Image subduction01.jpg thumb 300px Geometry of a subduction zone insets to show accretionary wedge accretionary prism and partial melting of hydrated asthenosphere In geology , subduction is the process ... converge. These regions are known as Subduction Zones . A subduction zone is an area on Earth where two tectonic plates move towards one another and one slides under the other. Rates of subduction .... Stable subduction zones involve an oceanic plate sliding beneath either a continental plate ... may or may not be oceanic . Subduction zones are often noted for their high rates of volcanism , earthquakes .... Citation needed date May 2011 General description File SubZone.jpg thumb 300px Subduction zones mark ... brittle portion of the upper mantle . Subduction zones exist at convergent plate boundaries where one ... mantle by the downwelling convective currents. It is at subduction zones that the Earth s lithosphere ... mantle. Earth is the only planet where subduction is known to occur. Without subduction, plate tectonics could not exist. File ConMarRJS.jpg thumb 300px Subduction zones dive down into the mantle ... 60,000 km of mid ocean ridges. Subduction zones burrow deeply but are imperfectly camouflaged ... of subduction zones are known best. Subduction zones are strongly asymmetric for the first several ... and extend down to the Transition zone Earth 660 km discontinuity . Subduction zones ... who first identified this distinctive aspect. Subduction zone earthquakes occur at enormously ... crystallization . Above subduction zones, volcanoes exist in long chains called volcanic arc s. Volcanoes ... their host volcanoes in rock termed ore . Subduction results from convection in the asthenosphere. The heat ... cells meet cold mantle sinking , subduction, not convection can occur, forcing the oceanic crust ... Although the process of subduction as it occurs today is fairly well understood, its origin remains ... from an extraterrestrial source, would give the early earth the discontinuities in the crust for the subduction ... more details
The Lesser Antilles subduction zone is a convergent plate boundary on the seafloor along the eastern margin of the Lesser Antilles island arc. In this subduction zone , oceanic crust of the South American Plate is being subducted under the Caribbean Plate . References reflist http www.agu.org pubs crossref 2003 2002JB002243.shtml Deep structure of an island arc backstop, Lesser Antilles subduction zone , Christeson et al, 2003 Journal of Geophysical Research, V.108, p.2327 Category Plate tectonics Category Lesser Antilles ... more details
The Kermadec Tonga Subduction Zone is a convergent plate boundary which stretches from the North Island of New Zealand northward, and includes the Hikurangi Trough , the Kermadec Trench and the Tonga Trench . Along this zone, the Pacific Plate to the east is subducting beneath the Indo Australian Plate . The southern end of the subduction zone transitions to a right lateral moving transform fault south of the North Island called the Alpine Fault . References http www.ifm geomar.de div projects zealandia english maps.html http www.teara.govt.nz EarthSeaAndSky OceanStudyAndConservation SeaFloorGeology 2 en Category Plate tectonics tectonics stub eu Kermadec Tonga subdukzio eremua ... more details
Image JuandeFucasubduction.jpg thumb Structure of the Cascadia subduction zone Image Cascadia subduction zone USGS.png thumb Area of the Cascadia subduction zone Coord 45 124 type landmark region US dim 500km display title The Cascade Range Cascadia subduction zone also referred to as the Cascadia fault is a subduction zone , a type of convergent boundary convergent plate boundary that stretches from ... Plate moves in a general southwest direction, overriding the oceanic plate. The Cascadia Subduction Zone is where the two plates meet. Tectonic processes active in the Cascadia subduction zone region include accretion, subduction, deep earthquakes, and active volcanism that has included such notable ... geller2 cascadia.html title Cascadia Subduction Zone Volcanism in British Columbia accessdate 2008 12 18 USGS ref Major cities affected by a disturbance in this subduction zone would include Vancouver ... isbn 0878420630 edition 19th page 3 ref The width of the Cascadia subduction zone varies along its length ... here for the diagram. ref The Cascadia subduction zone runs from triple junction s at its north and south ... magnitude The Cascadia subduction zone can produce very large earthquakes megathrust earthquake ... energy for an earthquake, the transition zone, although somewhat plastic, can rupture. Great Subduction ... size is proportional to fault area, and the Cascadia Subduction Zone is a very long sloping fault ... American plates. Because of the very large fault area, the Cascadia Subduction Zone could produce ... and aseismic slip on the northern Cascadia subduction interface journal Nature journal Nature volume ... Dragert H, Wang K, James TS title A silent slip event on the deeper Cascadia subduction interface ... Episodic tremor and slip on the Cascadia subduction zone the chatter of silent slip journal Science ... rupture of the Cascadia Subduction Zone is anticipated to be capable of causing widespread destruction ... subduction zones in the world usually have such earthquakes every 100 to 200 years the longer interval ... more details
