Students found fire hearths, earth ovens, and building posts. Learn how your comment data is processed. Ensuing eruptions rebuilt the summit, filling the large collapse crater. Designed by Elegant Themes | Powered by The chemical composition of minerals and glasses provides clues about the depths, temperatures, volatile contents, and other factors present during their formation. Why does this matter? Smaller seasonal debris flows can also be caused by sudden outbursts of glacial water, by intense precipitation, or embankment failure. It is the only place you can stay. Visit the mountaineering and geology exhibit and watch the short film about the park. Through this research scientists know that Mount Rainier is not formed of the same material as Mount St. Helens, nor Mount Adams. When Martha, the daughter-in-law of James Longmire, the mountaineer and initiator of the park’s development, first saw this site, she exclaimed, “Oh, what a paradise!” The site found its name. A notorious example is the bulge that formed on the north flank of Mount St. Helens in April-May, 1980, preceding its explosive eruption. Mount Rainier is an episodically active composite volcano, also called a stratovolcano. Except in cases of force majeure, the roads allow you to reach the sites of Paradise and Crystal all year round (with chains if necessary). Lahars follow the unrelenting laws of physics, flowing downhill and filling river valleys. Mount Rainier is a type of volcano called a, While Mount Rainier’s last eruptive period was about 1,000 years ago, Mount Rainier is considered an active volcano and will have future eruptions. Its geologic history—which is the best predictor of future events—includes eruptions with ashfall (fine particles) and tephra (all sizes of rock and lava), some having occurred as recently as the mid-1800s. During an eruption 5,600 years ago the once-higher edifice of Mount Rainier collapsed to form a large crater open to the northeast much like that at Mount St. Helens after 1980. Please share your story tips by emailing Part of the flow poured west through present-day Buckley, eventually running out into Tacoma’s Commencement Bay, while another giant tongue of it flowed through today’s Kent and Auburn areas to fill in 60 square miles of Puget Sound. In an interesting side note, Green River Community College archaeology professor Gerald Hedlund oversaw digs from 1968 until the late 1970s at a Native American site two miles west of Enumclaw that had been overrun by the Osceola Mudflow. Yes, we live near an active volcano. But you cannot stop there! Skiers go down the slopes of Crystal, one of the biggest ski resorts near Seattle. Although Rainier and St. Helens are first cousins sitting just 50 miles apart on the spine of the Cascade Mountain Range, their volcanic tendencies differ. But relax—there’s good news! This is probably a good time for my disclaimer: I’m not a geologist. None has approached anything close to the magnitude of Mount St. Helens’ headlines-grabbing blow-ups. Please keep letters to 500 words or less. Yikes! Seismology is the study of earthquakes. One of the signs that Mount Rainier is still an active volcano is hydrothermal activity. Today Rainier is the primary objective of mountain enthusiasts. A notorious example is the bulge that formed on the north flank of Mount St. Helens in April-May, 1980, preceding its explosive eruption. The hotel, the Paradise Inn, built in 1916 in these beautiful surroundings, is a nice idea for a weekend getaway. Over the past half million years, Mount Rainier has erupted again and again, alternating between quiet lava-producing eruptions and explosive debris-producing eruptions. Mount Rainier’s hotter and more fluid magma flows longer distances but without such dramatic eruptions. The third sign Mount Rainier is a living volcano is the steam vents high on the upper slopes that emit hot gases and vapors. Mount Rainier boasts several vital signs of an active volcano. Jeff would love to hear from you about Mount Rainier. Mount Rainier was named Tahoma by the Native Americans. This is the type of question answered by petrology. Is Mount Rainier made up of the same stuff as Mount St. Helens? Post was not sent - check your email addresses! There are several ways that the volcanic activity of Mount Rainier is monitored: , or the changing shape of the volcano’s surface, can indicate movement of magma in the interior of the volcano. Summary. You can stop by the gift shop, the bookstore and, especially, the Visitor Center to enjoy the exhibits of the flora and fauna of the mountains and learn how these species survive in such a harsh and snowy environment. Considering the spectacular 1980 eruption of a neighboring active volcano, Mount St. Helens, you’d be forgiven a moment of panic and the urge to check the real estate market in Peoria (Arizona or Illinois) or Omaha, Nebraska.