| Abstract: | A band of seismicity transects the southern Sierra Nevada range between the northeastern end of the site of the 1952 MW (moment magnitude) 7.3 Kern County earthquake and the site of the 1946 MW 6.1 Walker Pass earthquake. Relocated earthquakes in this band, which lacks a surface expression, better delineate the northeast-trending seismic lineament and resolve complex structure near the Walker Pass mainshock. Left-lateral earthquake focal planes are rotated counterclockwise from the strike of the seismic lineament, consistent with slip on shear fractures such as those observed in the early stages of fault development in laboratory experiments. We interpret this seismic lineament as a previously unrecognized, incipient, currently blind, strike-slip fault, a unique example of a newly forming structure. |
| Genre: | Article |
| ProdID: | 70021492 |
| Citation Author: | Bawden, G. W.; Michael, A. J.; Kellogg, L. H. |
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| Citation End Page: | 604 |
| Citation Issue: | 7 |
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| Citation Language: | English |
| Citation Larger Work Title: | Geology |
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| Citation Number Of Pages: | 4 |
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| Citation Search Results Text: | Birth of a fault: Connecting the Kern County and Walker Pass, California, earthquakes; 1999; Article; Journal; Geology; Bawden, G. W.; Michael, A. J.; Kellogg, L. H. |
| Citation Start Page: | 601 |
| Citation Volume: | 27 |
| Citation Year: | 1999 |
| Type: | citation/reference |
| Text: | Birth of a fault: Connecting the Kern County and Walker Pass, California, earthquakes; 1999; Article; Journal; Geology; Bawden, G. W.; Michael, A. J.; Kellogg, L. H. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Fri, 1 Jan 1999 00:00 -0600 |
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