1 10 44 https://theses.otagogeology.org.nz/files/original/766e0c42eaf45d2dbfad0aabc950e4df.pdf 0bd6125d9fd91011588b1c88929983a0 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 ((167.864041996000083 -45.996994626999935,167.863345847000119 -46.00451000399994,167.837204366000037 -46.003174422999962,167.820547991000012 -46.002319221999983,167.816739627000061 -46.002124123999977,167.819069958000114 -45.977970358999983,167.786756198000035 -45.976782788999969,167.790258830000084 -45.938431369999932,167.791076567000118 -45.929469774999973,167.791856768000116 -45.920916728999941,167.829181750000089 -45.92257782799993,167.84672885800012 -45.923354770999936,167.892861828000036 -45.92538615899997,167.892456088000017 -45.930466614999943,167.891996082000105 -45.936261414999933,167.88998188000005 -45.961556069999972,167.88910050000004 -45.97262892599997,167.866386939000108 -45.971619845999953,167.864041996000083 -45.996994626999935)) Author last name Last name of the Author Arifin Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? MSc Advisers Who supervised/advised this student Norris, R.J. Campbell, R.M. Abstract The Abstract for this thesis Early Oligocene to middle Miocene sedimentary rocks of the western Ohai district are mapped, subdivided into lithostratigraphic units. The geology structures are interpreted, based on field evidence and aerial photo study. Tertiary strata are folded and faulted, in the east of the study area they are faulted against the Twinlaw basement. Two major sedimentary sequences are recognized; a transgressive sequence represented by the Orauea Mudstone, the Birchwood Lower, Middle and Upper Members, and a regressive sequence represented by the Rannock Siltstone, the Feldwick Formation, the Reipihi Formation and the Lentile Formation. The relation between these two sequences is gradational. Evidence of hard ground submarine erosion occurs in the lower part of Feldwick Formation during deposition of the regressive sequence. The sedimentology of the Birchwood Middle Member is described in terms of submarine fan, a middle-fan depositional environment is interpreted to this Member. A biofacies analyses of benthonic and planktonic foraminiferal assemblages (after methods of Phleger and of Vella) is used to assist further the interpretation of depositional environments. Clay fractions of the fine-grained sediments were analysed by X-ray diffraction methods, and show that mixed two or three layers clay mineralogy is predominant in most of the samples analysed. Petrographic analyses of sandgrade sediments in the Birchwood Middle Member permit the conclusions that the main provenance of terrigenous components are plagioclase-rich intrusive and volcanic rocks of the Takitimu and Longwood massifs. The rocks of Feldwick Formation are described and grouped into lithofacies. Local variations in sea-floor relief and several transport mechanism involved during the deposition of Feldwick Formation in inner shelf environments are interpreted by megascopic and microscopic characteristics of the lithofacies. Petrographic analyses of some specimens of the Reipihi and the Lentile Formations suggest that two main provenances can be identified, i.e. a schist provenance and a granite provenance, and that these vary in relative importance within the formation. Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. Birchwood Ohai Thesis description Number of pages, maps, CDs, etc. 148 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/. Title A name given to the resource Tertiary geology of Birchwood area, near Ohai : South Island, New Zealand. Date A point or period of time associated with an event in the lifecycle of the resource 1982 Identifier An unambiguous reference to the resource within a given context 1982Arifin Creator An entity primarily responsible for making the resource Arifin, Maximon Shah, 1947- Subject The topic of the resource Map Lithostratigraphy Sedimentology clay analysis foraminifera biofacies paleoecology https://theses.otagogeology.org.nz/files/original/4c608658f9e0ba677218e7e895515394.pdf eeca980a0a10ab9e146e741388c45f2b 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 Anderson Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? BSc(Hons) Advisers Who supervised/advised this student Landis, C.A. Reay, A. Abstract The Abstract for this thesis Beach and offshore sediments were systematically sampled and studied during this work. Textural studies resulted in both on and offshore sediments being modelled by mixing of two modes, a fine modern modal population and a coarse relict modal population. The modern mode is analogous for beach and offshore sediments, the relict mode is finer in the beaches than offshore. This fining is due to abrasion and drowning of coarser clasts by the transgressing sea. With the use of a microprobe, detrital grains were analysed