CSZ may refer to An abbreviation for city, state, and ZIP code in the United States . ComedySportz , an improvisational comedy show CSZ is the ICAO airline designator for Shenzhen Airlines Cascadia subduction zone disambig de CSZ it CSZ ... more details
The Intermontane Plate was an ancient oceanic tectonic plate that lay on the west coast of North America about 195 million years ago. The Intermontane Plate had a chain of volcanic island s called the Intermontane Islands . The Intermontane Islands had been accumulating as a volcanic chain in the Pacific Ocean since Triassic time, beginning around 245 million years ago. The volcanism records yet another subduction zone. Beneath the far edge of the Intermontane microplate, another plate called the Insular Plate was sinking. This arrangement with two parallel subduction zones is unusual. The modern Philippine Islands are located on the Philippine Mobile Belt , one of the few places on Earth where twin subduction zones exist today. Geologists call the ocean between the Intermontane islands and North America the Slide Mountain Ocean . The name comes from the Slide Mountain Terrane , a region made of rocks from the floor of the ancient ocean. The Intermontane Islands collide Over early Jurassic time, the Intermontane Islands and the Pacific Northwest drew closer together as the continent moved west and the Intermontane Microplate subducted. On the continent, subduction supported a new volcanic arc that again sent intruding granite type rocks into the ancient continental sediments. Eventually, about 180 million years ago in the middle Jurassic, the last of the microplate subducted, and the Intermontane Islands collided with the Pacific Northwest. The Intermontane Islands were too big to sink beneath the continent. The subduction zone of the Intermontane Plate shut down, ending the volcanic arc. As the Intermontane Belt accreted to the edge of the continent , the subduction zone of the Insular Plate became the active subduction zone along the edge of the continent. External links http www.washington.edu burkemuseum geo history wa The 20Omineca 20Episode.htm Burke Museum University of Washington Category Tectonic plates Category Historical tectonic plates Category Historica ... more details
Image North Bismarck Plate map fr.png thumb right 275x275px Map of the Soloman Sea Plate as Mer des Soloman and its neighboring plates in French language French The Solomon Sea Plate is a minor plate tectonics tectonic plate to the northwest of the Solomon Islands in the south Pacific Ocean , it roughly corresponds with the Solomon Sea west of Papua New Guinea. Tectonics The tectonic regime in this part of the world is extremely complex and involves a number of minor as well as major plates. The Solomon Sea Plate is an oceanic crust al plate remnant which is disappearing into two subduction zones, one to its north, the other on its southwest margin. Its southeast margin runs along the Woodlark Rise, an undefined compressive zone which may be a transform fault marking the boundary with the adjoining Woodlark Plate . The northern subduction zone is located where the Solomon Plate is diving below the South Bismarck Plate to the northwest and the Pacific Plate to the northeast. The northwest part of the subduction zone is called the New Britain Subduction Zone . New Britain in Papua New Guinea is the volcanic island formed from this collision and resulting volcanism. The southwestern subduction zone is where the Solomon Pate is diving below the Indo Australian Plate . References http walrus.wr.usgs.gov tsunami solomon07 Preliminary Analysis of the April 2007 Solomon Islands Tsunami, Southwest Pacific Ocean, USGS http www.eurekalert.org pub releases 2008 04 uota 1as040208.php Report on interplate propagation of subduction stress rupture, Solomon earthquake of 2007 Tectonic plates SE Asia plates DEFAULTSORT Solomon Sea Plate Category Geology lists Tectonic plates Category Tectonic plates Category Tectonic plates Category Geology of the Pacific Ocean tectonics stub ca Placa de la mar de Salom eu Salomon itsasoko plaka fr Plaque de la mer des Salomon ko ja pl P yta Morza Salomona ru uk zh ... more details
