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Topic: Lake Missoula


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In the News (Sat 28 Nov 09)

  
  CVO Website - Glacial Lake Missoula
Glacial Lake Missoula, an immense water body dammed in the upper Clark Fork valley by the Purcell Trench lobe, was the source of floodwater that catastrophically swept across the Channeled Scabland (Bretz, et.al., 1956; see also Baker, 1982).
Lake Missoula shorelines etched across the sharp Fraser-age terminal moraines of alpine glaciers that flowed from mountains on the east side of the lake (Alden, 1953; 197-13) similarly indicate that the alpine-glacial maximum there occurred before or during the higher stands of the lake.
Because the lake was ponded near the terminus of the Purcell Trench lobe, the long interval of ponding implies that the lobe maintained its near-maximal position for millennia.
vulcan.wr.usgs.gov /Glossary/Glaciers/IceSheets/description_lake_missoula.html   (4100 words)

  
 Field Trip to Mars - Kids - Glacial Lake Missoula
In the rugged terrain outside of Missoula, Montana, are clues indicating that sometime in the last 10,000 years or so an enormous lake filled the valleys of western Montana.
On the hills around Missoula are numerous straight, horizontal ledges called "lap marks" that mark the shorelines as the level of the lake filled to different heights and drained.
Glacial Lake Spokane and Glacial Lake Missoula are indicated on the map (above) in medium blue.
www.kidscosmos.org /kid-stuff/kids-lk-missoula.html   (787 words)

  
 Missoula Floods - Wikipedia, the free encyclopedia
Glacial Lake Columbia (west) and Glacial Lake Missoula (east) are shown south of Cordilleran Ice Sheet.
The Missoula Floods (also known as the Spokane Floods or the Bretz Floods) refer to the cataclysmic floods that swept periodically across eastern Washington and down the Columbia River Gorge at the end of the last ice age.
Bretz, however was not able to explain the source of the huge volume of water and his hypothesis was controversial, partly due to the popularity at that time of the principle of uniformitarianism in geologic processes.
en.wikipedia.org /wiki/Missoula_Floods   (640 words)

  
 Lake Missoula: Spokane to Missoula
Lake Coeur d'Alene is dammed by Missoula flood deposits while Lake Pend Oreille and Flathead Lake are dammed by moraines.
Scablands carved by the overflow of Lake Columbia are shown in light brown.
The hill with the L and the large castle-like marking (the result of weed eradication, not any intentional design) is Mount Jumbo north of I-90, and the hill with the M is Mount Sentinel, south of I-90.
www.uwsp.edu /geo/projects/geoweb/participants/dutch/VTrips/LMissoula1.HTM   (1009 words)

  
 Sandpoint.com - Glacial Lake, Sandpoint Idaho
Around the lake there was sparse vegetation growing among the windblown sand dunes through which greenish-gray rivers cut.
The lake was growing at all times and covered an area the size of Lake Erie and Lake Ontario combined.
Nothing, on the surface, gave any indication as to what was going to transpire at the lake over 12,000 years ago, but at the base a small stream of water flowed from the ice.
www.sandpoint.com /Community/GlacialLake.asp   (681 words)

  
 Lewis and Clark's Columbia River - Missoula Floods
When Lake Missoula burst through the ice dam and exploded downstream, it did so at a rate 10 times the combined flow of all the rivers of the world.
The Missoula Flood waters passing Wallula Gap reached an elevation of about 1,200 feet, as evidenced by glacial erratics that were left stranded on the slopes of the Horse Heaven Hills and other nearby ridges.
This lake filled the Willamette River Valley as far as Eugene, Oregon, over 100 miles away, with a measured height of 400 feet at Oregon City and an estimated height of 380 feet at Eugene.
englishriverwebsite.com /LewisClarkColumbiaRiver/Regions/Places/missoula_floods.html   (1504 words)

  
 The Lake Bonneville Flood
The release of water from Lake Bonneville was apparently initiated by sudden erosion of unconsolidated material on the northern shoreline near Red Rock Pass.
When the ice dam failed that contained impounded Lake Missoula, 500 cubic miles of water were suddenly released.
Blue Lakes alcove, Devils Washbowl and Devils Corral are alcoves along the north canyon rim of the Snake River several miles north of Twin Falls.
imnh.isu.edu /digitalatlas/hydr/lkbflood/lbf.htm   (1512 words)

