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From the Fiery Furnace: Volcanoes and Their Roots
http://geomaps.wr.usgs.gov/parks/noca/nocageol8a.html
From DLESE Community Collection (DCC)
Comment on this resource
This resource explains the structure and composition of the landforms in the Northern Cascades. It gives the classification of the batholiths of the northern arc as well as describing and naming the arc-root plutons. The classification is based on the age of the structures and the site has information on both the original parts of the arc as well as the Mount Baker Volcano, which is thought to be one of the youngest members. Also at this site are links to information about multiple diapirs, which is a theory to explain how large intrusions can occur without major disruptions in the surface geography. Links are provided to another site, which discusses magmatic differentiation and differential melting along with the role of water incorporated at the zones of subduction.
Intended for grade levels:
  • High (9-12)
  • College (13-14)
  • College (15-16)
Type of resource:
  • Text:
    • Ref. material
Subject:
  • Geographical Sciences:
    • Physical geography
  • Geological Sciences:
    • Geology
    • Mineralogy or petrology
Technical requirements:
No specific technical requirements, just a browser required
Cost / Copyright:
No cost
Information presented on this website is considered public information (unless otherwise noted) and may be distributed or copied. Use of appropriate byline/photo/image credit is requested.
DLESE Catalog ID: DLESE-000-000-006-064
Educational standards:
  • National Science Education Standards (NSES):
    • 9-12:
      • D - Earth and space science:
        • Energy in the earth system
        • Origin and evolution of the earth system
  • National Geography Standards:
    • Physical systems:
      • The physical processes that shape the patterns of Earth's surface
    • The world in spatial terms:
      • How to use maps and other geographic representations, tools, and technologies to acquire, process, and report information
Resource contact / Creator / Publisher:
Publisher: United States Geological Survey Western Earth Surface Processes Team