1 10 13 https://theses.otagogeology.org.nz/files/original/c8f9c6be139a695e3061f36e7afdd5ba.pdf 96bb303b8c5473532c5d48b4b1c8c0da Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Geology theses OU Geology thesis Thesis or dissertation completed by University of Otago Geology students Location WKT (WGS84) The location stored in WKT (WGS84) format POLYGON ((170.110514178899393 -43.538336015243218,170.054205383777713 -43.54475916871651,170.047711891135208 -43.506714308529858,170.051984146299048 -43.459299167880303,170.107743989229022 -43.442142810280188,170.118906393511395 -43.454931622547235,170.110514178899393 -43.538336015243218)) Author last name Last name of the Author Upton Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? PhD Advisers Who supervised/advised this student Koons, P. Abstract The Abstract for this thesis The mineral chemistry and oxygen isotope signature of a crustal cross-section perpendicular to the Alpine Fault and from the highest uplift region of the western Southern Alps has been examined for the purpose of characterising mechanisms of deformation and material movement in the inboard region of the Australian plate/Pacific plate continental collision. The crosssection consists of Alpine Fault mylonites, curly schist, oligoclase and albite zone Alpine scl1ist. The mineral assemblage of quartzofeldspathic schist and mylonite is quartz + plagioclase + biotite + muscovite + garnet + ilmenite + apatite ± chlorite ± epidote ± graphite ± hornblende ± rutile ± zircon. Excepting albite and oligoclase, all minerals are found throughout the structural section. The mylonites exhibit a larger variation in mineral chemistry than the ·adjacent oligoclase zone schists but there are no sharp changes in mineral compositions. The mylonite mineral chemistry is attributed to incomplete reaction taking place during mylonitisation. All garnets in the Alpine schist are zoned, with Fe and Mg contents increasing toward the rim while Mn and Ca contents decrease. In addition to this zoning pattern which is found in most mylonite garnets, some mylonitic garnets exhibit an outer rim of Ca enrichment. Plagioclase varies from An1s ~o An4o over the oligoclase zone, and by up to 18 mole% An within individual rocks. Plagioclase in both schist and mylonite is complexly zoned, with some grains becoming more albitic toward the rim while other grains in the same rock are more anorthitic on the rim. Mylonite samples are divided into two groups on the basis of stable isotope analyses of whole rock and biotites separates. The whole rock o1Bo values differ by c. 2%o. The diffe~ence in whole rock olBo is attributed to varying lithologies, the two rock packets being brought together along the Alpine Fault. Biotites in both the mylonite rock packets are depleted by c. 1 %o in 18o relative to Alpine schist biotites. Analyses of quartz veins formed beneath the brittle-ductile transition showed variations of up to 2.5 %o in individual veins over distances of c. 2 mm. The quartz has precipitated from water calculated to have had oxygen isotope values ranging from 12 - 6 %o over a temperature range of 600° - 400°C as the rock was transported toward the surface as part of the high uplift region of the orogen. The depletion in the biotites and the isotopic values of the vein-forming fluids are compatible with, although not unique to, the incursion of meteoric water through the brittle-ductile transition and its interaction with ductilely deforming rocks beneath the Southern Alps. Numerical experiments of coupled deformation and fluid flow in a non-associated elastic-plastic material undergoing compression illustrate the effects that the plastic properties of the material and the presence of a pore pressure have upon deformation. Boundary conditions are imposed on the models such that the material representing the overriding plate is pushed into or dragged beneath the material representing a stationary plate. Deformation in a dry material is transient with shear zones moving through the material toward the stationary boundary condition. Plastic deformation in the dry non-dilatant material does not localise into a stable shear pattern. In contrast, in a wet material the deformation localises into a paired synthetic V and antithetic shear of varying intensities, with some deformation occurring between the two shears. Friction- or cohesion-softening capabilities localise deformation further. Fluid flow in a non-dilatant material results from elastic volume changes and is associated with shearing. Experiments of fluid flow in a strain-dependent, dilatant Mohr-Coulomb material showed that the ability of a deforming material to dilate provides a driving force for fluid flow and allows fluid to penetrate into regions of low static permeability. Dilatancy result in spatial and temporal variations in the dynamic permeability which increase fluid flow. The straindependent dilatant flow law creates regions of strain-hardening where dilation allows fluid penetration, and regions of strain-softening from which fluid is expelled. Flow rates are further enhanced by spatial and temporal gradients between lithostatic pore pressures and hydrostatic pore pressure. The flow rates calculated for a region with a hydrostatic pore pressure gradient were of the order of 3 x 10-7 m a-1, those for a lithostatic pore pressure gradient were of the order of 3 x 10-6 m a-1, and those for a pore pressure regime with steps from lithostatic to hydrostatic are on the qrder of 1 x 10-3 m a-1. These correspond to communication-scales of 3 cm, 3 m and 1 km respectively over 1 Ma and are minimum estimates. In the Southern Alps, the advection of rock and fluid leads to a non-equilibrium steady-state isotopic signature for the rock mass. Flow rates of at least 1 m a-1 are required to see a distinct change in the oxygen isotopic signature of the bulk whole rock. Dilatant deformation can provide some but not all of this flow. Reaction rates and flow rates are much more important than diffusion rates in determining this signature. The system is flow-dominated for flow rates >0.001 m a-1. The non-equilibrium distance increases from <1 m for v=0.001 m a-1 to c. 10 m for v=1 m a-1. The model of fluid flow resulting from continental collision is extended to include flow driven by extensive deformation, particularly dilatant, which kneads fluid through the rock mass. Within an orogenic belt, fluid-present metamorphism is a consequence of deformation-driven fluid flow. Without deformation, fluid within rocks of low static permeability}s effectively immobile. Compositionally the minerals of the Alpine schist represent an approach to an equilibrium assemblage developed during metamorphism associated with the Mesozoic Rangitatan orogeny. In contrast, the mylonites and curly schists of the Alpine Fault Zone have a dis-equilibrium signature resulting from their response to the temperature, pressure, fluid and strain rate conditions produced by the current tectonic regime. The dis-equilibrium assemblage represents an arrested movement toward re-equilibrium. Re-equilibration is associated with high strain rates and only occurs in the mylonites and curly schists. Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. Southern Alps New Zealand Thesis description Number of pages, maps, CDs, etc. 1 v. (various pagings) : ill. (some col.), maps (some col.) ; 30 cm. Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Identifier An unambiguous reference to the resource within a given context 1995Upton Creator An entity primarily responsible for making the resource Upton, Phaedra, 1967. Date A point or period of time associated with an event in the lifecycle of the resource 1995 Title A name given to the resource Mechanics, reaction and fluid flow associated with continental collision along the Alpine Fault, Southern Alps, New Zealand Subject The topic of the resource Tectonics fluid flow Mineralogy numerical modelling oxygen isotopes Southern Alps https://theses.otagogeology.org.nz/files/original/53e0fa85ee2d8545f18f3cb3b100f9db.pdf 18a51aae72591f5147cb5caf09ab8b8e Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Geology theses OU Geology thesis Thesis or dissertation completed by University of Otago Geology students Location WKT (WGS84) The location stored in WKT (WGS84) format POLYGON ((176.402144019061865 -38.249063279204904,176.478186295540922 -38.24325628911042,176.472904207635338 -38.283039126315451,176.400469996665919 -38.286057242936721,176.402144019061865 -38.249063279204904)) Author last name Last name of the Author Townend Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? BSc(Hons) Advisers Who supervised/advised this student Landis, C.A. Reay, A. Koons, P. Abstract The Abstract for this thesis Results from field observations and granulometric and componentry data for samples collected in the vicinity of Lake Rotomahana suggest that the 10 June 1886 eruption of Rotomahana was dominantly phreatomagmatic with multiple vents supplying basalt. The eruption has to date been generally interpreted as a dominantly phreatic event, during which very little or no basalt was ejected from Rotomahana. Density measurements made on -2.0~ (4 mm) basalt clasts from 13 proximal samples yield maximum densities consistently less than 2.9 g cm-3 (dense rock equivalent) and typical vesicularity ranges of greater than 50%. Of the 363 clasts measured, 6% possessed rhyolitic cores, although qualitative observations suggest that cores are more common for basalt clasts of larger grainsize. These figures are interpreted to represent the termination of magma degassing by a fluid-coolant type interaction with surrounding groundwater, and the incorporation of chunks of wall rock into the magma. The premise that a significant volume of water was present during the eruption is supported by the occurrence of accretionary lapilli in outcrops in the Waimangu Forest and cauliflower surface textures on abundant basaltic bombs and lapilli. Detailed componentry of 45 proximal samples from the area reveals that the Rotomahana eruption involved spatially and temporally variable proportions of juvenile and country rock material. It is estimated that the average minimum volumetric proportion of basalt in the Rotomahana ejecta is 15%. Basalt is present throughout the deposit in various forms including disseminated lapilli and beds of coarse scoria. The proportion of basalt at any particular location varies significantly from bed to bed, suggesting that material was derived in a complex manner from several vents, including Tarawera. XRD analysis of rhyolite, pumice and tuff clasts in ~he deposit has not yet revealed conclusive evidence for appreciable hydrothermal alteration of the country rock prior to the eruption. Further work may enable the pre-eruption state of the geothermal system to be better determined and thus permit calculations of the components of heat driving the eruption These results support the conclusion that basalt was involved in the eruption throughout the Rotomahana portion of the 1886 rift in a nonuniform fashion and limited to discrete subcraters. It therefore appears that the fragmentation process involved spatially and temporally varying proportions of magma, country rock fragments and geothermal fluid. Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. Rotomahana Thesis description Number of pages, maps, CDs, etc. v, 87 leaves : ill. (some col.), maps ; 30 cm. Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Identifier An unambiguous reference to the resource within a given context 1995Townend Creator An entity primarily responsible for making the resource Townend, John, 1972- Date A point or period of time associated with an event in the lifecycle of the resource 1995 Title A name given to the resource Rotomahana 1886 eruption : heterogeneous interaction between basaltic magma and the pre-existing geothermal system Subject The topic of the resource Volcanology base surge bombs maar crater Phreatic Phreatomagnetic Tarawera eruption https://theses.otagogeology.org.nz/files/original/387c306aa46ca05df57c92657b4cfe99.pdf 288194018d327a365aed4d42fc5a87ac Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Geology theses OU Geology thesis Thesis or dissertation completed by University of Otago Geology students Location WKT (WGS84) The location stored in WKT (WGS84) format MULTIPOLYGON (((167.887385509000097 -44.551255838999971,167.860674087000149 -44.565660919999956,167.843637506000078 -44.550027854999939,167.842570035000108 -44.549046624999953,167.830245698000112 -44.537518282999919,167.827444756000091 -44.534898812999977,167.826049271000102 -44.533605052999967,167.82320595300007 -44.530970025999977,167.801320061000098 -44.510678837999912,167.791720971000018 -44.501469435999965,167.803479743000025 -44.495060257999967,167.814726307000115 -44.488928841999929,167.820886287000121 -44.485569167999984,167.833799407000015 -44.478523991999957,167.857635944000123 -44.465512427999947,167.876019251000116 -44.455471301999978,167.92111451300002 -44.430809576999948,167.928701552000149 -44.426655750999942,167.997100227000033 -44.389165093999949,168.006117524000047 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-44.080644534999962,168.582272083000049 -44.086694698999963,168.5937948750001 -44.097346148999968,168.599456761000084 -44.102578073999943,168.624780148000013 -44.125964127999964,168.633335700000089 -44.133859694999956,168.634885377000046 -44.135289532999927,168.639874340000119 -44.139892077999924,168.623044880000094 -44.149181213999931,168.575215190000108 -44.175551040999942,168.573355032000109 -44.17657569899994,168.544040549000101 -44.192714581999951,168.521050570000085 -44.205359985999955,168.518617339000116 -44.206697765999927,168.432323633000124 -44.255774295999956,168.413641506000118 -44.266379434999969,168.407930165000039 -44.266150497999945,168.370108459000107 -44.264627098999938,168.354848383000103 -44.264008830999941,168.28088285700008 -44.260982603999935,168.256676420000076 -44.259981604999943,168.246447166000053 -44.259557022999942,168.238693349000073 -44.259234565999975,168.237879636000116 -44.259200693999951))) Author last name Last name of the Author Sutherland Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? PhD Advisers Who supervised/advised this student Norris, R.J. Abstract The Abstract for this thesis This thesis presents improved constraints on the tectonic evolution of the Cenozoic Australia-Pacific plate boundary through southern New Zealand. Two independent lines of enquiry were followed: 1. The constraints provided by seafloor spreading data from south of New Zealand were refined. This was possible due to the release of Geosat data, and recent geophysical cruises SW of South Island. 