adelmosa2007 adelmosa2007

08-10-2019
Social Studies

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How did lava flows help from the Columbia platfau

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08-10-2019

When pressure on the mantle is released as it is forced up through the crust due to subduction, it becomes basaltic magma. The Columbia River has eroded deep into the lava flows of the Columbia Plateau, revealing layers of columnar jointed basalt

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