![](http://www.alamy.com/thumbs/6/38243BB5-542C-423C-BB7C-C772622886FD/RNJ8JT.jpg)
A specimen showing reverse fault in a sandstone rock. The Field Museum, Chicago, Illinois, USA.
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Keywords: america, american, chicago, education, fault, field, geology, museum, reverse, rock, sandstone, science, specimen, states, thrust, travel, united, usa