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Porcupine Mountains
The Porcupine Mountains, or Porkies, are a group of small mountains spanning the northwestern Upper Peninsula of Michigan The Upper Peninsula of Michigan—also known as Upper Michigan or colloquially the U.P. or Yoop—is the northern and more elevated of the two major landmasses that make up the U.S. state of Michigan; it is separated from the Lower Peninsula of ... in Ontonagon County, Michigan, Ontonagon and Gogebic County, Michigan, Gogebic counties, near the shore of Lake Superior. The Porcupine Mountains were named by the native Ojibwa people, supposedly because their silhouette had the shape of a crouching porcupine. They are home to the most extensive stand of old growth northern hardwood forest in North America west of the Adirondack Mountains, spanning at least . The area is popular among tourists, especially Lake of the Clouds in the heart of the mountains, and is part of Porcupine Mountains Wilderness State Park. The Porcupine Mountains were the site of copp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ontonagon County, Michigan
Ontonagon County ( ) is a County (United States), county in the Upper Peninsula of the U.S. state of Michigan. As of the 2020 United States census, 2020 census, the population was 5,816, making it Michigan's third-least populous county. The county seat is Ontonagon, Michigan, Ontonagon. The county was set off in 1843, and organized in 1848. Its territory had been organized as part of Chippewa County, Michigan, Chippewa and Mackinac County, Michigan, Mackinac counties. With increasing population in the area, more counties were organized. After Ontonagon was organized, it was split to create Gogebic County, Michigan, Gogebic County. It is also the westernmost county in United States that lies within the Eastern Time Zone. History In 1843, Michigan's Upper Peninsula was divided into Mackinac County, Michigan, Mackinac, Chippewa County, Michigan, Chippewa, Marquette County, Michigan, Marquette, Schoolcraft County, Michigan, Schoolcraft, Delta County, Michigan, Delta, and Ontonag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nonesuch Mine
__NOTOC__ The Nonesuch Mine is an abandoned copper mine and small ghost town in the southeast corner of the Porcupine Mountains State Park in Carp Lake Township, Ontonagon County, near Silver City, Michigan, United States. The area was given its name soon after Ed Less discovered the Nonesuch vein of copper on the Little Iron River in 1865. The name refers to the occurrence of the copper in sandstone: "nonesuch" ore existed elsewhere in the Copper Country. The life of Nonesuch was relatively short. It saw its first mining in 1867 and its last in 1912. The mine was opened and closed five different times, each under different ownership. The only time it made a profit was in the period 1879–1881. A US post office operated at Nonesuch from 1876 to 1887. Between 1881 and 1884 the town reached its peak with a population of about 300. The town included school with 30 students, as well as a boarding house, livery stable, markets, stage coach service, and a uniformed baseball tea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eastern Hemlock
''Tsuga canadensis'', also known as eastern hemlock, eastern hemlock-spruce, or Canadian hemlock, and in the French-speaking regions of Canada as ''pruche du Canada'', is a coniferous tree native to eastern North America. It is the state tree of Pennsylvania. Eastern hemlocks are widespread throughout much of the Great Lakes region, the Appalachian Mountains, the Northeastern United States, and Maritime Canada. They have been introduced in the United Kingdom and mainland Europe, where they are used as ornamental trees. Eastern hemlock populations in North America are threatened in much of their range by the spread of the invasive Hemlock woolly adelgid, which infests and eventually kills trees. Declines in population from hemlock wooly adelgid infestation have led to ''Tsuga canadensis'' being listed as Near Threatened on the IUCN Red List. Eastern hemlocks are long lived trees, with many examples living for more than 500 years. They can grow to heights of more than , and are to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Basswood
''Tilia americana'' is a species of tree in the Family (biology), family Malvaceae, native to eastern North America, from southeast Manitoba east to New Brunswick, southwest to northeast Oklahoma, southeast to South Carolina, and west along the Niobrara River to Cherry County, Nebraska. It is the sole representative of its genus in the Western Hemisphere, assuming ''T. caroliniana'' is treated as a subspecies or local ecotype of ''T. americana''. Common names include American basswood and American linden. Description The American basswood is a medium-sized to large deciduous tree reaching a height of exceptionally with a trunk diameter of at maturity. It grows faster than many North American hardwoods, often twice the annual growth rate of American beech and many birch species. Life expectancy is around 200 years, with flowering and seeding generally occurring between 15 and 100 years, though occasionally seed production may start as early as eight years. The crown is dom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sugar Maple
''Acer saccharum'', the sugar maple, is a species of flowering plant in the soapberry and lychee family Sapindaceae. It is native to the hardwood forests of eastern Canada and the eastern United States. Sugar maple is best known for being the primary source of maple syrup and for its brightly colored fall foliage. It may also be called "rock maple," "sugar tree," "sweet maple," or, particularly in reference to the wood, "hard maple," " birds-eye maple," or "curly maple," the last two being specially figured lumber. Description ''Acer saccharum'' is a deciduous tree normally reaching heights of , and exceptionally up to . A 10-year-old tree is typically about tall. As with most trees, forest-grown sugar maples form a much taller trunk and narrower canopy than open-growth ones. The leaves are deciduous, up to long and wide, palmate, with five lobes and borne in opposite pairs. The basal lobes are relatively small, while the upper lobes are larger and deeply notched. In con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Old Growth Forest
