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Barn Bluff (Red Wing, Minnesota)
Barn Bluff (, frequently anglicized to He Mni Can) is a hill, bluff along the Mississippi River in Red Wing, Minnesota, United States. The bluff is considered sacred by the Dakota people, Dakota people because it is the site of many burial mounds. During the 19th century, the bluff functioned as a visual reference for explorers and travelers and later served as a limestone quarry. The bluff overlooks the downtown area and towers about above the Mississippi River with an extensive view of Lake Pepin to the south. It is one of hundreds of bluffs in the Driftless Area, which covers parts of Wisconsin, Iowa, and Illinois, in addition to the southeastern toe of Minnesota. Geology Most of the bluff is displaced approximately upwards relative to the adjoining bedrock along the Red Wing Fault, which transects the bluff near its south face. It is composed of early Paleozoic rocks, including Ordovician Dolomite (rock), dolomite and sandstone atop Cambrian shale, siltstone and greensa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Red Wing Bridge
The Red Wing Bridge is a bridge that carries U.S. Route 63 across the Mississippi River from Wisconsin to Red Wing, Minnesota. The previous bridge at the site was a cantilever bridge. It was officially named the Eisenhower Bridge for Dwight D. Eisenhower, the 34th President of the United States, who opened the bridge in November 1960. After the I-35W Mississippi River bridge#Collapse, collapse of the I-35W bridge in Minneapolis, the State of Minnesota conducted a thorough investigation of the state's road infrastructure, and the Red Wing Bridge was identified as in need of replacement. Construction on the replacement span began in 2017 and the original bridge was demolished in February 2020. See also *List of crossings of the Upper Mississippi River References Further reading * Bridges completed in 1960 Bridges over the Mississippi River Bridges of the United States Numbered Highway System Buildings and structures in Goodhue County, Minnesota Red Wing, Minnesota Road ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shale
Shale is a fine-grained, clastic sedimentary rock formed from mud that is a mix of flakes of Clay mineral, clay minerals (hydrous aluminium phyllosilicates, e.g., Kaolinite, kaolin, aluminium, Al2Silicon, Si2Oxygen, O5(hydroxide, OH)4) and tiny fragments (silt-sized particles) of other minerals, especially quartz and calcite.Blatt, Harvey and Robert J. Tracy (1996) ''Petrology: Igneous, Sedimentary and Metamorphic'', 2nd ed., Freeman, pp. 281–292 Shale is characterized by its tendency to split into thin layers (Lamination (geology), laminae) less than one centimeter in thickness. This property is called ''Fissility (geology), fissility''. Shale is the most common sedimentary rock. The term ''shale'' is sometimes applied more broadly, as essentially a synonym for mudrock, rather than in the narrower sense of clay-rich fissile mudrock. Texture Shale typically exhibits varying degrees of fissility. Because of the parallel orientation of clay mineral flakes in shale, it breaks in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Treaty Of Traverse Des Sioux
The Treaty of Traverse des Sioux () was signed on July 23, 1851, at Traverse des Sioux in Minnesota Territory between the United States government and the Dakota people, Upper Dakota Sioux bands. In this land cession treaty, the Sisseton and Wahpeton Dakota bands sold 21 million acres of land in present-day Iowa, Minnesota and South Dakota to the U.S. for $1,665,000. The treaty was instigated by Alexander Ramsey, the first governor of Minnesota Territory, and Luke Lea (Commissioner of Indian Affairs), Luke Lea, Commissioner of Indian Affairs in Washington, D.C. They were assisted by territorial Congressional delegate Henry Hastings Sibley and the traders who sought compensation for business losses which appeared on their books as "Indian debts." Governor Ramsey and Commissioner Lea justified the Treaty of Traverse des Sioux and the Treaty of Mendota to the United States Congress on the basis of an "overwhelming tide of migration...increasing and irresistible in its westward progre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barn Bluff, Upper Mississippi River, By Upton, B
A barn is an agricultural building usually on farms and used for various purposes. In North America, a barn refers to structures that house livestock, including cattle and horses, as well as equipment and fodder, and often grain.Allen G. Noble, ''Traditional Buildings: A Global Survey of Structural Forms and Cultural Functions'' (New York: Tauris, 2007), 30. As a result, the term barn is often qualified e.g. tobacco barn, dairy barn, cow house, sheep barn, potato barn. In the British Isles, the term barn is restricted mainly to storage structures for unthreshed cereals and fodder, the terms byre or shippon being applied to cow shelters, whereas horses are kept in buildings known as stables. In mainland Europe, however, barns were often part of integrated structures known as byre-dwellings (or housebarns in US literature). In addition, barns may be used for equipment storage, as a covered workplace, and for activities such as threshing. Etymology The word ''barn'' comes f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
View Of Barn Bluff And Mississippi River, By Upton, B
