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103-590: The Cumberland Mountains are a mountain range in the southeastern section of the Appalachian Mountains . They are located in western Virginia , southwestern West Virginia , the eastern edges of Kentucky , and eastern middle Tennessee , including the Crab Orchard Mountains . Their highest peak, with an elevation of 4,223 feet (1,287 m) above mean sea level, is High Knob , which is located near Norton, Virginia . According to

206-555: A historic district on May 28, 1980. Within the Cumberland Gap National Historical Park there are currently 855 known species of vascular plants identified, but that number is expected to increase with reports from National Park Service inventory and monitoring programs. There are 15 various vegetation communities throughout the park, with some of them in special locations, such as mountain bogs, low-elevation wetlands, and rocky bluffs. Of

309-472: A fragile ecosystem known as the Southern Appalachian spruce–fir forest . Fraser fir rarely occurs below 5,500 ft (1,700 m), and becomes the dominant tree type at 6,200 ft (1,900 m). By contrast, balsam fir is found from near sea level to the tree line in the northern Appalachians, but ranges only as far south as Virginia and West Virginia in the central Appalachians, where it

412-735: A great thickness of sediment accumulated. Eventually, the tectonic forces pulling the two continents apart became so strong that an ocean formed off the eastern coast of the Laurentian margin. This was called the Iapetus Ocean and was the precursor of the modern Atlantic Ocean. The rocks of the Valley and Ridge province formed over millions of years, in the Iapetus. Shells and other hard parts of ancient marine plants and animals accumulated to form limey deposits that later became limestone. This

515-672: A new ocean opened up, the Rheic Ocean , during the Middle to Late Devonian, and subsequently its closure would result in the formation of the Alleghanian orogeny . As the continental plates moved closer together, fragments of oceanic crust, islands, and other continental masses collided with the eastern margin of ancestral North America. By this time, plants had appeared on land, followed by scorpions, insects, and amphibians. The ocean continued to shrink until, about 270 million years ago,

618-504: A number of deciduous rhododendrons (azaleas), and smaller heaths such as teaberry ( Gaultheria procumbens ) and trailing arbutus ( Epigaea repens ). The evergreen great rhododendron ( Rhododendron maximum ) is characteristic of moist stream valleys. These occurrences are in line with the prevailing acidic character of most oak forest soils. In contrast, the much rarer chinquapin oak ( Quercus muehlenbergii ) demands alkaline soils and generally grows where limestone rock

721-444: A number of serious insect and disease outbreaks. Among the most conspicuous is that of the introduced spongy moth ( Lymantria dispar ), which infests primarily oaks, causing severe defoliation and tree mortality. But it also has the benefit of eliminating weak individuals, and thus improving the genetic stock, as well as creating rich habitat of a type through accumulation of dead wood. Because hardwoods sprout so readily, this moth

824-697: A ridge. The southwestern terminus of Cumberland Mountain is marked by the northwest-trending Jacksboro Fault, a lateral ramp fault (part of the Pine Mountain Thrust Fault). The northwestern terminus is located near Norton, Virginia, where the hard sandstones dip below the surface as the axis of the Powell Valley anticline plunges to the northeast. The various gaps in Cumberland Mountain are caused by rock weaknesses at cross-cutting faults or joints. For example, Cumberland Gap

927-544: A variety of oaks ( Quercus spp.), hickories ( Carya spp.) and, in the past, by the American chestnut ( Castanea dentata ). The American chestnut was virtually eliminated as a canopy species by the introduced fungal chestnut blight ( Cryphonectaria parasitica ), but lives on as sapling-sized sprouts that originate from roots, which are not killed by the fungus. In present-day forest canopies, chestnut has been largely replaced by oaks. The oak forests of

1030-564: A variety of other destructive activities continue, albeit in diminished forms; and thus far only a few ecologically based management practices have taken hold. Appalachian bogs are boreal ecosystems , which occur in many places in the Appalachians, particularly the Allegheny and Blue Ridge subranges. Though popularly called bogs , many of them are technically fens . Cumberland Gap Long used by Native American nations,

1133-483: Is a boreal species that forms a few high elevation outliers as far south as West Virginia. All of these species except white pine tend to occupy sandy, rocky, poor soil sites, which are mostly acidic in character. White pine, a large species valued for its timber, tends to do best in rich, moist soil, either acidic or alkaline in character. Pitch pine is also at home in acidic, boggy soil, and Table Mountain pine may occasionally be found in this habitat as well. Shortleaf pine

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1236-516: Is a cliff-lined wall that was a barrier to exploration and settlement in Kentucky during the westward expansion in the late eighteenth century. The famous Cumberland Gap is one of several gaps along Cumberland Mountain that allowed access across the mountain. Cumberland Mountain is a long ridge running from near Caryville, Tennessee , northeastward to near Norton, Virginia, a distance of approximately 97 miles (156 km). The southeastern slope of

1339-809: Is also the highest point in the United States east of the Mississippi River . The range is older than the other major mountain range in North America, the Rocky Mountains of the west. Some of the outcrops in the Appalachians contain rocks formed during the Precambrian era. The geologic processes that led to the formation of the Appalachian Mountains started 1.1 billion years ago. The first mountain range in