  
 The Daily Inter Lake
The Flathead Lake cores also display regular, even layers of light and dark sediments, called "varves," that are commonly found in glacial lakes.
There's also evidence that the youngest flood deposits post-date Lake Missoula by several thousand years, based on estimates that the lake existed from about 19,200 to 16,000 years ago, compared to an age range of 19,095 to 13,695 for the various flood deposits.
However, testing the hypothesis that Glacial Lake Missoula was the sole source of the ice age floods hasn't been the main focus of Hendrix's research, or for his students, whom he credits with doing much of the "heavy lifting" and detailed sediment analysis.
www.dailyinterlake.com /articles/2004/11/07/news/news01.txt   (1246 words)

  
 Glacial Lake Missoula
When Glacial Lake Missoula was at its maximum capacity a failure in the ice dam would result in a catastrophic event.
When the ice dam was breached water would have burst out of Glacial Lake Missoula with 10 times the combined force of all the current rivers in the world.
Since a flood with the magnitude of the Lake Missoula flood had not been witnessed in recorded history it was simply just not a rationale explanation in the eyes of most geologists at the time.
www.emporia.edu /earthsci/student/pepper2/missoula.html   (1368 words)

  
 IR // News // Glacial Lake Missoula story continues to captivate the imagination   (Site not responding. Last check: 2007-10-14)
The tour was sponsored by the Glacial Lake Missoula chapter of the Ice Age Floods Institute, a nonprofit group established about four years ago to help promote the story of the largest catastrophic floods on Earth.
The lake grew slowly, fed by meltwater from dozens of glaciers, including the huge rivers of ice that filled the Flathead and Swan valleys, and smaller glaciers in the Bitterroot and Mission Mountains.
In effect, Glacial Lake Missoula was a 160 trillion-gallon hydraulic cannon with a glacier cork in its nozzle.
www.helenair.com /articles/2003/05/07/breaking/latest0004.txt   (1188 words)

  
 Glacial Lake Missoula and the Ice Age Floods
The floodwaters from Glacial Lake Missoula moved through eastern Washington on a 430-mile journey to the Pacific Ocean, forever changing the landscape by stripping away topsoil, and picking apart the bedrock.
He estimated the lake covered nearly 2,900 cubic miles and held 500 cubic miles of water at its maximum extent.
Pardee attributed this phenomenon to the sudden failure of the ice dam that impounded Glacial Lake Missoula.
www.glaciallakemissoula.org /story.html   (978 words)

  
 Glacial Lake Missoula
The formation of Lake Missoula and its resulting giant floods over Washington and Oregon is considered by many to be one of the most unique geological phenomena to date.
Between 13 and 15 thousand years ago, a huge lake held back by a glacial dam in the Idaho panhandle covered a large area of what is now western Montana.
At its largest volume, Glacial Lake Missoula held over 520 cubic miles of water, covered over 3,000 square miles, and was over 2,000 feet deep at the edge of the glacial dam.
geology.wcedu.pima.edu /~lfuhrig/lakemissoula.html   (467 words)

  
 NOVA | Mystery of the Megaflood | Ice Age Lake | PBS
Glacial Lake Missoula surely became a splendid and brilliant greenish blue as the last of the summer rock flour settled and the larch trees blazed yellow in the deepening chill of the coming winter.
Only the parts of Glacial Lake Missoula that submerged the lower ends of glaciers could have launched icebergs, and those places were few.
David Alt, a geology professor emeritus at the University of Montana in Missoula, is author of Glacial Lake Missoula and Its Humongous Floods (Mountain Press Publishing Co., 2001), from which this article was excerpted with kind permission of the author and the publisher.
www.pbs.org /wgbh/nova/megaflood/lake.html   (1388 words)

  
 Seeley Lake, Montana - Chamber of Commerce   (Site not responding. Last check: 2007-10-14)
Seeley Lake is the regional center of a large area offering abundant recreational opportunities.
Seeley Lake is nestled between the Bob Marshall and the Mission Mountain Wilderness Areas.
We call Seeley Lake's annual celebration of winter "Winterfest." It is the last two weekends in January of each year and is Montana's premier winter recreation event.
www.seeleylakechamber.com   (935 words)

