Otago University Research Archive
Browsing Geology by Date Published
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Browsing Geology by Date Published
Now showing items 1-20 of 93
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(Thesis, Doctor of Philosophy, 2013)The Alpine Fault is a ~900 km-long, active Australian-Pacific plate boundary structure, which accommodates up to 70–90% of total plate boundary motion across the South Island of New Zealand. Despite abundant evidence that ... -
(Thesis, Doctor of Philosophy, 2013)The Alpine Fault mylonite zone (AFMZ) is the downward continuation of the present-day Australian-Pacific plate boundary through the South Island of New Zealand. It exhibits an exponential shear strain distribution across ...
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(Thesis, Doctor of Philosophy, 2013)Baleen whales (mysticetes) form an essential part of modern ocean ecosystems, and show some of the most extreme adaptations evolved by any mammal. The evolutionary history of these animals has attracted much attention in ...
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(Thesis, Master of Science, 2013)Understanding the detailed nature of water masses and their boundaries is problematic due to the methods available for observing the physical properties of the ocean. This is of particular concern in regions of the world’s ... -
(Thesis, Doctor of Philosophy, 2013)Foulden Maar is a latest Oligocene–earliest Miocene maar–diatreme volcano located in a vent cluster of the monogenetic Waipiata Volcanic Field in Otago, New Zealand. The present–day erosion level exposes a 1000 x 650 m ...
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(Journal Article, Geochemistry, Geophysics, Geosystems, 2012)PuffinPlot is a user-friendly desktop application for analysis of paleomagnetic data, offering a unique combination of features. It runs on several operating systems, including Windows,Mac OS X, and Linux; supports both ... -
(Thesis, Master of Science, 2012)The provenance of sediments in the Western Southland Basins has been investigated using Ti-in-quartz geothermometry in conjunction with cathodoluminescence imaging, petrography and zircon geochronology. Data from the ...
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(Thesis, Master of Science, 2012)Cataclasis, associated with slip on a fault, results in the formation of fine grained fault rocks which have undergone fragmentation and shape change. This is accompanied by propagation of micro-fractures through the fault ...
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(Thesis, Master of Science, 2012)The Foulden Maar is part of the latest Oligocene - early Miocene Waipiata Volcanic Field and is located about 10 km to the southeast of Middlemarch, Central Otago, New Zealand. Its sediment-filled crater is approximately 1 ... -
(Thesis, Doctor of Philosophy, 2012)The Pliocene period is an attractive geological analogue from which to study the future behaviour of the cryosphere because global temperatures and atmospheric CO2 were inline with what is projected in the coming decades. ... -
(Thesis, Master of Science, 2012)Provenance of ancient and Cenozoic East Otago and Canterbury Basin sedimentary rocks, modern Haast River and Wairau River bedload river sediment have been investigated using titanium-in-quartz geothermometry grain size ...
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Palaeomagnetism of Palaeogene strata from southern Zealandia: Implications for ice in the greenhouse (Thesis, Doctor of Philosophy, 2012)When did the first ice form on Antarctica? Large, stable ice sheets started to appear in the Oligocene, but there may have been earlier, transient Palaeocene glaciations which left only brief traces in the sedimentary ... -
(Thesis, Doctor of Philosophy, 2011)The development and evolution of supergene gold and sulphide mineralisation that occurs in quartz pebble conglomerates (QPCs) from two contrasting environments is investigated. The contrasting sites in this study represent ...
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(Thesis, Doctor of Philosophy, 2011)A high standing oceanic island in the mid-latitudes of the South Pacific, New Zealand is well situated to record far-field effects of global climate change. A 1.8 Ma paleomagnetic and environmental magnetic record from the ...
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(Thesis, Master of Science, 2011)The Great South Basin is one of New Zealand's largest undeveloped offshore basins and is known to have significant oil and gas prospects. The Great South Basin lies offshore from the coast of Southland and South Otago, and ... -
(Thesis, Master of Science, 2011)Situated ~20 km northeast of Haast in a remote part of South Westland, New Zealand, the ~65 km2 Bald Hill-Maori Saddle region had not been mapped in detail prior to this research. This study provides a detailed account of ... -
(Thesis, Doctor of Philosophy, 2011)Solidified remnants of major magma pathways, and localized clusters of smaller intrusive sheets, are exposed in the mountains of South Victoria Land, Antarctica. Together the intrusions represent the shallowest 2 km of the ...
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(Thesis, Master of Science, 2011)The Oligocene was a time of major tectonic development in the Southern Ocean. The final break-up of Gondwana was underway leading to the opening of the Drake Passage and Tasman Gateway allowing the development of the ... -
(Thesis, Master of Science, 2011)The Alpine Fault, the main onshore structure in the Pacfic-Australian plate boundary, runs along the West Coast of the South Island of New Zealand, where it accommodates ~70% of the relative plate motion. The fault ...
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(Thesis, Master of Science, 2011)The Greenhills Complex is a composite ultramafic to mafic layered igneous intrusion located on the Bluff Peninsula, 30 km south of Invercargill. Two principal lobes range from dunite at their base through olivine clinopyroxenite ...
Now showing items 1-20 of 93