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Topic: Appalachian orogeny

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Granville orogeny

Acadian orogeny

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	Orogeny - Wikipedia, the free encyclopedia
		Orogeny (Greek for "mountain generating") is the process of mountain building, and may be studied as a tectonic structural event, as a geographical event and a chronological event, in that orogenic events cause distinctive structural phenomena and related tectonic activity, affect certain regions of rocks and crust and happen within a time frame.
		Orogenic events occur solely as a result of the processes of plate tectonics; the problems which were investigated and resolved by the study of orogenesis contributed greatly to the theory of plate tectonics, coupled with study of flora and fauna, geography and mid ocean ridges in the 1950s and 1960s.
		It was, in the context of orogeny, contested hotly by proponents of vertical movements in the crust (similar to tephrotectonics), or convection within the asthenosphere or mantle (geology).
	en.wikipedia.org /wiki/Orogeny (1442 words)

	Orogeny - Wikipedia, the free encyclopedia
		Appalachian orogeny (Appalachian Mountains,) is a well studied orogenic belt resulting from a late paleozoic collision between North America and Africa.
		Himalayan orogeny (Himalaya Mountains) is a result of the ongoing collision of the Indian Plate with the Eurasian Plate.
		Ouachita orogeny (Ouachita Mountains) of Arkansas and Oklahoma is an orogenic belt that dates from the late Paleozoic and is most likely a continuation of the Appalachian orogeny west across the Mississippi embayment rift zone.
	www.encyclopedia-online.info /Orogeny (307 words)

	Appalachian Mountains - Wikipedia, the free encyclopedia
		The Appalachian region is generally considered the geographical dividing line between the eastern seaboard of the United States and the Midwest region of the country.
		The Appalachian belt includes, with the ranges enumerated above, the plateaus sloping southward to the Atlantic Ocean in New England, and south-eastward to the border of the coastal plain through the central and southern Atlantic states; and on the north-west, the Allegheny and Cumberland plateaus declining toward the Great Lakes and the interior plains.
		The birth of the Appalachian ranges, some 680 million years ago, marks the first of several mountain building plate collisions that culminated in the construction of the supercontinent Pangea with the Appalachians near the center.
	en.wikipedia.org /wiki/Appalachian (2536 words)

	[No title]
		Appalachian (Alleghenian) Orogeny — The culmination of collision and mountain-building along the eastern margin is the Appalachian orogeny.
		Taconic Orogeny —In the Late Ordovician-Early Silurian, graywacke and interbedded volcanics indicate closure in the Taconic orogeny.
		Antler Orogeny - This began in the Devonian, with the subduction of oceanic lithosphere beneath the western margin of the craton, crushing sediment in the intervening basin.
	www.lee.edu /~cguldenzopf/Historical/Chapters/Historicalch20.doc (7300 words)

	GO 568 Appalachian Mountains
		Appalachian Plateau -- The plateau is underlain by gently folded to little-deformed Paleozoic sedimentary strata.
		The Acadian Orogeny took place between North America and Europe, and is contemporaneous with Caledonian Orogeny of the British Isles, Greenland, and Scandinavia.
		The Appalachian Plateau of south-central New York is underlain by thick middle and upper Devonian strata.
	academic.emporia.edu /aberjame/struc_geo/appalach/appalach.htm (1633 words)

	Appalachian Mountains - Wikipedia, the free encyclopedia (Site not responding. Last check: 2007-10-26)
		The Appalachian Mountains are a system of North American mountains running from Newfoundland and Labrador, Canada to Alabama in the United States, although the northernmost mainland portion ends at the Gaspé Peninsula of Quebec.
		In addition to the true folded mountains, known as the ridge and valley province, the area of dissected plateau to the north and west of the mountains is usually grouped with them.
		In the folded mountains the coal is in metamorphosed form as anthracite represented by the coal fields of northeastern Pennsylvania.
	www.gogog.com /project/wikipedia/index.php/Appalachian_Mountains (990 words)

	Appalachian Mountains jerak.org (Site not responding. Last check: 2007-10-26)
		In addition to the true folded mountains, known as the Ridge-and-valley Appalachians, the area of dissected plateau Blue Mountain (Pennsylvania) to the north and west of the mountains is usually grouped with them.
		Main article: Geology of the Appalachians The Appalachians are aging mountains.
		A look at rocks exposed in today's Appalachian mountains reveals elongated belts of folded and thrust Geologic_fault marine sedimentary rock s, volcanic rock s and slivers of ancient ocean floor, which provides strong evidence that these rocks were deformed during plate collision.
	appalachian.mountains.en.jerak.org (2412 words)

	NYC Regional Geology
		In the New York Bight region, the Allegheny Plateau and the Catskill Mountains of Pennsylvanian and New York are the northern extension of the greater Appalachian Plateau.
		Origin of the Appalachian Orogen, a result of three separate continental collisions involving the North American Continent with the Taconic and Acadian terranes, and finally the collision of the African and North American continents during the Alleghenian Orogeny at the end of the Paleozoic.
		During the coarse of the orogeny, older rocks were deformed and metamorphosed, and new faults formed and older faults were reactivated.
	3dparks.wr.usgs.gov /nyc/valleyandridge/valleyandridge.htm (2289 words)

