South Kermadec Ridge Seamounts: Difference between revisions

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Coordinates: 35°30′S 178°12′E / 35.5°S 178.2°E / -35.5; 178.2
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The '''South Kermadec Ridge Seamounts''' are a continuation of the [[volcano|volcanic]] [[island arc]],<ref>{{cite journal |last1=Wright | first1 = I. C. |title=Nature and tectonic setting of the southern Kermadec submarine arc volcanoes: An overview |journal=Marine Geology |date=1994 |volume=118 |issue=3–4 |pages=217–236 |url =https://www.sciencedirect.com/science/article/abs/pii/002532279490085X | access-date = 5 June 2022 |doi=10.1016/0025-3227(94)90085-X}}</ref> formed at the [[convergent boundary]] where the [[Pacific Plate]] subducts under the [[Indo-Australian Plate]]. The subducting Pacific Plate created the [[Kermadec Trench]],<ref>{{Cite journal| last1 = Billen | first1 = M. I.| last2 = Gurnis | first2 = M.| title = Constraints on subducting plate strength within the Kermadec trench| year = 2005 | journal = Journal of Geophysical Research: Solid Earth | volume = 110 | issue = B5|doi = 10.1029/2004JB003308 | bibcode = 2005JGRB..110.5407B| doi-access = free }}</ref> the second deepest [[submarine trench]],<ref>{{Cite web| title = Deep-Sea Vehicle Nereus Lost 6 Miles Down | publisher = [[National Geographic]]| url = https://www.nationalgeographic.com/science/article/140512-nereus-deep-sea-vehicle-lost-ocean-technology-science | access-date = 5 June 2022}}</ref> to the east of the islands. The [[seamounts]] lie along the western aspect of the undersea Kermadec Ridge, which runs southwest from the [[Kermadec Islands]] towards the [[North Island]] of [[New Zealand]] and northeast towards [[Tonga]] ([[Kermadec-Tonga Arc]]).
The '''South Kermadec Ridge Seamounts''' are a continuation of the [[volcano|volcanic]] [[island arc]],<ref>{{cite journal |last1=Wright | first1 = I. C. |title=Nature and tectonic setting of the southern Kermadec submarine arc volcanoes: An overview |journal=Marine Geology |date=1994 |volume=118 |issue=3–4 |pages=217–236 |url =https://www.sciencedirect.com/science/article/abs/pii/002532279490085X | access-date = 5 June 2022 |doi=10.1016/0025-3227(94)90085-X}}</ref> formed at the [[convergent boundary]] where the [[Pacific Plate]] subducts under the [[Indo-Australian Plate]]. The subducting Pacific Plate created the [[Kermadec Trench]],<ref>{{Cite journal| last1 = Billen | first1 = M. I.| last2 = Gurnis | first2 = M.| title = Constraints on subducting plate strength within the Kermadec trench| year = 2005 | journal = Journal of Geophysical Research: Solid Earth | volume = 110 | issue = B5|doi = 10.1029/2004JB003308 | bibcode = 2005JGRB..110.5407B| doi-access = free }}</ref> the second deepest [[submarine trench]],<ref>{{Cite web| title = Deep-Sea Vehicle Nereus Lost 6 Miles Down | publisher = [[National Geographic]]| url = https://www.nationalgeographic.com/science/article/140512-nereus-deep-sea-vehicle-lost-ocean-technology-science | access-date = 5 June 2022}}</ref> to the east of the islands. The [[seamounts]] lie along the western aspect of the undersea Kermadec Ridge, which runs southwest from the [[Kermadec Islands]] towards the [[North Island]] of [[New Zealand]] and northeast towards [[Tonga]] ([[Kermadec-Tonga Arc]]).


This area of the Kermadec Arc - Havre Trough is a relatively young oceanic arc-back-arc system as it became active in the [[Quaternary]].<ref name="Zohrab2016">{{cite web|
This area of the Kermadec Arc - [[Havre Trough]] is a relatively young oceanic arc-back-arc system as it became active in the [[Quaternary]].<ref name="Zohrab2016">{{cite web|
title= The Petrology, Geochemistry and Geochronology of Back-Arc Stratovolcanoes in the Southern Kermadec Arc-Havre Trough, SW Pacific|
title= The Petrology, Geochemistry and Geochronology of Back-Arc Stratovolcanoes in the Southern Kermadec Arc-Havre Trough, SW Pacific|
first1=Alexander |
first1=Alexander |
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* Kibblewhite Seamount {{convert|-990|m|0}}{{coord|34.5762|S|179.262|E|type:mountain|name=Kibblewhite Seamount}}<ref name="VLIMAR"/>
* Kibblewhite Seamount {{convert|-990|m|0}}{{coord|34.5762|S|179.262|E|type:mountain|name=Kibblewhite Seamount}}<ref name="VLIMAR"/>
* Gill Seamount {{convert|-1200|m|0}} {{coord|34.62|S|178.375|E|type:mountain|name=Gill Seamount}}
* Gill Seamount {{convert|-1200|m|0}} {{coord|34.62|S|178.375|E|type:mountain|name=Gill Seamount}}
**Situated in the middle of a deep basin (3000m deep) to the west of Kibblewhite and actually closer to the [[Lau-Colville Ridge]] than the [[Kermadec Ridge]]<ref name="Zohrab2016"/>
**Situated in the middle of a deep basin (3000m deep) in the Havre Trough, to the west of Kibblewhite and actually closer to the [[Lau-Colville Ridge]] than the [[Kermadec Ridge]]<ref name="Zohrab2016"/>
**Basalt age 1.1 ± 0.4 Ma<ref>{{cite journal|first1=Richard |last1=Wysoczanski|first2=Graham |last2=Leonard|first3=James |last3=Gill|first4=Ian |last4=Wright|first5=Andrew|last5=Calvert|first6= William |last6=McIntosh|first7=Brian |last7=Jicha|first8=John |last8=Gamble|first9=Christian |last9=Timm|first10= Monica |last10=Handler|first11=Elizabeth |last11=Drewes-Todd |first12=Alex |last12=Zohrab |year=2019|title= Ar-Ar age constraints on the timing of HavreTrough opening and magmatism|journal= New Zealand Journal of Geology and Geophysics|doi=10.1080/00288306.2019.1602059|url=https://www.researchgate.net/publication/334050397_Ar-Ar_age_constraints_on_the_timing_of_Havre_Trough_opening_and_magmatism/download}}</ref>
* Yokosuka Seamount {{convert|-1060|m|0}} {{coord|34.7|S|178.57|E|type:mountain|name=Yokosuka Seamount}}
* Yokosuka Seamount {{convert|-1060|m|0}} {{coord|34.7|S|178.57|E|type:mountain|name=Yokosuka Seamount}}
**To west of Brothers situated on an elevated basal plateau (2500m deep)<ref name="Zohrab2016"/>
**To west of Brothers situated on an elevated basal plateau (2500m deep)<ref name="Zohrab2016"/>

