Showing posts with label gneiss geology golden colorado metamorphic igneous age heat pressure boulder rock river canyon science nature outdoors magma granite. Show all posts
Showing posts with label gneiss geology golden colorado metamorphic igneous age heat pressure boulder rock river canyon science nature outdoors magma granite. Show all posts

Sunday, November 6, 2016

Gneiss & Easy

Devin has a nice time checking out some nice gneiss.


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