wiktionarypar m lange melange Melange may refer to M lange , a geological breccia above a subduction zone environment Wiener Melange , a Viennese specialty coffee, similar to cappuccino Melange fictional drug or spice, a fictional drug in Frank Herbert s Dune series disambig de Melange Begriffskl rung it Melange nl Melange ru sk Melan uk ... more details
The Lesser Antilles Volcanic Arc is a volcanic arc that forms the eastern boundary of the Caribbean plate . It is part of a subduction zone , also known as the Lesser Antilles subduction zone , where the oceanic crust of the North American Plate is being subducted under the Caribbean Plate. This subduction process formed a number of volcanic islands, from the Virgin Islands in the north to the islands off the coast of Venezuela in the south. The Lesser Antilles Volcanic Arc includes seventeen active volcanoes, notably Soufri re Hills volcano Soufriere Hills on Montserrat Mount Pel e on Martinique La Grande Soufri re on Guadeloupe Soufri re volcano Soufri re Saint Vincent on Saint Vincent island Saint Vincent and the submarine volcano Kick em Jenny which lies about 10 km north of Grenada . References reflist Macdonald, R., C.J. Hawkesworth, and E. Heath. 2000 . The Lesser Antilles volcanic chain a study in arc magmatism. Earth Science Reviews, Volume 49, Issues 1 4, March 2000, Pages 1 76. doi 10.1016 S0012 8252 99 00069 0. Christeson et al. 2003 http www.agu.org pubs crossref 2003 2002JB002243.shtml Deep structure of an island arc backstop, Lesser Antilles subduction zone . Journal of Geophysical Research, V.108, p. 2327 Category Volcanic arcs es Arco volc nico de las Antillas Menores ... more details
The Catalina Schist is a metamorphism metamorphic rock complex primarily exposed on Santa Catalina Island, California , that formed during the Cretaceous . The Catalina Schist is broadly correlated with the Franciscan Assemblage Franciscan Complex , a similar metamorphic complex formed along the California margin. ref name Rowland Rowland, Stephan M., Geology of Santa Catalina Island, California Geology, 1984 http www.grossmont.edu garyjacobson Geology 20164 Catalina CatalinaGeology.pdf ref Both of these units record Blueschist high pressure low temperature metamorphism associated with the subduction of the Farallon plate beneath North America during the Mesozoic . The Catalina Schist is differentiated from the Franciscan primarily in the style of m lange formed during subduction. References Reflist Category Geography of Los Angeles County, California Category Cretaceous geologic formations Category Schist US geology stub ... more details
The Nazca Ridge is an ocean ridge in the southern Pacific Ocean . It lies on the Nazca Plate and is being subduction subducted in the Peru Chile Trench under the South American Plate by ongoing plate motion. ref http www.cosis.net abstracts EGU05 04873 EGU05 J 04873.pdf Geomorphic Effects in Western Peru due to Subduction of the Nazca Ridge ref References reflist coord missing Category Underwater ridges of the Pacific Ocean Geology stub marine geo stub geology of Chile ca Dorsal de Nazca fr Dorsale Nazca pl Grzbiet Nazca es Dorsal de Nazca ... more details
In igneous petrology flux melting occurs when water and other volatile components are added to a hot solid rock. The ultramafic rock of the upper mantle can be melted by the addition of volatiles from below. The source of the water and volatiles is the subducting slab of oceanic crust which releases the volatiles by metamorphic dewatering into the mantle wedge overlying a subduction zone . The partial melting triggered by the incorporation of volatiles produces mafic magma which rises and igneous differentiation differentiates forming the Igneous rock igneous and volcanic rock s of the overlying volcanic arc . ref Wallace, Paul J., Volatiles in subduction zone magmas concentrations and fluxes based on melt inclusion and volcanic gas data, Journal of Volcanology and Geothermal Research 140 2005 pp. 217 240 ref References Reflist Category Petrology Category Plate tectonics petrology stub ... more details
