Griggs, A.B.; Swanson, D.A.

The Columbia river basalt group in the Spokane Quadrangle, Washington, Idaho, and Montana; Bulletin 1413

Washington: United States Government Printing Office, 1976. red cloth, 9.25" x 6", plate 1 inside rear pocket, 39 pages, library stamps. very good. Item #5568019

from the abstract "The Columbia River Basalt Group underlies most of the western half of the 6,400 miles of the Spokane 1º x 2º quadrangle and forms the northeast corner of the Columbia Plateau. Of its two formations, The Picture Gorge Basalt and the overlying Yakima Basalt only the Yakima is exposed in the quadrangle." DU2.

Price: $20.00