An old-growth forest or primary forest is a forest that has developed over a long period of time without disturbance. Due to this, old-growth forests exhibit unique ecological features. The Food and Agriculture Organization of the United Nations defines primary forests as naturally regenerated forests of native tree species where there are no clearly visible indications of human activity and the ecological processes are not significantly disturbed. One-third (34 percent) of the world's forests are primary forests. Old-growth features include diverse tree-related structures that provide diverse wildlife habitats that increases the biodiversity of the forested ecosystem. Virgin or first-growth forests are old-growth forests that have never been logged. The concept of diverse tree structure includes multi-layered canopies and canopy gaps, greatly varying tree heights and diameters, and diverse tree species and classes and sizes of woody debris., the world has of primary forest r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake-effect Snow
Lake-effect snow is produced during cooler atmospheric conditions when a cold air mass moves across long expanses of warmer lake water. The lower layer of air, heated by the lake water, picks up water vapor from the lake and rises through colder air. The vapor then freezes and is deposited on the leeward (downwind) shores. The same effect also occurs over bodies of saline water, when it is termed ocean-effect or bay-effect snow. The effect is enhanced when the moving air mass is uplifted by the orographic lift, orographic influence of higher elevations on the downwind shores. This uplifting can produce narrow but very intense bands of precipitation, which deposit at a rate of many inches of snow each hour, often resulting in a large amount of total snowfall. The areas affected by lake-effect and parallel "ocean-effect" phenomena are called snowbelts. These include areas east of the Great Lakes in North America, the west coasts of northern Japan, Lake Baikal in Russia, and areas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stratovolcano
A stratovolcano, also known as a composite volcano, is a typically conical volcano built up by many alternating layers (strata) of hardened lava and tephra. Unlike shield volcanoes, stratovolcanoes are characterized by a steep profile with a summit crater and explosive eruptions. Some have collapsed summit craters called calderas. The lava flowing from stratovolcanoes typically cools and solidifies before spreading far, due to high viscosity. The magma forming this lava is often felsic, having high to intermediate levels of silica (as in rhyolite, dacite, or andesite), with lesser amounts of less viscous mafic magma. Extensive felsic lava flows are uncommon, but can travel as far as 8 km (5 mi). The term ''composite volcano'' is used because strata are usually mixed and uneven instead of neat layers. They are among the most common types of volcanoes; more than 700 stratovolcanoes have erupted lava during the Holocene Epoch (the last 11,700 years), and many ol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Presque Isle River
The Presque Isle River runs through the Upper Peninsula of Michigan and empties into Lake Superior.U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map accessed May 1, 2012 Along its course, it flows through the Ottawa National Forest and Porcupine Mountains Wilderness State Park. It has of drainage area in Upper Michigan and northern Wisconsin Wisconsin ( ) is a U.S. state, state in the Great Lakes region, Great Lakes region of the Upper Midwest of the United States. It borders Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake Michigan to the east, Michig .... Several waterfalls are located on the river. They include (from west to east): * Manabezho Falls * Manido Falls * Nawadaha Falls * Iagoo Falls * Lepisto Falls * Nokomis Falls * Nimikon Falls * Minnewawa Falls * Yondota Falls References External links Rivers of Michigan Tributaries of Lake Superior Rivers of Gogebic County, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Keweenaw Peninsula
The Keweenaw Peninsula (, ) is a peninsula of the U.S. state of Michigan. Part of the greater landmass of the Upper Peninsula of Michigan, Upper Peninsula, the Keweenaw Peninsula projects about northeasterly into Lake Superior, forming Keweenaw Bay. The peninsula is part of Michigan's Copper Country region, as the region was home to the first major Copper mining in the United States, copper mining boom in the United States. Copper mining was active in this region from the 1840s to the 1960s. The peninsula is bisected by the Keweenaw Waterway, a partly natural, partly artificial waterway serving as a canal. The north side of the canal is known locally as Copper Island. The cities of Houghton, Michigan, Houghton, the peninsula's largest population center, and Hancock, Michigan, Hancock, are located along the shores of the Keweenaw Waterway. Houghton is home to Michigan Technological University. The Keweenaw Peninsula is politically divided primarily between Houghton County, Mich ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Escarpment
An escarpment is a steep slope or long cliff that forms as a result of faulting or erosion and separates two relatively level areas having different elevations. Due to the similarity, the term '' scarp'' may mistakenly be incorrectly used interchangeably with ''escarpment.'' ''Escarpment'' referring to the margin between two landforms, and ''scarp'' referring to a cliff or a steep slope. In this usage an escarpment is a ridge which has a gentle slope on one side and a steep scarp on the other side. More loosely, the term ''scarp'' also describes a zone between a coastal lowland and a continental plateau which shows a marked, abrupt change in elevation caused by coastal erosion at the base of the plateau. Formation and description Scarps are generally formed by one of two processes: either by differential erosion of sedimentary rocks, or by movement of the Earth's crust at a geologic fault. The first process is the more common type: the escarpment is a transition from one seri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conglomerate (geology)
Conglomerate () is a sedimentary rock made up of rounded gravel-sized pieces of rock surrounded by finer-grained sediments (such as sand, silt, or clay). The larger fragments within conglomerate are called clasts, while the finer sediment surrounding the clasts is called the matrix. The clasts and matrix are typically cemented by calcium carbonate, iron oxide, silica, or hardened clay. Conglomerates form when rounded gravels deposited by water or glaciers become solidified and cemented by pressure over time. They can be found in sedimentary rock sequences of all ages but probably make up less than 1 percent by weight of all sedimentary rocks. They are closely related to sandstones in origin, and exhibit many of the same types of sedimentary structures, such as tabular and trough cross-bedding and graded bedding.Boggs, S. (2006) ''Principles of Sedimentology and Stratigraphy.'', 2nd ed. Prentice Hall, New York. 662 pp. Friedman, G.M. (2003) ''Classification of sediments and s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
