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Dolomite Rock, Wyoming

Picture Gallery of Limestones


This roadcut near Hartville exposes Archean dolomite, over 2.5 billion years old. Dolomite is often pink and recrystallized, obscuring its sedimentary features.
Old but still hard

Wildcat Hills Formation, near Hartville, WY

Photo (c) 2010 Andrew Alden, licensed to About.com (fair use policy)
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