volcanic rocks associated with the subduction zone . ref name Birkenmajer1 cite doi 10.1007 ... Peninsula occurred in three stages Pre subduction stage of marginal basin deposition, later separated by the Gondwanian orogeny during the Permian Late Triassic The middle subduction phase, characterized ... arc magmatic arcs , during the middle Jurassic Miocene . The late subduction phase, when the opening ... 2009JB006295 noedit ref Pre subduction history File Arcpentec.jpg thumb Antarctic Peninsula previous .... Both events were most likely caused by the incipient subduction of the south east Pacific ... crystalline basement rock basement . ref name Birkenmajer1 Middle subduction phase File APsubzone.jpg thumb Generalized cross section of the Antarctic Phoenix subduction zone. 1 ice sheet, 2 Mesozoic ... and rift ing in the continental margin of Gondwanaland at the onset of oceanic slab subduction. ref name Birkenmajer1 This subduction zone is described by pivoting subduction , which is due to differences ... arc. Similar to the inner magmatic arc, the outer is composed of subduction related acidic volcanism ... the development of a slab window due to the subduction of a spreading ridge or the breakup of the subducted ... rotation of the Antarctic Continent with respect to the subduction zone. ref name Birkenmajer1 Late subduction phase, opening of the Bransfield Rift File Bransrift.png thumb Development .... ref name Barker The last and most recent stage in the evolution of the Antarctic Peninsula subduction ... migration of the spreading center is attributed to the subduction of the Phoenix Plate under ... more details
in arc geochemistry can be related to the evolving architecture of that particular subduction ... D Larter, ed, 2003 Intra oceanic Subduction Systems , Geological Society of London. p207 ref Single ..., 2003 Intra oceanic Subduction Systems , Geological Society of London. p208 ref lending weight to the contention ... and Sangihe arcs, eastern Indonesia , in Robert D Larter, ed, 2003 Intra oceanic Subduction ... more details
The Alert Bay Volcanic Belt is a heavily eroded Neogene volcanic belt in northern Vancouver Island , British Columbia , Canada . The belt is now north of the Nootka Fault , but may have been directly above the geologic fault fault at the time it last erupted. Eruptions of basalt ic to rhyolite rhyolitic volcano es and hypabyssal rocks of the Alert Bay Volcanic Belt are probably linked with the subduction subducted margin flanked by the Explorer Plate Explorer and Juan de Fuca Plate Juan de Fuca plates at the Cascadia subduction zone . The Alert Bay Volcanic Belt is poorly studied, but appears to have been active in Pliocene and Pleistocene time. No Holocene eruptions are known, and volcanic activity in the belt has most likely ceased. Volcanoes The volcanoes within the belt include Haddington Island British Columbia Haddington Island Twin Peaks British Columbia Twin Peaks Cluxewe Mountain See also Portal Volcanism of Canada Garibaldi Volcanic Belt Pemberton Volcanic Belt BritishColumbiaCoast geo stub coord missing British Columbia Category Volcanism of British Columbia Category Volcanic belts Category Northern Vancouver Island Category Geography of Vancouver Island Category Miocene volcanism Category Pliocene volcanism Category Subduction volcanism ... more details
of continental crust geology crust is caught in a subduction zone with resulting overthrusting of oceanic ... sliding or transformation of a spreading ridge to a subduction zone. Most obductions appear to have initiated at back arc basins above the subduction zones during the closing of an ocean or an orogeny ..., Marseken, S.F., 2010. Obduction. VDM Verlag Dr. Mueller e.K. ref Types of obductions Upwedging in subduction zones This process is operative beneath and behind the inner walls of oceanic trenches subduction ... Figure 1.tif thumb Figure 1 A, B, C. Obduction of an ophiolite sheet by the partial subduction of an Atlantic ... follow from the development of a subduction zone near the continental margin shown in figure 1A. Above and behind the subduction zone, a welt of oceanic crust and mantle rides up over the descending plate. The ocean, intervening between the continental margin and the subduction zone is progressively swallowed until the continental margin arrives at the subduction zone and a giant wedge or slice ... of the relatively light continental crust is likely to prohibit its extensive subduction, a flip in subduction polarity will occur yielding an ophiolite sheet lying above a descending plate. Fig 1C ... the subduction zone, a fully developed arc and back arc basin Fig 1D may eventually arrive and collide ... arc assemblage Fig 1E, 1F and may be followed by flipping the subduction polarity. Fig 1G According .... Transformation of a spreading ridge to a subduction zone Many ophiolite complexes were emplaced ... in press ref The change from a spreading plate boundary to a subduction plate boundary may result ... compression fields could become subduction zones, the side with the higher, hotter, thinner lithosphere ..., v. 31, p.93 120. ref Interference of a spreading ridge and a subduction zone File Figure4.tif ... of a subduction zone and a spreading ridge. 1 continental crust, 2 oceanic crust, 3 mantle, 4 oceanic ... where a spreading approaches a subduction zone, the ridge collides with the subduction ... more details