2. Middle Miocene-Quaternary sediments in south Westland were investigated, with particular attention to their provenance and structure. Australia-Pacific finite rotations based on a 3-plate (Australia-Antarctica-Pacific) model are presented (GEOS-3P results). Features identified from Geosat data are used to directly determine a late Eocene ( --45 Ma) Australia-Pacific fmite rotation, and to refine Eocene-Miocene plate motions (--45-20 Ma; GEOS-NZ results). Inverting the late Eocene finite rotation to calculate movement in Antarctica, implies dextral oblique extension in the Ross Embayment and almost pure dextral movement in the Queen Maud Range. In the Hokuri Creek region, postglacial offsets of Lake McKerrow and moraines require an Alpine Fault displacement rate of 26 ±6 mm/yr. Slickensides, fault exposure and offset topography suggest almost pure dextral movement on a subvertical fault. Locally, there is a small component of up-to-thewest movement By using displacement to calculate age, moraines indicate that ice was most extensive prior to --40 kyr, and following a significant interstadial, two further moraine deposition events occurred at -26 and -17 kyr. Displaced river channels indicate the last two coseismic displacements on the Alpine Fault were 9 m (penultimate) and 8 m, suggesting characteristic earthquake behaviour with recurrence interval330 ±90 yrs and Mw >7.5. The last displacement occurred just after 370 ±150 ca1 yrs b.p. In the Cascade Valley, Halfway Formation (Pliocene) Fiordland-derived marine conglomerates are offset from their source area by >95 km. Lateral moraines stretching from the coast to the Alpine Fault are undissected by faults. The oldest moraines are Pyke Valley-derived (offset -18-32 km), suggesting they have an age >0.5 Ma, consistent with macrofaunas from associated uplifted marine glacial silts (Teer Formation). The younger moraines contain varying proportions of Ultramafic and Haast Schist, reflecting progressive capture of tributaries due to Alpine Fault offset The offset Halfway Formation, combined with the undissected nature of moraines, suggests Pliocene-recent Alpine Fault displacement at '?:.27 ±4 mm/yr. The fossiliferous Halfway and Teer Formations suggest uplift on the coast at -0.1-0.5 mm/yr. Miocene (-5.5, 7.5, 9 Ma) conglomerate cuttings from Waiho-1 borehole, central Westland, are mainly derived from NW of the Alpine Fault, but contain significant metagreywacke and minor high grade metamorphic clasts (some garnetiferous). This suggests reverse movement on the South Westland Fault Zone in middle-late Miocene time. Source areas SE of the Alpine Fault (mainly greywacke terranes, but minor Fiordland detritus) provided the remainder of the sediment. At -5 Ma the sedimentation rate recorded by Waiho-1 borehole greatly increases, and sediments are mainly derived from SE of the Alpine Fault. The change in provenance from volcanogenic (4.5 Ma sample) to Torlesse greywacke and Haast Schist (4.0 Ma sample) reflects tectonic transport of the borehole site past the Dun Mountain and other volcanogenic basement terranes. Comparison of the provenance change with plate displacement estimates, suggests the Dun Mountain ophiolite belt had significant curvature at the beginning of the Pliocene, and that Pliocene-Quatemary deformation was concentrated near to the Alpine Fault Tititira Formation sediments (middle-late Miocene) exposed in south Westland are mainly derived from NW of the Alpine Fault, but contain significant metagreywacke, metavolcanic, and high grade metamorphic clasts. Provenance and paleocurrents suggest south Westland was adjacent to, or SW of Fiordland during deposition, but that Fiordland had only limited relief and material was being transported across it. Sediments and volcanics reworked from all stratigraphically lower horizons, deformation of soft sediment, intraformational unconformities, and the incorporation of slide sheets up to -10 km across (Jackson Formation), suggest syntectonic sedimentation and active reverse movement on the South Westland Fault Zone during deposition. The regional onset of sedimentation at -12 Ma is inferred to have been due to a change in plate vector, and the coarsening upward sequence of facies is interpreted to have been due to the growth of a deforming wedge bounding the SE edge of the Westland Sedimentary Basin. The plate boundary through South Island has developed in direct response to the moving AustraliaPacific pole of rotation. Prior to plate boundary inception, the late Eocene finite pole suggests the Dun Mountain ophiolite belt, and other basement terranes exposed in South Island, were continuous and approximately straight. The late Eocene-early Oligocene instantaneous rotation pole was close to South Island, causing rapid spatial changes in plate boundary character and displacement rate. South of South Island, rifting resulted in the formation of ocean crust, and convergence is predicted to the north. As the rotation pole moved SE during the Oligocene-middle Miocene, there was a gradual increase in strike-slip displacement rate through southern South Island from <5 mm/yr to -2 cm/yr. An inferred jump of the Australia-Pacific rotation pole at -12-14 Ma caused an increase in strike-slip displacement rate in South Island to --4 cm/yr, and resulted in the initiation of subduction adjacent to Fiordland, with associated movement on the South Westland Fault Zone. At -5 Ma another jump in the Australia-Pacific rotation pole caused the displacement rate in South Island to remain at --4 cm/yr, but introduced a small component of convergence on the Alpine Fault. A change in partitioning of plate boundary deformation since -5 Ma has caused uplift and the emergence ofFiordland. Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. South Island Thesis description Number of pages, maps, CDs, etc. 1 v. (various pagings) : ill. (some col.), maps ; 30 cm. Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Identifier An unambiguous reference to the resource within a given context 1995Sutherland Creator An entity primarily responsible for making the resource Sutherland, Rupert. Date A point or period of time associated with an event in the lifecycle of the resource 1995 Title A name given to the resource Late Cenozoic tectonics in the SW Pacific, and development of the Alpine Fault through southern South Island, New Zealand Subject The topic of the resource Tectonics Quaternary geology Alpine Fault plate tectonics Quaternary geology slip rates Tertiary sediments https://theses.otagogeology.org.nz/files/original/2cc3ba15ce67aaa613eb3ec6a500e932.pdf f2c3341f404173994a92b271e4e9be97 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Geology theses OU Geology thesis Thesis or dissertation completed by University of Otago Geology students Location WKT (WGS84) The location stored in WKT (WGS84) format POLYGON ((167.442498185467628 -45.467839473745322,167.551997293963865 -45.473130760034692,167.545961569657749 -45.535481906916466,167.436028865323379 -45.529925660485375,167.442498185467628 -45.467839473745322)) Author last name Last name of the Author Staite Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? BSc(Hons) Advisers Who supervised/advised this student Cooper, A.F. Abstract The Abstract for this thesis The Eastern Manapouri Province of Turner (1937a) consists of at least two identifiable generations of plutonism; a 303±4.8 Ma granite, and a 