title: Titanium Dioxide in Pyroclastic Layers from Volcanoes in the Cascad Range.
abstract: Rapid determinations of titanium dioxide have been made by x-ray emission techniques to evaluate the potentiality of using the TiO(2) content of samples for checking field correlations and assisting in identification of pyroclastic units from Cascade volcanoes. Preliminary data suggest that the two most wide-spread units have characteristic ranges of TiO(2) content and that other, less extensive layers have ranges which, though characteristic, often overlap the ranges of the more widespread layers. Relative to fresh samples,. weathered samples from B and C soil horizons are enriched in TiO(2).
authors.forename: G K
authors.initials: GK
authors.lastname: Czamanske
authors.forename: S C
authors.initials: SC
authors.lastname: Porter