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Filtering by: Creator Crandell, Dwight Raymond, 1923- Degree Field Soil Science

Morphology, genesis, and classification of soils forming in recent age tephra deposits from Mt. St. Helens volcano

Creator:

Johnson, Mark E.

Abstract:

The morphology, genesis, and classification of soils forming in multiple tephra deposits of recent age from Mt. St. Helens volcano in southwestern Washington Cascade Mountains was studied. Soils which occupied well drained and poorly drained positions on the landscape were characterized according to their morphology and the results of analyses...

Resource Type:

Masters Thesis

Full Text:

(Crandell, 1965). During this time alpine glaciers in the Cascades had greatly decreased in size or disap
The effects of the Mazama tephra-falls : a geoarchaeological approach

Creator:

Matz, Stephan E.

Abstract:

About 7,000 years ago two major tephra-falls blanketed the Pacific Northwest in volcanic ash. These two tephra-falls, identified as the Llao and climatic tephra-falls, were a part of the eruptive events that led up to the collapse of Mount Mazama to form Crater Lake in the southern Oregon Cascades. The...

Resource Type:

Masters Thesis