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Filtering by: Alternative title ssim Mount St. Helens volcano : recent and future behavior Creator Callaghan, Eugene, 1904 Decade 1930-1939

Metalliferous mineral deposits of the Cascade range in Oregon, by Eugene Callaghan and A. F. Buddington. Prepared in cooperation with the State mining board of Oregon

Creator:

Callaghan, Eugene, 1904-, Buddington, A. F. (Arthur Francis), 1890-, and Oregon. State Mining Board

Abstract:

This report deals with a group of mineralized areas containing Tertiary veins of base metal and gold,· which occur at intervals throughout the Cascade Range in Oregon. Gold was discovered in this region in 1858, only a few years after its discovery in southwestern Oregon, and an output of nearly...

Resource Type:

Book

Full Text:

arrangement_____________________________________ 48 Hydrothermal and supergene alteration of wall rock_______ 49 Future of the district_ __