Mt. Rainier has andesitic lava flow
Comptons U-V. N.p.: Encyclopedia Britticannica, Inc, n.d. (hard copy)
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At 4392 meters tall ( 14410 feet) Mt. Rainier is the highest volcano in the cascade range. It is also the third most voluminous. Mt. Rainier is a stratovolcano. This means that it has steep sides and symmetrical cones built by alternating lava flows, ash, and cinder. Mt. Rainier's summit is built by two overlapping craters, each about a quarter-mile in diameter.
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