Basalt Flows, Imnaha, Oregon
by William H. Mullins
Title
Basalt Flows, Imnaha, Oregon
Artist
William H. Mullins
Medium
Photograph - Photograph
Description
Columnar basalt formation near Imnaha, Oregon. Basalt is an extrusive igneous rock, which means it forms from the cooling of lava on the surface. Contraction of the lava as it cools leads to the geometry of the columns, which have either hexagonal or pentagonal cross-sections.
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August 24th, 2014
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