	Text (Site not responding. Last check: 2007-10-26)
		For example, the Coastal Plain and Appalachian Plateau are relatively geologically simple, whereas the Piedmont and the Valley and Ridge are relatively complex [Figure>>].
		During and after the Taconic orogeny, upper Ordovician, Silurian, and lower Devonian sediments accumulated in a foreland basin, a large depression produced by the weight of the Taconic mountains.
		The Alleghanian orogeny involved the collision of North America and Africa and heralded the final assembly of the supercontinent of Pangea.
	geology.rutgers.edu /103web/NJcontext/njcontext_text.html (1558 words)

	[No title]
		~Baltica Baltica collided with Laurentia in the Acadian Orogeny*.
		~Appalachian Orogeny aThe Appalachian or Alleghenian Orogeny ocurred during the Pennsylvanian Period.
		~Sonoma Orogeny aThe Sonoma Orogeny occurred from the collision of a microcontinent with the west coast of North America in the Mesozoic Era.
	www.usd.edu /exam/backup/DP-10.txt (2824 words)

	Appalachian Mountains Encyclopedia Article @ BuyTexasart.com (Buy Texas Art) (Site not responding. Last check: 2007-10-26)
		These were late comers to the New World forced to the frontier to find unclaimed lands.
		Only by way of the Hudson and Mohawk Valleys, and round about the southern termination of the system were there easy routes to the interior of the country, and these were long closed by hostile aborigines as well as French colonists to the north and Spanish colonists to the south.
		The word "Apalachen" was also applied to an inland mountain range, and through the course of time it became applied to the entire range and its spelling was changed.
	www.buytexasart.com /encyclopedia/Appalachian_Mountains (2016 words)

	Formation of Pangaea
		Yet the evidence of the last round of orogenies leading to the formation of Pangaea remain visible for anyone who has the time and inclination to examine it.
		The Acadian orogeny, as this first collision episode is know, continued through the Devonian and into the Mississippian.
		Any orogenies that may have occurred at this time in the Middle East are obscured by later events.
	webspinners.com /dlblanc/tectonic/pangea.php (1540 words)

	GEOLOGY AND GEOGRAPHY OF THE NEW YORK BIGHT
		During the Taconic Orogeny a small landmass, similar in size to modern Japan, was accreted onto the North American continent in the southern New England.
		This orogeny is also associated with the collision and accretion of a smaller landmass (the Avalon Terrane) in the northern New England region, however, tectonic deformation associated with this event (particularly faulting and folding) affected much of the entire New York Bight region.
		The Appalachian Orogeny (or Alleghany Orogeny) is responsible for the formation of the folded and faulted mountain belt that extends from southern New York southward into Alabama and beyond.
	www.geo.hunter.cuny.edu /bight/highland.html (902 words)

	Newark Basin Text (Site not responding. Last check: 2007-10-26)
		Many of these faults partially or totally utilized older faults that had formed during the earlier Appalachian orogeny because it was easier to reactivate an old fault than it was to break rock and form a new fault.
		Both the border-fault segments and the thrust faults dip (are inclined) to the southeast (the symbols on the faults--ball and bar for normal fault, triangle for thrust fault--are on the southeast side of the fault line).
		This suggests that the border fault is an old thrust fault (originally formed during the Appalachian orogeny) that was reactivated during Mesozoic rifting.
	geology.rutgers.edu /103web/Newarkbasin/NB_text.html (5196 words)

	[No title]
		Simultaneously, the area was exposed to extensive thrust faulting and uplift, resulting in the Appalachian orogeny.
		INTRODUCTION Towards the Late Mississippian the Appalachian region underwent a large-scale regression and saw the end of typical epeiric carbonate deposition on the craton.
		This was the cause of extensive thrust faulting and continuous uplift of the Appalachian belt (Prothero and Dott, 2004).
	filebox.vt.edu /s/summerb/sedstrat4.doc (1382 words)

	[No title]
		Same as the Alleghenian or Appalachian Orogeny.\par }{\plain \par }{\plain \b Anhydrite}{\plain : A mineral composed of Calcium, Magnesium and sulfate ions, usually formed by the evaporation of sea water.
		A structural fold of which the core contains older rocks and is generally concave downward.\par }{\plain \b \par }{\plain \b Appalachian Basin}{\plain : A broad geographic area comprised of most of the Appalachian mountains and plateau.
		of }{\plain \b orogeny }{\plain :the thrusting, folding, faulting, metamorphism and deep igneous activities of large sections of the crust.
	www.rso.cornell.edu /snrc/flnf/documents/oilgas-defbib82000.rtf (6295 words)

