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Science 16 April 1976:
Vol. 192. no. 4236, pp. 251 - 253
DOI: 10.1126/science.192.4236.251
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Articles

Aseismic Uplift in Southern California

ROBERT O. CASTLE 1, JACK P. CHURCH 1, and MICHAEL R. ELLIOTT 1

1 U.S. Geological Survey, 345 Middlefield Road, Menlo Park, California 94025

Preliminary examination of the historic geodetic record has disclosed crustal uplift of 0.15 to 0.25 meter that apparently began around 1960 and has since grown to include at least 12,000 square kilometers of southern California. This uplift extends at least 150 kilometers west-northwestward along the San Andreas Fault from Cajon to Maricopa, southward from the San Andreas into the northern Transverse Ranges, and eastward from Lebec into and including much of western Mojave block. It seems to have grown spasmodically eastward from a center near the junction of the San Andreas and Garlock faults and has occurred largely within an area that has remained virtually aseismic since at least 1932. Although much of this area has been characterized by crustal mobility since at least the turn the century, the described uplift seems to be an unusually large and probably unique event superimposed the existing pattern of continuing deformation.

Submitted on January 26, 1976


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Correlation of Changes in Gravity, Elevation, and Strain in Southern California.
R. C. Jachens, R. C. JACHENS, W. THATCHER, C. W. ROBERTS, and R. S. STEIN (1983)
Science 219, 1215-1217
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Observations of Strain Accumulation Across the San Andreas Fault Near Palmdale, California, with a Two-Color Geodimeter.
J. O. Langbein, J. O. LANGBEIN, M. F. LINKER, A. MCGARR, and L. E. SLATER (1982)
Science 218, 1217-1219
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The Santa Barbara, California, earthquake of 13 August 1978.
E. J. CORBETT and C. E. JOHNSON (1982)
Bulletin of the Seismological Society of America 72, 2201-2226
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Consequence of an earthquake prediction on statistical estimates of seismic risk.
J. G. ANDERSON (1981)
Bulletin of the Seismological Society of America 71, 1637-1648
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Aseismic Uplift in California.
D. D. JACKSON, W. B. LEE, and C.-C. LIU (1981)
Science 213, 247
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Aseismic Uplift in Southern California: An Alternative Interpretation.
D. D. Jackson, D. D. JACKSON, W. B. LEE, and C.-C. LIU (1980)
Science 210, 534-536
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Speculations on the nature of the southern California uplift.
J. B. RUNDLE and W. THATCHER (1980)
Bulletin of the Seismological Society of America 70, 1869-1886
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Tectonic Tilt Rates Derived from Lake-Level Measurements, Salton Sea, California.
M. E. Wilson, M. E. WILSON, and S. H. WOOD (1980)
Science 207, 183-186
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The San Andreas fault system through time.
J. C. Crowell (1979)
Journal of the Geological Society 136, 293-302
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Strain accumulation from 1964 to 1977 near the epicentral zone of the 1976-1977 earthquake swarm southeast of Palmdale, California.
M. LISOWSKI and J. C. SAVAGE (1979)
Bulletin of the Seismological Society of America 69, 751-756
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A study of earthquakes in the Permian Basin of Texas-New Mexico.
A. M. ROGERS and A. MALKIEL (1979)
Bulletin of the Seismological Society of America 69, 843-865
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A tectonic interpretation of earthquake focal mechanisms and hypocenters in Ridge Basin, southern California.
J. N. MURDOCK (1979)
Bulletin of the Seismological Society of America 69, 417-425
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Strain-Softening Instability Model for the San Fernando Earthquake.
W. D. Stuart and W. D. STUART (1979)
Science 203, 907-910
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Strain in Southern California: Measured Uniaxial North-South Regional Contraction.
J. C. Savage, J. C. SAVAGE, W. H. PRESCOTT, M. LISOWSKI, and N. KING (1978)
Science 202, 883-885
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Earthquake Swarm Along the San Andreas Fault near Palmdale, Southern California, 1976 to 1977.
K. C. McNally, K. C. MCNALLY, H. KANAMORI, J. C. PECHMANN, and G. FUIS (1978)
Science 201, 814-817
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The temporal variation of teleseismic P-residuals for stations in southern California.
S. A. RAIKES (1978)
Bulletin of the Seismological Society of America 68, 711-720
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High Rates of Vertical Crustal Movement near Ventura, California.
R. S. Yeats and R. S. YEATS (1977)
Science 196, 295-298
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Episodic Strain Accumulation in Southern California.
W. Thatcher and W. Thatcher (1976)
Science 194, 691-695
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