Lahars Volcanic Mudflows

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=1PxgDLaLleE

Volcanic Mudflows known as lahars are prominent near Interstate 90 at Thorp, Washington. Mount Rainier produced the famous Oceola Mudflow - 5,600 years ago - that flowed as far north as Seattle. But the white cliffs near Thorp are 10 million-year-old lahars from an extinct volcano that once stood in the William O. Douglas Wilderness west of Yakima, Washington. • The Cascade Range in Washington State has a rich history of volcanic eruptions going back 40 million years. Today’s stratovolcanoes like Mount Saint Helens, Mount Rainier, and Mount Hood are very young volcanoes - less than a million years old. But volcanic mudflow deposits like those featured in this video are much older than our current composite cones. The deposits have long outlived their source. • Tom Foster (http://HUGEfloods.com) and Nick Zentner (Central Washington University) have been hiking together in eastern Washington for years. ‘Lahars at Thorp’ is part of an “I-90 Rocks” video series.

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