Cataclysms on the Columbia, the Great Missoula Floods
Department of Geology
Portland State University
One of the greatest set of geological events to ever have occurred in North America was given the name, the Missoula Floods. The floods originated when an ice dam broke in upper Idaho liberating waters impounded in back of it in Montana, scouring out large sections of eastern Washington and the lower Columbia River drainage basin. The talk will focus on the incredible story...