Zoning Characteristics of the Devine Canyon Tuff, an Extremely Widespread High-silica Rhyolite Ash-flow Tuff: Constraints for Rhyolite Evolution Models

Shelby L Isom1, Erik Shafer1 and Martin J Streck2, (1)Portland State University, Portland, OR, United States, (2)Portland State University, Geology, Portland, OR, United States