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Posted on 06/10/2026 6:41:20 AM PDT by BenLurkin
The critical role of Cajon Pass
Cajon Pass is the tectonically complex junction where the San Andreas and San Jacinto faults converge. It’s located near several densely populated communities, including Los Angeles, San Bernadino, Riverside, and Coachella Valley.
Burkhard and her colleagues determined that Cajon Pass can act as a so-called “earthquake gate,” controlling whether large ruptures remain confined to a single fault or cross both fault systems.
When stress on both faults accumulates simultaneously toward similarly high levels, it’s more likely that a large joint rupture will cross both systems, according to the study.
The model showed that stress has reached 3.6 megapascals (MPa) on the San Jacinto-Bernadino section, the highest level seen anywhere in the 1,000-year simulation. Meanwhile, the neighboring Mojave South section of the San Andreas fault has accumulated 2.8 MPa of stress, indicating that both segments are under similarly high levels of strain.
Again, this study does not predict when the next major earthquake could rock Southern California, nor does it show that such an event is necessarily imminent. Rather, it offers a clearer picture of the region’s seismic hazard. This critically stressed fault system could rupture at any time, so communities need to prepare for the worst-case scenario.
(Excerpt) Read more at gizmodo.com ...
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How exactly did they determine the stress on the faults 1000 years ago? What measurement tools did they have then?
The Joooooooooooos! Is there nothing they won’t stoop to!
Losing a chunk of California to the sea would be like a good case of diarrhea.
“Remember that there are some good folks who live in California.”
No argument with that but if they are smart, they are planning their escape right now.
“And he said, ‘Behold now, I have taken upon me to speak unto the Lord, which am I but dust and ashes: Suppose there be fifty righteous within the city; wilt thou also destroy and not spare the place for the fifty righteous that are therein?’”
Re the San Amdreas, your scenario is less immediate.
The Hayward Fault will likely go first, as usual.
I guess Donald Fagan will be moving back to Annandale.
Both sides will be pretty high. One in elevation, the other on drugs.
I wonder...
Trump’s Fault.
L
I’m worried how this would affect the high speed rail project and its cost. :)
All the way east to Sacramento?
Now that would be a BIG one.
NAPA valley is already dying.
Like everything libs touch.
Yes. Another $30 billion CA project.
$20 billion over budget, not done on time and only 5 blocks placed.
It was Charleston Heston.
He lives in the airport?
Every crook would get off the hook.
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