Relevant bibliographies by topics / Oruanui eruption

Academic literature on the topic 'Oruanui eruption'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Oruanui eruption"

1

Wilson, C. J. N., V. R. Switsur, and A. P. Ward. "A new 14C age for the Oruanui (Wairakei) eruption, New Zealand." Geological Magazine 125, no. 3 (May 1988): 297–300. http://dx.doi.org/10.1017/s0016756800010232.

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AbstractThe Oruanui eruption was the largest known outburst of Taupo volcano, New Zealand, and is among the larger Quaternary eruptions documented. The eruption deposits are variously known as the Oruanui, Wairakei, Kawakawa Tephra, or Aokautere Ash formations, and represent a bulk volume probably exceeding 500 km3. Four new 14C age determinations on carbonized vegetation in the non-welded Oruanui ignimbrite are combined to give a conventional age of 22590±230 yr b.p. Compared with the previously accepted figure of 20000 yr b.p., this new age resolves the anomaly of apparently older 14C ages being obtained from a demonstrably younger New Zealand deposit, and strengthens correlation of this eruption with an Antarctic ice-core acid anomaly. The trace of this eruption has great potential as a time-plane marker in the Antarctic just prior to the last glacial maximum. The close similarity in ages between the Oruanui and a comparable sized eruption (Ito/Aira-Tn) in Japan suggests that this period of activity may represent the best chance of resolving any linkages between large-scale explosive silicic volcanism and climate changes.
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2

Wilson, C. J. N. "The 26.5 ka Oruanui eruption, New Zealand: an introduction and overview." Journal of Volcanology and Geothermal Research 112, no. 1-4 (December 2001): 133–74. http://dx.doi.org/10.1016/s0377-0273(01)00239-6.

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3

Schill, G. P., K. Genareau, and M. A. Tolbert. "Deposition and immersion-mode nucleation of ice by three distinct samples of volcanic ash." Atmospheric Chemistry and Physics 15, no. 13 (July 10, 2015): 7523–36. http://dx.doi.org/10.5194/acp-15-7523-2015.

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Abstract. Ice nucleation of volcanic ash controls both ash aggregation and cloud glaciation, which affect atmospheric transport and global climate. Previously, it has been suggested that there is one characteristic ice nucleation efficiency for all volcanic ash, regardless of its composition, when accounting for surface area; however, this claim is derived from data from only two volcanic eruptions. In this work, we have studied the depositional and immersion freezing efficiency of three distinct samples of volcanic ash using Raman microscopy coupled to an environmental cell. Ash from the Fuego (basaltic ash, Guatemala), Soufrière Hills (andesitic ash, Montserrat), and Taupo (Oruanui eruption, rhyolitic ash, New Zealand) volcanoes were chosen to represent different geographical locations and silica content. All ash samples were quantitatively analyzed for both percent crystallinity and mineralogy using X-ray diffraction. In the present study, we find that all three samples of volcanic ash are excellent depositional ice nuclei, nucleating ice from 225 to 235 K at ice saturation ratios of 1.05 ± 0.01, comparable to the mineral dust proxy kaolinite. Since depositional ice nucleation will be more important at colder temperatures, fine volcanic ash may represent a global source of cold-cloud ice nuclei. For immersion freezing relevant to mixed-phase clouds, however, only the Oruanui ash exhibited appreciable heterogeneous ice nucleation activity. Similar to recent studies on mineral dust, we suggest that the mineralogy of volcanic ash may dictate its ice nucleation activity in the immersion mode.
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4

Allan, Aidan S. R., Daniel J. Morgan, Colin J. N. Wilson, and Marc-Alban Millet. "From mush to eruption in centuries: assembly of the super-sized Oruanui magma body." Contributions to Mineralogy and Petrology 166, no. 1 (March 17, 2013): 143–64. http://dx.doi.org/10.1007/s00410-013-0869-2.

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5

Manville, Vern, and Colin J. N. Wilson. "The 26.5 ka Oruanui eruption, New Zealand: A review of the roles of volcanism and climate in the post‐eruptive sedimentary response." New Zealand Journal of Geology and Geophysics 47, no. 3 (September 2004): 525–47. http://dx.doi.org/10.1080/00288306.2004.9515074.

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6

Van Eaton, Alexa R., and Colin J. N. Wilson. "The nature, origins and distribution of ash aggregates in a large-scale wet eruption deposit: Oruanui, New Zealand." Journal of Volcanology and Geothermal Research 250 (January 2013): 129–54. http://dx.doi.org/10.1016/j.jvolgeores.2012.10.016.

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7

WILSON, C. J. N., S. BLAKE, B. L. A. CHARLIER, and A. N. SUTTON. "The 26·5 ka Oruanui Eruption, Taupo Volcano, New Zealand: Development, Characteristics and Evacuation of a Large Rhyolitic Magma Body." Journal of Petrology 47, no. 1 (August 31, 2005): 35–69. http://dx.doi.org/10.1093/petrology/egi066.

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8

Charlier, B. L. A., C. J. N. Wilson, and J. P. Davidson. "Rapid open-system assembly of a large silicic magma body: time-resolved evidence from cored plagioclase crystals in the Oruanui eruption deposits, New Zealand." Contributions to Mineralogy and Petrology 156, no. 6 (June 13, 2008): 799–813. http://dx.doi.org/10.1007/s00410-008-0316-y.

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9

Lowe, David J., C. J. N. Wilson, R. M. Newnham, and A. G. Hogg. "Dating the Kawakawa/Oruanui eruption: Comment on “Optical luminescence dating of a loess section containing a critical tephra marker horizon, SW North Island of New Zealand” by R. Grapes et al." Quaternary Geochronology 5, no. 4 (August 2010): 493–96. http://dx.doi.org/10.1016/j.quageo.2009.10.006.

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10

Schill, G. P., K. Genareau, and M. A. Tolbert. "Deposition and immersion mode nucleation of ice by three distinct samples of volcanic ash using Raman spectroscopy." Atmospheric Chemistry and Physics Discussions 15, no. 2 (January 16, 2015): 1385–420. http://dx.doi.org/10.5194/acpd-15-1385-2015.

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Abstract:
Abstract. Ice nucleation on volcanic ash controls both ash aggregation and cloud glaciation, which affect atmospheric transport and global climate. Previously, it has been suggested that there is one characteristic ice nucleation efficiency for all volcanic ash, regardless of its composition, when accounting for surface area; however, this claim is derived from data from only two volcanic eruptions. In this work, we have studied the depositional and immersion freezing efficiency of three distinct samples of volcanic ash using Raman Microscopy coupled to an environmental cell. Ash from the Fuego (basaltic ash, Guatemala), Soufrière Hills (andesitic ash, Montserrat), and Taupo (Oruanui euption, rhyolitic ash, New Zealand) volcanoes were chosen to represent different geographical locations and silica content. All ash samples were quantitatively analyzed for both percent crystallinity and mineralogy using X-ray diffraction. In the present study, we find that all three samples of volcanic ash are excellent depositional ice nuclei, nucleating ice from 225–235 K at ice saturation ratios of 1.05 ± 0.01, comparable to the mineral dust proxy kaolinite. Since depositional ice nucleation will be more important at colder temperatures, fine volcanic ash may represent a global source of cold-cloud ice nuclei. For immersion freezing relevant to mixed-phase clouds, however, only the Oruanui ash exhibited heterogeneous ice nucleation activity. Similar to recent studies on mineral dust, we suggest that the mineralogy of volcanic ash may dictate its ice nucleation activity in the immersion mode.
APA, Harvard, Vancouver, ISO, and other styles
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