1442-673: Is an extension of this hiking trail into the Canadian portion of the Appalachian range in New Brunswick and Quebec . While exploring inland along the northern coast of Florida in 1528, the members of the Narváez expedition , including Álvar Núñez Cabeza de Vaca , found a Native American village near present-day Tallahassee, Florida whose name they transcribed as Apalchen or Apalachen [a.paˈla.tʃɛn] . The name

1545-589: Is at the headward ramp of the Pine Mountain Thrust Fault. The hard Lee-type sandstones of the Early Pennsylvanian form the ridge line. The sandstone strata crop out here because northwestward movement along the thrust fault caused these sandstones to be pushed up the ramp and over younger strata. Because the sandstones are resistant to erosion, they form a prominent ridge along this ramp. The southwestern terminus of Pine Mountain

1648-403: Is found at high elevations in the northern Appalachians, and in bogs as far south as Pennsylvania. The Appalachians are also home to two species of fir, the boreal balsam fir ( Abies balsamea ), and the southern high elevation endemic, Fraser fir ( Abies fraseri ). Fraser fir is endemic to the highest parts of the southern Appalachian Mountains, where along with red spruce it forms

1751-533: Is generally found in warmer habitats and at lower elevations than the other species. All the species listed do best in open or lightly shaded habitats, although white pine also thrives in shady coves, valleys, and on floodplains. The Appalachians are characterized by a wealth of large, beautiful deciduous broadleaf (hardwood) trees. Their occurrences are best summarized and described in E. Lucy Braun 's 1950 classic, Deciduous Forests of Eastern North America (Macmillan, New York). The most diverse and richest forests are

1854-723: Is involved with the conservation of the mixed mesophytic forests within the northern Cumberland Plateau in Tennessee. The conservation organizations include The Nature Conservancy , the Doris Duke Charitable Foundation, and the Natural Resources Defense Council with focus on the Cumberland Plateau. The Cumberland Mountains are a physiographic section of the larger Appalachian Plateau province, which in turn

1957-578: Is marked by the northwest-trending Jacksboro Fault, a lateral ramp fault (part of the Pine Mountain Thrust Fault). The northwestern slope of Pine Mountain is cliff-lined (escarpment slope) whereas the southeastern slope is gentle, this is the dip slope , and it is roughly parallel to the dip of the sandstones. This is also the northern limb of the Middlesboro Syncline. Several gaps occur along Pine Mountain, and these are usually caused by erosion along cross-cutting faults. These gaps include

2060-632: Is named after the gap. The gap was formed by the development of three major structural features: the Pine Mountain Thrust Sheet, the Middlesboro Syncline, and the Rocky Face Fault . Lateral compressive forces of sedimentary rocks from deep layers of the Earth's crust pushing upward 320 to 200 million years ago created the thrust sheet. Resistance on the fault from the opposing Cumberland Mountain to Pine Mountain caused

2163-414: Is near the surface. Hence no ericaceous shrubs are associated with it. The Appalachian flora also include a diverse assemblage of bryophytes (mosses and liverworts), as well as fungi . Some species are rare and/or endemic. As with vascular plants , these tend to be closely related to the character of the soils and the thermal environment in which they are found. Eastern deciduous forests are subject to

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2266-465: Is not as harmful as the hemlock woolly adelgid . Perhaps more serious is the introduced beech bark disease complex, which includes both a scale insect ( Cryptococcus fagisuga ) and fungal components. During the 19th and early 20th centuries, the Appalachian forests were subject to severe and destructive logging and land clearing, which resulted in the designation of the national forests and parks as well many state-protected areas. However, these and

2369-527: Is now the southern United States, the Ococee Basin was formed. Seawater filled the basin. Rivers from the surrounding countryside carried clay, silt, sand, and gravel to the basin, much as rivers today carry sediment from the midcontinent region to the Gulf of Mexico. The sediment spread out in layers on the basin floor. The basin continued to subside, and over a long period of time, probably millions of years,

2472-721: Is one followed by the United States Geological Survey and the Geological Survey of Canada to describe the respective countries' physiographic regions. The U.S. uses the term Appalachian Highlands and Canada uses the term Appalachian Uplands ; the Appalachian Mountains are not synonymous with the Appalachian Plateau , which is one of the provinces of the Appalachian Highlands. The Appalachian range runs from

2575-510: Is one of many passes in the Appalachian Mountains , but one of the few in the continuous Cumberland Mountain ridgeline. It lies within Cumberland Gap National Historical Park and is located on the border of present-day Kentucky and Virginia , approximately 0.25 miles (0.40 km) northeast of the tri -state marker with Tennessee . The V-shaped gap serves as a gateway to the west. The base of

2678-493: Is part of the larger Appalachian physiographic division. Pine Mountain is a long, narrow ridge starting in northern Tennessee and extending northeastward into southeastern Kentucky and southwestern Virginia. Its southwestern terminus is near Pioneer, Tennessee , and it extends approximately 122 miles (196 km) to the northeast to near the Breaks Interstate Park in Kentucky and Virginia. Pine Mountain

