Read several of these articles/sections of books:
http://www.google.com/search?hl=en&source=hp&q=metamorphic+rocks+and+the+San+Andreas+fault&aq=f&aqi=&oq=
The second one looks promising, but is undoubtedly not the only place you'll find information.
What is the relation of metamorphic rocks and the San Andreas fault?
1 answer