Acornsoft was the software arm of Acorn Computers, and a major publisher of software for the BBC Micro and Acorn Electron. As well as games, it also produced a large number of educational titles, extra computer languages and business and utility packages – these included word processor ''VIEW'' and the spreadsheet ''ViewSheet'' supplied on ROM and cartridge for the BBC Micro/Acorn Electron and included as standard in the BBC Master and Acorn Business Computer. History Acornsoft was formed in late 1980 by Acorn Computers directors Hermann Hauser and Chris Curry, and David Johnson-Davies, author of the first game for a UK personal computer and of the official Acorn Atom manual "Atomic Theory and Practice". David Johnson-Davies was managing director and in early 1981 was joined by Tim Dobson, Programmer and Chris Jordan, Publications Editor. While some of their games were clones or remakes of popular arcade games (e.g. ''Hopper'' is a clone of Sega's ''Frogger'', '' Snapper' ... [...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, a city at the confluence of its main tributary, the Missouri River. Historically, it may refer to the area above the Arkansas Post, above the confluence of Ohio River, or above Cape Girardeau. 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glacial River Warren
Glacial River Warren, also known as River Warren, was a prehistoric river that drained Lake Agassiz in central North America between about 13,500 and 10,650 BP calibrated (11,700 and 9,400 14C uncalibrated) years ago. A part of the uppermost portion of the former river channel was designated a National Natural Landmark in 1966. Geological history Lake Agassiz was formed from the meltwaters of the Laurentide Ice Sheet during the Wisconsin glaciation of the last ice age. Agassiz was an enormous body of water, up to deep, and at various times covering areas totaling over . Blocked by an ice sheet to the north, the lake water rose until about 13,500 BP calibrated (11,700 14C uncalibrated) years ago when it overtopped the ''Big Stone Moraine'', a ridge of glacial drift left by the receding glacier, at the location of Browns Valley, Minnesota. The lake's outflow was catastrophic, and carved a gorge through the moraine wide and deep, which is now known as the Traverse Gap. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
US Highway 61
U.S. Route 61 or U.S. Highway 61 (U.S. 61) is a major United States highway that extends between New Orleans, Louisiana and the city of Wyoming, Minnesota. The highway generally follows the course of the Mississippi River and is designated the Great River Road for much of its route. As of 2004, the highway's northern terminus in Wyoming, Minnesota, is at an intersection with Interstate 35 (I-35). Until 1991, the highway extended north on what is now Minnesota State Highway 61 (MN 61) through Duluth to the Canada–U.S. border near Grand Portage, then continued to Thunder Bay, Canada, as Ontario Highway 61. Its southern terminus in New Orleans is at an intersection with U.S. Route 90 (US 90). The route was an important south–north connection in the days before the interstate highway system. The highway is often called the Blues Highway because of its long history in blues music; part of the route lies on the Mississippi Blues Trail and is denoted by markers in Vicksburg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Loess
A loess (, ; from ) is a clastic rock, clastic, predominantly silt-sized sediment that is formed by the accumulation of wind-blown dust. Ten percent of Earth's land area is covered by loesses or similar deposition (geology), deposits. A loess is a periglacial or aeolian processes, aeolian (windborne) sediment, defined as an accumulation of 20% or less of clay with a balance of roughly equal parts sand and silt (with a typical grain size from 20 to 50 micrometers), often loosely cemented by calcium carbonate. Usually, they are homogeneity and heterogeneity, homogeneous and highly Porosity#Porosity in earth sciences and construction, porous and have vertical capillaries that permit the sediment to fracture and form vertical cliff, bluffs. Properties Loesses are wikt:homogeneous, homogeneous, Porosity#Porosity in earth sciences and construction, porous, friable, pale yellow or buff (color), buff, slightly wikt:coherent, coherent, typically non-stratum, stratified, and often calc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drift (geology)
In geology, drift is a name for all sediment (clay, silt, sand, gravel, boulders) transported by a glacier and deposited directly by or from the ice, or by glacial meltwater. Drift is often subdivided into unstratified (unsorted) drift ( glacial till) that forms moraines and stratified drift (glaciolacustrine and fluvioglacial sediments) that accumulates as stratified and sorted sediments in the form of outwash plains, eskers, kames, varves, and so forth. The term drift clay is a synonym for boulder clay. Both are archaic terms for glacial tills with a fine-grained matrix.Neuendorf, K.K.E., J.P. Mehl, Jr., and J.A. Jackson, eds., 2005. ''Glossary of Geology'' (5th ed.). Alexandria, Virginia, American Geological Institute. 779 pp. In the United Kingdom, drift is also applied as a general term for all surficial, unconsolidated, rock debris and sediment that is moved from one place to accumulate in another and mapped separately or otherwise differentiated from underlyin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
