Geoff,

This is a nice publication showing earthquake potential along the Oregon 
Coast
http://www.oregongeology.org/sub/quarpub/CascadiaWinter2010.pdf
Notice especially the Cascadia earthquake timeline for the last 10,000 years 
on bottom of page 8.

This publication talks about the similarity of the Oregon Coast to that of 
the Japanese Coast
http://www.oregongeology.org/pubs/cascadia/CascadiaWinter2012.pdf

Kay Wyatt



-----Original Message----- 
From: Bob Hancock
Sent: Saturday, March 16, 2013 10:07 PM
To: psnlist@..............
Subject: Re: Oregon USA: Is the coast of Oregon a Scarp?


Geoff -

The west coast of Oregon is on the North American Plate.  To the west of the 
coast of Oregon is the Juan de Fuca plate, which is actually a remnant of 
the Farallon plate, subducting to the east and moving under the North 
American Plate.  The subduction zone between the two plates is the Juan de 
Fuca subduction zone.  The Farallon plate no longer exists.

Bob Hancock

On Mar 16, 2013, at 5:10 PM, Geoff  wrote:

> Hello PSN,
>
> Does anyone know for sure whether or not that
> vertical cliff off the coast of Oregon is or is not an eq Scarp ?
>
> If it is not an eq scarp then how do you know for sure that is true ?
>
> Whatever made that cliff happened so fast that erosion
> has not been a factor in softening its features ?
>
> Just like to know; how everyone is so sure, its NOT an Earthquake fault 
> scarp at the Coast of Oregon, USA ?
>
> Cause if that is a scarp I'd say that Oregon, too, can have
> great earthquakes, and not just Washington.
>
> -- 
> *************
> It is by the Entropy, That I set my mind in Motion.
> Entropy is the seeking of equilibrium.
> It is by the Entropy that, I set my mind in motion.
>
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