The geological history and hazards of a long-lived stratovolcano, Mt. Taranaki, New Zealand

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dc.citation.issue2-3
dc.citation.volume64
dc.contributor.authorCronin SJ
dc.contributor.authorZernack AV
dc.contributor.authorUkstins IA
dc.contributor.authorTurner MB
dc.contributor.authorTorres-Orozco R
dc.contributor.authorStewart RB
dc.contributor.authorSmith IEM
dc.contributor.authorProcter JN
dc.contributor.authorPrice R
dc.contributor.authorPlatz T
dc.contributor.authorPetterson M
dc.contributor.authorNeall VE
dc.contributor.authorMcDonald GS
dc.contributor.authorLerner GA
dc.contributor.authorDamaschcke M
dc.contributor.authorBebbington MS
dc.date.accessioned2023-11-02T19:11:31Z
dc.date.accessioned2023-11-03T05:06:06Z
dc.date.available2021-03-17
dc.date.available2023-11-02T19:11:31Z
dc.date.available2023-11-03T05:06:06Z
dc.date.issued2021-03-17
dc.description.abstractMt. Taranaki is an andesitic stratovolcano in the western North Island of New Zealand. Its magmas show slab-dehydration signatures and over the last 200 kyr they show gradually increasing incompatible element concentrations. Source basaltic melts from the upper mantle lithosphere pond at the base of the crust (∼25 km), interacting with other stalled melts rich in amphibole. Evolved hydrous magmas rise and pause in the mid crust (14–6 km), before taking separate pathways to eruption. Over 228 tephras erupted over the last 30 kyr display a 1000–1500 yr-periodic cycle with a five-fold variation in eruption frequency. Magmatic supply and/or tectonic regime could control this rate-variability. The volcano has collapsed and re-grown 16 times, producing large (2 to >7.5 km3) debris avalanches. Magma intrusion along N-S striking faults below the edifice are the most likely trigger for its failure. The largest Mt. Taranaki Plinian eruption columns reach ∼27 km high, dispersing 0.1 to 0.6 km3 falls throughout the North Island. Smaller explosive eruptions, or dome-growth and collapse episodes were more frequent. Block-and-ash flows reached up to 13 km from the vent, while the largest pumice pyroclastic density currents travelled >23 km. Mt. Taranaki last erupted in AD1790 and the present annual probability of eruption is 1–1.3%.
dc.description.confidentialfalse
dc.format.pagination456-478
dc.identifier.author-urlhttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000629876400001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=c5bb3b2499afac691c2e3c1a83ef6fef
dc.identifier.citationCronin SJ, Zernack AV, Ukstins IA, Turner MB, Torres-Orozco R, Stewart RB, Smith IEM, Procter JN, Price R, Platz T, Petterson M, Neall VE, McDonald GS, Lerner GA, Damaschcke M, Bebbington MS. (2021). The geological history and hazards of a long-lived stratovolcano, Mt. Taranaki, New Zealand. New Zealand Journal of Geology and Geophysics. 64. 2-3. (pp. 456-478).
dc.identifier.doi10.1080/00288306.2021.1895231
dc.identifier.eissn1175-8791
dc.identifier.elements-typejournal-article
dc.identifier.issn0028-8306
dc.identifier.urihttps://mro.massey.ac.nz/handle/10179/69034
dc.languageEnglish
dc.publisherTaylor and Francis Group on behalf of the Royal Society of New Zealand
dc.publisher.urihttps://www.tandfonline.com/doi/full/10.1080/00288306.2021.1895231
dc.relation.isPartOfNew Zealand Journal of Geology and Geophysics
dc.rights(c) 2021 The Author/s
dc.rightsCC BY-NC-ND 4.0
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectTaranaki
dc.subjectandesite stratovolcano
dc.subjectvolcanic hazard
dc.subjectdebris avalanche
dc.subjectblock and ash flow
dc.subjectEgmont
dc.titleThe geological history and hazards of a long-lived stratovolcano, Mt. Taranaki, New Zealand
dc.typeJournal article
pubs.elements-id443059
pubs.organisational-groupOther
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