Geology

Granular Dynamics in Shallow Earthquake Slip Zones: Insights from Microstructural Analysis of Clast-Cortex Aggregate Grains

Crookbain, Kieran (Thesis, Master of Science, 2017)

Understanding the dynamics of shallow earthquake rupture and coseismic slip in carbonate-dominated fault zones is exceptionally important in many areas worldwide. Although constraints are available from rock mechanics ...

Validation of ground motion simulations using precarious rocks

Bowie, Elliot (Thesis, Master of Science, 2017)

Southern California Earthquake Center (SCEC) have developed the Broadband Platform (BBP) that computes 0-100 Hz seismograms for historical and scenario earthquakes using several ground motion simulation methods. Simulating ...

The Waitaki Canyon - An investigation of the Late Quaternary development of a shelf-indenting submarine canyon using high-resolution boomer seismic data

Abbey, Cameron James (Thesis, Master of Science, 2017)

Submarine canyons are well documented, both around New Zealand and globally, but questions remain around the processes involved in their formation and evolution as well as around how their morphology reflects their ...

Seismic characterisation of hydrate and shallow gas systems associated with active margin sediments and structures in the Pegasus Basin, Hikurangi Margin, New Zealand

Fraser, Douglas (Thesis, Doctor of Philosophy, 2017)

The Pegasus Basin off the east coast of New Zealand's North Island is a frontier basin that hosts a large gas hydrate province. The basin has a large amount of faulting, which has lead to the creation of many interesting ...

The damage zone of New Zealand's Alpine Fault

Williams, Jack Nicholas (Thesis, Doctor of Philosophy, 2017)

The dynamic propagation of an earthquake rupture will generate inelastic deformation within its surrounding medium, culminating in the development of a fault damage zone. These are heavily fractured volumes of rock that ...

Evolution and dynamics of a monogenetic volcanic complex in the southern Hopi Buttes Volcanic Field (AZ, US): magma diversion and fragmentation processes at the Jagged Rocks Complex

Re, Giuseppe (Thesis, Doctor of Philosophy, 2017)

Many populated areas in the world (e.g., Flagstaff, AZ; Auckland, NZ; Mexico City, MEX) lie within active monogenetic volcanic fields that typically contain small volcanic cones and explosive maar craters formed over the ...

Carbonate alteration associated with lamprophyres and orogenic gold, Southern Alps, New Zealand

Wellnitz, Anne Katrin (Thesis, Doctor of Philosophy, 2017)

In this thesis the chemistry and textures of void-filling hydrothermal carbonate and associated altered metamorphic and lamprophyric rock in western Otago, New Zealand, were studied. With this information a detailed model ...

Characterisation of gold mineralisation and geophysical aided geological mapping in the Old Man Range, Central Otago, New Zealand

Stephens, Samuel (Dissertation, BAppSc. (Hons.), 2014)

Six structurally controlled gold deposits are hosted within two different structural blocks in the Old Man Range area. The mineralised lodes are hosted in normal faults which cut steeply across the host schistosity. In the ...

Communicating the sciences of Disaster Risk Reduction: media stories surrounding the Canterbury earthquakes of 2010-2011

Bryner, Vivienne Frances (Thesis, Doctor of Philosophy, 2017)

Communication of disaster risk reduction (DRR) should be participatory, democratised and scientifically robust according to ideals enshrined in the United Nations’ International Strategy for Disaster Reduction Hyogo Framework ...

Sedimentology, paleoecology and paleogeography of the shallow marine Chatton Formation, southern New Zealand

Gard, Henry James Leonard (Thesis, Master of Science, 2017)

Chatton Formation, is a late Oligocene (Duntroonian (27.3–25.2 Ma) to Waitakian (25.2–21.7 Ma)) unit comprising fossiliferous shallow marine sandstones, sandy siltstones, greensands, grainstones and conglomerates. The ...

The creep behaviour, and elastic and anelastic properties of polycrystalline ice

Vaughan, Matthew James Hatfield (Thesis, Doctor of Philosophy, 2017)

Ice is ubiquitous on Earth and on the outer planets and satellites of the solar system. Ice is an important geologic material, and is a critical contributor to global climate and sea-level models. Understanding and modelling ...

A Late Pleistocene Record of Paleoproductivity and Ocean Circulation Variation From the Gulf of Alaska: Results From IODP Expedition 341 (Southern Alaska Margin)

Anderson, Harris John (Thesis, Master of Science, 2017)

Deep ocean sediment cores collected by IODP Expedition 341 in the Gulf of Alaska record variations in paleoproductivity that provide insight into biogeochemical cycling and ocean circulation on glacial-interglacial timescales. ...

Igneous Petrogenesis of Plutonic Rock at Oraka Point, Southland

Galloway, James Robert (Thesis, Master of Science, 2017)

Oraka Point is located along the Southland coast of New Zealand at an inferred intersection between the Median Batholith and Brook Street Terrane. Plutonic rock found at Oraka Point represents the western edge of the Eastern ...

The Environmental Legacy of Historic Gold Processing in the Reefton Goldfield

Malloch, Kirstine (Thesis, Master of Science, 2017)

Orogenic gold deposits are a source of arsenic (As) and antimony (Sb), in the sulphides arsenopyrite and stibnite respectively. Weathering of these deposits releases As and Sb into the environment but it is ore processing ...

Vulnerability of the Ross Ice Shelf: Seismic Site Characterisation and Drilling Recommendation

van Haastrecht, Laurine Nathalie (Thesis, Master of Science, 2017)

The Ross Ice Shelf (RIS) is the largest ice shelf in the world. It buttresses ice flow from both the East Antarctic Ice Sheet (EAIS) and the West Antarctic Ice Sheet (WAIS). Today the RIS does not appear to be retreating ...

The Origin of Lava-Hyaloclastite Sheets, South Iceland

Gorny, Carolyn Fine (Thesis, Doctor of Philosophy, 2017)

Large scale subglacial eruptions are enigmatic. Their eruption and emplacement dynamics are not well understood due to the incompleteness of preserved units. The Snæbýlisheiði unit, south Iceland, forms a ca. 27 cubic ...

Characterising change in post-glacial climate using seismic imaging of Lake Ohau sediments

Krause, Michael Anthony (Thesis, Master of Science, 2017)

In a New Zealand first, a multi-channel hydrophone streamer has been used in conjunction with a boomer source to seismically image post-glacial sediments in the floor of Lake Ohau, Mackenzie Basin, adjacent to the Southern ...

Temporal and spatial composition of water dissolved load in a temperate-glaciated catchment, the Waitaki Catchment, South Island, New Zealand.

Pettinger, Vincent (Thesis, Master of Science, 2016)

The dissolved load of waters were analysed seasonally across a year (Summer - 2013 to Spring - 2014) using major and trace ions and Sr isotope ratios (87Sr/86Sr) to determine mineral provenance in the Waitaki Catchment, ...

An investigation into the primary and secondary causes of and controls on acid mine drainage at Echo Mine near Reefton, New Zealand

Partridge, Taliesen (Thesis, Master of Science, 2016)

Acid mine drainage (AMD) is one of the most important environmental issue arising from mining practices worldwide. It is caused by the disturbance, and then chemical weathering of pyrite rich rocks during mining operations. ...

Volcanology of the Lake Wanaka diatreme in the Alpine Dike Swarm, New Zealand

Maloney, Samuel Peter (Thesis, Master of Science, 2016)

The Lake Wanaka diatreme represents an eroded Oligocene maar-diatreme volcano situated within the Alpine Dike Swarm, northwest Otago, New Zealand. Current levels of exposure display lithofacies that are characteristic of ...

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