Cutting more rocks…

I went back up to the rock saw lab to help Victoria Petryshyn cut some of the larger stromatolites from Walker Lake. These are carbonates that are somewhere around 30,000 years old.  There are growth patterns up and then off to the side, just very cool. 

 This one is upside down but you can really see the great laminations.

 And then another great ~540 million year old stromatolite from Mt. Dunfee.