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22. Map showing the distribution, mineralogy, and geochemistry of hydrothermally altered rocks in the Reno 1⁰ x 2⁰ quadrangle, Nevada and California
23. Map showing the distribution of surficial sediments in Fishers Island Sound, New York, Connecticut, and Rhode Island
24. Maps and seismic profiles showing thickness and distribution of postglacial deposits beneath the southern two-thirds of Lake Michigan
25. Maps showing distribution, composition, and age of early and middle Cenozoic volcanic centers in Arizona, New Mexico, and west Texas
26. Maps showing gravity and aeromagnetic anomalies in the Butte 1⁰ x 2⁰ quadrangle, Montana
27. Maps showing gravity and aeromagnetic anomalies in the Dillon 1⁰ x 2⁰ quadrangle, Idaho and Montana
28. Maps showing growth of the lava dome at Mount St. Helens, Washington, 1980-1986
29. Maps showing metallic mineral districts and mines in the Black Hills, South Dakota and Wyoming
30. 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
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