160-155 Ma suite of gabbroic to granitic composition. These can be divided into three main groups: (1) The Pohuruhuru Granite (new name), anI-type Carboniferous granite probably representing local basement to the MTZ. (2) The Holmwood Island Gneisses and the Beehive Epidiorite, ea. 160 Ma gabbros and diorites metamorphosed to amphibolite fades conditions in an event correlated with the metamorphism of the Fraser Complex of Westland. Some of these rocks are magnetic, and are regarded as the cause of the Manapouri magnetic anomaly. (3) The Matarua Quartz Monzonite (new name), the Western Orthogneiss and the Pomona Island Granite, a suite of I-type granitic rocks intruded syn- and post-metamorphically. The 155±2 Ma Pomona ~land Granite emplacement represents the final event in this sequence. Most lithologies occur as xenoliths from metre to kilometre scale within later rock types. Holmwood Island Gneiss and Beehive Epidiorite in particular occur as 'sheets' within later granites. A vertica~possibly active oblique slip fault scarp with a 100 m cataclasite zone, previously interpreted as the western boundary of the Eastern Fiordland Belt (Smith, 1993) is present, but regionally insignificant displacement suggests that it is not an important geological boundary. Geochemical analysis shows a prevailing alkali-calcic continental island arc trend for these rocks, and linear trends on Harker discrimination diagrams demonstrate a common tectonic environment for all lithologies . • All units (except the Pohuruhuru Granite) formed in the same intrusive event, between 160 and 155 Ma. Formation was at depth (at least 22 km) with successive intrusions into the base of an island arc, with each intrusive rock type picking up xenoliths of earlier rocks. Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. Lake Manapouri Thesis description Number of pages, maps, CDs, etc. 77 leaves : ill. (some col.), maps (some col.) ; 30 cm. Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Identifier An unambiguous reference to the resource within a given context 1995Staite Creator An entity primarily responsible for making the resource Staite, Christopher Gilbert, 1974- Date A point or period of time associated with an event in the lifecycle of the resource 1995 Title A name given to the resource Geology of the eastern Manapouri province Subject The topic of the resource Igneous petrology Metamorphic petrology Beehive Pomona Island Rona Island https://theses.otagogeology.org.nz/files/original/770ffe4925fffdc46fac093c8a21dd25.pdf 41ade0d08cd6dec620a47d48c6116912 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Geology theses OU Geology thesis Thesis or dissertation completed by University of Otago Geology students Location WKT (WGS84) The location stored in WKT (WGS84) format POLYGON ((173.134258605697909 -41.563021686582239,172.981965957541377 -41.494462058532086,173.05703847102231 -41.435106615298807,173.096937402179009 -41.432220010811541,173.158096561892592 -41.383533634674734,173.256022233036333 -41.420536361193165,173.134258605697909 -41.563021686582239)) Author last name Last name of the Author Owen Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? PhD Advisers Who supervised/advised this student Landis, C.A. Campbell, J.D. Abstract The Abstract for this thesis Murihiku and Maitai strata in the Wairoa-Lee and Wai-iti rivers areas form two parallel NE trending sedimentary belts; the Murihiku occurring as a number of imbricated fault blocks, the Maitai synclinally folded (Nelson Regional Syncline) and imbricated by SE dipping reverse faults. Eight formations ranging from upper Etalian to Otamitan (Middle to Late Triassic) are mapped in the Richmond Group, Murihiku Supergroup, including one new unit, the Church Valley Formation (Oretian). Nine formations are mapped in the Maitai Group, including one new unit, the Chrome Creek Formation. and a three-fold subdivision is recognised, comprising the Barrington Subgroup (new), Port Hardy Subgroup (redefined after Waterhouse 1987), and the Stephens Subgroup. Mappable Late Permian atomodesmatinid limestone and sandstone bodies up to 1-2 km dimension within the Stephens Subgroup are allochthonous and informally referred to as Martins olistoliths. The highest in situ Perrnian fauna occurs in the Tramway Formation. Petrologic correlation of Martins olistoliths and Wooded Peak Limestone suggests a Dorashamian age for the latter. Durvilleoceras woodmani Waterhouse 1973 is assigned to the family Flemingitidae, and together with cf. Hypophiceras sp., suggests an Induan (Early Triassic) age for the Greville. A new ammonoid fauna collected from limestone olistoliths in the lower Stephens Subgroup is described, and indicates a maximum early Olenekian age for the Stephens Subgroup. The Perrnian fauna is characterised by atomodesmatinids,locally bryozoans and brachiopods, the Triassic faunas by ammonoids,locally echinoderms and sessile foraminifera. Age considerations and rudite petrology suggest a hiatus within or between the lowermost Maitai and underlying Dun Mountain Ophiolite Belt. Murihiku rocks belong entirely to zeolite mineral facies. Three metamorphic zones are mapped in the Maitai (laumontite, lawsonite, prehnite-pumpellyite). The sporadic occurrence of lawsonite in the lawsonite zone probably largely reflects volatile activities, nature of replaced phases, and partially bulk composition. The Maitai Group was derived from a largely calc-alkaline continental volcanic arc and deposited mainly by sediment gravity flows in a deep, elongate eastward sloping basin. Turbidite paleoflow was mainly obliquely along the basin with locally perpendicular to opposing flows suggesting point sources along the western margin. Small scale (up to ea. 40 m thick) coarse tuff turbidite sequences reflect episodes of explosive volcanism. Formation scale (hundreds of metres thick) laterally extensive (hundreds of kilometres) repetition of sandstone dominated and mudstone dominated units must be extrabasinally controlled and is attributed to fluctuations in relative sea-level. Contourites (largely terrigenous with a very small hydrogenous component) and direct fallout tuffs are locally evident. Sedimentary olistoliths/clasts in the Stephens Subgroup were formed in a shallow to marginal marine environment to the west of and largely contemporaneously with the Maitai. The geochemistry of igneous conglomerate clasts, tuffs, and probably also epiclastic sediments has been significantly modified during diagenesis and/or prehnite-pumpellyite and lawsonite-quartz-albite facies metamorphism of the Maitai Group in Nelson. Colour of Maitai sediments reflects primarily oxidation state of iron and abundance of carbonaceous matter, and secondarily metamorphic mineralogy. Red (hematitic) mudstones are possibly slightly enriched in iron. The hematite is probably largely detrital but some diagenetic to metamorphic effects are locally recognised. Three petrological suites are distinguished in the Maitai Group: (1) Barrington Subgroup (lower Maitai); characterised by atomodesmatinid debris and dacitic tuffs in addition to ubiquitous mafic volcanic detritus. The Tramway Formation also includes quartz- and phyllite-rich litharenites indicating additional plutonic and low-grade metasedimentary provenance. (2) Port Hardy Subgroup (middle Maitai); comprising largely epiclastic mafic volcanogenic