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River Warren Falls
The River Warren Falls was a massive waterfall on the glacial River Warren initially located in present-day Saint Paul, Minnesota, United States. The waterfall was 2700 feet (823 m) across and 175 feet (53 m) high. Geologic history The area now occupied by the Twin Cities of St. Paul and Minneapolis generally consisted of a 155 foot (47 m) thick layer of St. Peter Sandstone, under a 16 foot (5 m) thick layer of shale, under a 35 foot (11 m) thick layer of Platteville limestone. These layers were the result of an Ordovician Period sea which covered east-central Minnesota 500 million years ago. The hard limestone cap was formed from fossilized shell fish. About 20,000 years ago, the area was covered by the Superior Lobe of the Laurentide Ice Sheet, which left the St. Croix moraine on the Twin Cities as it receded. Later the Grantsburg Sublobe of the Des Moines Lobe also covered the area. Under these vast layers of ice, tunne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glacial Till
image:Geschiebemergel.JPG, Closeup of glacial till. Note that the larger grains (pebbles and gravel) in the till are completely surrounded by the matrix of finer material (silt and sand), and this characteristic, known as ''matrix support'', is diagnostic of till. image:Glacial till exposed in roadcut-750px.jpg, Glacial till with tufts of grass Till or glacial till is unsorted glacier, glacial sediment. Till is derived from the erosion and entrainment of material by the moving ice of a glacier. It is deposited some distance down-ice to form terminal, lateral, medial and ground moraines. Till is classified into primary deposits, laid down directly by glaciers, and secondary deposits, reworked by fluvial transport and other processes. Description Till is a form of '' glacial drift'', which is rock material transported by a glacier and deposited directly from the ice or from running water emerging from the ice. It is distinguished from other forms of drift in that it is depos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Waterfalls Of Minnesota
A waterfall is a point in a river or stream where water flows over a vertical drop or a series of steep drops. Waterfalls also occur where meltwater drops over the edge of a tabular iceberg or ice shelf. Waterfalls can be formed in several ways, but the most common method of formation is that a river courses over a top layer of resistant bedrock before falling on to softer rock, which erodes faster, leading to an increasingly high fall. Waterfalls have been studied for their impact on species living in and around them. Humans have had a distinct relationship with waterfalls for years, travelling to see them, exploring and naming them. They can present formidable barriers to navigation along rivers. Waterfalls are religious sites in many cultures. Since the 18th century they have received increased attention as tourist destinations, sources of hydropower, andparticularly since the mid-20th centuryas subjects of research. Definition and terminology A waterfall is generally d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minnehaha Falls
Minnehaha Park is a city park in Minneapolis, Minnesota, United States, and home to Minnehaha Falls and the lower reaches of Minnehaha Creek. Officially named Minnehaha Regional Park, it is part of the Minneapolis Park and Recreation Board system and lies within the Mississippi National River and Recreation Area, a unit of the National Park Service. The park was designed by landscape architect Horace W.S. Cleveland in 1883 as part of the Grand Rounds Scenic Byway system, and was part of the popular steamboat Upper Mississippi River "Fashionable Tour" in the 1800s. The park preserves historic sites that illustrate transportation, pioneering, and architectural themes. Preserved structures include the Minnehaha Princess Station, a Victorian train depot built in the 1870s; the John H. Stevens House, built in 1849 and moved to the park from its original location in 1896, utilizing horses and 10,000 school children; and the Longfellow House, a house built to resemble the Henry Wad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minnehaha Creek
Minnehaha Creek ( dak, Mniȟáȟa Wakpádaŋ) is a 22-mile-long (35 km) tributary of the Mississippi River that flows east from Gray's Bay Dam on Lake Minnetonka through the suburban cities of Minnetonka, Hopkins, Saint Louis Park, and Edina, and the city of Minneapolis. The creek flows over Minnehaha Falls in Minnehaha Park near its mouth at the Mississippi River. History As with much of the Midwest, the area around the creek and Lake Minnetonka was originally inhabited by a native culture affiliated with the Mound Builders, but by the 1700s was occupied by the Mdewakanton People, a sub-tribe of the Dakota. The first Euro-Americans whose expedition to the area was documented were Joe Brown and Will Snelling, who canoed up the creek from Fort Snelling Fort Snelling is a former military fortification and National Historic Landmark in the U.S. state of Minnesota on the bluffs overlooking the confluence of the Minnesota and Mississippi Rivers. The military site was initi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minneapolis
Minneapolis () is the largest city in Minnesota, United States, and the county seat of Hennepin County. The city is abundant in water, with thirteen lakes, wetlands, the Mississippi River, creeks and waterfalls. Minneapolis has its origins in timber and as the flour milling capital of the world. It occupies both banks of the Mississippi River and adjoins Saint Paul, the state capital of Minnesota. Prior to European settlement, the site of Minneapolis was inhabited by Dakota people. The settlement was founded along Saint Anthony Falls on a section of land north of Fort Snelling; its growth is attributed to its proximity to the fort and the falls providing power for industrial activity. , the city has an estimated 425,336 inhabitants. It is the most populous city in the state and the 46th-most-populous city in the United States. Minneapolis, Saint Paul and the surrounding area are collectively known as the Twin Cities. Minneapolis has one of the most extensive public par ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Louis Hennepin