and compared to analyses of minerals from inferred source areas. Appraisal of all textural, mineralogical and chemical data results in definition of the nature of the sources of the Kakanui sediments. Green hornblende and hypersthene are inferred to be derived from the rocks of the Waiau catchment or gabbroic bodies of southern New Zealand. Epidote and MnO rich garnets are derived from the Haast Schist Group. Brown hornblende, enstatite, spinel, clinopyroxene and pyrope garnet are derived from erosion of mantle derived material contained in the Kakanui Mineral Breccia or associated vents. A vent is concluded to occur approximately 4km offshore. Two sources for glauconite were concluded. Sediment from the Waianakarua River and coastal erosion of the Gees Greensand at Gees Point. Titanaugite are concluded as being derived from the Dunedin and associated alkalic volcanics of East Otago. Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. Kakanui Otago north Thesis description Number of pages, maps, CDs, etc. v. 180 p. ill. Photos. 30 cm. Location WKT (WGS84) The location stored in WKT (WGS84) format POLYGON ((170.88 -45.17, 170.92 -45.17, 170.92 -45.21, 170.88 -45.21, 170.88 -45.17)) 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 Beach and Continental Shelf Recent Sedimentation of the Kakanui District, North Otago. Identifier An unambiguous reference to the resource within a given context 1982Anderson Creator An entity primarily responsible for making the resource Anderson, SG Date A point or period of time associated with an event in the lifecycle of the resource 1982 Subject The topic of the resource Marine geology Sedimentary petrology Sedimentology Mineralogy beach sediment shelf sediment https://theses.otagogeology.org.nz/files/original/e01ae11e858f479159eb953dc63d060c.pdf 21b6bafd2c4dbf485047b9f2f7410730 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 Situmorang Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? MSc Advisers Who supervised/advised this student Landis, C.A. Campbell, J.D. Abstract The Abstract for this thesis Late Quaternary sediments in Shag Point and south Oamaru have been investigated. The Hillgrove Formation and loess deposits are distributed consistently throughout the coastal area. The lower part of the Quaternary sequence, Hillgrove basal gravel, consists predominantly of greywacke gravels and m1nor sands and silts. Two ecologic groups of macrofauna are recognised, intertidal and subtidal species. Intertidal species are Melagraphia aethiops., Micrelenchus tenebrosus., Cellana genera and the subtidal fauna consists primarily of Ostrea lutaria. This study clearly shows that paleoecology of these Quaternary sediments has close similarities with ecology of the modern fauna. Foraminifera paleoecology is in agreement with macrofauna and indicates shallow water environment. The restricted shallow water benthic foraminiferids, Notorotalia zelandica and Elphidium charlottensis are recorded abundantly. Paleoclimatic interpretations from planktic foraminiferids and Nonionella flemingi suggest a cold climate during deposition perhaps slightly cooler than mean sea temperature in present day. This evidence in conjunction with several radiocarbon 14C dates of shells (>45,000 yr.B.P.) and stratigraphic relationship with overlying sediments (loess deposits), suggest the Hillgrove basal gravel was deposited in Otiran Glaciation under interstadial conditions. The upper part, Hillgrove loose sand, is massive 1n exposure, always shows a gradational boundary with overlying sediments, and an absence of cross-bedding, suggesting a possibly beach origin. On the other hand sedimentological analyses including granulometric study and SEM investigation on quartz texture show strong evidence for an eolian origin. Loess deposits were classified into several types according to stratigraphic relations, macrofeatures and sedimentological analysis. The loess BI, moderately hard silt loam, shows conspicuous jointing pattern distinctively high proportion of green-hornblende, and is texturally coarser than other loesses. Heavy mineral study, particularly through ZTR index (Zircon-Tourmaline-Rutile) implies the presence of "intrastratal solution" in heavy minerals. This reflects the increase of maturity in older loess deposits. This might be associated with diagenetic features on the surfaces of quartz grains as quartz crystal growth, solution pits and adhering particles. Clay minerals have been observed in loess however it was not possible to distinguish between loess horizons on the basis of their clay minerals. Allogenic clays are presumed to consitute most of the loess, these are obviously of illite and kaolinite. Minor authigenic kaolinite is also present. Study of grain orientation in loess deposits gains two source paleowind directions, the central Otago and eastern Otago