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The Taurewa Eruptive Episode: evidence for climactic eruptions at Ruapehu volcano, New Zealand |
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| Authors: | Susan L. Donoghue Alan S. Palmer Elizabeth McClelland Kate Hobson Robert B. Stewart Vincent E. Neall Jèrôme Lecointre Richard Price |
| Affiliation: | (1) Department of Earth Sciences, University of Hong Kong, Pokfulam Road, Hong Kong e-mail: donoghue@hkucca.hku.hk, Fax: +852-25176912, HK;(2) Institute of Natural Resources, College of Science, Massey University, Private Bag 11-222 Palmerston North, New Zealand, NZ;(3) Department of Earth Sciences, University of Oxford, Parks Road, Oxford, OX1 3PR, UK, GB;(4) School of Earth Science, La Trobe University, AUS-3083 Bundoora, Australia, AU |
| Abstract: | The ca. 10,500 years B.P. eruptions at Ruapehu volcano deposited 0.2–0.3 km3 of tephra on the flanks of Ruapehu and the surrounding ring plain and generated the only known pyroclastic flows from this volcano in the late Quaternary. Evidence of the eruptions is recorded in the stratigraphy of the volcanic ring plain and cone, where pyroclastic flow deposits and several lithologically similar tephra deposits are identified. These deposits are grouped into the newly defined Taurewa Formation and two members, Okupata Member (tephra-fall deposits) and Pourahu Member (pyroclastic flow deposits). These eruptions identify a brief ( |
| Keywords: | Ruapehu volcano Taurewa Formation Tephra Pyroclastic flow Remanent magnetism Taurewa eruptive episode Volcanic hazard |
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