1. Geologic map and cross-sections of Tertiary rocks in the Thomas Range and northern Drum Mountains, Juab County, Utah [cartographic material] Yale Public content 1979. 2015-02-04T16:52:39Z. 2015-02-17T23:13:17Z. Lindsey, David A. The Survey. English. Public. Utah, Juab County, and U.S. Tertiary and From 2 to 65 million years ago.