2781-552: Is possible that the cratons of Kalahari , and Rio Plato , were also part of that early collision since they were present as Rodinia broke up). Mountain-building referred to as the Grenville Orogeny occurred along the boundaries of the cratons. The present Appalachian Mountains have at least two areas which are made from rock formations that were formed during this orogeny - the Blue Ridge Mountains and

2884-577: Is roughly parallel to Pine Mountain which lies from eight to ten miles to the northwest. Cumberland Mountain is part of the Cumberland Overthrust Sheet or block and is the northern limb of the Powell Valley Anticline, a ramp anticline . The ridge exists because hard Lee-type sandstones of Early Pennsylvanian Age crop out along this line. Softer rocks have been eroded away, leaving the resistant sandstones to form

2987-645: Is subject to the hemlock woolly adelgid ( Adelges tsugae ), an introduced insect, that is rapidly extirpating it as a forest tree. Less abundant, and restricted to the southern Appalachians, is Carolina hemlock ( Tsuga caroliniana ). Like Canada hemlock, this tree suffers severely from the hemlock woolly adelgid. Several species of pines characteristic of the Appalachians are eastern white pine ( Pinus strobus ), Virginia pine ( Pinus virginiana ), pitch pine ( Pinus rigida ), Table Mountain pine ( Pinus pungens ) and shortleaf pine ( Pinus echinata ). Red pine ( Pinus resinosa )

3090-506: Is the same process by which limestone forms in modern oceans. The weathering of limestone, now exposed at the land surface, produces the lime-rich soils that are so prevalent in the fertile farmland of the Valley and Ridge province. During this continental break-up, around 600 million to 560 million years ago, volcanic activity was present along the tectonic margins. There is evidence of this activity in today's Blue Ridge Mountains. Mount Rogers , Whitetop Mountain , and Pine Mountain are all

3193-464: Is usually confined above 3,900 ft (1,200 m) asl, except in cold valleys. Curiously, it is associated with oaks in Virginia. The balsam fir of Virginia and West Virginia is thought by some to be a natural hybrid between the more northern variety and Fraser fir. While red spruce is common in both upland and bog habitats, balsam fir, as well as black spruce and tamarack, are more characteristic of

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3296-628: The Adirondacks . After the Grenville orogeny, the direction of the continental drift reversed, and the single supercontinent Rodinia began to break up. The mountains formed during the Grenvillian era underwent erosion due to weathering, glaciation, and other natural processes, resulting in the leveling of the landscape. The eroded sediments from these mountains contributed to the formation of sedimentary basins and valleys. For example, in what

3399-596: The Coal Region of northeastern Pennsylvania . The bituminous coal fields of western Pennsylvania , western Maryland , southeastern Ohio, eastern Kentucky, southwestern Virginia , and West Virginia contain the sedimentary form of coal. The mountain top removal method of coal mining , in which entire mountain tops are removed, is currently threatening vast areas and ecosystems of the Appalachian Mountain region. The surface coal mining that started in

3502-437: The Geological Survey of Canada (GSC). The landforms are referred to as physiographic regions. The regions create precise boundaries from which maps can be drawn. The Appalachian Highlands is the name of one of the eight physiographic regions of the contiguous 48 United States. The Appalachian Uplands is the name of one of seven physiographic regions of Canada. The second level in the physiographic classification schema for

3605-758: The Gulf of Mexico . In the central section, north of the New River, the rivers, rising in or just beyond the Valley Ridges, flow through great gorges to the Great Valley, and then across the Blue Ridge to tidal estuaries penetrating the coastal plain via the Roanoke River, James River , Potomac River , and Susquehanna River . In the northern section the height of land lies on the inland side of

3708-661: The Iapetus Ocean , from the North America/Europe collision (See Caledonian orogeny ). By the end of the Mesozoic Era , the Appalachian Mountains had been eroded to an almost flat plain. It was not until the region was uplifted during the Cenozoic Era that the distinctive topography of the present formed. Uplift rejuvenated the streams, which rapidly responded by cutting downward into the ancient bedrock. Some streams flowed along weak layers that define

3811-613: The Island of Newfoundland in Canada, 2,050 mi (3,300 km) southwestward to Central Alabama in the United States; south of Newfoundland, it crosses the 96-square-mile (248.6 km ) archipelago of Saint Pierre and Miquelon , an overseas collectivity of France , meaning it is technically in three countries. The highest peak of the mountain range is Mount Mitchell in North Carolina at 6,684 feet (2,037 m), which

3914-491: The North American craton . Volcanoes grew along the continental margin coincident with the initiation of subduction . Thrust faulting uplifted and warped older sedimentary rock laid down on the passive margin. As the mountains rose, erosion began to wear them down over time. Streams carried rock debris downslope to be deposited in nearby lowlands. The Taconic orogeny ended after about 60 million years, but built much of

4017-631: The Ohio Valley before 1810. Today 18,000 cars pass beneath the site daily, and 1.2 million people visit the park on the site annually. The park features many hiking trails. U.S. Route 25E passed overland through the gap before the completion of the Cumberland Gap Tunnel in 1996. The original trail was then restored. The gap and associated historic resources were listed on the National Register of Historic Places as