Episodic tremor and slip ETS is a seismology seismological phenomenon observed in some subductionsubduction ... of crustal motion, although the fault motion remains consistent with the direction of subduction ... earthquake sources.png thumb upright 1.75 Structure of the Cascadia subduction zone. The Juan de ... region of the Cascadia subduction zone . ETS events in Cascadia were observed to reoccur cyclically ... tremor and slip on the Cascadia subduction zone the chatter of silent slip , Science , 300 5627 ... mode in the Cascadia region, slow slip and tremor have been detected in other subduction zones around ... . ref Slow slip is not accompanied by tremor in the Hikurangi Trench Hikurangi Subduction ... but no tremor accompanying slow slip in the Hikurangi subduction zone, New Zealand , Earth and Planetary ... Subduction Zone. In the Cascadia subduction zone, the Juan de Fuca Plate , a relict of the ancient ... as it is dragged by the subduction process. Geodesy Geodetic measurements show periodic reversals ... slip events . Slow slip events have been observed to occur in the Cascadia, Japan, and Mexico subduction ... slow slip events occur in subduction zones, their relationship to megathrust earthquakes is of economic ... transients along the Oaxaca subduction segment from 1993 to 2007 , Geophysical Journal International ... for the next great earthquake on the Cascadia subduction zone , Bulletins of the Seismological .... Rokosky 2007 , Slow slip events and seismic tremor at circum Pacific subduction zones , Reviews ... as in subduction zones, tremor has been detected in transform faults such as the San Andreas Fault ... . ref In both the Cascadia and Nankai Trough Nankai subduction zones, slow slip events ... Japan subduction zone , Geophysical Research Letters , 31 23 , L23,602, http dx.doi.org 10.1029 2004GL020848 doi 10.1029 2004GL020848 . ref In the Cascadia subduction zone, slip events and seismological ... not extend to the Mexican subduction zone. ref name Payero2008 Payero, J., V. Kostoglodov, N. Shapiro ... more details
Cascadia , a term that derives from the Cascade Range , may refer to Regional The Pacific Northwest Cascadia independence movement Places Cascadia, Oregon Cascadia State Park in Cascadia Cascadia, Washington Other 1700 Cascadia earthquake Cascadia , a former plant genus now included in Saxifraga Cascadia Center for Regional Development, a project of the Discovery Institute Cascadia Community College Cascadia subduction zone Cascadia Wildlands Cascadian may refer to Cascadian train See also Cascada disambiguation disambig de Cascadia es Cascadia ... more details
orphan date March 2010 Unreferenced date November 2006 The Charcot Plate was a fragment of the Phoenix Plate . The Charcot Plate is subduct ing under West Antarctica . The subduction of the Charcot Plate stopped before 83 Ma, and became fused onto the Antarctic Peninsula . There are remnants of the western part of the Charcot Plate in the Bellingshausen Sea . Category Historical tectonic plates Category Cretaceous Category Cenozoic Category Natural history of Antarctica Tectonics stub Palaeo geo stub uk ... more details
Earthquakes Unreferenced date May 2007 An interplate earthquake is an earthquake that occurs at the boundary between two tectonic plate s. If one plate is trying to move past the other, they will be locked until sufficient stress builds up to cause the plates to slip relative to each other. The slipping process creates an earthquake with land deformations and resulting seismic wave s which travel through the Earth and along the Earth s surface. Relative plate motion can be lateral as along a transform fault boundary or vertical if along a convergent subduction boundary or a rift geology rift at a divergent boundary. At a subduction boundary the motion is due to one plate slipping beneath the other plate resulting in an interplate thrust or megathrust earthquake . Some areas of the world that are particularly prone to such events include the west coast of North America especially California and Alaska , the northeastern Mediterranean region Greece , Italy , and Turkey in particular , Iran , New Zealand , Indonesia , Japan , and parts of China . See also Intraplate earthquake Fault mechanics Category Plate tectonics Category Types of earthquake tectonics stub it Terremoti tettonici pt Sismo interplacas ... more details