continental shelf. This interpretation accord with heavy mineral's provenance. Mineralogically the loess deposits are usually homogeneous, with angular monocrystalline quartz predominant. Feldspar consists mainly of plagioclase whilst potassium feldspar was found in minor quantity. Heavy minerals in loess are distinctive from other sediments (e.g. Hillgrove Fm, Recent sediments), phyllosilicate heavy minerals are in high percentages. In beach studies, grain slze analysis and dispersal pattern of some heavy minerals suggest longshore transport of beach material in a northwards direction. Furthermore it also noticed that the Shag River supplies considerable amounts of beach material to the Shag Point beaches, more obvious in phyllosilicate heavy minerals. Department The department where the student is studying primarily. Geology Thesis description Number of pages, maps, CDs, etc. 245 p. : illl. (some col.) ; 30 cm. Named locality Named locality describing the field area location. Shag Point Oamaru 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 Studies of late quaternary sediments Shag Point and South Oamaru coastal areas, South Island, New Zealand. Subject The topic of the resource Micropaleontology Quaternary geology Sedimentology Creator An entity primarily responsible for making the resource Situmorang, Mangatas. Date A point or period of time associated with an event in the lifecycle of the resource 1981 Identifier An unambiguous reference to the resource within a given context 1981Situmorang allogenic clay clay Hillgrove Formation quartz https://theses.otagogeology.org.nz/files/original/9412452d7853be3c9b7f7db9d5ecea16.pdf 849601d711c08df160664c194fdb1528 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 ((170.49208587144679 -45.875505277967079,170.708448802772551 -45.754309756642918,170.757785817279682 -45.77958032861909,170.555098806497938 -45.900209980862101,170.49208587144679 -45.875505277967079)) Author last name Last name of the Author Shears Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? MSc Advisers Who supervised/advised this student Smith, A. Gorman, A.R. Abstract The Abstract for this thesis Urban tidal inlets often lend themselves to economically important port development. In many cases, such inlets are artificially deepened and maintained for continuous human use. A range of ecological, hydrological, sedimentological and financial impacts can result from such manipulation. A good understanding of a sedimentary system provided by a comprehensive sediment budget allows informed decisions and planning and encourages sustainable coastal management. The aim of this research was to develop, for the first time, a sediment budget for Otago Harbour, on the southeast coast of New Zealand. Otago Harbour is a highly modified tidal inlet that occupies two river-incised (and/or fault-incised) volcanic valleys. Previous research has investigated many sediment inputs and outputs for Otago Harbour but there is a lack of research relating to sediment storage, thickness and sedimentation rate. This thesis assesses sediment thickness throughout Otago Harbour using three complementary methods: (1) a geometric bedrock model, (2) land-based gravity anomaly profiling, and (3) marine seismic reflection surveying. The geometric model, developed from topography and bore records using a maximum bedrock depth of 120 m (sea level at the last glacial maximum), estimated a maximum sediment volume in Otago Harbour of almost 5 billion m3 . Land gravity surveys (at Aramoana, Upper Harbour Basin and St Kilda/St Clair) and marine seismic reflection surveys refined this estimate to 1.62 billion m3 . Gravity modelling found the maximum sediment thickness to be -100 m at the modem harbour entrance and > 70 m at the St Kilda paleo-river mouth, whereas the seismic survey found the greatest basement depth ( -76 m) just inside the entrance at Harington Point. Taken together, these findings suggest that the sediment package accumulated at a rate of -90,000 m3/y since the last glacial maximum (equivalent to -2 mm/y). However, this rate of storage no longer occurs because of the current dredging regime. In the present sediment budget, sediment entering the harbour on the flood tide (619,000 m3/y) is the dominant sediment input to the system (626,000 m3/y), though most of it exits the harbour on the ebb tide (516,000 m3/y). The difference is more than compensated for by seafloor dredging, which removes more sediment than the net 111 amount entering the harbour (-28,000 m3/y), thus removing stored sediment. As a result, the harbour's sedimentary system is in deficit, and the deficit is likely to increase in the future if dredging continues at the same long-term rate (244,000 m3/y). Otago Harbour can no longer be deemed an "infilling harbour"; human intervention has overturned that natural balance. Instead, the system's deficit may explain recent erosion at Te Rauone Beach. Furthermore, the lack of carbonate sediment accumulation, due also to changes in early seafloor processes, means that Otago Harbour plays a reduced role in preservation of carbonate information and sequestering of atmospheric C02. Human activities in other urban tidal inlets may have caused similar deficits. As modelled for Otago Harbour, the next century promises to bring a great deal of change (climate, ocean chemistry, urban development) with unexpected consequences for urban tidal inlets. Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. Otago Harbour Thesis description Number of pages, maps, CDs, etc. xvi. 170 p. ill (some col) maps folded in pocket. 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 2010Shears Creator An entity primarily responsible for making the resource Shears, Amy Date A point or period of time associated with an event in the lifecycle of the resource 2010 Title A name given to the resource Characterisation of the sediment budget of Otago Harbour: a geophysical and sedimentological study Subject The topic of the resource Geophysics sedimentology geophysics modified tidal inlet sediment budget sedimentology. https://theses.otagogeology.org.nz/files/original/90b80904f42e95ee8c2bb6e621242176.pdf e8cb9c66cf47dcb3e4b95fe99f6c3e8b 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 ((167.790581266789701 -45.142539454861115,167.784902128490643 -45.189914685798385,167.704277034220468 -45.187623313151136,167.607989274395408 -45.137375066755084,167.617109768558436 -45.069211732443677,167.680825167103734 -45.070776709802033,167.790581266789701 -45.142539454861115)) Author last name Last name of the Author Zink Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? PhD Advisers Who supervised/advised this student Landis, C.A. Norris, R.J. Abstract The Abstract for this thesis After spreading ceased in the Tasman Sea in the Late Cretaceous, reorganisation of the Pacific-Australia plate boundary within the New Zealand region saw the development of several sedimentary basins during an extensional phase in the Middle Eocene to Oligocene. The Te Anau Basin was one of these basins. During this period, it opened adjacent to the eastern margin of Fiordland, a crystalline basement complex of Paleozoic to Cretaceous age, and is the main subject of this thesis. A detailed study of sedimentary facies occurring within the up to 7000 m thick basin-fill identified a vast range of lithofacies. Depositional environments represented include alluvial fans and braided and meandering rivers feeding deltas along the margins of the basin. Estuarine conditions are indicated by a diagnostic mollusc fauna. Shallow marine facies include an extensive limestone shelf represented by the Tunnel Burn Formation. A whole series of submarine fans such as the upper Sandfly Formation or the Turret Peaks Formation formed in deeper marine settings. These fans can be observed grading into a hemipelagic background mudstone mapped as Waicoe Formation. Faults controlling the Te Anau Basin are rarely exposed, but a comparison of sediment sequences allows reconstruction of kinematics, preferred orientation and timing of several fault systems. A NNE striking system, parallel to the basin axis and including the faults controlling the overall halfgraben geometry of the basin, directly reflects the regional tectonic setting. Pre-existing sets of NE and NW trending faults, cutting through Fiordland in straight lines, influenced sedimentation along the western basin margin where they cut it at high angles and produce distinct depocenters. Paleogeographic reconstruction of SW New Zealand shows the Te Anau and Waiau basins as separate entities throughout much of their history. The Te Anau Basin is shown here to have opened from the south as a north-south trending halfgraben, defining the eastern boundary of Fiordland. It is inferred to have been separated from the Waiau Basin to the east by an elongated basement high, which was subsequently destroyed during Pliocene to Recent compression. A northward connection of the Te Anau Basin with the West Coast Basins as proposed by several previous authors seems unlikely. The overall tectonic regime in which the Te Anau Basin developed is well constrained from seafloor data. This allows the sedimentary record of basin evolution to be compared directly to an independent plate tectonic model. The "tectonic signal" is isolated from the sedimentary record of the basin and compared with global models for extensional and strike-slip basins. Aspects of both are recognised, compatible with the transtensional origin indicated from plate tectonics. Changing tectonics towards strike-slip and finally transpression are also recognised within the sedimentary record. A possible modern analogue is the Gulf of