| Sequence of pumiceous tephra layers and the late quaternary environmental record near mount st. Helens. | |
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MedLine Citation:
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PMID: 17797490 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
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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. |
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Authors:
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C J Heusser; L E Heusser |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Science (New York, N.Y.) Volume: 210 ISSN: 0036-8075 ISO Abbreviation: Science Publication Date: 1980 Nov |
Date Detail:
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Created Date: 2010-06-08 Completed Date: 2010-07-02 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0404511 Medline TA: Science Country: United States |
Other Details:
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Languages: eng Pagination: 1007-9 Citation Subset: - |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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