David Gallagher has provided this brief-but-invaluable guide to the geological history of Bernal Hill. WHO KNEW???
More importantly, David is joining Team Bernalwood as a contributor. Woooooo! Welcome aboard, Sir David.
4 thoughts on “A Brief Guide to the Ancient Modern Geology of Bernal Hill”
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Bernalwood 
A fine addition, David is an igneous force.
Darned happy to be here, I think this blog really needs a curmudgeon
Chert. CHERT! CHEEEEEEERRRRRRRRRRTT! (shakes fist up towards Bernal.)
You might be interested in this, johnny0
Franciscan Formation Explained: