Saturday, December 25, 2010

Helen goes rockhounding...

with Rachel and me at Copper Ridge, northwest of Arches National Park, looking through the ore piles at an old mining site (click to enlarge):
Eureka!  Helen prospects with her nose and finds a nice specimen of the copper carbonate mineral malachite:
While hiking elsewhere in the vicinity, Helen discovers a ripple-marked sandstone slab in the Morrison Formation.  Here she's considering the origin of interference ripples:
From her high vantage point on the top of the ridge, Helen surveys the laccolithic La Sal Mountains draped with snow:

Lastly, Helen quenches her thirst from an eroded theropod track after a complete exploration of the area:
Here's more about this easily accessible dinosaur trackway site.

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