  
 Glacial Lake Missoula: Book Review of Glacial Lake Missoula and its Humongous Floods
Known as Glacial Lake Missoula, it covered an area over 2,900 square miles, and was nearly 2,000 feet deep at its deepest point by the ice dam.
As the lake filled with water, the water was able to eventually float the dam, releasing a catastrophic flood.
Glacial Lake Missoula and its Humongous Floods takes the reader on a journey examining the lake from its source in the valleys of Montana, and down the path of its flood to the coast at the mouth of the Columbia River.
www.suite101.com /article.cfm/13061/94297   (508 words)

  
 Ancient Seas, Modern Images
Another ancient lake that experienced an abrupt and catastrophic end was Lake Missoula, located in the vicinity of the modern city of Missoula, Montana.
Unlike Lake Bonneville, however, Lake Missoula occurred due to glacial meltwaters, and was formed due to a dam of ice which formed and broke repeatedly.
The evidence of the immense floods from Lake Missoula is clearly visible in the region known as the "Channeled Scablands", shown in the image above.
daac.gsfc.nasa.gov /oceancolor/scifocus/oceanColor/ancient_seas.shtml   (1118 words)

  
 Lake Missoula: Missoula to Thompson Falls
The best view of laminated Lake Missoula silt along U.S. 93 is unfortunately in a road cut along a notoriously unsafe highway with narrow or no shoulders.
The south end of the lake is dammed by the Polson moraine.
The outlet at Lake Pend Oreille was quite wide and perhaps dropped lake levels rapidly enough to cause high speed flow in constrictions.
www.uwsp.edu /geo/projects/geoweb/participants/dutch/VTrips/LMissoula2.HTM   (871 words)

  
 Montana Earth Science Picture of the Week
One of the most fascinating events of the last ice age was a series of cataclysmic floods associated with Glacial Lake Missoula.
When the Lake Missoula was at its highest, the water was about 2,000 feet deep and contained about as much water as Lake Erie.
The lake extended as far south as Drummond in the Clark Fork Valley and Darby in the Bitterroot Valley.
formontana.net /shores.html   (485 words)

  
 Only One Lake Missoula Flood
The Lake Missoula Flood was one of the largest floods in earth history, the Genesis Flood being the largest, by far.
The Lake Missoula Flood and other melting pulses from the Cordilleran Ice Sheet to the north swept a large area of Washington (after Waitt).
The Lake Missoula Flood is believed by some geologists to have carved out the Grand Coulee and Dry Falls in north central Washington.
nwcreation.net /articles/missoulaflood.htm   (2154 words)

  
 Research View | A Publication of The University of Montana
But when Hendrix says that Glacial Lake Missoula may not have been the primary source of water that created eastern Washington’s channeled scablands, the shock in the room is palpable.
The institute’s Glacial Lake Missoula Chapter is hosting the meeting in a St. Patrick Hospital conference room.
Flathead Lake, he explains, was right on the boundary of the Cordilleran Ice Sheet — the massive block of ice that covered most of British Columbia — at the end of the last ice age.
www.umt.edu /urelations/rview/spring05/core.htm   (1217 words)

  
 Vision 2003 | Research and Scholarship at The University of Montana-Missoula
In Missoula, a glimpse of ancient shoreline on a mountainside is all it takes to yank us out of, say, a traffic-induced coma into the sudden sensation of being at the bottom of a 1,000-foot deep lake.
Many believe that the ice dams holding back Lake Missoula failed catastrophically at the end of each period of lake formation and that the following floods were responsible for carving the channeled scablands in eastern Washington.
Some geologists believe that Lake Missoula existed once and went away slowly and that the channeled scablands were formed by other flood mechanisms larger than what Lake Missoula could have produced.
www.umt.edu /urelations/vision/2003/28glacial.htm   (1681 words)

  
 para&proglacial
Pluvial lakes are ancient lakes of great size that formed in closed basins (like the bolsons of the American Southwest) as a consequence of glacial climates and the surplus of available moisture over evaporation and transpiration.
Evidence of the fluctuating lake level still exists on valley walls above and around Missoula, MT (fig 2.) Shorelines from the ancient lake mark the hillsides in a series of parallel, horizontal bands.
The water draining out of Lake Missoula, commonly known as the Spokane Floods, rushed down the Clark Fork River, flowed into the Columbia River in central Washington, and eventually emptied into the Pacific Ocean (fig 1).
www.homepage.montana.edu /~geol445/hyperglac/propara1   (1146 words)