California. However, basins opening at the head of the Gulf at present are strike-slip dominated. Only the southern Gulf underwent an early, rifting phase, followed by subsequent transtension. Basins related to this early rifting, like the Loreto Basin, are seen as the closest analogues to the Te Anau Basin. OURArchive handle The handle from the Otago University Research Archive (OURArchive) <a href="http://hdl.handle.net/10523/3552">http://hdl.handle.net/10523/3552</a> OURArchvive access level Abstract Only Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. Te Anau (Western Southland) Thesis description Number of pages, maps, CDs, etc. 1 v. (various paging) : ill. (some col.), maps (some col., some folded) ; 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 2000Zink Creator An entity primarily responsible for making the resource Zink, Christoph, 1968- Date A point or period of time associated with an event in the lifecycle of the resource 2000 Title A name given to the resource Middle Eocene to middle Miocene evolution of the Te Anau basin, western Southland, New Zealand Subject The topic of the resource Cenozoic Geophysics Sedimentology Tectonics basin evolution sedimentological history Te Anau tectonics https://theses.otagogeology.org.nz/files/original/2d7e2e254b1187ad319b1c5e5ac4518c.pdf 959a4898301884eedb256eab673118d8 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 Thomas Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? MSc Advisers Who supervised/advised this student Landis, C.A. Reay, A. Abstract The Abstract for this thesis The Holocene stratigraphy of the Blueskin Bay estuary was investigated using percussion cores. The Blueskin Bay estuary Holocene sequence comprises eight lithofacies arranged into a central estuarine basin consisting of an exposed intertidal flat, a sheltered intertidal flat and two estuarine bay head deltas. The exposed and sheltered intertidal flats are occupied by marine-influenced to paralic sand accumulations consisting of transgressive to highstand open-bay/estuarine deposits. The estuarine bay head deltas are dominated by tidalfluvial highstand point-bar and channel-lag deposits. Radiocarbon ages from in-situ and reworked shell and organics are used to establish the chronology of the Holocene stratigraphy. Holocene marine deposition commenced during the post-glacial transgression (ea. 9-7ka) and was dominated by an open-bay depositional environment in the position of the present central estuarine basin. At the time of the maximum transgression (ea. 6.2 ka) the majority of the Holocene estuarine sediment was in place. Hightsand deposition has been characterised by a period of erosion within the central estuarine basin and the episodic accretion and progradation of the estuarine bay-head deltas and around the bay margins. A database of 18 radiocarbon dates from estuarine sediments of the Blueskin Bay estuary, of which 8 are unpublished, is presented in this study. The elevation data have been reduced to a common datum (Mean Sea Level, MSL) and the sources of error assessed. Using modern lithological and biological relationships relative to present sea-level, radiocarbon dates can be converted into paleosea-level indicators. The upper and lower limits of the paleosea-level dataset provide an envelope representing local relative sea-levels. The envelope is consistent with a culmination of the post-glacial transgression after 6.5 ka BP, followed by a minor regression of -1.4 m from 5.5-5 ka BP, followed by a minor transgression of+ 1.4 m between 5-3.2 ka BP. Twelve radiocarbon dates from estuarine sediments of the Papanui and Hoopers Inlets located on the Otago Peninsula, corrected to a common datum (MSL), are used to constrain a relative sea-level curve and provide a proxy for the relative sea-level curve of the Blueskin Bay estuary. The paleosea-level dataset for the Papanui and Hoopers Inlets indicates a stillstand of +0.2m occurred at ~6 ka BP, followed by a minor regression of -0.7 m between 6 and 3.8 ka BP, followed by a minor transgression of +0.5 m from 3.8 to 3 ka BP. As with the newly proposed Blueskin Bay estuary relative sea-level curve, the last 3 ka BP of the sea-level curve for the Papanui and Hoopers Inlets has been stable. Newly proposed relative and eustatic sea level curves for the Blueskin Bay estuary, Papanui and Hoopers Inlets provide additional reference localities for New Zealand Holocene regional sea-level studies. All available data from the Holocene sediments infilling the estuary of Blueskin Bay and the Papanui and Hoopers Inlets suggest there has been no tectonic uplift or subsidence of the East Otago coast or Otago Peninsula during the mid to late Holocene. The large core and radiocarbon database from the Blueskin Bay estuary allowed an analysis and interpretation of the systems tracts and parasequences developed