The island of Hawaii has the largest volcano on earth, Mauna Loa which accounts for its growing size. Before the Sierra Nevada’s were uplifted from earthquakes and shaped by glaciers there was metamorphic rock that sat at the surface. The park contains many different kinds of volcanic rock, quartz, and marble which are rocks that are created by metamorphic rocks. These rocks help create many of the parks beautiful rock formations and underground caves. If the Sierra Nevada’s had not gone through different periods of freezing cold glaciers and hot volcanic rock then the Sierra Nevada Mountains might have never had the beautiful topography it has today.
Information from: http://www.sequoia.national-park.com/info.htm
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