Sequence of Pumiceous Tephra Layers and the Late Quaternary Environmental Record Near Mount St. Helens
- 28 November 1980
- journal article
- research article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 210 (4473) , 1007-1009
- https://doi.org/10.1126/science.210.4473.1007
Abstract
Tephra in lake beds within 40 kilometers of Mount St. Helens was deposited an average of once every 2,700 years over the past 35,000 years, for a total of 13 layers. Times of deposition span the period of the Fraser Glaciation and intervals before and after it, and include the series of climates prevailing when vegetation west of the Cascade Range shifted between a park-tundra type and the modern western hemlock forest.This publication has 16 references indexed in Scilit:
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