Publications
Filter Total Items: 1155
Reconnaissance landslide map of the Healdsburg 15-minute Quadrangle, Sonoma County, California Reconnaissance landslide map of the Healdsburg 15-minute Quadrangle, Sonoma County, California
No abstract available.
Authors
Carl M. Wentworth
Well bore breakouts and in situ stress Well bore breakouts and in situ stress
The detailed cross-sectional shape of stress induced well bore breakouts has been studied using specially processed ultrasonic borehole televiewer data. Breakout shapes are shown for a variety of rock types and introduce a simple elastic failure model which explains many features of the observations. Both the observations and calculations indicate that the breakouts define relatively...
Authors
Mark D. Zoback, Daniel Moos, Larry Mastin, Roger N. Anderson
Canyon-filling lavas and lava dams on the Boise River, Idaho, and their significance for evaluating downcutting during the last 2 million years Canyon-filling lavas and lava dams on the Boise River, Idaho, and their significance for evaluating downcutting during the last 2 million years
Basalts that periodically dammed the Boise River and its South Fork over the last 2 million years reveal the canyon history and illustrate how lava interacted with impounded river water. Intracanyon basalt flows record a granite canyon successively filled by lava and then recut at least five times in the last 2 million years. The most voluminous flow, Steamboat Rock Basalt, reached 60...
Authors
Keith A. Howard, John W. Shervais, E.H. McKee
Statistical relations among earthquake magnitude, surface rupture length, and surface fault displacement Statistical relations among earthquake magnitude, surface rupture length, and surface fault displacement
In order to refine correlations of surface-wave magnitude, fault rupture length at the ground surface, and fault displacement at the surface by including the uncertainties in these variables, the existing data were critically reviewed and a new data base was compiled. Earthquake magnitudes were redetermined as necessary to make them as consistent as possible with the Gutenberg methods...
Authors
Manuel G. Bonilla, Robert K. Mark, James J. Lienkaemper
Tectonstratigraphic terranes in southwestern Oregon Tectonstratigraphic terranes in southwestern Oregon
No abstract available.
Authors
M. Clark Blake
Geology of Point Reyes Peninsula and implications for San Gregorio fault history Geology of Point Reyes Peninsula and implications for San Gregorio fault history
No abstract available.
Authors
J. C. Clark, E. E. Brabb, H. G. Greene, D. C. Ross
Comment on “Geodynamic significance of Late Triassic to Early Cretaceous volcanic sequences of the Vizcaino Peninsula and Cedros Island” by C. Rangin, D. Girard, and R. Maury Comment on “Geodynamic significance of Late Triassic to Early Cretaceous volcanic sequences of the Vizcaino Peninsula and Cedros Island” by C. Rangin, D. Girard, and R. Maury
No abstract available.
Authors
Thomas E. Moore
Bibliography of alluvial-fan deposits Bibliography of alluvial-fan deposits
No abstract available.
Authors
T. H. Nilsen, Thomas E. Moore
Sedimentary facies and composition of Jurassic volcaniclastic turbidites at Cerro El Calvario, Vizcaino Peninsula, Baja California Sur, Mexico Sedimentary facies and composition of Jurassic volcaniclastic turbidites at Cerro El Calvario, Vizcaino Peninsula, Baja California Sur, Mexico
No abstract available.
Authors
Thomas E. Moore
Correlation of metamorphosed Paleozoic strata of the southeastern Mojave Desert region, California and Arizona: Discussion and reply Correlation of metamorphosed Paleozoic strata of the southeastern Mojave Desert region, California and Arizona: Discussion and reply
No abstract available.
Authors
H.J. Brown, Paul Stone, Keith A. Howard, Warren Hamilton
Geology of the Ruby Mountains-East Humboldt Range, Nevada: A Cordilleran metamorphic core complex Geology of the Ruby Mountains-East Humboldt Range, Nevada: A Cordilleran metamorphic core complex
No abstract available.
Authors
A.W. Snoke, Keith A. Howard