31. Maps and seismic profiles showing thickness and distribution of postglacial deposits beneath the southern two-thirds of Lake Michigan Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by U.S. Geological Survey, Map Distribution Resource Type: Map Access & Availability: Loading
32. Maps showing distribution, composition, and age of early and middle Cenozoic volcanic centers in Arizona, New Mexico, and west Texas Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Map Distribution Resource Type: Map Access & Availability: Loading
33. Maps showing gravity and aeromagnetic anomalies in the Butte 1⁰ x 2⁰ quadrangle, Montana Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Map Distribution Resource Type: Map Access & Availability: Loading
34. Maps showing gravity and aeromagnetic anomalies in the Dillon 1⁰ x 2⁰ quadrangle, Idaho and Montana Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Map Distribution Resource Type: Map Access & Availability: Loading
35. Maps showing growth of the lava dome at Mount St. Helens, Washington, 1980-1986 Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : [For sale by] U.S. Geological Survey, Information Services Resource Type: Map Access & Availability: Loading
36. Maps showing locations of mines and prospects in the Butte 1⁰ x 2⁰ quadrangle, western Montana Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Map Distribution Resource Type: Map Access & Availability: Loading
37. Maps showing metallic mineral districts and mines in the Black Hills, South Dakota and Wyoming Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by U.S. Geological Survey Information Services Resource Type: Map Access & Availability: Loading
38. Maps showing mineral resource assessment for copper and molybdenum in porphyry and stockwork deposits and for tungsten, iron, gold, copper, and silver in skarn deposits, Dillon 1⁰ x 2⁰ quadrangle, Idaho and Montana Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Map Distribution Resource Type: Map Access & Availability: Loading
39. Maps showing mineral resource assessment for placer gold and silver, Dillon 1⁰ x 2⁰ quadrangle, Idaho and Montana Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Map Distribution Resource Type: Map Access & Availability: Loading
40. Maps showing mineral resource assessment for vein and replacement deposits of base and precious metals, barite, and fluorspar, Dillon 1⁰ x 2⁰ quadrangle, Idaho and Montana Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Map Distribution Resource Type: Map Access & Availability: Loading