4120-588: The Transylvania Company , arrived in the region leading a company of men to widen the path through the gap to make settlement of Kentucky and Tennessee easier. On his arrival, Boone discovered that Martin had already arrived in Powell Valley , where Martin and his men were clearing land for their own settlement – the westernmost settlement in English colonial America at the time. By the 1790s,

4223-651: The USGS , the Cumberland Mountain range is 131 miles (211 km) long and 20 miles (32 km) wide, bounded by the Russell Fork on the northeast, the Pound River and Powell River on the southeast, Cove Creek on the southwest, and Tackett Creek, the Cumberland River , Poor Fork Cumberland River, and Elkhorn Creek on the northwest. The crest of the range forms the Kentucky and Virginia boundary from

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4326-491: The eastern United States, the region around Cumberland Gap experiences all four seasons. The summers are typically sunny, warm, and humid with average high temperatures in the mid to upper 80s °F (29-32 °C). In the winter months, January through March, temperatures range in the 30s to 40s °F (0s °C) and are generally mild with rain and few periods of snow. The nearest cities are Middlesboro , Kentucky and Harrogate , Tennessee. The nearby town of Cumberland Gap , Tennessee

4429-660: The eastern seaboard of the United States and the Midwest region of the country. The Eastern Continental Divide follows the Appalachian Mountains from Pennsylvania to Georgia. The Appalachians, particularly the Central and Southern regions, is one of the most biodiverse places in North America. The north–south orientation of the long ridges and valleys contributes to the high number of plant and animal species. Species were able to migrate through these from either direction during alternating periods of warming and cooling, settling in

4532-1552: The mixed-mesophytic or medium-moisture types, which are largely confined to rich, moist montane soils of the southern and central Appalachians, particularly in the Cumberland and Allegheny Mountains, but also thrive in the southern Appalachian coves. Characteristic canopy species are white basswood ( Tilia heterophylla ), yellow buckeye ( Aesculus octandra ), sugar maple ( Acer saccharum ), American beech ( Fagus grandifolia ), tuliptree ( Liriodendron tulipifera ), white ash ( Fraxinus americana ) and yellow birch ( Betula alleganiensis ). Other common trees are red maple ( Acer rubrum ), shagbark and bitternut hickories ( Carya ovata and C. cordiformis ) and black or sweet birch ( Betula lenta ). Small understory trees and shrubs include paw paw ( Asimina tribola ), flowering dogwood ( Cornus florida ), hophornbeam ( Ostrya virginiana ), witch-hazel ( Hamamelis virginiana ) and spicebush ( Lindera benzoin ). There are also hundreds of perennial and annual herbs, among them such herbal and medicinal plants as American ginseng ( Panax quinquefolius ), goldenseal ( Hydrastis canadensis ), bloodroot ( Sanguinaria canadensis ) and black cohosh ( Cimicifuga racemosa ). The foregoing trees, shrubs, and herbs are also more widely distributed in less rich mesic forests that generally occupy coves, stream valleys and flood plains throughout

4635-596: The 1940s has significantly impacted the central Appalachian Mountains in Kentucky , Tennessee , Virginia and West Virginia. Early mining methods were unregulated and mined land reclamation research, including acid base reaction , was led by the West Virginia University in the 1960s and 1970s. West Virginia developed rigorous mine reclamation standards for state coal mines in the late 1960s. Regulations were introduced by most federal states to protect

4738-399: The 1960s led many to interpret the geological features of the area to be the site of an ancient impact. In 1966 Robert Dietz discovered shatter cones in nearby sandstone , proving recent speculation. Shatter cones, a rock-shattering pattern naturally formed only during impact events , are found in abundance in the area. The presence of shatter cones found also helped confirm the origin of

4841-432: The 371 species of animals listed as of 2014 within the park, 33 are mammals , 89 are birds , 29 amphibians , 15 reptiles , 27 fish , and 187 are insects , however many others remain to be included. Visitors to the park can expect to see gray squirrels , white-tailed deer , cottontail rabbits , songbirds , hawks , snakes , turtles , and perhaps black bear or bobcat . Over 120 species of birds have been logged in

4944-661: The American colonies after the Battle of Culloden . The explorer Thomas Walker gave the name to the Cumberland River in 1750, and the name soon spread to many other features in the region, such as the Cumberland Gap. In 1769 Joseph Martin built a fort nearby at present-day Rose Hill, Virginia , on behalf of Walker's land claimants. But Martin and his men were chased out of the area by Native Americans, and Martin did not return until 1775. In 1775 Daniel Boone , hired by

5047-564: The Appalachian Basin. Some plateaus of the Appalachian Mountains contain metallic minerals such as iron and zinc . There are many geological issues concerning the rivers and streams of the Appalachians. In spite of the existence of the Great Appalachian Valley, many of the main rivers are transverse to the mountain system axis. The drainage divide of the Appalachians follows a tortuous course that crosses

5150-627: The Appalachian Mountains by the late 1960s. Social and political activism brought about the Surface Mining Control and Reclamation Act of 1977 . The 1859 discovery of commercial quantities of petroleum in the Appalachian Mountains of western Pennsylvania started the modern United States petroleum industry . Recent discoveries of commercial natural gas deposits in the Marcellus Shale formation and Utica Shale formations have once again focused oil industry attention on

