Geologic studies in Alaska by the U.S. Geological Survey, 1995

Abstract

SurveyCover.Redoubt, a massive snow-and ice-covered 10,200-ft-high volcano located 105 miles southwest of Anchorage, has erupted three times in the past 100 years (1902,.The last eruption was characterized by repeated episodes of lava-dome growth and subsequent destruction.The resulting pyroclastic flows mixed with ice and snow to create massive lahars, several of which completely inundated the 1-mile-wide Drift River valley and flowed 25 miles to enter the sea.The largest flows-comparable to the average discharge of the Mississippi River-swept past and through the Drift River Oil Terminal, threatening the oil storage and loading facility.View is of north flank.