publication . Article . 2002

Fumaroles in ice caves on the summit of Mount Rainier—preliminary stable isotope, gas, and geochemical studies

D.R. Zimbelman; Robert O. Rye; G.P. Landis;
Open Access
  • Published: 25 Jul 2002
Abstract
Abstract The edifice of Mount Rainier, an active stratovolcano, has episodically collapsed leading to major debris flows. The largest debris flows are related to argillically altered rock which leave areas of the edifice prone to failure. The argillic alteration results from the neutralization of acidic magmatic gases that condense in a meteoric water hydrothermal system fed by the melting of a thick mantle of glacial ice. Two craters atop a 2000-year-old cone on the summit of the volcano contain the world's largest volcanic ice-cave system. In the spring of 1997 two active fumaroles (T=62°C) in the caves were sampled for stable isotopic, gas, and geochemical st...
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Subjects
free text keywords: Geochemistry and Petrology, Geophysics, Volcano, geography.geographical_feature_category, geography, Geology, Argillic alteration, Mount Rainier, Fumarole, δ18O, Stratovolcano, Hydrothermal circulation, Meteoric water, Geochemistry, Mineralogy
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