	GEOLOGY AND GEOGRAPHY OF THE NEW YORK BIGHT (Site not responding. Last check: 2007-10-26)
		Before and during the Appalachian Orogeny Carboniferous age (Mississippian and Pennsylvanian) coal-bearing sedimentary rocks in eastern Pennsylvania formed from sediments deposited on a swampy alluvial plain along the western margin of a high mountain range.
		The Piedmont is an area east of the folds, and is partially buried by younger sediments including the relatively geologically "younger" deposits of the Newark Basin and the Coastal Plain.
		The deformation associated with the Appalachian Orogeny no doubt created major fault systems in the region and subjected the rocks currently buried beneath the Newark Basin and the Coastal Plain to intense deformation.
	www.geo.hunter.cuny.edu /bight/valley.html (638 words)

	Manassas National Battlefield Park - Geology - US-Parks.com
		The park is part of the Culpeper Basin, a distinctive geological province that is one of a series of Triassic-age trough depressions which border the eastern front of the Appalachian Mountains from Culpeper County into Maryland.
		Siltstone is a red-to purplish brown, micaceous rock that forms the parent material for most of the soil in the eastern half of the park.
		Diabase, which moved up through the siltstone during the upheaval of the Appalachian Orogeny, is much more extensive in the western half of the park.
	www.us-parks.com /manassas/geology.html (625 words)

	Earth History Outline
		This orogeny was the 1st episode of Appalachian Mt.building, forming the Taconic Mountains and depositing thick clastic sediment sediments in the inland seas.
		This collision formed the supercontinent of Pangaea and uplifted the metamorphic core of the Appalachian mountain belt.
		The Appalachian Orogeny resulted in extensive thrust faulting and folding of these sediments.
	itc.gsw.edu /faculty/tweiland/Earthis.htm (1805 words)

	Geology Destinations: Great Smoky Mountain National Park
		The Smoky Mountains are part of the Appalachian Mountains, which stretch from Georgia to Canada.
		(An orogeny is a mountain-forming event where the earth's crust is compressed together.) This orogeny caused much of the strata to become folded, faulted, fractured and metamorphosed.
		Large thrust faults developed during the orogeny, moving much older Precambrian bedrock up and over the younger Paleozoic strata.
	www.suite101.com /article.cfm/13061/92767 (520 words)

	Orogeny Encyclopedia Article @ ArtsInTexas.com (Arts in Texas) (Site not responding. Last check: 2007-10-26)
		Orogeny Encyclopedia Article @ ArtsInTexas.com (Arts in Texas)
		With hindsight, we can discount Dana's conjecture that this contraction was due to the cooling of the Earth (aka the cooling earth theory).
		Relatively narrow orogen with large and rapid uplift
	www.artsintexas.com /encyclopedia/Orogeny (1305 words)

	Geology 1404 Exam 3 Spring 1999
		The final orogeny of the Appalachian mobile belt during the Paleozoic, producing the Appalachian Mountains, was the:
		What orogeny is indicated by the metamorphic rocks at the base of the Grand Canyon?
		The formation of the Appalachian mountains was the result of which
	blue.utb.edu /paullgj/geol1404/exams/ex4spr99.html (689 words)

	Appalachian Orogeny of the Paleozoic-- Ellen Kazary (Site not responding. Last check: 2007-10-26)
		accretion of rift remnants and volcanics B. Erosion of Mountains from Grenville Orogeny 1.
		Neathery, T. L., and Thomas, W. A.., Geodynamics Transect of the Appalachian Orogen in Alabama.
		The Northern Appalachian Traverses in the Maritimes of Canada.
	www.oberlin.edu /Geopage/projects/204projects/ellen/ellen.html (388 words)

	Practice questions: Student Questions on Chapter 13 (Site not responding. Last check: 2007-10-26)
		In the central Appalachian Mountains, Pennsylvanian rocks were folded and faulted, together with older ones.
		From Nova Scotia to Florida, nearly flat lying Upper Triassic strata rest unconformably upon folded Paleozoic rocks.
		Which orogeny was caused by the collision of Northern Africa with Europe?
	www.usd.edu /esci/e103/exam/Chap-13.html (741 words)

	Monroe Conservation District
		The interaction of acidic water with soluble rocks such as limestone produces the characteristic landscape known as karst.
		During the Appalachian Orogeny, a series of mountain -building events in the central and eastern U.S., rocks were alternately buried, uplifted, faulted, folded, and fractured.
		The geologic stresses of mountain-building and subsequent erosion created cracks and fissures in the rock through which rainwater and groundwater entered and actively dissolved the organic limestone.
	www.monroecd.org /karst.html (1329 words)

	GEOL 502 / Second Exam
		If someone asked you what the age of Appalachian folding was, what would your answer be?
		What general types of rocks are present and why does this present difficulties for plate tectonic models?
		If you were to set up a drilling program in Craters of the Moon National Monument and were to drill a mile-deep hole, what rocks might you expect to encounter?
	www.rohan.sdsu.edu /~3gleep6/courses/nat2e.html (213 words)

	Untitled
		Late Precambrian and Paleozoic mountain-building associated with subduction and continental collision
		Formed from Appalachian Orogeny, a series of three Paleozoic collisions (orogenies)
		Island arcs and microcontinents plastered (docked) onto main continent; about 40 in the Cordilleron (Fig.
	geoweb.tamu.edu /courses/geol101/grossman/Evolution.Continents.html (325 words)

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