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San Andreas Fault: Highest Stress in 1,000 Years
June 22 , 2026
16 hrs 0 min
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- New study suggests the San Andreas Fault (California, United States) has accumulated its highest stress levels in the last 1,000 years.
- The study was published in the AGU (American Geophysical Union) Journals based on earthquake cycle modelling.
- Researchers analysed a reconstructed 1,000-year earthquake history using geological and radiocarbon data.
- The model shows stress build-up beneath the fault, especially near Cajon Pass, where fault strands interact.
- Elevated stress does not indicate an immediate earthquake, only long-term accumulation of tectonic strain.
- The San Andreas Fault is a major tectonic boundary where the Pacific Plate and the North American Plate meet.
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