5253-552: The Blue Ridge again reaches 2,000 ft (600 m) and higher. In the Virginia Blue Ridge, the following are some of the highest peaks north of the Roanoke River : Stony Man 4,031 ft (1,229 m), Hawksbill Mountain 4,066 ft (1,239 m), Apple Orchard Mountain 4,225 ft (1,288 m) and Peaks of Otter 4,001 and 3,875 ft (1,220 and 1,181 m). South of the Roanoke River, along

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5356-738: The Blue Ridge, are Virginia's highest peaks including Whitetop Mountain 5,520 ft (1,680 m) and Mount Rogers 5,729 ft (1,746 m), the highest point in the Commonwealth. Chief summits in the southern section of the Blue Ridge are located along two main crests, the Western or Unaka Front along the Tennessee - North Carolina border and the Eastern Front in North Carolina, or one of several "cross ridges" between

5459-493: The Cumberland Gap was brought to the attention of settlers in 1750 by Thomas Walker , a Virginia physician and explorer. The path was used by a team of frontiersmen led by Daniel Boone , making it accessible to pioneers who used it to journey into the western frontiers of Kentucky and Tennessee. An important part of the Wilderness Road , it is now part of the Cumberland Gap National Historical Park . The Cumberland Gap

5562-931: The Great Balsams. The Western Blue Ridge Front is subdivided into the Unaka Range , the Bald Mountains , the Great Smoky Mountains , and the Unicoi Mountains , and its major peaks include Roan Mountain 6,285 ft (1,916 m) in the Unakas, Big Bald 5,516 ft (1,681 m) and Max Patch 4,616 ft (1,407 m) in the Bald Mountains, Kuwohi 6,643 ft (2,025 m), Mount Le Conte 6,593 feet (2,010 m), and Mount Guyot 6,621 ft (2,018 m) in

5665-555: The Great Smokies, and Big Frog Mountain 4,224 ft (1,287 m) near the Tennessee- Georgia -North Carolina border. Prominent summits in the cross ridges include Waterrock Knob (6,292 ft (1,918 m)) in the Plott Balsams . Across northern Georgia, numerous peaks exceed 4,000 ft (1,200 m), including Brasstown Bald , the state's highest, at 4,784-and-4,696 ft (1,458-and-1,431 m) Rabun Bald . In north-central Alabama , Mount Cheaha rises prominently to 1,445 feet (440 m) over its surroundings, as part of

5768-483: The Pinnacle 3,007 feet (917 m) and Pidgeon Roost 3,400 ft (1,000 m). In West Virginia, more than 150 peaks rise above 4,000 ft (1,200 m), including Spruce Knob 4,863 ft (1,482 m), the highest point in the Allegheny Mountains . A number of other points in the state rise above 4,800 ft (1,500 m). Cheat Mountain ( Snowshoe Mountain ) at Thorny Flat 4,848 ft (1,478 m) and Bald Knob 4,842 ft (1,476 m) are among

5871-516: The Tennessee border to the Russell Fork River. Variant names of the Cumberland Mountains include Cumberland Mountain, Cumberland Range, Ouasioto Mountains, Ouasiota Mountains, Laurel Mountain, and Pine Mountain. They are named for Prince William, Duke of Cumberland . The Cumberland Mountains range includes Pine Mountain , Cross Mountain , Cumberland Mountain, Log Mountain, Little Black Mountain, and Black (Big Black) Mountain, as well as others. Oak Ridge National Laboratory ( Oak Ridge, Tennessee )

5974-424: The U-shaped structure of the Middlesboro Syncline. The once flat-lying sedimentary rocks were deformed roughly 40 degrees northwest. Further constriction to the northwest of Cumberland Mountain developed into a fault trending north-to-south called the Rocky Face Fault, which eventually cut through Cumberland Mountain. This combination of natural geological processes created ideal conditions for weathering and erosion of

6077-433: The USGS is "province", the same word as Canada uses to divide its political subdivisions, meaning that the terminology used by the two countries do not match below the region level. The lowest level of classification is "section". The Appalachian Uplands are one of the seven physiographic divisions in Canada . Canada's GSC does not use the same classification system as the USGS below the division level. The agency does break

6180-433: The United States and Canada, and partly because the range was formed over numerous geologic time periods, one of which is sometimes termed the Appalachian orogeny , writing communities struggle to agree on an encyclopedic definition of the mountain range. However, each of the governments has an agency that informs the public about the major landforms that make up the countries, the United States Geological Survey (USGS) and

6283-414: The border of the coastal plain through the central and southern Atlantic states; and on the northwest, the Allegheny and Cumberland plateaus declining toward the Great Lakes and the interior plains. A remarkable feature of the belt is the longitudinal chain of broad valleys, including the Great Appalachian Valley , which in the southerly sections divides the mountain system into two unequal portions, but in

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6386-457: The continent that are now exposed. The first mountain-building tectonic plate collision that initiated the construction of what are today the Appalachians occurred at least a billion years ago when the pre-North American craton called Laurentia collided with at least one other craton - Amazonia . All the other cratons of the earth also collided at about this time to form the supercontinent Rodinia and were surrounded by one single ocean. (It

