Ruapehu and Tongariro stratovolcanoes: a review of current understanding

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dc.citation.issue2-3
dc.citation.volume64
dc.contributor.authorLeonard GS
dc.contributor.authorCole RP
dc.contributor.authorChristenson BW
dc.contributor.authorConway CE
dc.contributor.authorCronin SJ
dc.contributor.authorGamble JA
dc.contributor.authorHurst T
dc.contributor.authorKennedy BM
dc.contributor.authorMiller CA
dc.contributor.authorProcter JN
dc.contributor.authorPure LR
dc.contributor.authorTownsend DB
dc.contributor.authorWhite JDL
dc.contributor.authorWilson CJN
dc.date.accessioned2024-11-04T19:42:44Z
dc.date.available2024-11-04T19:42:44Z
dc.date.issued2021-05-02
dc.description.abstractRuapehu (150 km3 cone, 150 km3 ring-plain) and Tongariro (90 km3 cone, 60 km3 ring-plain) are iconic stratovolcanoes, formed since ∼230 and ∼350 ka, respectively, in the southern Taupo Volcanic Zone and Taupo Rift. These volcanoes rest on Mesozoic metasedimentary basement with local intervening Miocene sediments. Both volcanoes have complex growth histories, closely linked to the presence or absence of glacial ice that controlled the distribution and preservation of lavas. Ruapehu cone-building vents are focused into a short NNE-separated pair, whereas Tongariro vents are more widely distributed along that trend, the differences reflecting local rifting rates and faulting intensities. Both volcanoes have erupted basaltic andesite to dacite (53–66 wt.% silica), but mostly plagioclase-two pyroxene andesites from storage zones at 5–10 km depth. Erupted compositions contain evidence for magma mixing and interaction with basement rocks. Each volcano has an independent magmatic system and a growth history related to long-term (>104 years) cycles of mantle-derived magma supply, unrelated to glacial/interglacial cycles. Historic eruptions at both volcanoes are compositionally diverse, reflecting small, dispersed magma sources. Both volcanoes often show signs of volcanic unrest and have erupted with a wide range of styles and associated hazards, most recently in 2007 (Ruapehu) and 2012 (Tongariro).
dc.description.confidentialfalse
dc.edition.editionJul 2021
dc.format.pagination389-420
dc.identifier.author-urlhttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000646130100001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=c5bb3b2499afac691c2e3c1a83ef6fef
dc.identifier.citationLeonard GS, Cole RP, Christenson BW, Conway CE, Cronin SJ, Gamble JA, Hurst T, Kennedy BM, Miller CA, Procter JN, Pure LR, Townsend DB, White JDL, Wilson CJN. (2021). Ruapehu and Tongariro stratovolcanoes: a review of current understanding. New Zealand Journal of Geology and Geophysics. 64. 2-3. (pp. 389-420).
dc.identifier.doi10.1080/00288306.2021.1909080
dc.identifier.eissn1175-8791
dc.identifier.elements-typejournal-article
dc.identifier.issn0028-8306
dc.identifier.urihttps://mro.massey.ac.nz/handle/10179/71905
dc.languageEnglish
dc.publisherTaylor and Francis Group on behalf of GNS Science Ltd
dc.publisher.urihttps://www.tandfonline.com/doi/full/10.1080/00288306.2021.1909080
dc.relation.isPartOfNew Zealand Journal of Geology and Geophysics
dc.rights© 2021 Crown Copyright in the Commonwealth of New Zealand. GNS Science Ltd
dc.rightsCC BY-NC-ND 4.0
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectStratovolcano
dc.subjectRuapehu
dc.subjectTongariro
dc.subjectNgauruhoe
dc.subjecteruption
dc.subjectandesite
dc.subjectmagma system
dc.subjectlahar
dc.subjectsector collapse
dc.subjectstructure
dc.subjectfaulting
dc.titleRuapehu and Tongariro stratovolcanoes: a review of current understanding
dc.typeJournal article
pubs.elements-id445392
pubs.organisational-groupCollege of Health
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