One of the best parts about living in the San Francisco Bay Area is that there is great geology very close by. I snapped this photo just a couple weeks ago when we showing some out-of-town visitors ...
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A grey pillow basalt with a brown alteration rim recovered by dredging during the KNOX-06-RR research cruise in 2007. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news ...