Father Louis Hennepin, O.F.M. baptized Antoine, (; 12 May 1626 – 5 December 1704) was a Belgian Roman Catholic priest and missionary of the Franciscan Recollet order (French: ''Récollets'') and an explorer of the interior of North America. Biography Antoine Hennepin was born in Ath in the Spanish Netherlands (present-day Hainaut, Belgium). In 1629, while he was living in the town of Béthune, it was captured by the army of Louis XIV of France. Henri Joulet, who accompanied Hennepin and wrote his own journal of their travels, called Hennepin a Fleming (a native of Flanders), although Ath was and still is a Romance-speaking area found in present-day Wallonia. Hennepin joined the Franciscans, and preached in Halles (Belgium) and in Artois. He was then put in charge of a hospital in Maestricht. He was also briefly an army chaplain. At the request of Louis XIV, the Récollets sent four missionaries to New France in May 1675, including Hennepin, accompanied by René Rob ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Upper Mississippi River
The Upper Mississippi River is the portion of the Mississippi River upstream of St. Louis, Missouri, United States, at the confluence of its main tributary, the Missouri River. History In terms of geologic and hydrographic history, the Upper Mississippi east and south of Fort Snelling is a portion of the now-extinct Glacial River Warren which carved the valley of the Minnesota River, permitting the immense Glacial Lake Agassiz to join the world's oceans at the Gulf of Mexico. The collapse of ice dams holding back Glacial Lake Duluth and Glacial Lake Grantsburg carved out the Dalles of the St. Croix River at Interstate Park. The Upper Mississippi River valley likely originated as an ice-marginal stream during the Pre-Illinoian Stage. The Driftless Area is a portion of North America left unglaciated at that ice age's height, hence not smoothed out or covered over by previous geological processes. Inasmuch as the Wisconsin glaciation formed lobes that met (and blocked) wher ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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. Alluvium is also sometimes called alluvial deposit. Alluvium is typically geologically young and is not consolidated into solid rock. Sediments deposited underwater, in seas, estuaries, lakes, or ponds, are not described as alluvium. Floodplain alluvium can be highly fertile, and supported some of the earliest human civilizations. Definitions The present consensus is that "alluvium" refers to loose sediments of all types deposited by running water in floodplains or in alluvial fans or related landforms. However, the meaning of the term has varied considerably since it was first defined in the French dictionary of Antoine Furetière, posthumously published in 1690. Drawing upon concepts from Roman law, Furetière defined ''alluvion'' (the F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drainage Basin
A drainage basin is an area of land where all flowing surface water converges to a single point, such as a river mouth, or flows into another body of water, such as a lake or ocean. A basin is separated from adjacent basins by a perimeter, the '' drainage divide'', made up of a succession of elevated features, such as ridges and hills. A basin may consist of smaller basins that merge at river confluences, forming a hierarchical pattern. Other terms for a drainage basin are catchment area, catchment basin, drainage area, river basin, water basin, and impluvium. In North America, they are commonly called a watershed, though in other English-speaking places, "watershed" is used only in its original sense, that of a drainage divide. In a closed drainage basin, or endorheic basin, the water converges to a single point inside the basin, known as a sink, which may be a permanent lake, a dry lake, or a point where surface water is lost underground. Drainage basins are similar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hudson Bay
Hudson Bay ( crj, text=ᐐᓂᐯᒄ, translit=Wînipekw; crl, text=ᐐᓂᐹᒄ, translit=Wînipâkw; iu, text=ᑲᖏᖅᓱᐊᓗᒃ ᐃᓗᐊ, translit=Kangiqsualuk ilua or iu, text=ᑕᓯᐅᔭᕐᔪᐊᖅ, translit=Tasiujarjuaq; french: baie d'Hudson), sometimes called Hudson's Bay (usually historically), is a large body of saltwater in northeastern Canada with a surface area of . It is located north of Ontario, west of Quebec, northeast of Manitoba and southeast of Nunavut, but politically entirely part of Nunavut. Although not geographically apparent, it is for climatic reasons considered to be a marginal sea of the Arctic Ocean. It Hudson Bay drainage basin, drains a very large area, about , that includes parts of southeastern Nunavut, Alberta, Saskatchewan, Ontario, Quebec, all of Manitoba, and parts of the U.S. states of North Dakota, South Dakota, Minnesota, and Montana. Hudson Bay's southern arm is called James Bay. The Cree language, Eastern Cree name for Hudson an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Red River Of The North
The Red River (french: rivière Rouge or ) is a river in the north-central United States and central Canada. Originating at the confluence of the Bois de Sioux and Otter Tail rivers between the U.S. states of Minnesota and North Dakota, it flows northward through the Red River Valley, forming most of the border of Minnesota and North Dakota and continuing into Manitoba. It empties into Lake Winnipeg, whose waters join the Nelson River and ultimately flow into Hudson Bay. The Red River is about long, of which about are in the United States and about are in Canada.Red River Map 3 Minnesota DNR; map shows the international border at 155. The river falls on its trip to Lake Winnipeg, wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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