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Publications

National Laboratories Program publications.

Filter Total Items: 1080

Isotopes and ages in the northern Peninsular Ranges batholith, southern California Isotopes and ages in the northern Peninsular Ranges batholith, southern California

Strontium, oxygen and lead isotopic and rubidium-strontium geochronologic studies have been completed on Cretaceous and Jurassic (?) granitic rock samples from the northern Peninsular Ranges batholith in southern California. Many of these samples were collected systematically and studied chemically by A. K. Baird and colleagues (Baird and others, 1979). The distribution of these granitic...
Authors
Ronald W. Kistler, Joseph L. Wooden, Douglas M. Morton

Surficial and bedrock geologic map database of the Kelso 7.5 Minute quadrangle, San Bernardino County, California Surficial and bedrock geologic map database of the Kelso 7.5 Minute quadrangle, San Bernardino County, California

This geologic map database describes geologic materials for the Kelso 7.5 Minute Quadrangle, San Bernardino County, California. The area lies in eastern Mojave Desert of California, within the Mojave National Preserve (a unit of the National Parks system). Geologic deposits in the area consist of Proterozoic metamorphic rocks, Cambrian-Neoproterozoic sedimentary rocks, Mesozoic plutonic...
Authors
David R. Bedford

A revised dislocation model of interseismic deformation of the Cascadia subduction zone A revised dislocation model of interseismic deformation of the Cascadia subduction zone

CAS3D‐2, a new three‐dimensional (3‐D) dislocation model, is developed to model interseismic deformation rates at the Cascadia subduction zone. The model is considered a snapshot description of the deformation field that changes with time. The effect of northward secular motion of the central and southern Cascadia forearc sliver is subtracted to obtain the effective convergence between...
Authors
Kelin Wang, Ray E. Wells, Stephane Mazzotti, Roy D. Hyndman, Takeshi Sagiya

Geologic map and digital database of the Yucaipa 7.5’ quadrangle, San Bernardino and Riverside Counties, California Geologic map and digital database of the Yucaipa 7.5’ quadrangle, San Bernardino and Riverside Counties, California

Introduction This geologic database of the Yucaipa 7.5' quadrangle was prepared by the Southern California Areal Mapping Project (SCAMP), a regional geologic-mapping project sponsored jointly by the U.S. Geological Survey and the California Geological Survey. The database was developed as a contribution to the National Cooperative Geologic Mapping Program's National Geologic Map Database...
Authors
Jonathan C. Matti, D. M. Morton, B. F. Cox, S. E. Carson, T. J. Yetter, P. M. Cossette, M. C. Wright, S. A. Kennedy, M. L. Dawson, R. M. Hauser

Preliminary geologic map of the Fontana 7.5' quadrangle, Riverside and San Bernardino Counties, California Preliminary geologic map of the Fontana 7.5' quadrangle, Riverside and San Bernardino Counties, California

Open-File Report 03-418 is a digital geologic data set that maps and describes the geology of the Fontana 7.5’ quadrangle, Riverside and San Bernardino Counties, California. The Fontana quadrangle database is one of several 7.5’ quadrangle databases that are being produced by the Southern California Areal Mapping Project (SCAMP). These maps and databases are, in turn, part of the nation...
Authors
Douglas M. Morton, Kelly R. Bovard

Cx-02 Program, workshop on modeling complex systems Cx-02 Program, workshop on modeling complex systems

This publication contains the abstracts and program for the workshop on complex systems that was held on November 19-21, 2002, in Reno, Nevada. Complex systems are ubiquitous within the realm of the earth sciences. Geological systems consist of a multiplicity of linked components with nested feedback loops; the dynamics of these systems are non-linear, iterative, multi-scale, and operate...
Authors
Victor G. Mossotti, Jo Ann Barragan, Todd D. Westergard

Studies by the U.S. Geological Survey in Alaska, 2001 Studies by the U.S. Geological Survey in Alaska, 2001

The collection of 14 studies that follow continues the series of U.S. Geological Survey (USGS) investigative reports in Alaska under the broad umbrella of the geologic sciences. This series presents new and sometimes-preliminary findings that are of interest to Earth scientists in academia, government, and industry; to land and resource managers; and to the general public. The reports...
Authors
John P. Galloway

Preliminary location and age database for invertebrate fossils collected in the San Francisco Bay region, California Preliminary location and age database for invertebrate fossils collected in the San Francisco Bay region, California

Most geologic maps published for central California in the past century have been made without the benefit of microfossils. The age of Cretaceous and Tertiary rocks in the structurally complex sedimentary formations of the Coast Ranges is critical in determining stratigraphic succession and in determining whether the juxtapositon of similar appearing formations means that a fault is...
Authors
John M. Parker, William B. West, William T. Malmborg, Earl E. Brabb
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