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Mt. Rainier has granitic and basaltic lava types. It is a stratovolcano or composite volcano. The volcano has 26 major glaciers and 36 snowfields on it. Also, it has a glacier â¦ cave network, the world's largest, made from the heat from two volcanic craters.A relatively small crater lake sit on Mt. Rainier.t. Rainier is part of the Cascade Volcanic Arc, which extends from Northern California north into Canada. These types of volcanoes are most known for their explosive eruption types.
Speculation about when the Yellowstone volcano will next erupt, for instance, has raged for the better part of this year. Mount Rainier is the tallest volcano in the United States with a summit elevation of 14,411 feet. The most recent recorded eruption at Rainier was between 1820 and 1854, but some eyewitnesses reported eruptions as recent as 1894, according to author Stephen Harris (Mount Rainier: Americaâs Most Dangerous Volcano). The last major eruption was about 1,000 years ago. A sketch of Rainier erupting.