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Mount Rainier [note 1] (/ r eɪ ˈ n ɪər / ray-NEER), also known as Tahoma, is a large active stratovolcano in the Cascade Range of the Pacific Northwest in the United States. The mountain is located in Mount Rainier National Park about 59 miles (95 km) south-southeast of Seattle. [9]
7 lis 2023 · Eruption rates waned gradually after 160,000 years ago, and erosion removed much of the upper north and south flanks reducing the summit elevation. At the start of this phase, dikes and vents on the upper east side of the volcano feed the lava flows that constructed Little Tahoma Peak.
It last erupted in 1894-95, when small summit explosions were reported by observers in Seattle and Tacoma. Mount Rainier's next eruption might be of similar or larger size and could produce volcanic ash, lava flows, and avalanches of intensely hot rock and volcanic gases, called "pyroclastic flows."
7 lis 2023 · The Eruption History of Mount Rainier. Timeline of eruptions at Mount Rainier. By. Cascades Volcano Observatory, Mount Rainier. November 6, 2023. Holocene, or Post-Glacial, Eruptions of Mount Rainier. We know more about the recent volcanism at Mount Rainier because deposits postdate extensive glaciation and therefore are well preserved. By.
Glacier-clad Mount Rainier, seen here from the NW, is located in the northern Cascade Range. Most eruptions originate from a central conduit, which produces the common conical profile of stratovolcanoes, but flank eruptions also occur. Both isolated stratovolcanoes like Mount Rainier and compound volcanoes formed by overlapping cones are common.
8 lis 2023 · Mount Rainier is an active volcano of the Cascade Range in Washington State, 50-70 km (30-44 mi) southeast of the Seattle–Tacoma metropolitan area. Volcanism occurs at Mount Rainier and other Cascades arc volcanoes because of the subduction of the Juan de Fuca Plate off the western coast of North America.
The largest known explosive eruption of Mount Rainier occurred between about 30,000 and 100,000 years ago and is recorded by a pumice deposit that has been recognized northeast, east, and southeast of the volcano.