sediments. (3) Stephens Subgroup (upper Maitai); characterised by andesitic to rhyolitic tuffs in addition to the ubiquitous mafic volcanic detritus. Reworked shell fragments are common in Stephens rudites. The Richmond Group (Murihiku Supergroup) was derived from a largely calc-alkaline continental volcanic arc and is probably entirely marine. Shellbeds are common and largely worked by marine processes. Bottom current deposits are locally evident. Conclusive sediment gravity flow deposits (paleoflow ranging from SE-NE directed) are only recognised in the Te Arowhenua-Wantwood and Church Valley-Saxton formations which formed as submarine channel-overbank complexes. Although probably shallow marine the depositional environment and processes of the other units remains unclear. Te Arowhenua-Wantwood (Etalian to Kaihikuan) and Garden-Problematica-Max (upper Oretian to Otamitan) formations are largely volcanogenic,locally tuffaceous. The Wells Formation (Kaihikuan) had a mixed granitic and tuff provenance, and Church Valley-Saxton formations (lower Oretian) largely granitic provenance recording unroofmg of shallow volcanic-arc plutons and temporary cessation of explosive volcanism. Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. Nelson Thesis description Number of pages, maps, CDs, etc. 1 v. (various pagings) : ill. (some col.), maps ; 30 cm. Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Identifier An unambiguous reference to the resource within a given context 1995Owen Creator An entity primarily responsible for making the resource Owen, Stuart Richard. Date A point or period of time associated with an event in the lifecycle of the resource 1995 Title A name given to the resource Maitai and Murihiku rocks (Permian and Triassic) in Nelson, New Zealand Subject The topic of the resource Sedimentology Structural geology Ammoroide Healington Group Maitai Group Permian Triassic https://theses.otagogeology.org.nz/files/original/cb6ca56f452fe0f95ef900bacf1c64b9.pdf f623ec21724dad366291d1e017708b17 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Geology theses OU Geology thesis Thesis or dissertation completed by University of Otago Geology students Location WKT (WGS84) The location stored in WKT (WGS84) format POLYGON ((167.603757158000121 -45.408393326999942,167.606603208000024 -45.400543415999948,167.606878792000089 -45.399783184999933,167.612995018000106 -45.382905839999978,167.613714074000086 -45.380920963999984,167.620789638000019 -45.361381842999947,167.627246164000098 -45.343539864999968,167.641871748000085 -45.303079935999961,167.642230012000027 -45.302908817999935,167.697853712000096 -45.276314722999984,167.783726599000033 -45.235161090999952,167.784016813000108 -45.235020864999967,167.874853606000102 -45.239369841999974,167.902713611000081 -45.240687557999934,168.038538150000022 -45.247013221999964,168.088845288000016 -45.305423859999962,168.079080647000069 -45.420130054999959,168.079035609000016 -45.420658018999973,168.06333587000006 -45.604083623999941,167.61541060400009 -45.584369003999939,167.615318217000095 -45.583914235999941,167.613745652000034 -45.576172353999937,167.600949683000067 -45.513097909999942,167.590268868000067 -45.460341831999983,167.58834945600006 -45.450850830999968,167.591880585000013 -45.441126355999984,167.597557216000041 -45.425485951999974,167.603757158000121 -45.408393326999942)) Author last name Last name of the Author Manville Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? PhD Advisers Who supervised/advised this student Landis, C.A. Abstract The Abstract for this thesis The late Miocene to Pliocene Prospect Formation forms the topmost non-glacial unit in the central Te Anau basin, with its distal correlatives extending south into the northern Waiau basin. The lower part of the formation consists of a number of coarse-grained deltaic systems which prograded across the originally marine Te Anau basin from tectonically uplifted source areas to either side. The upper part of the formation is dominated by gravelly . braided stream deposits. Fieldwork has identified a number of fluvial lithofacies assemblages, including massive conglomerate, cyclothemic sands, and coal-bearing sequences. Several petrofacies, based on the provenance signature of the sediments are recognised in addition. Five stratigraphic members have been defined within the Prospect Formation. The Prospect Formation is grouped with its distal equivale~~, the Rowallan Sandstone and Te Waewae Formation into a single lithostratigraphic group, named here the 'Wilderness Group'. Analysis of over 200 km of seismic lines from the central Te Anau basin has identified the base of the formation, in addition to two seismic members and a major internal reflector between them~. Structure contours on the base of the Prospect Formation derived from the '( seismic data permit the construction of a stratigraphic correlation chart foi,:Unit, allowing the relative st~atigraphic positions of widely dispersed outcrops to be constrained. The maximum thickness of the formation is estimated at in excess of 3.5 km. The Prospect Formation is largely derived from three $eparate and petrographically distinct basement terranes, the Fiordland Complex, the Caples Terrane, and the Takitimu Group (southern Brook Street Terrane). Analysis of clast populations from gravels and the point-counting of sands from throughout tp.e Prospect Formation demonstrates variations in - the relative contributions of these source areas in both time and space. Palaeocurrent data confirm the pattern of sediment transport and dispersal systems indicated from provenance data, with a southwesterly directed major fluvial system sourced from the Caples Terrane and an easterly directed fluvial system sourced from Eastern Fiordland. These systems unite in the southern Te Anau basin and flow south as a single trunk system through the neck between Fiordland and the Takitimu Mountains. The age of the Prospect Formation is constrained by internal pollen dates and the age of the youngest underlying marine sediments. Pollen dates cluster into two groups: an older, latest Miocene (Tongapurutuan-Kapitean) group, an:d a younger, Pliocene (WaipipianNukumuruan) group. Palynofloral assemblages also indicate palaeoclimatic conditions during the period of Prospect Formation deposition, with a deterioration from a warm temperate climate in the late Miocene to a cool or cold temperate climate in the Pliocene. Studies of clay minerals in Prospect Formation sands indicate that most of the clay fraction is detrital in origin, although authigenic smectite is common in Caples-derived sands iii ,I :: ,'I, and minor authigenic kaolinite is found in Fiordland-derived material. Diagenetic carbonates are more diverse, with several generations of dolomite and high-Mg calcite cements developed in parts of the basal marine Prospect Formation. Calcite cements of various morphologies developed in the fluvial members of the Prospect Formation suggest a seasonal climate with periods of aridity in the basin. A single occurrence of an authigenic zeolite mineral, heulandite, is recorded. The Prospect Formation is interpreted to be a syn-tectonic deposit related to the rapid uplift of the basement blocks surrounding the depositional basin. The Te Anau basin is one of several structurally controlled basins in the Western Southland area, adjacent to the IndoAustralian/ Pacific