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San Andreas Fault Zone cross section

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Uploaded by on Mar 11, 2008

SAFZ pressure ridge from the highway 14 road cut in Palmdale, CA

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Travel & Events

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Uploader Comments (Whatsfun)

  • thats not actually the fault, it is at the base of that ridge at ave S and the 14.

  • Correct. This is a pressure ridge. The "fault" itself is a zone of fault lines, not one in particular.

  • I prefer to think of it as a wide grinding zone full of gouge, with several ruptures that happen during and earthquake. A good place to see the width of the fault is at cajon pass above the 15.

  • Cool, I'll check out the view at Cajon, too. thanks.

  • Cool! I want to sit on it and eat jello! :D

  • I recommend lime jello

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  • @SnowVixen89 in this heat? how about a slurpee?

  • Lol I went through a few times once in '89 to visit my family in San Jose and a few other time it's kind of erie in away.

  • According to the Oxford Dictionary of Earth Sciences a Pressure Ridge is:

    "A curved, elongated ridge on the surface of a basaltic lava flow, formed at right angles to the flow direction".

    Answer me this - why is there basaltic lava, normally associated with a mid-ocean ridge or a rift valley, on a right-lateral strike-slip fault like the SAF?

    It sure looks like a fold to me. Am I wrong? Any seismologists out there to help with this.

    Methinks the video title is a little deceptive.

  • Sooo cool!

  • thats because us that live in palmdale are beasts!!!

  • Palmdale Ca!

  • I almost fell in that damn fault in a cave in San Diego. If it wern't for a piece of rock for me to grab quickly, I would've been a goner.

  • I want to bury myself in the fault for a little while. It is so awsome!

  • check out cajon pass on google earth, look for oakie flat road. its a trail that takes you a couple miles into the SAFZ.

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