My cousin is working on her Masters Degree in Geology at Oregon State University. She sent me a link to this article.
http://www.outsideonline.com/outdoor-adventure/nature/Totally-Psyched-fo...
I think it does a good job of highlighting what could happen and showing where it has happened in the past.
Take some time and read it. I think you will enjoy it. Feel free to post comments here with thoughts or questions.
Mitch