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Topic: North American Plate

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List of tectonic plates

Pacific Plate

Okhotsk Plate

Farallon Plate

South American Plate

Antarctic Plate

List of tectonic plate interactions

African plate

Gorda Plate

Explorer Plate

Arabian Plate

Anatolian Plate

Cocos Plate

Plate tectonics

List of plate tectonics topics

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	www.collectibleshopping.com /north-american-birds (475 words)

	Major Tectonic Plates of the World
		Three types of movement are recognized at the boundaries between plates: convergent, divergent and transform-fault.
		Where an oceanic plate collides with a continental plate, the oceanic plate tips down and slides beneath the continental plate forming a deep ocean trench (long, narrow, deep basin.) An example of this type of movement, called subduction, occurs at the boundary between the oceanic Nazca Plate and the continental South American Plate.
		Plate tectonics, the branch of science that deals with the process by which rigid plates are moved across hot molten material, has helped to explain much in global-scale geology including the formation of mountains, and the distribution of earthquakes and volcanoes.
	geology.er.usgs.gov /eastern/plates.html (245 words)

	[No title]
		The North American Plate is a large land mass that is slowly moving (like every other plate on the earth's surface).
		Everything to the north and east of the RED LINE on the map is on the North American Plate.
		The San Andreas is the Plate boundary between the North American Plate and the Pacific Plate.
	www.devils-punchbowl.com /pages/geology.html (309 words)

	Earth
		The theory that describes this is known as plate tectonics.
		Plate tectonics and biological processes now maintain a continual flow of carbon dioxide from the atmosphere to these various "sinks" and back again.
		Irregularities in these factors cause the magnetic poles to move and even reverse relative to the surface; the geomagnetic north pole is currently located in northern Canada.
	www.seds.org /nineplanets/nineplanets/earth.html (0 words)

	North America Wedding Venues - Weddings Venues
		North America occupies the northern portion of the landmass generally referred to as the New World, the Western hemisphere, the Americas, or simply America.
		Greenland, a Danish self-governing island and the world's largest, is part of North America geographically and on the same tectonic plate (the North American Plate) but is not considered to be part of the continent politically.
		The nearest landmass to it is Cape Hatteras, North Carolina, and it is often thought of as part of North America, especially given its historical political and cultural ties to Virginia and other parts of the continent.
	www.weddingvenuesearch.com /northamerica-wedding-venues.html (538 words)

	North American Plate - Definition, explanation
		The North American Plate is a continental tectonic plate covering the continent of North America, extending eastward to the Mid-Atlantic Ridge and westward to the Cherskiy Range in East Siberia.
		The easterly side is a divergent boundary with the Eurasian Plate to the north and the African Plate to the south forming the northern part of the Mid-Atlantic Ridge.
		The westerly side is a convergent boundary with the subducting Juan de Fuca Plate to the north and a transform boundary with the Pacific Plate to the south along the San Andreas Fault.
	www.calsky.com /lexikon/en/txt/n/no/north_american_plate.php (219 words)

	Tectonic Plates
		For example, the North American plate consists of the North American continental mass and the oceanic crust extending out form the eastern edge of the North American continent to the spreading ridge of the Mid-Atlantic ocean ridge.
		According to plate tectonic theory, the outer 400 km of the Earth is is broken into two zones, the upper, thinner, rigidly deforming lithosphere 100 km or less in thickness and the lower ductilely deforming asthenosphere.
		There are three types of plate boundaries: 1) those composed of the tectonic plates that are moving apart, 2) those composed of tectonic plates that are slipping sideways, one past the other, and 3) those composed of tectonic plates that are colliding or being pushed together.
	www.utexas.edu /tmm/npl/mineralogy/Mineral_Genesis/defintectonicplates.htm (425 words)

	What is Plate Tectonics?
		Plate tectonics is the study of how the Earth's plates are driven and shaped by geological forces that keep them in constant motion.
		Plate boundaries might also move laterally past one another, as in the case of the Pacific and North American plates.
		This plate moves northwesterly at a rate of about 2 inches (5 cm) per year, while the North American plate on the opposite side of the San Andreas fault is moving in a southerly direction.
	www.wisegeek.com /what-is-plate-tectonics.htm (729 words)

	CVO Website - Plate Tectonics and Sea-Floor Spreading
		Each plate is about 80 kilometers (50 miles) thick and can be pictured as having a shallow part that deforms by elastic bending or by brittle breaking, and a deeper part that yields plastically, beneath which is a viscous layer on which the entire plate slides.
		In Washington State, the small Juan de Fuca plate off the coast of Washington, Oregon, and northern California is slowly moving eastward beneath a much larger plate that includes both the North American continent the land beneath part of the Atlantic Ocean.
		As the denser plate of oceanic crust is forced deep into the Earth's interior beneath the continental plate, a process known as subduction, it encounters high temperatures and pressures that partially melt solid rock.
	vulcan.wr.usgs.gov /Glossary/PlateTectonics/description_plate_tectonics.html (8248 words)

