HOME

TheInfoList



Click Here for Items Related To - Lake Chouteau
OR:
Lake Chouteau on:   [Wikipedia]   [Google]   [Amazon]

Lake Chouteau was a
glacial lake A glacial lake is a body of water with origins from glacier activity. They are formed when a glacier erodes the land and then melts, filling the depression created by the glacier. Formation Near the end of the last glacial period, roughly 10,0 ...
formed during the late
Pleistocene The Pleistocene ( , often referred to as the ''Ice age'') is the geological Epoch (geology), epoch that lasted from about 2,580,000 to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was fina ...
along the Teton River. After the
Laurentide Ice Sheet The Laurentide Ice Sheet was a massive sheet of ice that covered millions of square miles, including most of Canada and a large portion of the Northern United States, multiple times during the Quaternary glacial epochs, from 2.58 million years a ...
retreated, water melting off the glacier accumulated between the
Rocky Mountains The Rocky Mountains, also known as the Rockies, are a major mountain range and the largest mountain system in North America. The Rocky Mountains stretch in straight-line distance from the northernmost part of western Canada, to New Mexico in ...
and the ice sheet. The lake drained along the front of the ice sheet, eastward towards the Judith River and the Missouri River. The maximum advance of the Laurentide Ice Sheet blocked the drainages of north- and east-flowing rivers, forming glacial lakes along the margin of the ice. On the western Montana plains the Shelby lobe blocked the ilk_River,_creating_glacial_Lake_Twin_River._Tributaries_of_the_Marias_River_were_also_blocked_by_the_Shelby_lobe,_leading_to_the_formation_of_glacial_lakes_ ilk_River,_creating_glacial_Lake_Twin_River._Tributaries_of_the_Marias_River_were_also_blocked_by_the_Shelby_lobe,_leading_to_the_formation_of_glacial_lakes_Lake_Cut_Bank">Cutbank_ ''CutBank''_is_a_literary_journal_that_is_affiliated_with_the_University_of_Montana's_creative_writing_program._The_journal_was_founded_in_1973_with_the_help_of_William_Kittredge_among_others._It_is_the_third_incarnation_of_the_magazine_at_the_un_...
_and_Choteau._The_
ilk_River,_creating_glacial_Lake_Twin_River._Tributaries_of_the_Marias_River_were_also_blocked_by_the_Shelby_lobe,_leading_to_the_formation_of_glacial_lakes_Lake_Cut_Bank">Cutbank_ ''CutBank''_is_a_literary_journal_that_is_affiliated_with_the_University_of_Montana's_creative_writing_program._The_journal_was_founded_in_1973_with_the_help_of_William_Kittredge_among_others._It_is_the_third_incarnation_of_the_magazine_at_the_un_...
_and_Choteau._The_Loma,_Montana">Loma_sublobe_blocked_the_Missouri_River.html" "title="Loma,_Montana.html" ;"title="Lake_Cut_Bank.html" "title="Marias_River.html" ;"title="ilk River, creating glacial Lake Twin River. Tributaries of the Marias River">ilk River, creating glacial Lake Twin River. Tributaries of the Marias River were also blocked by the Shelby lobe, leading to the formation of glacial lakes Lake Cut Bank">Cutbank ''CutBank'' is a literary journal that is affiliated with the University of Montana's creative writing program. The journal was founded in 1973 with the help of William Kittredge among others. It is the third incarnation of the magazine at the un ...
 and Choteau. The Loma, Montana">Loma sublobe blocked the Missouri River">Missouri Missouri is a U.S. state, state in the Midwestern United States, Midwestern region of the United States. Ranking List of U.S. states and territories by area, 21st in land area, it is bordered by eight states (tied for the most with Tennessee ...
 north of the Highwood Mountains, forming glacial Lake Great Falls. A lake also formed in the Musselshell River basin.Geologic Framework and Glaciation of the Central Area, 1-1-2006; Christopher L. Hill; Boise State University, Boise, Idaho; 2006


Identification

Scattered limestone boulders and cobbles sitting on bedrock with in the Teton River basin, east of the river outlet from the piedmont glacial lobe and west of Choteau is evidence of several pre- Pinedale piedmont glaciations. The
clasts Clastic rocks are composed of fragments, or clasts, of pre-existing minerals and rock. A clast is a fragment of geological detritus,Essentials of Geology, 3rd Ed, Stephen Marshak, p. G-3 chunks, and smaller grains of rock broken off other rocks ...
made up of boulders and cobbles from the limestone-rich, mountain-source and is a nonglacial
alluvium Alluvium (from Latin ''alluvius'', from ''alluere'' 'to wash against') is loose clay, silt, sand, or gravel that has been deposited by running water in a stream bed, on a floodplain, in an alluvial fan or beach, or in similar settings. Alluv ...
of Tertiary age that formerly covered the bedrock surfaces.Map Showing Spatial and Temporal Relations of Mountain and Continental Glaciations on the Northern Plains, Primarily in Northern Montana and Northwestern North Dakota; David S. Fullerton, Roger B. Colton, Charles A. Bush, and Arthur W. Straub; Pamphlet to accompany Scientific Investigations Map 2843; U.S. Department of the Interior, U.S. Geological Survey; Washington, D.C., 2004 Paleosols identified as part of the Bull Lake till units or outwash units are weakly developed. They represent two stades of a single glaciation. They are dated from the early Bull Lake lateral moraines in the Glacier National Park at approximately 160 thousand years before present (YBP), the late Bull Lake lateral moraines are approximately 140 thousand YBP.


See also

*
List of prehistoric lakes This a partial list of prehistoric lakes. Although the form of the names below differ, the lists are alphabetized by the identifying name of the lake (e.g., Algonquin for Glacial Lake Algonquin). YBP = Years Before Present. North America Endor ...
*Proglacial lakes of the Missouri River Basin **
Lake Cut Bank Lake Cut Bank was a glacial lake formed during the late Pleistocene along the Missouri and Sun Rivers. After the Laurentide Ice Sheet retreated, water melting off the glacier accumulated between the Rocky Mountinas and the ice sheet. The lake drai ...
**Lake Chouteau ** Lake Great Falls **
Lake Musselshell The basin that held Pleistocene Lake Musselshell is in the lower (north-flowing) reach of the river. It is underlain mostly by highly erodible Cretaceous Colorado shale, Montana group sandstone, siltstone and shale, and Hell Creek sandstone and ...
** Lake Jordan **
Lake Glendive Glacial Lake Glendive was a glacial lake on the lower Yellowstone River. It formed in the valley of Yellowstone, during the late Pleistocene epoch south of the Keewatin Ice Sheet. As the ice sheet retreated northward, the lake drained into the m ...
** Lake McKenzie


References

{{Pleistocene Lakes and Seas
Chouteau Chouteau was the name of a highly successful, ethnically French fur-trading family based in Saint Louis, Missouri, which they helped found. Their ancestors Chouteau and Laclède initially settled in New Orleans. They then moved-up the Mississipp ...
Geology of Montana
Chouteau Chouteau was the name of a highly successful, ethnically French fur-trading family based in Saint Louis, Missouri, which they helped found. Their ancestors Chouteau and Laclède initially settled in New Orleans. They then moved-up the Mississipp ...
Natural history of Montana
Chouteau Chouteau was the name of a highly successful, ethnically French fur-trading family based in Saint Louis, Missouri, which they helped found. Their ancestors Chouteau and Laclède initially settled in New Orleans. They then moved-up the Mississipp ...
Teton County, Montana