1. Geologic structure and altitude of the top of the Minnelusa Formation, northern Black Hills, South Dakota and Wyoming, and Bear Lodge Mountains, Wyoming Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Denver, Colorado : Open-File Services Section, Western Distribution Branch, U.S. Geological Survey Resource Type: Map Access & Availability: Loading
2. Geology and tectonic significance of early Proterozoic rocks in the Monico area, northern Wisconsin Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : Information Services [distributor] Resource Type: Map Access & Availability: Loading