20:
93:, although the rate of volcanism at the two chains are relatively different by 50% with volcanic activity at each seamount location being shorter in the Louisville seamounts at about 4 million years compared to more like 6 million years. The Louisville Ridge has a relatively small bend compared to that in the Hawaiian-Emperior chain. During the Early
117:, arguing against this, although other factors mean their linkage may still be possible. One other factor is compositional studies which would suggest that only part of the Ontong Java Plateau that separated quite early is related to the Louisville hotspot. The compositional studies also define that the hot spot
101:
rate, and had a lower total volume in eruption. During the Late
Oligocene, the magma source decreased to a small fraction of that in the Hawaiian-Emperor seamount chain, such that none of the volcanoes has emerged above sea level in the past 11 million years. The Louisville Ridge is only half as wide
290:
Koppers, Anthony A. P.; Yamazaki, Toshitsugu; Geldmacher, Jörg; Gee, Jeffrey S.; Pressling, Nicola; Koppers, Anthony A. P.; Yamazaki, Toshitsugu; Geldmacher, Jörg; Gee, Jeffrey S. (2012-11-25). "Limited latitudinal mantle plume motion for the
Louisville hotspot".
336:"High-Resolution 40Ar/39Ar Geochronology of the Louisville Seamounts IODP Expedition 330 Drill Sites: Implications for the Duration of Hot Spot-related Volcanism and Age Progressions"
89:
The
Louisville hotspot is believed to have been active since at least 78.8 ± 1.3 Ma based on age of the oldest seamount (Osbourn). This duration is comparable to that of the
381:
Antretter, M.; Riisager, P.; Hall, S.; Zhao, X.; Steinberger, B. (2004). "Modelled palaeolatitudes for the
Louisville hot spot and the Ontong Java Plateau".
102:
as the
Hawaiian-Emperior seamount chain. Therefore, unlike the Hawaii hotspot, the Louisville hotspot is believed to have decreased in activity with time.
233:
Koppers, Anthony A. P.; Gowen, Molly D.; Colwell, Lauren E.; Gee, Jeffrey S.; Lonsdale, Peter F.; Mahoney, John J.; Duncan, Robert A. (December 2011).
815:
113:, around 120 million years ago. The modelled locations of the plateau and hotspot at the time do not coincide under one recent
484:
135:
192:
90:
417:
Vanderkluysen, L.; Mahoney, J. J.; Koppers, A. A.; Beier, C.; Regelous, M.; Gee, J. S.; Lonsdale, P. F. (2014).
235:"New 40Ar/39Ar age progression for the Louisville hot spot trail and implications for inter-hot spot motion"
335:
74:
chains on Earth, stretching some 4,300 km (2,672 mi) from the
Pacific-Antarctic Ridge to the
661:
796:
633:
419:"Louisville Seamount Chain: Petrogenetic processes and geochemical evolution of the mantle source"
55:
618:
477:
382:
610:
182:
79:
23:
The
Louisville hotspot, marked 23 on this map, is the southernmost one in the Pacific Ocean.
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671:
557:
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246:
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316:
264:
188:
145:
121:
produces a distinct alkali basalt compared to the eruptives from the Hawaii hotspot.
35:
276:
209:
780:
742:
623:
438:
388:
387:. Special Publications. Vol. 229. London: Geological Society. pp. 21–30.
355:
308:
254:
155:
130:
67:
39:
392:
775:
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684:
595:
567:
509:
501:
150:
110:
208:
Vanderkluysen, L.; Mahoney, J. J.; Koppers, A. A.; Lonsdale, P. F. (Fall 2007).
722:
679:
651:
585:
577:
537:
514:
98:
16:
Volcanic hotspot that formed the
Louisville Ridge in the southern Pacific Ocean
97:
period, the
Louisville hotspot's magma source rate was much steadier than the
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71:
32:
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118:
289:
462:
19:
38:
responsible for the volcanic activity that has formed the
380:
54:
The
Louisville hotspot is believed to lie close to the
232:
211:
Geochemical Evolution of the Louisville Seamount Chain
58:, although its exact present location is uncertain.
412:
410:
105:The Louisville hotspot may have helped create the
807:
407:
384:Origin and Evolution of the Ontong Java Plateau
184:Mantle Plumes and Their Record in Earth History
478:
333:
201:
485:
471:
187:. Cambridge University Press. p. 19.
442:
334:Heaton, D. E.; Koppers, A. A. P. (2019).
