by Steve Rowland Emeritus Professor of Geology, UNLV The most common and conspicuous rocks exposed in Gold Butte National Monument can be lumped into three groups: (1) Jurassic windblown sandstone, (2) Paleozoic marine limestone, and (3) pre-Cambrian granite and metamorphic rocks. Each of these groups is briefly described below.  The Jurassic sandstones (belonging to the..