	On Shaky Ground 2 Why
		The San Andreas fault is the boundary between the Pacific and North American plates; the Mendocino fault separates the Gorda and Pacific plates.
		The Cascadia subduction zone is the boundary between the Gorda and Juan de Fuca plates offshore and the North American plate.
		North of the triple junction, the Gorda plate and its northern extension, the Juan de Fuca plate, move eastward on a collision course with the North American plate.
	www.humboldt.edu /~geology/earthquakes/shaky2_why.html (846 words)

	Plate Tectonics : Plate Boundaries
		As the giant plates move, diverging [pulling apart] or converging [coming together] along their borders, tremendous energies are unleashed resulting in tremors that transform Earth’s surface.
		While all the plates appear to be moving at different relative speeds and independently of each other, the whole jigsaw puzzle of plates is interconnected.
		Land on the west side of the fault zone (on the Pacific Plate) is moving in a northwesterly direction relative to the land on the east side of the fault zone (on the North American Plate).
	www.platetectonics.com /book/page_5.asp (831 words)

	Plate Tectonics Homework Key
		An oceanic plate (Cocos Plate) is subducted beneath another oceanic plate (Caribbean Plate) forming an oceanic trench to the west and active composite volcanoes that have coalesced into the isthmus of Central America.
		Himalayan Mountains are an example of a Continent-Continent convergent plate boundary where two slabs of continental crust have collided and compressing the crust and the acretionary wedge material and lifting it to form the Himalayan Mountains.
		The Gulf of California is a divergent plate boundary forming a narrow linear sea (basaltic oceanic crust) pulling the Baja Peninsula away from the North American Plate.
	www.eeescience.utoledo.edu /Faculty/Hayden/Courses/EngGeol/PlateTectHWKey.htm (1152 words)

	Understanding plate motions [This Dynamic Earth, USGS]
		Plate boundary zones -- broad belts in which boundaries are not well defined and the effects of plate interaction are unclear.
		Even though the Nazca Plate as a whole is sinking smoothly and continuously into the trench, the deepest part of the subducting plate breaks into smaller pieces that become locked in place for long periods of time before suddenly moving to generate large earthquakes.
		This earthquake, within the subduction zone between the Nazca Plate and the South American Plate, was one of deepest and largest subduction earthquakes recorded in South America.
	pubs.usgs.gov /gip/dynamic/understanding.html (2502 words)

	Plate Tectonics, the Cause of Earthquakes
		The plates consist of an outer layer of the Earth, the lithosphere, which is cool enough to behave as a more or less rigid shell.
		Plate boundaries in different localities are subject to different inter-plate stresses, producing these three types of earthquakes.
		The San Andreas fault in California is a nearby example of a transform, separating the Pacific from the North American plate.
	www.seismo.unr.edu /ftp/pub/louie/class/100/plate-tectonics.html (953 words)

	Plate Tectonics - Discover Our Earth
		The largest plate is the Pacific plate, followed by the African plate, Eurasian plate, Australian-Indian plate, Antarctic plate, North American plate, and South American plate.
		The eastern boundary of the North American plate is in the middle of the Atlantic Ocean, where there is a belt of active seismicity.
		The fact that continents are included as part of plates made of both continent and ocean suggests that the continents do not move independently of the oceans as Wegener envisioned, but rather that continent and ocean move together as part of a single plate.
	atlas.geo.cornell.edu /education/instructor/tectonics/boundaries.html (490 words)

	Plate Tectonics
		To understand plate tectonics we first need to understand the properties of the lithosphere, which includes the earth's crust and upper mantle.
		Located on the eastern side of the plate boundary is most of San Francisco, on the North American Plate, which is moving southeast.
		Being on opposite sides of the plate boundary, these cities are moving toward each other at a rate of 5 cm/yr.
	www.cst.cmich.edu /users/Franc1m/esc105/lectures/plate.htm (886 words)

	Earth
		The theory that describes this is known as plate tectonics.
		Plate tectonics and biological processes now maintain a continual flow of carbon dioxide from the atmosphere to these various "sinks" and back again.
		Irregularities in these factors cause the magnetic poles to move and even reverse relative to the surface; the geomagnetic north pole is currently located in northern Canada.
	seds.lpl.arizona.edu /nineplanets/nineplanets/earth.html (1598 words)

	Penn State News (Site not responding. Last check: )
		The North American plate is moving south while the Pacific plate is moving north.
		The researchers found that as the North American plate moves south and the Gorda plate moves under it, a gap forms at the intersection that allows hot magma from beneath to well up.
		North and south of the area immediately affected by the triple junction, the rivers flow north and south respectively, but between the two raised areas, rivers tend to meander and turn back on themselves, complicating flood prediction and protection.
	www.psu.edu /ur/NEWS/news/triplejunction.html (878 words)