during the late Holocene. Within this interpreted sequence stratigraphy, the transgressive systems tract (TST) corresponds to the sequence boundary between the basal Holocene/Pliestocene superimposed by a ravinement surface and/or marine erosion surface (MES-1 ). The maximum flooding horizon (MFH), peak eustatic sea-level horizon (PESH), and/or peak relative sea-level horizon (PRSH), defined as isochrons equivalent to the maximum transgression of the shoreline and peak eustatic or relative sea level [within a cycle] respectively (after Larcombe & Carter, 1998), are not necessarily marked by a physical surface/sedimentary boundary within the Blueskin Bay estuary. The majority of the Holocene sediments deposited within the Blueskin Bay estuary correspond to the highstand systems tract (HST) of the post-glacial sea-level cycle. A geochemical study of the Blueskin Bay estuary sediments reveals distinct provenance signatures and some evidence for trace metal contamination proximal to possible pollution point sources. OURArchive handle The handle from the Otago University Research Archive (OURArchive) <a href="http://hdl.handle.net/10523/3245">http://hdl.handle.net/10523/3245</a> OURArchvive access level Abstract Only Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. Blueskin Bay (East Otago) Thesis description Number of pages, maps, CDs, etc. 2 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 2000Thomas Creator An entity primarily responsible for making the resource Thomas, David Gregory, 1975- Date A point or period of time associated with an event in the lifecycle of the resource 2000 Title A name given to the resource Holocene stratigraphy and sequence architecture of the Blueskin Bay estuary, East Otago Subject The topic of the resource Quaternary Geology Marine Geology Sedimentology Blueskin Bay Estuary Holocene sequence stratigraphy https://theses.otagogeology.org.nz/files/original/760a98fb5df248f77b7f473d90be996f.pdf d2bc6ff55ea2571d3060f496d2c4a649 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 Rust 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 Over twenty significant specimens of Late Oligocene- earliest Miocene bony fish (teleost) have been recovered from North Otago and South Canterbury, South Island, New Zealand. The fossils, studied herein, semi-complete skeletons, rather than isolated bone fragments or otoliths. Most of these fossils were prepared manually and using pneumatic tools. These fossils are described and identified as belonging to at least six families of acanthomorph fishes which have not previously been described formally from the New Zealand fossil record. Previously Davis (1888) and Chapman (1918, 1934) described some Cenozoic marine teleosts from New Zealand. Since then fish remains have occasionally been mentioned in the literature, mostly incidental to other works (see Fordyce, 1991). Since 1980, major advances in fossil teleost research in New Zealand have included comprehensive studies of otoliths (e.g Schwarzans, 1984), and the description of a few Cenozoic fresh water galaxiids (McDowall, 1976; McDowall & Pole, 1997) and Cretaceous marine fish (Wiffen, 1989). Some notable Cenozoic marine teleost skeletal specimens have been collected since the 1930's but were not recorded or studied in detail until this work. The Oligocene - Miocene fossil fish reported here come mainly from the Kokoamu Greensand and Otekaike Limestone, which represent the local Duntroonian and Waitakian Stages. These strata include the Globigerina euapertura and Globoquadrina dehiscens planktic foraminiferal zones of Jenkins (1971), equivalent to Late Miocene and earliest Miocene .. The limestone and greensand yield other fossils, including a rich invertebrate macrofauna, penguins, chondrichthyans and cetaceans (e. g. MacKinnon et al. 1993; Beu & Maxwell, 1990; Fordyce, 1991), and have been dated using foraminiferal biostratigraphy (e. g. Hornibrook et al., 1989). The accounts herein of the litho- and biostratigraphy of these units is based mainly on existing work, supplemented by my observations. The remains of a large and relatively complete bony fish (teleost) recovered from Oligocene limestone at Island Cliff, near Tokarahi, North Otago, are described. This fossil (OU 22268) probably represents a new genus of lampridiform related to the extant moonfish or opah (Lampris). OU 22268 is the only known specimen of this genus, and is the first fossil lampridiform recorded from the Southern Hemisphere. It is by far the largest fossil teleost found in New Zealand, and is one of the most complete. OU 22268 resembles Lampris having over 40 vertebrae and a Lampris-like caudal skeleton with a five hypurals, but differs in possessing a larger and more elongate body (estimated total length >4 m). A comparative study of the living southern moonfish Lampris immaculatus helped