Journal Articles

Permanent URI for this collectionhttps://mro.massey.ac.nz/handle/10179/7915

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    The geological history and hazards of a long-lived stratovolcano, Mt. Taranaki, New Zealand
    (Taylor and Francis Group on behalf of the Royal Society of New Zealand, 2021-03-17) Cronin 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
    Mt. 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%.
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    Small stories, small acts in sites of struggle: the establishmentof Māori wards in Taranaki
    (The Royal Society of New Zealand, 7/03/2023) Piwari A; Bennett A; Morris C; Wynyard M; Shaw R
    Between 2001 and 2021, the eight iwi of Taranaki entered into Deeds of Settlement with the Crown. These settlements, which saw the Crown acknowledge and apologise for its historical breaches of Te Tiriti o Waitangi, also served to extinguish the rights of Taranaki Māori to seek further redress from the Crown. The Treaty Settlement process over, Taranaki Māori and the many non-Māori that have settled in the rohe (tribal territory) are left to themselves to deal with any lingering tensions, ongoing enmity and forms of structural injustice stemming from the settler-colonial process. This paper is not about the formal processes of colonisation or Crown-initiated attempts to atone for the past through the Treaty Settlement process. Rather, this paper concerns the painstaking work of change undertaken on the ground by local people, Māori and non-Māori alike. It concerns the ‘small stories’ of colonisation, the myriad endeavours of local people working for change in local contexts. In particular, the article concerns the fight for Māori wards on Councils in New Plymouth and South Taranaki, and the extraordinary work done by ordinary people in attempting to forge some kind of future of togetherness in a region riven by the violence of colonisation.