1. Maps showing interpretation of geophysical anomalies of the northwestern Uncompahgre uplift and vicinity, Grand County, Utah, and Mesa County, Colorado Yale Public content 1992. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey ; For sale by Map Distribution. English. Public. Utah, Grand County, Colorado, Mesa County, and Uncompahgre Plateau. Proterozoic.