plate boundary in the southern South Island of New Zealand. The area is composed of a mosaic of tectono-stratigraphic basement terranes and their bounding major fault systems, accreted to the Palaeozoic and Mesozoic margin of Gondwana. Changes in the convergence vector across the adjacent plate boundary ca~sed by progressive southeastward migration of the relative pole of rotation during the mid to late Miocene, produced variations in the regional tectonic regime in Western Southland and re-activation of these old fault systems. The position of the continental Challenger Plateau adjacent to the Fiordland Complex crusta! block during the late Miocene, coupled with an oblique convergence vector across the plate boundary adjacent to Western Southland caused Fiordland to rotate clockwise as it was forced northwards along a restraining curve in the Alpine Fault plate boundary. This transferred a component of dextral compressive strain into the more easily deformed Western Southland area to the east, re-activating pre-existing major fault systems. The Caples Terrane was uplifted by a combination of reverse motion on the Livingstone Fault and distributed shortening within the terrane, with the Fiordland Complex uplifted between the Te Anau and Alpine Faults. Theintervening Te Anau basin subsided due to a combination of relative motion and the geometry of the basin-bounding fault systems forming a releasing bend at the basin's southern end. The coupling of large volumes of coarse-grained sediments derived from source area uplift and the creation of accommodation space in the adjacent basin resulted in the deposition of the Prospect Formation. Continued northward movement of the Challenger Plateau on the Alpine Fault during the last 3-5 million years has shifted the locus of maximum deformation north, uplifting the Southern Alps;, and ending deposition of the Prospect Formation in Western Southland. However, eversion of the Te Anau basin and east-west shortening across it, begun in the Pliocene, continues, and the area is still tectonically active. Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. Te Anau Thesis description Number of pages, maps, CDs, etc. 1 v. : ill. (some col.), maps ; 30 cm. Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Identifier An unambiguous reference to the resource within a given context 1995Manville Creator An entity primarily responsible for making the resource Manville, Vernon. Date A point or period of time associated with an event in the lifecycle of the resource 1995 Title A name given to the resource Prospect formation : sedimentology, stratigraphy & significance : late miocene-pliocene syntectonic sediments of the Te Anau Basin, western Southland, New Zealand Subject The topic of the resource Sedimentology Tectonics Sedimentary petrology Structural geology deltaic sedimentation fluvial Pliocene Prospect formation https://theses.otagogeology.org.nz/files/original/1b43e45fdfba09d0aad1465cfa58ad68.pdf da59ffefe477a9c064298a5e5dc8ea37 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Geology theses OU Geology thesis Thesis or dissertation completed by University of Otago Geology students Location WKT (WGS84) The location stored in WKT (WGS84) format POLYGON ((163.378953558654871 -78.244129495695148,163.320451391143621 -78.24399711408131,163.289129795634267 -78.239039087695318,163.223953103289858 -78.228697807990926,163.021908104769608 -78.196431555031523,163.022455241220285 -78.189724459182656,163.022634293744574 -78.187527903959761,163.024993598917746 -78.158509345475423,163.056682040419474 -78.153071896379089,163.126425354737165 -78.141074798320034,163.217779473052445 -78.125298088248812,163.342141622797953 -78.103707029200748,163.452640433283364 -78.10354058335993,163.505619187428607 -78.103445532892835,163.597444721003626 -78.103257376214529,163.712650340725361 -78.102979315955864,163.734187422125501 -78.102922148109315,163.837061729357657 -78.116479442583199,163.861344668558957 -78.119669704847993,163.935214505393787 -78.12935153118022,163.935318932901822 -78.136936959188574,163.935545277817056 -78.153345586071509,163.935779761392126 -78.170297289583502,163.9360470408445 -78.189561742054025,163.620311001580689 -78.226923820518422,163.604456902633473 -78.22878459782082,163.515357308887332 -78.239215072326232,163.471650573727345 -78.244314865654502,163.434518452475544 -78.244244201288069,163.415921545302155 -78.244207007010019,163.378953558654871 -78.244129495695148)) Author last name Last name of the Author Jones Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? MSc Advisers Who supervised/advised this student Craw, D. Abstract The Abstract for this thesis Four granitoid plutons, belonging to the DV1a and DV1b plutonic suites, intrude Koettlitz Group metasediments in the Walcott Bay area, South Victoria Land, Antarctica. The plutons display markedly different structural styles, reflecting their emplacement during progressive uplift in the Paleozoic Ross Orogeny. In order of intrusion: 1) Bonney Pluton (530-520 Ma), a regionally extensive hornblende-biotite body, with the southern end mapped in the Walcott Bay area. The pluton syn-kinematically intrudes the metasediments at mid-upper amphibolite fades conditions, 7<>0°C, 5±1 kbars. Fabric development is variable with magmatic flow fabrics at the NE margin and central parts of the body changing to solid-state fabrics along the SW margin Host rock foliations are parallel to pluton margins. 2) Armitage Pluton is a hornblende-biotite DV1a body, chemically distinct from Bonney Pluton, which intrudes central parts of Bonney Pluton at a late stage of the host granite crystallisation. A weak magmatic lineation is present, sub-parallel to magmatic lineations in central parts of Bonney Pluton. 3) Chancellor Orthogneiss is a strongly deformed biotite DV1b body which discordantly intrudes metasediments as randomly orierued dykes and stocks. Solid-state deformation fabrics overprint magmatic fabrics throughout the body indicating post-emplacement ductile deformation. This body was emplaced close to or at the brittle-ductile transition, at least biotite zone, 250-350°C, 10-15 km depth. 4) Hidden Granite is an undeformed DV1b biotite granite which discordantly intrudes metasediments and older granitoid bodies as randomly oriented dykes and stocks. The granite was emplaced into a brittle host rock, above the brittle-ductile tranisition, less than 250-350°C. Hidden Granite is coevally intruded by a swarm of gabbroic to intermediate plugs, dykes and near horizontal· sills (1-40m thick) of the Keyhole Mafic Suite, a genetically related group of mafic bodies with high-K calc-alkaline affinities. Contact relations between the mafic bodies and host granite such as: lobate to crenulate boundaries; enclave swarms; diffuse flame-like contacts; a lack of chilled margins and back-dyking of the mafic bodies indicates the mafic bodies are coeval with Hidden granite. The mafic bodies are divided into two end-member groups (irregular plugs and sheet-like bodies), based on structural features. Contact relations of the irregular plugs and the host granite are generally more variable than the sheet-like bodies. The orientation of the plugs is random whereas the consistent NE-SW orientation of vertical sheet-like bodies indicates a degree of regional structural control on their emplacement. The degree of interaction between