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Browsing School of Geography, Environment and Earth Sciences · Te Kura Tatāi Aro Whenua by Subject

Browsing School of Geography, Environment and Earth Sciences · Te Kura Tatāi Aro Whenua by Subject "260103 Vulcanology"

Now showing items 1-17 of 17

Assembling Dacite in a Continental Subduction Zone: A Case Study of Tauhara Volcano

Tutt, Chelsea May (Victoria University of Wellington, 2011)

Mount Tauhara is the largest dacitic volcanic complex of onshore New Zealand and comprises seven subaerial domes and associated lava and pyroclastic flows, with a total exposed volume of ca. 1 km3. The dacites have a ...
Crystal Forensics of Historical Lava Flows from Mt Ngauruhoe

Barton, Sophie Jan (Victoria University of Wellington, 2011)

Mt Ngauruhoe is a 900 m high andesitic cone constructed over the last 2500 yr, and is the youngest cone of the Tongariro Massif. It was previously one of the most continuously active volcanoes in New Zealand, with ash ...
Dynamics of Large, Wet Volcanic Clouds : The 25.4 ka Oruanui Eruption of Taupo Volcano, New Zealand

Van Eaton, Alexa R (Victoria University of Wellington, 2012)

This work investigates the dynamics of large-scale, ‘wet’ volcanic eruption clouds generated by the interaction of silicic magma with external water. The primary case study draws from a detailed record of non-welded ...
The Interrelationships between Faulting and Volcanism in the Okataina Volcanic Centre, New Zealand

Seebeck, Hannu (Victoria University of Wellington, 2008)

Continental rifts show close spatial relations between faulting and volcanism, however the interrelations between each process and their roles in the accommodation of regional extension are not well understood. The geometric ...
Lithospheric Xenoliths from the Marie Byrd Land Volcanic Province, West Antarctica

Wysoczanski, Richard J (Victoria University of Wellington, 1993)

Studies of the Earths lithosphere, and particularly the lower crust, have in the past relied on geophysical methods, and on geochemical studies of granulite terrains exposed at the surface. Geophysical studies can not ...
Micro-Analytical Studies of the Petrogenesis of Silicic Arc Magmas in the Taupo Volcanic Zone and Southern Kermadec Arc, New Zealand

Saunders, Katharine Emma (Victoria University of Wellington, 2009)

The petrogenesis of silicic arc magmas is controversial with end-member models of fractional crystallisation and crustal anatexis having been invoked. A prime example of this is the archetypical continental Taupo Volcanic ...
The Petrology and Petrochemistry of Andesite and Dacite Volcanoes in Eastern Bay of Plenty, New Zealand

Duncan, Andrew Rae (Victoria University of Wellington, 1970)

The volcanic rocks of Edgecumbe, Whale Island, White Island and Manawahe are andesites and dacites, which are collectively termed the Bay of Plenty volcanics. Edgecumbe is a comparatively young volcano, being active between ...
Physical Processes in Subaerial and Submarine Explosive Volcanism: Case Studies from the Kermadec Arc, SW Pacific

Rotella, Melissa Dawn (Victoria University of Wellington, 2013)

This research explores the dynamics of subaerial and submarine explosive silicic volcanism in the Kermadec arc (SW Pacific) by looking at the microtextures of bubbles in pumice. An increasing body of evidence from oceanic ...
Seismic and Related Phenomena at Active Volcanoes in New Zealand, Hawaii, and Italy

Dibble, Raymond Russell (Victoria University of Wellington, 1972)

Recordings of the seismic power (rate of radiation of seismic energy) and seismic power spectral density (frequency distribution of seismic power) of volcanic vibrations at volcanoes Ruapehu and White Island in New Zealand, ...
Some Aspects of Quaternary History of Tongariro Volcanic Centre

Topping, Wayne William (Victoria University of Wellington, 1974)

The Tongariro Volcanic Centre, at the southern end of the Taupo Volcanic Zone, North Island, New Zealand, consists of five large andesite volcanoes - Ruapehu, Tongariro, Ngauruhoe, Pihanga and Kaharamea-Tihia - with several ...
Some Aspects of Western Taranaki Geology and Pedology

Neall, Vincent Ernest (Victoria University of Wellington, 1973)

The North Island of New Zealand is the southern end of an island arc structure which stretches 3000 km northwards to Samoa. It comprises the Hikurangi Trench to the east of the North Island (Houtz, et.al. 1967), a central ...
Some Studies of the Geology, Volcanic History, and Geothermal Resources of the Okataina Volcanic Centre, Taupo Volcanic Zone, New Zealand

Nairn, Ian Alistair (Victoria University of Wellington, 1981)

Okataina Volcanic Centre is the most recently active of the four major rhyolite eruptive centres in the Taupo Volcanic Zone of New Zealand. Within the Centre lies Haroharo Caldera, a complex of overlapping collapse structures ...
A Study of Some Aspects of the Volcanic History of the Lake Taupo Area, North Island, New Zealand

Froggatt, Paul C (Victoria University of Wellington, 1982)

Rhyolitic pyroclastic eruptives from the Taupo area, New Zealand have been mapped as nine tephra formations of Holocene (0-10 kyr B.P.), and six of late Pleistocene age (20-c.50 kyr B.P.). Only the 10 younger tephras are ...
Tarawera Volcanic Complex

Cole, James William (Victoria University of Wellington, 1966)

The Tarawera Volcanic Complex is situated on the south eastern side of the Okataina Volcanic Centre, and is an association of rhyolite domes, flows and tephra, and basalt scoria. Twelve rhyolite domes are described, and ...
Temporal Changes in Seismic Anisotropy as a New Eruption Forecasting Tool

Gerst, Alexander (Victoria University of Wellington, 2003)

The orientation of crustal anisotropy changed by ~80 degrees in association with the 1995/96 eruption of Mt. Ruapehu volcano, New Zealand. This change occurred with a confidence level of more than 99.9%, and affects an ...
Temporal distribution and frequency of explosive volcanism in the Kermadec Arc, SW Pacific: Insights from marine cores

Herbert, Kirsty Rose (Victoria University of Wellington, 2013)

Studies along the Kermadec arc, SW Pacific, over the past two decades have shown the presence of numerous volcanoes with histories of caldera collapse, and abundant evidence of explosive eruptions involving evolved magmas ...
The Volcano‐Tectonic Evolution of the Macquarie Ridge Complex, Australia‐Pacific Plate Boundary South of New Zealand

Conway, Christopher Edward (Victoria University of Wellington, 2011)

The Macquarie Ridge Complex (MRC) forms the submarine expression of the Australia‐Pacific plate boundary south of New Zealand, comprising a rugged bathymetry made up of numerous seamounts along its length. Tectonic ...