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beneath the Tonga forearc. This implies that the subduction of the volcanoes compared to normal sediment has a significant impact in terms of normal relief of stress but it is unclear if the subducted volcanoes relieve it as suggested by some or increase it. Further the change in trend if the subducted
Louisville chain compared to present is backed up by compositional analysis of recent arc volcanism as the volcanics from the Louisville chain are recycled. The Osbourn Seamount is the same age as the
617:
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2 km (1.2 mi) north-west of the
Osbourn Seamount has been interpreted as the currently subducting portion of the Louisville chain, but this continuation is not aligned with the existent chain. Whatever the area of subduction of the Louisville chain is associated with a relative seismic gap
221:
because of the oblique angle between the trench and the
Louisville chain. This further shortens the seamount's lifespan. The flat top of the seamount is currently tilting down toward the trench because the seamount is sitting on the edge of the trench where the Australian Plate is being bent by
519:
Hawkins, J. W.; Lonsdale, P. F.; Batiza, R. (1987). "Petrologic
Evolution of the Louisville Seamount Chain". In Keating, B. H.; Fryer, P.; Batiza, R.; Boehlert, G. W. (eds.).
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trenches once it is carried into the trenches by the ongoing plate motion. The trench-chain collision zone is moving southward at a rate of 200 km (120 mi)/
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Koppers, Anthony A. P.; Gowen, Molly D.; Colwell, Lauren E.; Gee, Jeffrey S.; Lonsdale, Peter F.; Mahoney, John J.; Duncan, Robert A. (December 2011).
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Timm, C.; Bassett, D.; Graham, I. J.; Leybourne, M. I.; De Ronde, C. E.; Woodhead, J.; Layton-Matthews, D.; Watts, A. B. (2013).
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238:, and a clockwise bend in the Louisville chain near Osbourn is similar to the Detroit-Meiji bend in the Hawaii–Emperor chain.
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404:"Seismic velocity structure and deformation due to the collision of the Louisville Ridge with the Tonga-Kermadec Trench"
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523:. Geophysical Monograph Series. Vol. 43. Washington, D. C.: American Geophysical Union. pp. 235–254.
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274:"New 40Ar/39Ar age progression for the Louisville hot spot trail and implications for inter-hot spot motion"
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556:"Louisville seamount subduction and its implication on mantle flow beneath the central Tonga–Kermadec arc"
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Stratford, W.; Peirce, C.; Paulatto, M.; Funnell, M.; Watts, A. B.; Grevemeyer, I.; Bassett, D. (2015).
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476:"Slab pull effects from a flexural analysis of the Tonga and Kermadec Trenches (Pacific Plate)"
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which is currently located 4,300 km (2,700 mi) away near the
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The westernmost and oldest unsubducted seamount of the
Louisville Ridge
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This article about a specific oceanic location or ocean current is a
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Garcia-Castellanos, D.; Torne, M.; Fernandez, M. (2000).
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234:(75.8±0.6 Ma), one of the oldest of the
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182:. It is the westernmost and oldest
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343:"Subsea mountains' 'march to ruin'"
329:Hawkins, Lonsdale & Batiza 1987
627:. You can help Knowledge (XXG) by
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483:Geophysical Journal International
411:Geophysical Journal International
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504:10.1046/j.1365-246x.2000.00096.x
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679:Seamounts of the Pacific Ocean
521:Seamounts, islands, and atolls
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341:Shukman, David (2011-12-06).
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447:, Discussion and Figure 5
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200:Pacific-Antarctic Ridge
699:Marine geography stubs
694:Polygenetic volcanoes
563:Nature Communications
689:Cretaceous volcanoes
299:10.1029/2011gc003804
575:2013NatCo...4.1720T
529:1987GMS....43..235H
495:2000GeoJI.141..479G
290:2011GGG....12.AM02K
225:A bathymetric high
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584:10.1038/ncomms2702
537:10.1029/GM043p0235
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629:expanding it
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222:subduction.
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284:(12): n/a.
184:unsubducted
157:Age of rock
109: /
84:Coordinates
668:Categories
392:, Figure 5
352:2018-06-15
331:, Abstract
242:References
207:subduction
106:26°S 175°W
19:See also:
308:1525-2027
139:Volcanic
111:-26; -175
598:19 March
593:23591887
569:: 1720.
347:BBC News
316:55376246
215:Kermadec
176:seamount
72:Location
67:Location
571:Bibcode
525:Bibcode
510:9 April
491:Bibcode
467:Sources
368:, 14:38
286:Bibcode
209:in the
122:Geology
674:Guyots
591:
543:
430:21 May
380:, 4:12
314:
306:
75:South
54:South
559:(PDF)
479:(PDF)
407:(PDF)
312:S2CID
247:Notes
211:Tonga
174:is a
145:chain
133:Guyot
97:175°W
625:stub
600:2017
589:PMID
541:ISBN
512:2017
432:2023
304:ISSN
213:and
170:The
128:Type
94:26°S
579:doi
533:doi
499:doi
487:141
419:doi
415:200
294:doi
141:arc
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282:12
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227:c.
219:Ma
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192:Ma
163:Ma
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