Map showing distribution, composition, and age of Late Cenozoic volcanic centers in Idaho, western Montana, west-central South Dakota, and northwestern Wyoming
- by Robert G. Luedke and Robert L. Smith.
- Reston, Va. : U.S. Geological Survey, 1983.
- Physical description
- 6 maps on 2 sheets : col. ; 89 x 107 cm., or smaller, folded in envelope 30 x 24 cm.
- Miscellaneous investigations series (Geological Survey (U.S.)) ; map I-1091-E.
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