6489-416: The continents that were ancestral to North America and Africa collided during the formation of the supercontinent Pangea . Because North America and Africa were once geographically connected, the Appalachians formed part of the same mountain chain as the Little Atlas in Morocco . This mountain range, known as the Central Pangean Mountains , extended into Scotland , before the Mesozoic Era opening of

6592-412: The deciduous needle-leaf conifer, the tamarack , or eastern larch ( Larix laricina ). The dominant northern and high elevation conifer is the red spruce ( Picea rubens ), which grows from near sea level to above 4,000 ft (1,200 m) above sea level (asl) in northern New England and southeastern Canada. It also grows southward along the Appalachian crest to the highest elevations of

6695-399: The divisions of the Appalachian Uplands into 13 subsections that are in four different political provinces of Canada. While the Appalachian Highlands and Appalachian Uplands are generally continuous across the U.S./Canadian border, the St. Lawrence Valley area is handled differently in the physiographic classification schemas. The part of the St. Lawrence Valley in the United States is one of

6798-446: The drainage divide between the Cumberland River to the north and the Powell River to the south. Several mountains that lie between Pine Mountain and Cumberland Mountain include Black Mountain and Little Black Mountain as well as a number of smaller mountains (Short, Walnut, Rich, Log, Reynolds, etc.). These are all synclinal mountains and reside along the axis of the northeast-trending Middlesboro Syncline. The Pine Mountain ramp forms

6901-529: The driest sites are dominated by chestnut oak, or sometimes by scarlet or northern red oaks. In the northern Appalachians the oaks, except for white and northern red, drop out, while the latter extends farthest north. The oak forests generally lack the diverse small tree, shrub and herb layers of mesic forests. Shrubs are generally ericaceous , and include the evergreen mountain laurel ( Kalmia latifolia ), various species of blueberries ( Vaccinium spp.), black huckleberry ( Gaylussacia baccata ),

7004-440: The early 19th century, Washington Irving proposed renaming the United States either Appalachia or Alleghania. In U.S. dialects in the southern regions of the Appalachians, the word is pronounced / ˌ æ p ə ˈ l æ tʃ ɪ n z / , with the third syllable sounding like "latch". In northern parts of the mountain range, it is pronounced / ˌ æ p ə ˈ l eɪ tʃ ɪ n z / or / ˌ æ p ə ˈ l eɪ ʃ ɪ n z / ;

7107-425: The folds and faults created many millions of years earlier. Other streams downcut so rapidly that they cut right across the resistant folded rocks of the mountain core, carving canyons across rock layers and geologic structures. The Appalachian Mountains contain major deposits of anthracite coal as well as bituminous coal . In the folded mountains the coal is in metamorphosed form as anthracite , represented by

7210-487: The gap at High Cliff, Tennessee (near Jellico ), the Narrows gap at Pineville, Kentucky , and Pound Gap near Jenkins, Kentucky . There are other minor gaps as well. Cumberland Mountain, not to be confused with the Cumberland Mountains within which it resides, is a long ridge extending from northeastern Tennessee, southeastern Kentucky and southwestern Virginia. Its peak forms the boundary between Kentucky and Virginia in some areas. The southeastern side of Cumberland Mountain

7313-436: The gap during General Braxton Bragg 's Kentucky Invasion . The following year, in a bloodless engagement in September 1863 , Union Army troops under General Ambrose Burnside forced the surrender of 2,300 Confederates defending the gap, gaining Union control of the gap for the remainder of the war. It is estimated that between 200,000 and 300,000 European-American settlers passed through the gap on their way into Kentucky and

7416-482: The gap is about three hundred feet (90 m) above the valley floor, even though the north side of the pass was lowered twenty feet (6 m) during the construction of Old U.S. Route 25E . To the south, the ridge rises six hundred feet (180 m) above the pass, while to the north the Pinnacle Overlook towers 900 feet (270 m) above at an elevation of 2,505 feet (765 m). Centrally located in

7519-602: The impact. In September 2003, the site was designated a Distinguished Geologic Site by the Kentucky Society of Professional Geologists. Without the Rocky Face Fault, it would have been difficult for pack-horses to navigate this gap and the gap in Pine Mountain near Pineville , and it would be improbable that wagon roads would have been constructed at an early date. Middlesboro is the only place in

7622-485: The land mass that is now New England and southwestward to Pennsylvania. The Taconic Orogeny was the second of four mountain building plate collisions that contributed to the formation of the Appalachians, culminating in the collision of North America and Africa (see Alleghanian orogeny ). The third mountain-building event was the Acadian orogeny which occurred between 375 and 359 million years ago. The Acadian orogeny

7725-469: The latter. However, balsam fir also does well in soils with a pH as high as 6. Eastern or Canada hemlock ( Tsuga canadensis ) is another important evergreen needle-leaf conifer that grows along the Appalachian chain from north to south but is confined to lower elevations than red spruce and the firs. It generally occupies richer and less acidic soils than the spruce and firs and is characteristic of deep, shaded and moist mountain valleys and coves . It

7828-540: The microclimates that best suited them. The flora of the Appalachians are diverse and vary primarily in response to geology, latitude, elevation and moisture availability. Geobotanically, they constitute a floristic province of the North American Atlantic Region . The Appalachians consist primarily of deciduous broad-leaf trees and evergreen needle-leaf conifers, but also contain the evergreen broad-leaf American holly ( Ilex opaca ), and

