|From the Fiery Furnace: Volcanoes and Their Roots|
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.
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DLESE Catalog ID: DLESE-000-000-006-064
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