http://oaklandgeology.wordpress.com/2009/05/04/rockridge-rocks/ focused on, near and under Oakland, California Sun, 05 May 2013 18:10:05 +0000 hourly 1 http://wordpress.com/ http://oaklandgeology.wordpress.com/2009/05/04/rockridge-rocks/#comment-1316 Sat, 27 Feb 2010 19:10:26 +0000 http://oaklandgeology.wordpress.com/?p=432#comment-1316 I am a teacher at Peralta Elementary. I am working with a few other teachers from my school on an arts unit about what is under our feet. We are curious if you would share some of your resources for finding good information on the geological history of Rockridge/Oakland. Thanks

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