Preliminary geologic and tectonic maps of Oregon east of the 121st meridian /

Bibliographic Details
Main Author:	Walker, George Walton, 1921-
Corporate Authors:	Geological Survey (U.S.), Oregon. Department of Geology and Mineral Industries
Format:	Government Document Map
Language:	English
Published:	[Washington, D.C.] : [United States Geological Survey], 1973.
Series:	Miscellaneous field studies map / United States Geological Survey ; MF-495.
Subjects:	Geology > Oregon > Maps. Geology, Structural > Maps.

Description
Item Description:	Explanation for both maps given on sheet 2. Cartographic material.
Physical Description:	2 maps ; 97 x 72 cm. and 45 x 36 cm.
Bibliography:	Includes bibliography.