Revision as of 00:15, 19 June 2023

South Kermadec Ridge Seamounts
Bathymetry of the Kermadec volcanic island arc and surrounding areas
Map
Location
LocationSouth Pacific Ocean
Coordinates35°30′S 178°12′E / 35.5°S 178.2°E / -35.5; 178.2
Geology
TypeSeamount chain

The South Kermadec Ridge Seamounts are a continuation of the volcanic island arc,[1] formed at the convergent boundary where the Pacific Plate subducts under the Indo-Australian Plate. The subducting Pacific Plate created the Kermadec Trench,[2] the second deepest submarine trench,[3] to the east of the islands. The seamounts lie along the western aspect of the undersea Kermadec Ridge, which runs southwest from the Kermadec Islands towards the North Island of New Zealand and northeast towards Tonga (Kermadec-Tonga Arc).

This area of the Kermadec Arc - Havre Trough is a relatively young oceanic arc-back-arc system as it became active in the Quaternary.[4] The seamounts include:[5][4][6][7]

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Map
Map of South Kermadec Ridge Seamounts. It is possible by clicking on map to enable mouseover of names.

References

  1. ^ Wright, I. C. (1994). "Nature and tectonic setting of the southern Kermadec submarine arc volcanoes: An overview". Marine Geology. 118 (3–4): 217–236. doi:10.1016/0025-3227(94)90085-X. Retrieved 5 June 2022.
  2. ^ Billen, M. I.; Gurnis, M. (2005). "Constraints on subducting plate strength within the Kermadec trench". Journal of Geophysical Research: Solid Earth. 110 (B5). Bibcode:2005JGRB..110.5407B. doi:10.1029/2004JB003308.
  3. ^ "Deep-Sea Vehicle Nereus Lost 6 Miles Down". National Geographic. Retrieved 5 June 2022.
  4. ^ a b c d e f g Zohrab, Alexander (2016). "The Petrology, Geochemistry and Geochronology of Back-Arc Stratovolcanoes in the Southern Kermadec Arc-Havre Trough, SW Pacific".
  5. ^ Ballance, Peter F.; Ablaev, Albert G.; Pushchin, Igor K; Pletnev, Sergei P.; Birylina, Maria G.; Itaya, Tetsumaru; Follas, Harry A.; Gibson, Graham W. (1999). "Morphology and history of the Kermadec trench–arc–backarc basin–remnant arc system at 30 to 328S: geophysical profile, microfossil and K–Ar data" (PDF). Marine Geology. 159 (1–4): 35–62. doi:10.1016/S0025-3227(98)00206-0. Retrieved 5 June 2022.
  6. ^ a b c d e f g h i j k "Global Volcanism Program Database". Retrieved 11 June 2022.
  7. ^ a b c d e f g h i j k l m "VLIMAR Gazetteer".
  8. ^ Wysoczanski, Richard; Leonard, Graham; Gill, James; Wright, Ian; Calvert, Andrew; McIntosh, William; Jicha, Brian; Gamble, John; Timm, Christian; Handler, Monica; Drewes-Todd, Elizabeth; Zohrab, Alex (2019). "Ar-Ar age constraints on the timing of HavreTrough opening and magmatism". New Zealand Journal of Geology and Geophysics. doi:10.1080/00288306.2019.1602059.
  9. ^ a b John H. Latter, Edwards F. Lloyd, Ian E.M. Smith, and Simon Nathan. () New Zealand's volcanoes: Kermadec Islands Archived 2010-05-22 at the Wayback Machine. Volcanic Hazards Working Group, Civil Defence Scientific Advisory Committee.
  10. ^ Wunderman, R (ed.). "Report on Rumble III (New Zealand) — February 2011". Bulletin of the Global Volcanism Network. 36 (1). Smithsonian Institution. doi:10.5479/si.GVP.BGVN201102-241130. Retrieved 11 June 2022.
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