POTD September 16, 2014: Silver Island Mountains, Box Elder County, Utah
Silver Island Mountains, Box Elder County, Utah
Photographer: Gregg Beukelman; © 2013
Chemical weathering produces pits and holes in the surface of Jurassic-age quartz monzonite at Crater Island, in the northeast part of the Basin and Range Province. The “island” of rock rises from the barren, salt-covered plains of the Great Salt Lake Desert east of the distant Pilot Range.