assess relationships of OU 22268. The specimen was also analysed using a cladistic framework based on Olney et al. (1993). The ii systematics and fossil record of the lampridiform fishes is reviewed, with particular attention on the deep-bodied ("bathysomus") forms: the Lamprididae and Veliferidae. Other Oligocene teleosts described herein are relatives of the swordfish (Xiphidae) and marlin (Istiophoridae ), including the now-extinct families Paleorhynchidae and Xiphiorhynchidae. These fossil billfish are mostly disarticulated vertebrae and caudal elements that cannot be identified beyond family level, although two specimens of the large paleorhynchid Pseudotetrapturus include significant skull material. One -4 m long Pseudotetrapturus specimen (OU 22396) was collected during this project from Haughs Quarry, Hakataramea, South Canterbury, and was prepared by the author. It has a distinctive long, narrow and sharply pointed lower jaw. The ventral' part of. the cranium of this specimen shows large orbits. A second smaller specimen (OU 22317) may represent a juvenile Pseudotetrapturus. All of the fossil billfish are described for the first time from New Zealand, and are among the first to be recorded from the .Southern Hemisphere. Relatives of the billfish, Acanthocybium and Gymnosarda-like "Spanish mackerals" of the family Scombridae are represented by two fossil.hypural plates from North Otago. Cod-like I (gadiform) fishes were also present during the Oligocene, with one disarticulated specimen described but not identifiable to family level. These finds hint at the diverseichthyofauna that existed in shelf waters around New Zealand during the mid-Cenozoic. The fossils are ·important in a global context as few south Pacific fossil fish skeletons are known from this interval. None of the fossils show structures that reveal distinctive particular lifestyles for the species involved, so the paleoecology of the fish is determined using taxonomic uniformitarianism - it is assumed they functioned in a similar way to their living counterparts. Thus most of the fossil fish identified so far· were pelagic predators. The billfish, presumably had thermal preferences like their living counterparts. Their presence as fossils in Otago and Canterbury supports the hypothesis of a relatively warm shallow sea covering much of New Zealand during the Oligocene. Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. southern New Zealand Thesis description Number of pages, maps, CDs, etc. ix, 148 leaves, 20 leaves of plates : ill. ; 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 2000Rust Creator An entity primarily responsible for making the resource Rust, Seabourne, 1975- Date A point or period of time associated with an event in the lifecycle of the resource 2000 Title A name given to the resource Fossil bony fish (Teleostei) from Oligocene-Miocene marine sediments on southern New Zealand Subject The topic of the resource Paleontology Cenozoic Sedimentology fossil bony fish marine sediments Miocene Oligocene Teleostei https://theses.otagogeology.org.nz/files/original/e2506d57411853c0e0c28e2c461072c1.pdf 6e870cb96804827f927c3f880a9ece92 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 ((170.842601909000109 -44.746626814999956,170.844162850000089 -44.751917281999965,170.832646045000047 -44.752654465999967,170.823978299000032 -44.753204914999969,170.807655300000079 -44.754241800999978,170.738624251000033 -44.758600232999981,170.726681963000033 -44.758404882999969,170.688668816000018 -44.757507110999939,170.689072377000116 -44.748759974999984,170.701748799000029 -44.748951211999952,170.702526184000021 -44.730812618999948,170.714834919000054 -44.731103314999984,170.715208004000033 -44.722468069999934,170.728046021000068 -44.722740725999984,170.738960745000099 -44.722785719999933,170.748205876000043 -44.713903039999934,170.753682231000084 -44.708638358999963,170.761115542000084 -44.70149338799996,170.763673633000053 -44.701524339999935,170.829411027000106 -44.702326254999946,170.829552935000038 -44.702328887999954,170.831973643000083 -44.71054781,170.842450091000046 -44.746110897999984,170.842601909000109 -44.746626814999956)) Author last name Last name of the Author Middlemiss Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? MSc Advisers Who supervised/advised this student Lee, D.E. Abstract The Abstract for this thesis Towards the east, the Waihaorunga valley (South Canterbury) is underlain and fault bound by greywacke and argillite flysch sequences of the Torlesse Terrane (Torlesse). Towards the Carnpbell Hills in the west, outcrops of massive weathered greywacke predominate. The greywacke can be classified following Bishop's textural zone groups as TZI with minor TZII. Mineralogically, the Torlesse belongs to the actinolite - pumpellyite facies. Red siliceous argillites, and conglomerates