7931-788: The more notable peaks in West Virginia. The Blue Ridge Mountains , rising in southern Pennsylvania and there known as South Mountain , attain elevations of about 2,000 ft (600 m) in Pennsylvania. South Mountain achieves its highest point just below the Mason-Dixon line in Maryland at Quirauk Mountain 2,145 ft (654 m) and then diminishes in height southward to the Potomac River . Once in Virginia ,

8034-652: The mountainous belt just north of the New River in Virginia. South of the New River, rivers head into the Blue Ridge, cross the higher Unakas, receive important tributaries from the Great Valley, and traversing the Cumberland Plateau in spreading gorges ( water gaps ), escape by way of the Cumberland River and the Tennessee River rivers to the Ohio River and the Mississippi River, and thence to

8137-550: The mountainous belt, and thus the main lines of drainage run from north to south, exemplified by the Hudson River . However, the valley through which the Hudson River flows was cut by the gigantic glaciers of the ice ages —the same glaciers that deposited their terminal moraines in southern New York and formed the east–west Long Island . The Appalachian region is generally considered the geographical divide between

8240-432: The name of the tribe to the mountains themselves. The first cartographic appearance of Apalchen is on Diego Gutiérrez 's map of 1562; the first use for the mountain range is the map of Jacques le Moyne de Morgues in 1565. The name was not commonly used for the whole mountain range until the late 19th century. A competing and often more popular name was the "Allegheny Mountains", "Alleghenies", and even "Alleghania". In

8343-467: The northernmost lies west of all the ranges possessing typical Appalachian features, and separates them from the Adirondack group. The mountain system has no axis of dominating altitudes, but in every portion, the summits rise to rather uniform heights, and, especially in the central section, the various ridges and intermontane valleys have the same trend as the system itself. None of the summits reaches

8446-599: The northwestern limb of this syncline and Cumberland Mountain (the northwestern limb of the Powell Valley Anticline) forms the southeastern limb. Appalachian Mountains The Appalachian Mountains , often called the Appalachians , are a mountain range in eastern to northeastern North America . The term "Appalachian" refers to several different regions associated with the mountain range, and its surrounding terrain. The general definition used

8549-424: The oceans, but there were no plants or animals on land. Then, during the middle Ordovician Period about 500 to 470 million years ago, the motion of the crustal plates changed, and the continents began to move back toward each other. The once-quiet Appalachian passive margin changed to a very active plate boundary when a neighboring Iapetus oceanic plate containing a volcanic arc collided with and began sinking beneath

8652-460: The region of perpetual snow. In Pennsylvania , there are over sixty summits that rise over 2,500 ft (800 m); the summits of Mount Davis and Blue Knob rise over 3,000 ft (900 m). In Maryland, Eagle Rock and Dans Mountain are conspicuous points reaching 3,162 and 2,882 ft (964 and 878 m) respectively. On the same side of the Great Valley, south of the Potomac, are

8755-506: The region was created when the continents of Laurentia and Amazonia collided, creating a supercontinent called Rodinia . The collision of these continents caused the rocks to be folded and faulted, creating the first mountains in the region. Many of the rocks and minerals that were formed during that event can currently be seen at the surface of the present Appalachian range. Around 480 million years ago, geologic processes began that led to three distinct orogenic eras that created much of

8858-488: The result of volcanic activity that occurred around this time. Evidence of subsurface activity, dikes and sills intruding into the overlying rock, is present in the Blue Ridge as well. For instance, mafic rocks have been found along the Fries Fault in the central Blue Ridge area of Montgomery County, VA. The Iapetus continued to expand and during that time bacteria, algae, and many species of invertebrates flourished in

8961-429: The ridge is cliff lined, whereas the northwestern slope is more gentle. The ridge is interrupted by several gaps, including Cumberland Gap, Big Creek Gap between Ivydell and LaFollette, Tennessee , Pennington Gap near Pennington Gap, Virginia , and Big Stone Gap near Big Stone Gap, Virginia . The crest of Cumberland Mountain ranges from 2,200 feet (670 m) to 3,500 feet (1,100 m) in elevation. Cumberland Mountain

9064-532: The ridges are not high, the terrain is extremely rugged. In Ohio and New York, some of the plateau has been glaciated , which has rounded off the sharp ridges and filled the valleys to some extent. The glaciated regions are usually referred to as hill country rather than mountains. The Appalachian belt includes the plateaus sloping southward to the Atlantic Ocean in New England , and southeastward to

9167-611: The rocks. . The discovery of the Middlesboro impact structure has proposed new details in the formation of Cumberland Gap. Less than 300 million years ago a meteorite, "approximately the size of a football field", struck the earth, creating the Middlesboro Crater . One of three astroblemes in the state, it is a 3.7 mi (6.0 km) diameter meteorite impact crater with the city of Middlesboro, Kentucky built entirely inside it. Detailed mapping by geologists in