mafic and felsic phases generally decreases as the mafic bodies become more sheet-like in form. These changes could reflect the increasing crystallinity of the host granite.Field observations, petrology and geochemical data indicates chemical interaction accompanies physical mixing in the strongly mingled margins to form hybrid zones (at least at a centimetre scale). However, chemical mixing is most likely insignificant at margins of the sheet-like bodies, even though in detail, these boundaries are quite gradational. Vertical NE-SW oriented bodies of the Keyhole Mafic Suite are parallel to a younger swarm of mafic and felsic porphyry dykes which consistently strike 040°. The dyke orientation suggests crusta! extension during dyke emplacement was oriented NW-SE. This extension direction is approximately parallel to the elongation direction of post-emplacement ductile deformation fabrics in Chancellor Orthogneiss and suggests a geometric relationship between the ductile and brittle fabrics. The younger dyke swarm was emplaced towards the end of the Paleozoic Ross Orogeny and forms the dominant NE-SW brittle fabric in the basement rocks. A sequence of brittle fabrics in Hidden Valley indicates repeated reactivation of the inherited crustal anisotropy. The sequence is as follows: 1) Paleozoic NE-SW oriented dykes; 2) hydrothermally altered quartz-filled extensional fractures which occur within or parallel to the dykes; 3) NW-SE dextral faults offset dykes and fractures at right angles and are steeply dipping (to near vertical) with strikes between 110° to 140°; 4) NE-SW oriented structures crosscut young s'urface features and lie parallel to the dykes. These brittle features represent a late Quaternary sinistral reactivation of the pre-existing anisotropy. The late Quaternary faults indicate that this area of South Victoria Land is still tectonically active as indicated by the high topographic relief and active alkaline volcanism in the rift zone. Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. Walcott Bay South Victoria Land Antarctica Thesis description Number of pages, maps, CDs, etc. xiii, 198 p. : ill. (some col.), maps (some col.) ; 30 cm. Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Identifier An unambiguous reference to the resource within a given context 1995Jones_S Creator An entity primarily responsible for making the resource Jones, Sarah Anne. Date A point or period of time associated with an event in the lifecycle of the resource 1995 Title A name given to the resource Structural evolution of northern Walcott Bay, South Victoria Land, Antarctica / Sarah Anne Jones. Subject The topic of the resource Structural geology Antarctica South Victoria Land structure Walcott Bay https://theses.otagogeology.org.nz/files/original/471f6f8a0fa2e23f35cf3c5343358660.pdf a8abfa3602f363b1d43934921d121b5a Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Geology theses OU Geology thesis Thesis or dissertation completed by University of Otago Geology students Author last name Last name of the Author Jones Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? MSc Advisers Who supervised/advised this student Fordyce, R.E. Abstract The Abstract for this thesis A new genus and new species of large fossil penguin is described, based on three well preserved substantially complete articulated skeletons. Elements or complexes represented are the rostrum; parts of the cranium including quadrate, mandible, many vertebrae and the pygostyle, many ribs, sternum, coracoid, scapula, all of the forelimb, pelvis, femur, tibia, tarsus, and most of the digits. Six previously described supposedly indeterminate specimens are referred to the new taxon. All . specimens are from the Kokoamu Greensand (upper Whaingaroan to Duntroonian · Stage, Upper Oligocene) of the Duntroon and Waihao districts, South Island, New Zealand. The newly described material usefully links many elements known previously from isolated bones. The partial skeletons thus provide much phylogenetic and functional information hitherto unavailable through the study of single bones. This information helps elucidate broader evolutionary relationships amongst fossil penguins. In this study, potentially useful taxonomic characters were identified using both literature and comparisons between the new fossil species and other described fossil and modern taxa. The states for these characters were determined for twenty nine modern, fossil and outgroup taxa including a possible ancestral fossil penguin (OU 12651). Cladograms were generated using the program PAUP version 3.1 (Phylogenetic Analysis Using Parsimony). The resulting consensus tree reinforced the monophyly of penguins. Within the penguin clade, six discrete groups were identified, each formed by either multi~axa, monophyletic clades or clusters of monospecific paraphyletic stem groups. Each group was separated by many state changes; of note, there is a major structural gap between Eocene/Oligocene penguins (including the new species), and later Neogene to Recent taxa. The new species was positioned in the middle of the stem group. Analyses of functional morphology and scaling in th~ new fossil species identified a range of skull pectoral girdle, forelimb and hindlimb features that differed from modem species. A body mass estimate of 60 kg is based on forelimb surface area. The stratigraphic distribution of fossil species and the disappearance of large fossil penguins is discussed in light of the results of the phylogenetic and functional analysis. Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. Canterbury Otago Thesis description Number of pages, maps, CDs, etc. vii, 188 leaves, 35 leaves of plates : ill. (some col.), maps ; 30 cm. Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Identifier An unambiguous reference to the resource within a given context 1995Jones_CM Creator An entity primarily responsible for making the resource Jones, Craig M. Date A point or period of time associated with an event in the lifecycle of the resource 1995 Title A name given to the resource Systematics of a new fossil penguin (Spheniscidae) from the Kokoamu Greensand (Duntroonian stage, upper Oligocene), South Island, New Zealand Subject The topic of the resource Paleontology Sedimentology Aves Canterbury Foraminifera Otago https://theses.otagogeology.org.nz/files/original/3c079a4363d2febcd33901a461314b01.pdf a6bccff2151a9a4a08bbfd1bbe8912be Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Geology theses OU Geology thesis Thesis or dissertation completed by University of Otago Geology students Author last name Last name of the Author Henderson Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? MSc Advisers Who supervised/advised this student Koons, P. Abstract The Abstract for this thesis A number of techniques are reviewed with the intention of identifying the best method for deformation analysis. The method finally adopted for deformation analysis consists of two data reduction steps. Firstly, the geodetic observation data are used to adjust the survey station coordinates. In the second step the results of the first step in conjunction with a model for the deformation are used to estimate the motion within the region. Statistical testing is emphasised throughout the coordinate adjustment phase and the deformation modelling procedure. Estimates for strain and rotation rates are