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Publications of the Branch of Atlantic Marine Geology for Calendar Year 1990 Publications of the Branch of Atlantic Marine Geology for Calendar Year 1990
This U.S. Geological Survey Open-File Report [extract] contains a listing of publications authored or co-authored by members of the Branch of Atlantic Marine Geology and published in calendar year 1990. The Branch conducts a broad geologic and geophysical research and mapping program, primarily along the U.S. Atlantic Margin, in the Great Lakes, the Gulf of Mexico, the Caribbean and...
Authors
Margaret C. Mons-Wengler, Robert N. Oldale
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska, February 1991 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska, February 1991
No abstract available.
Authors
John B. Townshend, Richard V. O’Connell, Carol Ann Varner
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska, July 1991 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska, July 1991
No abstract available.
Authors
John B. Townshend, Richard V. O’Connell, Carol Ann Varner
Density and magnetic susceptibility measurements of rocks in the Wichita Uplift and Slick Hills, southwestern Oklahoma Density and magnetic susceptibility measurements of rocks in the Wichita Uplift and Slick Hills, southwestern Oklahoma
No abstract available.
Authors
Lee-Ann Bradley, Meridee Jones-Cecil
Effects of a landslide complex on sediment discharges and loads in the Muddy Creek drainage basin and deposition into Paonia Reservoir, west-central Colorado, 1986-87 Effects of a landslide complex on sediment discharges and loads in the Muddy Creek drainage basin and deposition into Paonia Reservoir, west-central Colorado, 1986-87
No abstract available.
Authors
C. L. Appel, D. L. Butler
Preliminary map of landslide features and coseismic fissures in the Summit Road area of the Santa Cruz Mountains triggered by the Loma Prieta earthquake of October 17, 1989 Preliminary map of landslide features and coseismic fissures in the Summit Road area of the Santa Cruz Mountains triggered by the Loma Prieta earthquake of October 17, 1989
No abstract available.
Authors
T. E. Spittler, E. L. Harp
Geodetic estimate of coseismic slip during the 1989 Loma Prieta, California, Earthquake Geodetic estimate of coseismic slip during the 1989 Loma Prieta, California, Earthquake
Offsets in the relative positions of geodetic stations resulting from the Loma Prieta earthquake can be explained with a dislocation model that includes buried oblique slip on a rupture surface extending 37 km along the strike of the San Andreas fault, dipping 70° to the SW, and extending from a depth of about 5 to 17.5 km. Assuming uniform slip on a rectangular surface, the mean values...
Authors
Michael Lisowski, W.H. Prescott, James C. Savage, M. J. Johnson
A possible geodetic anomaly observed prior to the Loma Prieta, California, Earthquake A possible geodetic anomaly observed prior to the Loma Prieta, California, Earthquake
Monthly measurements since mid‐1981 of distance from a geodetic station located 11 km from the epicenter of the Loma Prieta earthquake (Ms = 7.1; October 17, 1989) to three stations 30 to 40 km distant provides an unusually complete record of deformation in the epicentral region in the years prior to an earthquake. Roughly 1.3 years before the earthquake, at about the time of the first...
Authors
Michael Lisowski, W.H. Prescott, James C. Savage, Jerry L. Svarc
An apparent shear zone trending north‐northwest across the Mojave Desert into Owens Valley, eastern California An apparent shear zone trending north‐northwest across the Mojave Desert into Owens Valley, eastern California
Strain rates measured at four geodetic networks in eastern California situated between northern Owens Valley and the Transverse Ranges along a small circle drawn about the Pacific‐North America pole of rotation are remarkably consistent. Each exhibits 0.14 μrad/yr simple right‐lateral engineering‐shear‐strain accumulation across the local vertical plane tangent to the small circle. Local...
Authors
James C. Savage, Michael Lisowski, W.H. Prescott