Preliminary reconnaissance geologic maps of the Garnet Range, western Montana

Abstract

The information on these maps is preliminary and questionable areas have not been field checked for accuracy. The mapping was done at a level of detail that was compatible for compilation, at 1:250,000 scale, of The Butte 2° quadrangle, Montana. Slightly more detailed study was made on the overthrust-fault zone of the Garnet Range, however. These maps do not represent the standards of mapping common to U.S.G.S. 1:24,000 quadrangles, and these maps should be considered as rough-draft field compilations.