geologic map database. This pamphlet serves to introduce and describe the digital data. There is no paper map included in the Open-File report. This digital map database is compiled from previously published sources combined with some new mapping and modifications in nomenclature. The geologic map database delineates map units that are identified by...
Authors
R. F. Yerkes, Russell H. Campbell
Fractal lognormal percentage assessment of porphyry copper resources Fractal lognormal percentage assessment of porphyry copper resources
No abstract available.
Authors
R. A. Crovelli, S. B. Suslick, Donald A. Singer, R.H. Balay