| Abstract: | High-resolution seismic-reflection profiles (3.5 kHz) show that a distinctive, widespread reflection occurs in the sediments beneath Upper Klamath Lake, Oregon. Coring reveals that this reflection is formed by Mazama tephra (MT), about 7 ka in age. The MT horizon is faulted in many places and locally displaced by as much as 3.1 m. Differential displacement of multiple horizons indicates recurrent fault movement, perhaps three episodes since deposition of the Mazama. The pattern of faulting indicates northeast-southwest extension beneath the lake basin. |
| Genre: | Article |
| ProdID: | 70022828 |
| Citation Author: | Colman, S. M.; Rosenbaum, J. G.; Reynolds, R. L.; Sarna-Wojcicki, A. M. |
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| Citation End Page: | 247 |
| Citation Issue: | 1 |
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| Citation Language: | English |
| Citation Larger Work Title: | Bulletin of the Seismological Society of America |
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| Citation Number Of Pages: | 5 |
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| Citation Search Results Text: | Post-Mazama (7 KA) faulting beneath Upper Klamath Lake, Oregon; 2000; Article; Journal; Bulletin of the Seismological Society of America; Colman, S. M.; Rosenbaum, J. G.; Reynolds, R. L.; Sarna-Wojcicki, A. M. |
| Citation Start Page: | 243 |
| Citation Volume: | 90 |
| Citation Year: | 2000 |
| Type: | citation/reference |
| Text: | Post-Mazama (7 KA) faulting beneath Upper Klamath Lake, Oregon; 2000; Article; Journal; Bulletin of the Seismological Society of America; Colman, S. M.; Rosenbaum, J. G.; Reynolds, R. L.; Sarna-Wojcicki, A. M. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Sat, 1 Jan 2000 00:00 -0600 |
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