As you enter Nevada on Highway 50 be sure to stop at Baker and see the fabulous Lehman Caves. Here you can see some of the best shield formations in the world. The Ranger guides make the science of the caves easy to understand for everyone.
Here is one of the shield formations.Just look at this drapery.
http://www.nps.gov/grba/planyourvisit/upload/Lehman%20Caves-2.pdf