Geologic map of Oregon east of the 121st meridian [document cartographique imprimé] / G.W. Walker, Auteur ; United States. Geological Survey, Editeur scientifique ; Oregon. Dept. of Geology and Mineral Industries, Editeur scientifique . - Reston, Va. ; Denver, Colo : U.S. Geological Survey, 1977 . - 1 map : col. ; 89 x 69 cm., on sheet 108 x 110 cm. + 1 sheet (118 x 104 cm.). - ( Miscellaneous Investigations Series; MAP I-902) . ISSN : PPN 032924763 Scale : 1:500,000 ; (W 121--W11645?/N 46--N 42)
Geology mapped in 1959-73. - Marginal maps: Tectonic map, Index map, and Geomorphic division of Oregon. Langues : Anglais ( eng) |
Geologic map of Oregon east of the 121st meridian (1977)