Re: M3.4 Santa Barbara
Posted by heartland chris on November 17, 2007 at 17:33:36:

Penny, The Carpinteria fault is South-dipping and south-side up. The Red Mountain fault is North-dipping and North-side-up. The Carpinteria may be a backthrust to the Red Mountain. There were swarms in the 60s and 70s in the Channel, before my time in the area, but it has been rather quiet since I arrived there in 1988. I think it was Ed Keller who called some fault out there the Beast in the Channel....I forget if it was the S-dipping Oak Ridge fault (that I work on and just happen to be working on this evening), or the deep Channel Islands thrust.

Or, he may have been talking about the N-dipping coastal thrust system: Red Mountain, which steps a lot of its thrust slip over to the south to the Pitas Point/North Channel faults system. These are the worst hazard to Carpinteria-Santa Barbara-Goleta including UCSB campus.
Chris


Follow Ups:
     ● Educate Me, Please - Cathryn  06:56:52 - 11/18/2007  (72921)  (1)
        ● Re: Educate Me, Please - heartland chris  07:10:59 - 11/18/2007  (72922)  (1)
           ● Re: Educate Me, Please - Cathryn  18:58:08 - 11/18/2007  (72927)  (0)
     ● Re: M3.4 Santa Barbara - PennyB  22:31:08 - 11/17/2007  (72920)  (1)
        ● primitive 2D seismic reflection data - heartland chris  07:19:07 - 11/18/2007  (72923)  (1)
           ● Re: primitive 2D seismic reflection data - PennyB  12:05:18 - 11/18/2007  (72925)  (1)
              ● Stop it! - Cathryn  19:02:55 - 11/18/2007  (72928)  (1)
                 ● Re: Stop it! - PennyB  22:39:09 - 11/18/2007  (72929)  (0)