Publications
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Interseismic strain and rotation rates in the northeast Mojave domain, eastern California
The northeast Mojave domain, a type locality for bookshelf faulting, is a region of east striking, left-lateral faults in the northeast corner of the Mojave block, a block otherwise dominated by ∼N40°W striking, right-lateral faults. Paleomagnetic evidence suggests that blocks within the domain have rotated clockwise about a vertical axis as much as 60° since 12.8 Ma [Schermer et al., 1996]. In 19
Authors
J. C. Savage, J. L. Svarc, II W. Prescott
Stress-induced, time-dependent fracture closure at hydrothermal conditions
Time-dependent closure of fractures in quartz was measured in situ at 22–530°C temperature and 0.1-150 MPa water pressure. Unlike previous crack healing and rock permeability studies, in this study, fracture aperture is monitored directly and continuously using a windowed pressure vessel, a long-working-distance microscope, and reflected-light interferometry. Thus the fracture volume and geometry
Authors
N.M. Beeler, S.H. Hickman
Stress triggering in thrust and subduction earthquakes and stress interaction between the southern San Andreas and nearby thrust and strike-slip faults
We argue that key features of thrust earthquake triggering, inhibition, and clustering can be explained by Coulomb stress changes, which we illustrate by a suite of representative models and by detailed examples. Whereas slip on surface-cutting thrust faults drops the stress in most of the adjacent crust, slip on blind thrust faults increases the stress on some nearby zones, particularly above the
Authors
J. Lin, R. S. Stein
The coefficient of friction of chrysotile gouge at seismogenic depths
We report new strength data for the serpentine mineral chrysotile at effective normal stresses, σn between 40 and 200 MPa in the temperature range 25°-280°C. Overall, the coefficient of friction, μ (= shear stress/effective normal stress) of water-saturated chrysotile gouge increases both with increasing temperature and σn, but the rates vary and the temperature-related increases begin at ~100°C.
Authors
Diane E. Moore, D. A. Lockner, H. Tanaka, K. Iwata
The role of water in gas hydrate dissociation
When raised to temperatures above the ice melting point, gas hydrates release their gas in well-defined, reproducible events that occur within self-maintained temperature ranges slightly below the ice point. This behavior is observed for structure I (carbon dioxide, methane) and structure II gas hydrates (methane-ethane, and propane), including those formed with either H2O- or D2O-host frameworks,
Authors
S. Circone, L.A. Stern, S. H. Kirby
Surface rupture and slip distribution of the Denali and Totschunda faults in the 3 November 2002 M 7.9 earthquake, Alaska
The 3 November 2002 Denali fault, Alaska, earthquake resulted in 341 km of surface rupture on the Susitna Glacier, Denali, and Totschunda faults. The rupture proceeded from west to east and began with a 48-km-long break on the previously unknown Susitna Glacier thrust fault. Slip on this thrust averaged about 4 m (Crone et al., 2004). Next came the principal surface break, along 226 km of the Dena
Authors
Peter J. Haeussler, David P. Schwartz, Timothy E. Dawson, Heidi D. Stenner, James J. Lienkaemper, Brian Sherrod, Francesca R. Cinti, Paola Montone, Patricia Craw, Anthony J. Crone, Stephen F. Personius
Crustal structure of the northern margin of the eastern Tien Shan, China, and its tectonic implications for the 1906 M~7.7 Manas earthquake
The Tien Shan orogenic belt is the most active intracontinental mountain belt in the world. We describe an 86-km-long N–S-trending deep seismic reflection profile (which passes through the southern Junggar basin) located on the northeastern Tien Shan piedmont. Two distinct anticlines beneath the northern margin of the Tien Shan are clearly imaged in the seismic section. In addition, we have imaged
Authors
Chun-Yong Wang, Zhu-En Yang, Hai Luo, Walter D. Mooney
Crustal structure along the geosciences transect from Altay to Altun Tagh
No abstract available.
Authors
Y.-X. Wang, G.-H. Han, M. Jiang, X.-C. Yuan, Walter D. Mooney, R. G. Coleman
Shear wave velocity, seismic attenuation, and thermal structure of the continental upper mantle
Seismic velocity and attenuation anomalies in the mantle are commonly interpreted in terms of temperature variations on the basis of laboratory studies of elastic and anelastic properties of rocks. In order to evaluate the relative contributions of thermal and non-thermal effects on anomalies of attenuation of seismic shear waves, Q−1s, and seismic velocity, Vs, we compare global maps of the therm
Authors
I.M. Artemieva, M. Billien, J.-J. Leveque, Walter D. Mooney
Photomosaics and logs of trenches on the San Andreas Fault, Thousand Palms Oasis, California
We present photomosaics and logs of the walls of trenches excavated for a paleoseismic study at Thousand Palms Oasis (Fig. 1). The site
is located on the Mission Creek strand of the San Andreas fault zone, one of two major active strands of the fault in the Indio Hills along the
northeast margin of the Coachella Valley (Fig. 2). The Coachella Valley section is the most poorly understood major pa
Authors
Thomas E. Fumal, William T. Frost, Christopher Garvin, John C. Hamilton, Monique Jaasma, Michael J. Rymer
Photomosaics and logs of trenches on the San Andreas Fault at Arano Flat near Watsonville, California
We present photomosaics and logs of the walls of trenches excavated for a paleoseismic
study at Arano Flat, one of two sites along the San Andreas fault in the Santa Cruz Mountains
on the Kelley-Thompson Ranch. At this location, the fault consists of a narrow
zone along the northeast side of a low ridge adjacent to a possible sag pond and extends about
60-70 meters across a broad alluvial flat
Authors
Thomas E. Fumal, Gordon F. Heingartner, Laura Samrad, Timothy E. Dawson, John C. Hamilton, John N. Baldwin
Thermal and chemical variations in subcrustal cratonic lithosphere: Evidence from crustal isostasy
The Earth's topography at short wavelengths results from active tectonic processes, whereas at long wavelengths it is largely determined by isostatic adjustment for the density and thickness of the crust. Using a global crustal model, we estimate the long-wavelength topography that is not due to crustal isostasy. Our most important finding is that cratons are generally depressed by 300 to 1500 m i
Authors
Walter D. Mooney, John E. Vidale