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Pacific Mountain System
This web page guides the user through the Pacific Mountain System geologic province, one of the most geologically young and tectonically active in North America. The generally rugged, mountainous landscape of this province, which includes parts of Washington, Oregon, and California, provides evidence of ongoing mountain-building. One map shows the plate tectonic setting of the Pacific Mountain System which straddles the boundaries between several of Earth's moving plates. This province includes the active volcanoes of the Cascade Range and the young, steep mountains of the Pacific Border and the Sierra Nevada. The user can find out more with links to USGS Cascades Volcano Observatory, Seattle region earthquake hazards, or North Cascades National Park geology. Links are provided to a simple shaded relief map and to several other shaded relief maps including ones with National Park locations and with major and subprovince boundaries. Image gallery links are given to several national parks sites: Lassen Volcanic National Park, Yosemite National Park, and North Cascades National Park.
Intended for grade levels:
  • General public
Type of resource:
  • Visual:
    • Map
    • Photograph
  • Text:
    • Ref. material
Subject:
  • Geographical Sciences:
    • Physical geography
  • Geological Sciences:
    • Structural geology
Technical requirements:
No specific technical requirements, just a browser required
Cost / Copyright:
No cost
Information presented on this website is considered public information and may be distributed or copied. Use of appropriate byline/photo/image credit is requested.
DLESE Catalog ID: DLESE-000-000-000-479
Resource contact / Creator / Publisher:
Publisher: United States Geological Survey
Western Earth Surface Processes Team


Contact: Phil Stoffer
Western Earth Surface Processes Team
United States Geological Society (USGS)