Includes 10 colorful diagrams showing the origin of igneous rocks, worldwide distribution of volcanoes, map of the Cascade volcanoes, map of the great batholiths of the western USA, cross sections of volcanoes and evolution of a composite volcano. Also exposed igneous rockforms, surface and satellite images showing batholiths, stocks, dikes, sills, volcanic necks, basalt flows and columns.
Copyright 1999 by Pan Terra Inc., PO Box 556, Hill City, SD, USA 57745.
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