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	North American Plate
		North America is a big continent, it is home to about 514,600,000 people.
		North America has a lot of earthquakes, about 4,600 earthquakes have been recorded along the western coast of North America during the last century.
		North America's plate goes along the edge of the continent, like this:
	eagle.csd49.org /604/2006-07/north_am_plate/northameriacanplate.html (61 words)

	Switch Plate Covers, Decorative Wall Plates & Light Switchplates
		Hand-crafted by woodburning scenes of North American wildlife into maple wall plates, our custom designs are then preserved with several coats of a lacquer finish to make them both easy to clean and durable for years of enjoyment.
		Whether you're a nature lover or simply a fan of North American wildlife, there is a special design to suit your personal preferences right here at ScenicSwitchplates.com.
		When you find the right cover plate designs for you, simply click the image for the switchplate and you can then choose the outlet style you wish to order.
	www.scenicswitchplates.com (0 words)

	Introduction to Plate Tectonics (Site not responding. Last check: )
		The ways that plates interact depend on their relative motion and whether oceanic or continental crust is at the edge of the lithospheric plate.
		The west margin of the South American continent, where the oceanic Nazca Plate is pushed toward and beneath the continental portion of the South American Plate, is an example of a convergent plate boundary.
		The San Andreas fault in California is an example of a transform plate boundary, where the Pacific Plate slides past the North American Plate.
	volcano.und.nodak.edu /vwdocs/vwlessons/plate_tectonics/part13.html (156 words)

	juan_de_Fuca_general
		The original Farallon-North American plate boundary is clouded in mystery and may have had several different characteristics over the life-time of the boundary zone.
		Toward the end of the Farallon plate portions of the Farallon plate were entirely subducted under the North American plate and the Pacific-North American plate boundary began to dominate the western U.S. The Pacific plate has different characteristics and a different vector (tending NE related to North American plate motion) then the Farallon plate.
		The remnant of the Farallon which was not entirely subducted in the north of the Pacific-North American plate transform boundary (at a point named for the juncture of the three tectonic plates: Mendocino Triple Junction) was one solid continuous Juan de Fuca plate.
	www.colorado.edu /GeolSci/Resources/WUSTectonics/PacNW/juan_de_Fuca_general.html (757 words)

	NASA Fact Sheets
		The term "plate" refers to large rigid blocks of the Earth's lithosphere, the solid outer 62 mile (100 km) crust of the Earth, that appear to move as a unit.
		The third type is a boundary where plates move horizontally past each other such as the San Andreas fault located on the North American Plate.
		Plate boundaries are marked, in fact defined, by zones of earthquake activity.
	www.gsfc.nasa.gov /gsfc/service/gallery/fact_sheets/earthsci/earth.htm (726 words)

	Gravity and Magnetic data: MENDOCINO TRIPLE JUNCTION
		At the north end of the San Andreas fault off Cape Mendocino, three lithospheric plates (the Juan de Fuca, Pacific, and North American) meet at the Mendocino triple junction, where a trench meets two transform faults, the San Andreas and Mendocino faults.
		Along this trench to the north, the Juan de Fuca plate is subducting eastward beneath the North American plate.
		The north boundary of this window is the subducted south edge of the Juan de Fuca plate, and hot upwelling asthenospheric material presumably occupies the window.
	www.johnmartin.com /earthquakes/eqsafs/safs_936.htm (1677 words)

	platetec
		Some plates, such as the North American Plate and the Eurasian Plate, are moving together.
		The North American craton is exposed in Eastern Canada at the surface.
		When an oceanic plate subducts underneath a continental plate, some sea floor sediments are scraped off and become part of the continent on the other side of the subduction zone.
	www.scarborough.k12.me.us /high/projects/geoscience4/platetec/platetec.htm (1177 words)

	Plate Tectonics of the Western United States (Site not responding. Last check: )
		The volcanoes of the western United States are the result of subduction of the Juan de Fuca and Gorga plates beneath the edge of the North American Plate.
		The oceanic plates are made at mid-ocean ridges (spreading centers) and are denser than the North American Plate.
		The North American Plate is made of continental crust and lithospheric mantle.
	volcano.und.edu /vwdocs/volc_images/tectonic_west.html (172 words)

	PBS - Harriman: Kristine Crossen -Aleutian Volcanoes and Plate Tectonics
		PBS - Harriman: Kristine Crossen -Aleutian Volcanoes and Plate Tectonics
		This volcanic arc delineates the boundary between the Pacific and North American tectonic plates.
		As the subducted plate descends, the heat from the earth's interior causes the plate to begin melting, and buoyant liquid magma rises to the surface forming a line of volcanoes.
	www.pbs.org /harriman/explog/lectures/crossen1.html (714 words)

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