presented in a different fashion to those of previous studies; contours of the measurements are superimposed on their error .surfaces. This allows improved accuracy in reading the results of the analyses. Statistical testing shows that the deformation within Marlborough is statistically compatible with a constant station velocity model. This indicates that variations of station velocity over the time between the first and last surveys are insignificant. Inhomogeneous analysis (polynomial modelled velocity) is found to be superior to the method of forming many homogeneous strain rate estimates. Polynomial based deformation models appear to be a reasonable representation of motion within regions where survey stations are evenly spaced and where the discontinuous part (eo-seismic deformation) of the velocity surface is much smaller than the continuous part (inter-seismic deformation). In regions where survey stations are not evenly distributed or the complexity of the polynomial model is not easily adjusted to the amount of available information, then connected low-order polynomial surfaces appear to be a reasonable method of modelling the motion. The results of the analyses suggest a shear strain rate maximum over the Clarence and Awatere faults. Most of the Marlborough Fault Zone east of the Wairau Fault is experiencing shear strain rates of at least 3 x 10-7 I year. Generally the shear strain rate results are compatible with previous geodetic shear strain rate estimates within the region. Dilatational strain rate estimates are generally of low precision, however, significant variations of the dilatation rate surface are found. The geodetic results indicate that rotation rates are progressiyely more clockwise towards the west within the southern portion of the Marlborough Fault Zone. This trend is not carried on into Marlborough, where the relative rotation becomes progressively more clockwise towards the south. The orientation of the principal axis of horizontal s~ear strain over most of the study region is found to be statistically compatible with a model of shear strain release on the major faults. However, average inter-seismic shear strain rates, estimated from the slip-rates of major faults, are incompatible with the geodetic measurements. The geodetic measurements of dilatational strain rate are also found to be generally incompatible with the shape of the dilatational strain rate surface approximated from uplift rates. A different relationship ' between tectonic rotation rates and geodetic measurements from that described by Lamb (1987) is presented. Estimated relative tectonic rotation rates are found to be of very low precision and are not statistically significant. The total relative velocity over the Marlborough Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. South Island Thesis description Number of pages, maps, CDs, etc. 179 leaves : ill., maps ; 30 cm. Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Identifier An unambiguous reference to the resource within a given context 1995Henderson Creator An entity primarily responsible for making the resource Henderson, Christopher Mark. Date A point or period of time associated with an event in the lifecycle of the resource 1995 Title A name given to the resource Geodetic analysis of horizontal crustal deformation within the northern South Island, New Zealand Subject The topic of the resource Geophysics crustal deformation geodetic South Island strain https://theses.otagogeology.org.nz/files/original/8ac1fe40550315b20ae04c65d4912fde.pdf f16d4d1f777592b5130f0ddb7e3550d9 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Geology theses OU Geology thesis Thesis or dissertation completed by University of Otago Geology students Location WKT (WGS84) The location stored in WKT (WGS84) format POLYGON ((170.753682231000084 -44.708638358999963,170.753463203000024 -44.714017662999936,170.748205876000043 -44.713903039999934,170.725562236000087 -44.71340173699997,170.715766650000091 -44.713354789999983,170.715308649000121 -44.722231465999982,170.702876873000037 -44.72206889399996,170.702689695000117 -44.730748310999957,170.670184109000047 -44.730199597999956,170.670464972000104 -44.712492133999945,170.703099966000082 -44.712949031999983,170.703593806000072 -44.700332404999983,170.704150882000022 -44.686154998999939,170.691761635000034 -44.685744285999931,170.691908952000063 -44.681218773999944,170.692059052000104 -44.676702313999954,170.692865618000042 -44.676727253999957,170.704444967000086 -44.677067963999946,170.704737933000047 -44.677078222999967,170.705681334000019 -44.650259349999942,170.730798192000066 -44.650664750999965,170.732490595000058 -44.605436076999979,170.770174484000108 -44.606261490999941,170.768255261000036 -44.651085049999949,170.756050174000052 -44.650666619999981,170.753682231000084 -44.708638358999963)) Author last name Last name of the Author Ford Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? MSc Advisers Who supervised/advised this student Landis, C.A. Lee, D. Coombs, D.S. Fordyce, E. Cox, S. Abstract The Abstract for this thesis In this report, emphasis is placed on defining lithologies and their extent, along with geochemical consideration of the sedimentary rocks and their metamorphic equivalents. Torlesse sedimentary rocks in the Meyers Pass area are mapped. Paleontological methods and biostratigraphy nave also received much attention. Atomodesmatinid bivalve macrofossils, redeposited in flysch, and. Permian conodonts (Neogondelella and Xaniognathus) in an allochthonous block of siliceous pelagite, are recorded. Conglomerates are largely composed of acid extrusive and hypabyssal clasts dominating sedimentary clasts, all in a matrix of similar derivation and including plentiful rip-up clasts of a finer nature. Isoclinal folding of siltstone/fine sandstone and pelagite in an allochthonous block is noted as being inconsistant with the degree of deformation in other mapped areas. The allochthonous block was deformed during accretion, while all sediments were later deformed by a regional metamorphic event. The sedimentary assemblage is consistant with tectonic accretion along an active continental margin, with the acid igneous fraction derived of subduction related plutonic activity. The dominance of extrusive types within this acid fraction, and minor amount of burial metamorphic types may indicate a young or newly reactivated subduction complex. No true acid plutonics are present as clasts in the conglomerates. Tectonic considerations relevant to incorporation of the Torlesse sediments into the New Zealand geotectonic framework are considered. Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. Meyers Pass South Canterbury Thesis description Number of pages, maps, CDs, etc. xi, 180 leaves : ill. (some col.), maps (some col.) ; 30 cm. Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Identifier An unambiguous reference to the resource within a given context 1995Ford Creator An entity primarily responsible for making the resource Ford, Philip Barry. Date A point or period of time associated with an event in the lifecycle of the resource 1995 Title A name given to the resource Geology, micropaleontology and geochemistry of permian sediments at Meyers Pass, South Canterbury, New Zealand / by Phil Ford. Subject The topic of the resource Micropaleontology Geochemistry chert conodont pelozite Torlesse