The Okhotsk Chukotka Volcanic Belt OCVB is a Cretaceous volcanic belt in northeastern Eurasia . It is one of the largest subduction zone related volcanic provinces in the world, stretching some 3200 km and comprising about 2 million km sup 3 sup of volcanic and plutonic material. The volcanism within the volcanic belt was related to the subduction of the ancient Kula Plate , which moved in a northward direction about 55 million years ago. References http sbmg.geol.msu.ru pp Tikhomirov Ocvb2 text final.htm New 40Ar 39Ar ages of Cretaceous continental volcanics from central Chukotka implications for initiation and duration of volcanism within northern part of the Okhotsk Chukotka Volcanic Belt northeastern Eurasia , by V. O. Ispolatov, P. L. Tikhomirov, M. Heizler, and I. Yu. Cherepanova. FarEast Russia geo stub coord missing Russia Category Volcanic belts Category Geology of Russia ... more details
The Gambier Group is an Early Cretaceous aged geologic group in the southern Coast Mountains of British Columbia , Canada . It was formed on the easternmost point of the Wrangellia Terrane as a volcanic arc about 100 million years ago along a west to southwest dipping subduction subduction zone . ref cite journal title Geochemical polarity of the Early Cretaceous Gambier Group, southern Coast Belt, British Columbia publisher NRC Research Press last Lynch first Gregory url http rparticle.web p.cisti.nrc.ca rparticle AbstractTemplateServlet?calyLang eng&journal cjes&volume 32&year 1995&issue 6&msno e95 058 date 2010 02 16 accessdate 2010 02 16 ref This prehistoric volcanic arc is generally referred to as the Gambier arc or Gambier volcanic arc . See also Portal Volcanism of Canada Volcanism of Western Canada Flute Summit British Columbia Flute Summit Piccolo Summit Whistler Mountain References reflist coord missing British Columbia Category Volcanism of British Columbia Category Cretaceous volcanism Category Volcanic arcs Category Volcanic groups BritishColumbiaCoast geo stub ... more details
Slab suction forces are one of the major plate tectonics plate tectonic driving forces. Slab suction occurs when a Subduction subducting Slab geology slab drives flow in the nearby Mantle geology mantle . This flow then exerts shear Traction vector tractions on nearby plates. This driving force is important when the slabs or portions thereof are not strongly attached to the rest of their respective tectonic plate. They cause both the subducting and overriding plate to move towards the subduction zone. ref name ConradLithgow cite journal doi 10.1126 science.1074161 title How Mantle Slabs Drive Plate Tectonics year 2002 last1 Conrad first1 C. P. journal Science volume 298 issue 5591 pages 207 209 pmid 12364804 last2 Lithgow Bertelloni first2 C bibcode 2002Sci...298..207C ref References references Category Tectonics tectonics stub ... more details
In plate tectonics , a convergent boundary , also known as a destructive plate boundary because of subduction , is an actively deforming region where two or more tectonic plates or fragments of lithosphere move toward one another and collide. As a result of pressure, friction, and plate material melting in the Mantle geology mantle , earthquakes and volcano es are common near convergent boundaries. When two plates move towards one another, they form either a subduction zone or a continental collision . This depends on the nature of the plates involved. In a subduction zone, the subducting plate, which is normally a plate with oceanic crust, moves beneath the other plate, which can be made of either oceanic or continental crust. During collisions between two continental plates, large mountain ... underneath because of the greater buoyancy of the continental lithosphere, forming a subduction zone ... range on the continental side. An example of a continental oceanic subduction zone is the area ... with this type of volcanic orogeny mountain building from the subduction of the Nazca Plate. In North ... or in some cases one plate delves called subduction, under the other. Either action will create extensive ... to subduction or compression. Not all plate boundaries are easily defined. Some are broad belts ... Ocean. Convergent margins A subduction zone is formed at a convergent plate boundary when ... , and as this plate moves further down into the subduction zone, much of the water contained ... that is forming the Himalayas . subduction of the northern part of the Pacific Plate and the NW North American Plate that is forming the Aleutian Islands . subduction of the Nazca Plate beneath the South American Plate to form the Andes . subduction of the Pacific Plate beneath the Indo Australian Plate Australian Plate , and vice Versa forming the complex New Zealand to New Guinea subduction transform ... in Turkey . Mariana Trench subduction of the Juan de Fuca Plate beneath the North American Plate. Other ... more details
Encyclopedia
top
