USGS/Cascades Volcano Observatory, Vancouver, Washington
REPORT:
Upper Pleistocene Pyroclastic-Flow Deposits and Lahars South of Mount St. Helens
Volcano, Washington
--
Jack H. Hyde, 1975,
Upper Pleistocene Pyroclastic-Flow Deposits and Lahars South of Mount St. Helens
Volcano, Washington:
U.S. Geological Survey Bulletin 1383-B, 20p.
Table of Contents
-
Abstract
- Introduction
- Terminology
- Tephra
-
Glacier Extents During Swift Creek Time
- Description of the Swift Creek Assemblage
- Older part of the Swift Creek Assemblage
- Younger part of the Swift Creek Assemblage
- Character of Volcanic Eruptions
- Effect of Volcanism on the Lewis River Valley
- References Cited
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02/27/01, Lyn Topinka