  
 Missoula Montana Tourist Attractions and Travel Information - Confluence Whitewater Rafting 2006
Missoula, Montana is a Mecca for outdoor enthusiasts with adventures from leisurely to wild.
A Carousel for Missoula located at Caras Park www.carrousel.com 406-549-838 The carousel is one of the first fully hand-carved carousels to be built since the Great Depression and carved entirely by volunteers.
Historical Museum at Fort Missoula on Reserve St. and South St. www.fortmissoulamuseum.org 406-728-3476 Established in 1877 this was one of Montana’s first military posts and has preserved 13 historic structures.
www.confluencerafting.com /attractions.htm   (896 words)

  
 The story that won’t be told
Shorelines of glacial Lake Missoula along the eastern hills of the Little Bitterroot Valley, 75 miles northwest of Missoula, Montana.
This will only be part of the story.  They will not tell the public all the assumptions and problems associated with their dates.  They likely will not let the public in on the dispute over the number of floods, and that some uniformitarian geologists advocate only one large Lake Missoula flood.
It is surely doubtful the signs will reveal that the flood rhythmites, repeating layers of sand and silt over 100 feet thick, formed in side canyons in several days.  Sediments like these rhythmites would normally be assumed to have been laid down in hundreds of thousand, if not millions of years.
www.answersingenesis.org /docs2003/1209missoula.asp   (502 words)

  
 Missoula Electric Cooperative Inc. - Board of Trustees
The Missoula Electric Cooperative is divided into seven districts each with a representative on the Board of Trustees.
The Missoula Electric Cooperative's regular board meeting is the third Tuesday of each month.
General area described as all area north of Interstate 90 from the Ninemile Interchange on the west to the Gooden Keil subdivision on the east and bounded on the north by the Missoula/Mineral county line.
www.missoulaelectric.com /pages/board.html   (846 words)

  
 Ice Age Floods Institute: How was the geologic puzzle solved?
Earlier, in 1910, another geologist, Joseph T. Pardee, had described evidence of a great ice dammed lake, Glacial Lake Missoula, that had formed during the Ice Age in northwestern Montana.
Then, in 1940, Pardee reported on his discovery of giant ripple marks, 50 feet high and 200-500 feet apart, that had formed on the floor of Glacial Lake Missoula.
These huge, current-related features, along with other newly-found landforms, dramatically confirmed that the lake had suddenly emptied to the west, unleashing the tremendously powerful erosive forces that shaped many of the landforms found in the Columbia Basin.
www.iceagefloodsinstitute.org /aboutfloods/puzzlesolved.html   (318 words)

  
 Glacial Lake Missoula and the Ice Age Floods
Glacial Lake Missoula and the Ice Age Floods
The impact from Glacial Lake Missoula and the Missoula floods can be seen in parts of Montana, Idaho, Washington, and Oregon.
Testifying to the cataclysm are the ancient shorelines, ripple marks, scoured lakes, dry channels, falls, and flood debris that are still visible after nearly 12,000 years.
www.glaciallakemissoula.org /virtualtour   (70 words)

  
 Missoulian - Friday, November 7, 2003; Harold 'Bud' Lake, John Yochim, Helen Elizabeth Chesmore Lebert, Ralph ...
MISSOULA - Montana is a little less Western with the passing of Missoula icon Harold "Bud" Lake on Tuesday, Nov. 4, 2003.
He was preceded in death by his wife, Mary; a sister, Madeline Clark, of Maywood, Mo.; a brother, Paul Lake of Missoula; and an infant grandson, Patrick Justin of Missoula.
MISSOULA - Helen M. Tremper, a well-known state golf legend of Missoula, passed away at her home Oct. 29, 2003, of natural causes.
www.missoulian.com /articles/2003/11/08/obits/obits6.txt   (2610 words)

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