When Glacial Lake Missoula's ice dam shattered, a northern arm of the lake drained in a matter of hours through a narrow gap in Montana's Blackfoot River valley. One can only imagine the ...

Fifteen thousand years ago, during the last Ice Age, a glacial dam collapsed in what is now northern Idaho, releasing the waters of a giant inland sea known as Lake Missoula. Five hundred cubic ...

The great continental ice sheets were melting very fast in the time of Glacial Lake Missoula, shedding great torrents of meltwater every summer, raising sea level an average of approximately 100 ...

Glacial Lake Missoula was metastable and its ice dam released episodic megafloods, whereas glacial Lake Columbia was stable and did not drain through its ice dam. Undergraduate research assistant ...

Oregon is a great place for geology geeks. Enormous lava flows, Ice Age megafloods, massive volcanic eruptions —we bear ...