- 1 Where was Glacial Lake Missoula?
- 2 What formed Glacial Lake Missoula?
- 3 What do enormous ripples in eastern Washington indicate about the Glacial Lake Missoula?
- 4 Does lake Missoula still exist?
- 5 How many times did Lake Missoula Flood?
- 6 How did Lake Bonneville disappear?
- 7 How many days did it take Glacial Lake Missoula to drain?
- 8 How long did Lake Agassiz exist?
- 9 Why did lake Missoula Flood?
- 10 What happened to Glacial Lake Missoula at the end of the last ice age?
- 11 How does a lake in Missoula MT relate to the Megafloods?
- 12 What evidence from Glacial Lake Missoula showed that the lake may have emptied suddenly?
- 13 When was the most recent ice age?
- 14 Which flood caused human error?
- 15 Where was the Missoula Flood ice dam?
Where was Glacial Lake Missoula?
Glacial Lake Missoula was a large prehistoric lake in Western Montana created by Ice Age flooding. Glacial Lake Missoula was a massive prehistoric lake in Western Montana created by the Cordilleran Ice Sheet creeping south, blocking and damming the Clark Fork River near present day Lake Pend Orielle.
What formed Glacial Lake Missoula?
Glacial Lake Missoula formed as the Cordilleran Ice Sheet dammed the Clark Fork River just as it entered Idaho. The rising water behind the glacial dam weakened it until water burst through in a catastrophic flood that raced across Idaho, Oregon, and Washington toward the Pacific Ocean.
What do enormous ripples in eastern Washington indicate about the Glacial Lake Missoula?
In 1942, Pardee published a paper suggesting that “giant ripple marks” with heights of 15-30 feet were evidence that deep and swift flowing currents had passed through the area near Paradise, Montana. Pardee attributed this phenomenon to the sudden failure of the ice dam that impounded Glacial Lake Missoula.
Does lake Missoula still exist?
The ice dam was over 2000 feet tall. Glacial Lake Missoula was as big as Lakes Erie and Ontario combined. Car-sized boulders embedded in ice floated some 500 miles; they can still be seen today!
How many times did Lake Missoula Flood?
It was the largest ice-dammed lake known to have occurred. The periodic rupturing of the ice dam resulted in the Missoula Floods – cataclysmic floods that swept across eastern Washington and down the Columbia River Gorge approximately 40 times during a 2,000 year period.
How did Lake Bonneville disappear?
As the Ice Age ended the climate became warmer and drier. With less rainfall and glacial melting to sustain Lake Bonneville, coupled with increased evaporation, the vast lake began to retreat. The current Great Salt Lake’s drainage area is roughly that of ancient Lake Bonneville.
How many days did it take Glacial Lake Missoula to drain?
The repeated filling and collapse of the ice dam would drain an inland sea the size of Lake Erie and Lake Ontario in two days. At its greatest extent, Glacial Lake Missoula stretched eastward a distance of some 200 miles. When the lake rose high enough, it burst through the ice dam.
How long did Lake Agassiz exist?
The history of Lake Agassiz in North Dakota covers approximately 2,700 years, from 11,700 years ago until 9,000 years ago.
Why did lake Missoula Flood?
These floods were the result of periodic sudden ruptures of the ice dam on the Clark Fork River that created Glacial Lake Missoula. After each ice dam rupture, the waters of the lake would rush down the Clark Fork and the Columbia River, flooding much of eastern Washington and the Willamette Valley in western Oregon.
What happened to Glacial Lake Missoula at the end of the last ice age?
At the end of the last Ice Age, about 18,000 to 15,000 years ago, an ice dam in northern Idaho created Glacial Lake Missoula in Montana. The ice dam burst and released flood waters across Washington and down the Columbia River back flooding into Oregon before eventually reaching the Pacific Ocean.
How does a lake in Missoula MT relate to the Megafloods?
Water in the Clark Fork ponded up behind an enormous ice dam from a lobe of the Cordilleran Ice Sheet, and reached a maximum depth of 600 meters as Glacial Lake Missoula.
What evidence from Glacial Lake Missoula showed that the lake may have emptied suddenly?
The marks were evidence that the ice dam holding back the water had failed suddenly, and Glacial Lake Missoula had drained rapidly. The ripple marks are up to 50 feet high and 500 feet apart.
When was the most recent ice age?
Striking during the time period known as the Pleistocene Epoch, this ice age started about 2.6 million years ago and lasted until roughly 11,000 years ago. Like all the others, the most recent ice age brought a series of glacial advances and retreats.
Which flood caused human error?
Question 72 out of 2 points Which flood was caused by human error? Selected Answer:The Teton Dam breach flood Answers:The Indian Ocean tsunamiThe Teton Dam breach flood The Big Thompson Canyon flood The Lake Missoula flood Question 82 out of 2 points Which flood was the result of an ice dam failure?
Where was the Missoula Flood ice dam?
Glacial Lake Missoula: At the end of the last Ice Age, a finger of the Cordilleran ice sheet crept southward into the Idaho panhandle, forming a large ice dam that blocked the mouth of the Clark Fork River, creating a massive lake 2,000 feet deep and containing more than 500 cubic miles of water.