Hydrothermal Alteration in the Mount Hood Area, Oregon

Geological Survey (U.S.), Keith E. Bargar, Terry E. C. Keith, Melvin H. Beeson — 1993

A study of late Tertiary hydrothermal alteration corresponding to zeolite-facies to greenschist-facies metamorphism and Quaternary hydrothermal and fumarolic minerals from outcrops and geothermal drill holes near Mount Hood, Oregon.