9270-498: The second-level classifications, part of the Appalachian Highlands. In Canada, the area is part of the first-level classification, the St. Lawrence Lowlands . This includes the area around the city of Montreal, Anticosti Island , and the northwest coastline of Newfoundland. The dissected plateau area, while not actually made up of geological mountains, is popularly called "mountains", especially in eastern Kentucky and West Virginia, and while

9373-416: The southern Appalachians, as in North Carolina and Tennessee . In the central Appalachians it is usually confined above 3,000 ft (900 m) asl, except for a few cold valleys in which it reaches lower elevations. In the southern Appalachians, it is restricted to higher elevations. Another species is the black spruce ( Picea mariana ), which extends farthest north of any conifer in North America,

9476-413: The southern and central Appalachians consist largely of black , northern red , white , chestnut and scarlet oaks ( Quercus velutina, Q. rubra, Q. alba, Q. prinus and Q. coccinea ) and hickories, such as the pignut ( Carya glabra ) in particular. The richest forests, which grade into mesic types, usually in coves and on gentle slopes, have predominantly white and northern red oaks, while

9579-511: The southern and central Appalachians at low and intermediate elevations. In the northern Appalachians and at higher elevations of the central and southern Appalachians these diverse mesic forests give way to less diverse northern hardwood forests with canopies dominated only by American beech, sugar maple, American basswood ( Tilia americana ) and yellow birch and with far fewer species of shrubs and herbs. Drier and rockier uplands and ridges are occupied by oak–chestnut forests dominated by

9682-544: The southernmost spur of the Blue Ridge Mountains. Sources written prior to the recognition of the concept of physiographic regions divided the Appalachian Mountains into three major sections: Plate tectonics over the period dating back at least 1 billion years led to geological creation of the land that is now the Appalachian Mountain range. The continental movement led to collisions that built mountains and they later pulled apart creating oceans over parts of

9785-573: The surface structure seen in today's Appalachians. During this period, mountains once reached elevations similar to those of the Alps and the Rockies before natural erosion occurred over the last 240 million years leading to what is present today. The Appalachian Mountains are a barrier to east–west travel, as they form a series of alternating ridgelines and valleys oriented in opposition to most highways and railroads running east–west. This barrier

9888-440: The third syllable is like "lay", and the fourth "chins" or "shins". There is often great debate between the residents of the regions regarding the correct pronunciation. Elsewhere, a commonly accepted pronunciation for the adjective Appalachian is / ˌ æ p ə ˈ l æ tʃ i ə n / , with the last two syllables "-ian" pronounced as in the word "Romanian". Perhaps partly because the range runs through large portions of both

9991-500: The trail that Boone and his men built had been widened to accommodate wagon traffic and became known as the Wilderness Road . Several American Civil War engagements occurred in and around the Cumberland Gap and are known as the Battle of the Cumberland Gap . In June 1862, Union Army General George W. Morgan captured the gap for the Union . In September of that year, Confederate States Army forces under Edmund Kirby Smith occupied

10094-628: The two main crests. Major subranges of the Eastern Front include the Black Mountains , Great Craggy Mountains , and Great Balsam Mountains , and its chief summits include Grandfather Mountain 5,964 ft (1,818 m) near the Tennessee-North Carolina border, Mount Mitchell 6,684 ft (2,037 m) in the Blacks, and Black Balsam Knob 6,214 ft (1,894 m) and Cold Mountain 6,030 ft (1,840 m) in

10197-490: The world where coal is mined inside an astrobleme. Special mining techniques must be used in the complicated strata of this crater. The earliest written account of Cumberland Gap dates to the 1670s, by Abraham Wood of Virginia. Some time before 1748 Samuel Stalnaker is believed to have passed through the gap while exploring the region. The gap was named for Prince William, Duke of Cumberland , son of King George II of Great Britain , who had many places named for him in

10300-661: Was caused by a series of collisions of pieces of crust from the Avalonia Terrane, sections broken off from continent of Gondwana , with the North American Plate. The collision initiating this orogeny resulted in the closing of the southern Iapetus Ocean and the formation of a high mountain belt. After the Acadian collision took place, Gondwana began to retreat from Laurentia with the newly accreted Avalonian terranes left behind. As Gondwana moved away,

10403-521: Was caused by erosion along the cross-cutting Rocky Face Fault . The cliff-lined southeastern slope (escarpment slope) of Cumberland Mountain was created by erosion along the breached side of the Powell Valley Anticline. The more-gentle northwestern slope is the dip slope and roughly parallel to the dip of the Early Pennsylvanian sandstones. This northwestward dip is the northern limb of the Powell Valley Anticline. Cumberland Mountain forms

10506-591: Was extremely important in shaping the expansion of the United States in the colonial era. The range is the home of a very popular recreational feature, the Appalachian Trail . This is a 2,175-mile (3,500 km) hiking trail that runs all the way from Mount Katahdin in Maine to Springer Mountain in Georgia , passing over or past a large part of the Appalachian range. The International Appalachian Trail

10609-518: Was soon altered by the Spanish to Apalachee and used as a name for the tribe and region spreading well inland to the north. Pánfilo de Narváez 's expedition first entered Apalachee territory on June 15, 1528, and applied the name. Now spelled "Appalachian", it is the fourth-oldest surviving European place-name in the US. After the 1540 expedition of Hernando de Soto , Spanish cartographers began to apply

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