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Near the end of the last Ice Age, a lobe of the Cordilleran ice sheet over 40 miles wide and 3000 feet thick covered this area. It blocked the Clark Fork River, impounding over 500 cubic miles of water in a huge Glacial Lake Missoula covering much of western Montana.
When the lake reached about 2000 feet deep, the pressure of the water against the ice broke down the dam, releasing the lake water and icebergs from the broken dam in a huge Ice Age Flood that drained away in only a few days time.
This cycle repeated 40-100 times over a 5000 year period as the advancing ice lobe dammed the lake and subsequently collapsed again and again.
IAFI’s Coeur du Deluge Chapter serves the greater Sandpoint, Idaho area.
For more information about our chapter,
e-mail Julie Bishop.
For Ice Age Floods and Geology questions and information, email Mark Pullen, our Chapter technical expert.
President
Tony Lewis
Secretary/Treasurer
Julie Bishop
Technical Expert
Mark Pullen
We’re reaching out to ask for your help. As we work toward our mission of promoting public awareness and education
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Ice Age Floods Institute is a registered non-profit educational organization devoted to publicly sharing the ice age floods story.
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Ice Age Floods Institute is a 501(c)(3) tax-exempt non-profit EIN 91-1658221
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