San Jacinto Intrusive Complex: 2. Geochemistry
نویسندگان
چکیده
منابع مشابه
San Jacinto Intrusive Complex 3. Constraints on Crustal Magma Chamber Processes from Strontium Isotope Heterogeneity
Strontiu• isotope data from three larg e plutons interpreted as derived from dynamic mag• chambers (Hill, this issue; Hill et al., this issue) show the existence of pronounced isotopic heteroEeneity within each unit. Ranges of calculated initial 8?St/BeSt are unit I, 0.70600.7076; unit II, 0.7060-0.7074; unit III, 0.70580.7073. A limited sample of mafic inclusions and dyke rocks, interpreted as...
متن کاملA case for historic joint rupture of the San Andreas and San Jacinto faults
The San Andreas fault is considered to be the primary plate boundary fault in southern California and the most likely fault to produce a major earthquake. I use dynamic rupture modeling to show that the San Jacinto fault is capable of rupturing along with the San Andreas in a single earthquake, and interpret these results along with existing paleoseismic data and historic damage reports to sugg...
متن کاملInitiation of the San Jacinto Fault and its Interaction with the San Andreas Fault: Insights from Geodynamic Modeling
The San Andreas Fault (SAF) is the Pacific-North American plate boundary, yet in southern California a significant portion of the relative plate motion is accommodated by the San Jacinto Fault (SJF). Here we investigate the initiation of the SJF and its interaction with the SAF in a threedimensional visco-elasto-plastic finite-element model. The model results show that the restraining bend of t...
متن کاملA Re-examination of Historic Earthquakes in the San Jacinto Fault Zone, California
The high level of seismic activity and the potential for large earthquakes in the San Jacinto fault zone, southern California, make it desirable to have accurate locations and source parameters for as many previous events as possible. Prior to the installation of a dense seismic network in this region, earthquakes were located using only a few stations with generally poor azimuthal coverage res...
متن کاملDeep creep as a cause for the excess seismicity along the San Jacinto fault
Since 1890, the San Jacinto fault in Southern California has been the site of eleven earthquakes of moderate magnitude (6 < M < 7) and tens of thousands of small earthquakes, but none of large magnitude1,2. This activity contrasts sharply with the seismic quiescence of the nearby southern San Andreas fault. Although this fault slips at a rate higher than that associated with the San Jacinto fau...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Solid Earth
سال: 1988
ISSN: 0148-0227
DOI: 10.1029/jb093ib09p10349