28:
20:
97:, the process by which one plate is forced under the other when two plates collide. The plate which is being forced down, the subducted plate, is pushed against the upper, over-riding plate. Sediment on the ocean floor of the subducting plate is often scraped off as the plate descends. This accumulated material is called an
131:
than the rocks making up the majority of continental crust. Island arcs and other volcanic rocks are also lower in density than the oceanic crust, and are therefore not easily subducted along with the oceanic crust that surrounds them. Instead, these less-dense bits of crust will collide with
101:(or accretionary prism), which is pushed against and attaches to the upper plate. In addition to accumulated ocean sediments, volcanic island arcs or seamounts present on the subducting plate may be amalgamated onto existing
382:
Moore, G. F.; Shipley, T. H.; Stoffa, P. L.; Karig, D. E.; Taira, A.; Kuramoto, S.; Tokuyama, H.; Suyehiro, K. (1990). "Structure of the Nankai Trough
Accretionary Zone from multichannel seismic reflection data".
468:
Chaumillon, Eric; Mascle, Jean (1997). "From foreland to forearc domains: New multichannel seismic reflection survey of the
Mediterranean ridge accretionary complex (Eastern Mediterranean)".
132:
existing continental crust on the upper plate once the oceanic crust separating them is completely subducted. Most continents are composed of multiple accreted "
212:. National Geographic Book Service., National Geographic Society (U.S.) (Rev. ed.). Washington, D.C.: National Geographic Society.
447:
325:
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beneath the
Eurasian Plate). These examples of accreted terranes also all include accretionary wedges.
428:"21 - The Barbados ridge: A mature accretionary wedge in front of the Lesser Antilles active margin"
517:
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Continental crust differs significantly from oceanic crust. Oceanic crust is primarily composed of
477:
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8:
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Geological process by which material is added to a tectonic plate at a subduction zone
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118:
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Terranes. Accreted terranes along modern subduction plate boundaries include the
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90:
76:
426:
Deville, Eric; Mascle, Alain (2012-01-01), Roberts, D. G.; Bally, A. W. (eds.),
136:", pieces of low-density continental crust with different origins. For example,
31:
Stages of accretion through time with accretionary wedge and volcanic island arc
168:
44:
245:. Maestro, Giulio (1st ed.). New York: Lothrop, Lee & Shepard Books.
511:
497:
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335:
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Earth structure : an introduction to structural geology and tectonics
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Oceanic-continental convergence and creation of accretionary wedge
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is made up of multiple accreted terranes that collided with the
19:
432:
Regional
Geology and Tectonics: Principles of Geologic Analysis
124:
351:"Tectonic model for the Proterozoic growth of North America"
105:
on the upper plate, increasing the continental landmass.
243:
Our patchwork planet : the story of plate tectonics
381:
282:
240:
348:
207:
349:Whitmeyer, Steven J.; Karlstrom, Karl E. (2007).
316:Davies, Geoffrey F. (Geoffrey Frederick) (2011).
283:Van der Pluijm, Ben A.; Marshak, Stephen (2004).
89:Accretion involves the addition of material to a
51:, frequently on the edge of existing continental
509:
467:
425:
43:is a process by which material is added to a
385:Journal of Geophysical Research: Solid Earth
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320:. Cambridge: Cambridge University Press.
26:
18:
287:(2nd ed.). New York: W.W. Norton.
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55:. The added material may be sediment,
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175:in the Caribbean (subduction of the
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440:10.1016/b978-0-444-53042-4.00021-2
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318:Mantle convection for geologists
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434:, Elsevier, pp. 580–607,
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309:
234:
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1:
490:10.1016/s0025-3227(97)00002-9
241:Sattler, Helen Roney (1995).
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163:of Japan (subduction of the
7:
210:Exploring our living planet
208:Ballard, Robert D. (1988).
161:Nankai accretionary complex
127:rocks, which have a higher
67:or other igneous features.
10:
534:
142:Laurentian proto-continent
112:
74:
405:10.1029/JB095iB06p08753
32:
24:
30:
22:
181:North American Plate
482:1997MGeol.138..237C
397:1990JGR....95.8753M
187:(subduction of the
185:Mediterranean Ridge
368:10.1130/GES00055.1
157:Grenville Province
109:Continent building
99:accretionary wedge
85:Accretionary wedge
33:
25:
449:978-0-444-53042-4
391:(B6): 8753–8765.
327:978-0-511-99304-6
119:Geologic province
103:continental crust
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502:
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476:(3–4): 237–259.
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165:Philippine Plate
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518:Plate tectonics
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177:Caribbean Plate
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77:Plate tectonics
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49:subduction zone
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470:Marine Geology
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361:(4): 220–259.
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173:Barbados Ridge
169:Eurasian Plate
144:, such as the
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91:tectonic plate
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45:tectonic plate
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189:African Plate
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138:North America
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65:oceanic crust
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57:volcanic arcs
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453:, retrieved
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179:beneath the
167:beneath the
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183:), and the
146:Proterozoic
71:Description
455:2020-03-09
195:References
113:See also:
95:subduction
81:Subduction
75:See also:
53:landmasses
498:0025-3227
413:2156-2202
355:Geosphere
336:705368249
61:seamounts
41:accretion
512:Category
303:53231817
261:21372888
228:18325626
153:Mazatzal
134:terranes
125:basaltic
478:Bibcode
393:Bibcode
171:), the
149:Yavapai
129:density
115:Terrane
37:geology
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155:, and
83:, and
47:at a
494:ISSN
444:ISBN
409:ISSN
332:OCLC
322:ISBN
299:OCLC
289:ISBN
257:OCLC
247:ISBN
224:OCLC
214:ISBN
117:and
93:via
486:doi
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230:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
