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GEOLOGIC FEATURES SLIDE COLLECTIONS VOLCANISM List price: $75/set From the collections of John Shelton, Ken Hamblin, Dave Rahm, and Don Easterbrook,

VOLCANISM SET I: 50 color photos of volcanoes features including erupting volcanoes, stratovolcanic cones, cinder cones, glass domes and flows, banded obsidian, Crater Lake caldera, Mt. St. Helens, mudflows, Bishop tuff pyroclastic flow, pillow lavas, columnar basalt, volcanic bombs, inverted topographic on lava flows.

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