SFGate on MSN8h
People can't seem to find the Bay Area's Black Sands Beach
The Franciscan Complex is made up of three main rock varieties: radiolarian chert (a reddish, brown sedimentary rock that’s ...
EurekAlert!1mon
Grey pillow basalt with a brown alteration rim recovered by dredging (IMAGE)
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 ...