Serpentinite |
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 SerpentiniteThis is a particularly spectacular example of a serpentinite facoid - a naturally polished rock surface created by shearing action with a larger fault zone; in this case, a strand of the San Andreas Fault zone in the Santa Cruz Mountains, CA. |
| https://gotbooks.miracosta.edu/rocks/metamorphic/26.html | 2/2/2021 |