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Volcanic hazards in the Pacific Northwest

Geoscience Canada

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Abstract

The Cascade Range stretches from southwestern British Columbia to northern California; the Range consists of major composite volcanic centres, most of which have been active during late Pleistocene and Holocene time. In addition, thousands of smaller basaltic or basaltic-andesite volcanoes have been active during the past few million years. Flowage and tephra hazards associated with future eruptions of composite volcanoes in the Range will endanger communities located within about 50 km of erupting volcanoes. Significant effects will extend to still greater distances downwind from the volcanoes and along stream valleys that head at the volcanoes. Volcanic-hazard assessments and hazard-zonation maps developed for volcanoes in the Range can be used by authorities for long-range land-use planning and provide information to help mitigate the effects of future eruptions. -Author

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Volcanic hazards in the Pacific Northwest
Series title:
Geoscience Canada
Volume
17
Issue:
3
Year Published:
1990
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Geoscience Canada
First page:
183
Last page:
187