327:
258:
374:
66:The Louisville hotspot has produced the
18:
808:
180:
466:
61:
423:Geochemistry, Geophysics, Geosystems
340:Geochemistry, Geophysics, Geosystems
239:Geochemistry, Geophysics, Geosystems
176:
174:
172:
13:
158:the oldest of the Louisville Ridge
136:Christmas Island Seamount Province
14:
827:
169:
91:Hawaiian-Emperor seamount chain
283:
226:
214:. American Geophysical Union.
70:, which is one of the longest
1:
816:Hotspots of the Pacific Ocean
393:10.1144/GSL.SP.2004.229.01.03
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492:
78:where it subducts under the
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10:
832:
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698:
670:
642:
609:
576:
528:
500:
222:. Abstract no. #V42B-06.
181:Condie, Kent C. (2001).
56:Pacific-Antarctic Ridge
109:, the world's largest
24:
791:Proposed mechanisms:
611:Indo-Australian Plate
80:Indo-Australian Plate
22:
768:South American Plate
672:North American Plate
444:10.1002/2014GC005288
360:10.1029/2018GC007759
260:10.1029/2011gc003804
115:plate reconstruction
435:2014GGG....15.2380V
352:2019GGG....20.4073H
305:2012NatGe...5..911K
251:2011GGG....12.AM02K
220:2007AGUFM.V42B..06V
107:Ontong Java Plateau
62:Geological history
29:Louisville hotspot
25:
803:
802:
293:Nature Geoscience
146:Rarotonga hotspot
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346:(8): 4073–4102.
331:
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313:10.1038/ngeo1638
287:
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199:
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156:Osbourn Seamount
131:Louisville Ridge
68:Louisville Ridge
42:in the southern
40:Louisville Ridge
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830:
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820:
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762:
694:
666:
638:
605:
572:
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502:Antarctic Plate
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461:
460:
429:(6): 2380-400.
415:
408:
379:
375:
332:
328:
299:(12): 911–917.
288:
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231:
227:
206:
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151:Hollister Ridge
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111:oceanic plateau
82:as part of the
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52:
17:
12:
11:
5:
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662:Juan Fernández
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621:
619:East Australia
615:
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578:Eurasian Plate
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193:
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99:Hawaii hotspot
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51:
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15:
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6:
4:
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729:
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700:Pacific Plate
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533:
531:
530:African Plate
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194:0-521-01472-7
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141:Arago hotspot
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84:Pacific Plate
81:
77:
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59:
57:
47:
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44:Pacific Ocean
41:
37:
34:
30:
21:
797:Plate theory
793:Mantle plume
727:
558:Sierra Leone
426:
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376:
343:
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329:
296:
292:
285:
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183:
104:
88:
76:Tonga Trench
65:
53:
28:
26:
690:Yellowstone
644:Nazca Plate
543:New England
245:(12): n/a.
728:Louisville
563:St. Helena
163:References
748:Rarotonga
738:Marquesas
733:Macdonald
657:Galápagos
634:Lord Howe
629:Tasmantid
601:Jan Mayen
520:Kerguelen
453:128524309
401:129116505
368:198407241
321:1752-0894
269:1525-2027
95:Oligocene
810:Category
781:Trindade
743:Pitcairn
624:Crosgove
494:Hotspots
277:55376246
125:See also
72:seamount
50:Location
33:volcanic
776:Noronha
758:Society
685:Bermuda
596:Iceland
568:Tristan
548:RĂ©union
510:Balleny
431:Bibcode
348:Bibcode
301:Bibcode
247:Bibcode
216:Bibcode
36:hotspot
723:Hawaii
680:Anahim
652:Easter
586:Azores
538:Canary
515:Erebus
451:
399:
366:
319:
275:
267:
191:
753:Samoa
713:Bowie
708:Arago
591:Eifel
553:Shona
449:S2CID
397:S2CID
364:S2CID
273:S2CID
119:magma
31:is a
718:Cobb
317:ISSN
265:ISSN
189:ISBN
27:The
439:doi
389:doi
356:doi
309:doi
255:doi
86:.
812::
795:·
447:.
437:.
427:15
425:.
421:.
409:^
395:.
362:.
354:.
344:20
342:.
338:.
315:.
307:.
295:.
271:.
263:.
253:.
243:12
241:.
237:.
171:^
46:.
486:e
479:t
472:v
455:.
441::
433::
403:.
391::
370:.
358::
350::
323:.
311::
303::
297:5
279:.
257::
249::
218::
197:.
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