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Igneous Rocks (granite and pegmatite)
Most of the bedrock on Bradbury Mountain is granite, or its coarse-grained variant, pegmatite. These are igneous rocks, which means that they formed from molten rock which cooled and solidified. These particular igneous rocks cooled slowly beneath the earth's surface, which allowed the individual mineral grains to grow large. These rocks formed hundreds of millions of years ago, and during the ensuing millennia the overlying rock has been eroded to expose these deep rocks at the surface.
The following photos show features related to the rock's igneous origin.
Last updated on September 3, 2008
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