Recurrent movement on California's Imperial Fault caused right-lateral fault offset at Interstate 8.
Notes on verification
Claim matches official USGS caption verbatim and is corroborated by independent sources (Flickr photo documentation, SoCalRegion geology page, Caltech SCEDC) describing repeated fault ruptures (1940, 1966, 1979) causing measurable right-lateral offset of I-8. [tier=silver indep_score=0.833 clusters=3 claim_tier=notable]
Sources
- What is the relationship between faults and earthquakes ... - USGS.gov (seed:environment_and_wildlife)
- https://www.flickr.com/photos/38037974@N00/4532014041 (corroboration)
- https://scedc.caltech.edu/earthquake/imperial.html (corroboration)
- https://www.socalregion.com/geology/san_andreas/ (corroboration)