containing granite clasts are found as cobbles and boulders in streams draining the Campbell Hills in the vicinity of Hursts Road, and are derived from Ford's (1994) field of study. Quartz:feldspar:lithics plots constructed to estimate the likely age of the Torlesse in this area following MacKinnon (1983) corresponded with MacKinnon's lower Upper Triassic Q:F:L ratios. In the central southern section of the valley (i.e. - south of Waihaorunga Back Road) the Torlesse exhibits pre-Tertiary steep folding and in places is overturned. The base of the Tertiary sedimentary sequence forms an angular unconformity with the underlying Torlesse. The Taratu Formation consisting of carbonaceous grey clay and lignite outcrops at Quambys Bridge (J40/GR409048) and in the south of the field area at (I40/GR273036). The Taratu is approximately lOm thick. Unconformably overlying this is the Kauru Formation considered by Maxwell (1999) to be Waipawan - ?Heretaungan in age. The thickness of the Kauru is poorly constrained, but is thought to be up to 30m(+) thick. The Kauru can be divided into 7 categories based on field observations. Upstream from Quarnbys Bridge (J40/GR408045), a band of Kauru outcrops as an Asterocyclina rich, limonitic sediment containing clasts of quartz and greywacke ("Asterocyclina limestone" member) overlain by sub-horizontal, brown Kauru sands ("friable glauconitic quartz sands" member). Limonitic quartzose blocks resting on the erosional surface of the Torlesse in the central part of the field area are lag deposits of Gage's Raupo Concretionary Sandstone Member. Maxwell classified horizons of greensands, glauconitic quartz sands, with shell beds, and concretions at J40/GR378075 as Kauru Formation ("brown carbonaceous quartz sands, greensands and jarositic siltstone" member). Fossil record form (J40/f 211) for this locality gives an upper Bortonian or Kaiatan age. Here, the Kauru is dipping -50"E towards the South Branch of the Waihao River fault (SBWRf) and the dip decreases westward along this outcrop to sub-horizontal bedding. Outcropping above an angular unconforrnity (J40/GR319055) is the "carbonaceous sands and silt" member. The base of the Kauru exposed immediately upstream of the back bridge to Pentland Hills station at J40/GR359112 consists of several horizons of fossiliferous conglomerates (containing greywacke) and sands ("fossiliferous quartz conglomerate" member). The top section of the Kauru is exposed in the stream bed at J40/GR355114 where sub-horizontal, fossiliferous dark grey/blue sands (Five Forks Glauconitic Sand member) are overlain by clean quartz sands of the Opawa Sandstone (the shallow water lateral equivalent of the Bortonian Waihao Greensand). The Opawa Sandstone is -60m thick, and is defined as clean, friable, micaceous quartz sands (plus rare glauconite) with fossiliferous concretions often containing rounded quartz pebbles. The sands are often massive, but also exhibit horizontal bedding and cross bedding. In Waihaorunga valley the Waihao Greensand and Opawa Sandstone seem to grade into each other and are not easily distinguishable, therefore they are considered as one formation here. Resting on the Waihao Greensand/Opawa Sandstone is the Otiake Group (comprising the Kokoamu Greensand and Otekaike Limestone). The Kokoamu Greensand is a richly fossiliferous, glauconitic sand (<5m thick) which grades up into the Otekaike Limestone (seen at J40/GR347103). Lack of exposure restricts accurate thickness estimations, however sinkholes and springs are used to estimate the upper and lower limits where there is no outcrop. The Otekaike Limestone is estimated to be approximately 55m thick. This limestone is a fossiliferous, bioturbated, karst and commonly glauconitic unit. In outcrop it is massive to bedded, and poorly to well cemented. At Bell's Quarry (I40/GR292044) rare mang~nese is found in association with the limestone. The macro fossil assemblage suggests an age range from Dhntroonian to Waitakian. The Mount Harris Formation overlies the Otekaike Limestone at J40/GR333087. Macro fossils from this new fossil locality suggest an Altonian age. In the Waihaorunga valley the Mt Harris Formation varies from a silty marl - (Waitoura Marl Member- at J40/GR333087), to an infaulted massive silty sand at J40/GR377084 (siltstone member). The forarninifera collected from the siltstone member suggest a Waitakian age (or younger). It is likely that this -10m thick silty sand also belongs to the Mt Harris Formation. A blue/grey fossiliferous sand unit of unconstrained thickness outcrops in a fault bound depression at J40/GR376047. Maxwell (1999) has classified this as the Southburn Sand, and fossils indicate an Altonian age. Quaternary gravels and loess form a veneer over much of the Waihaorunga valley. At Quambys Bridge, the gravels are up to approximately 4m thick. Gravels (a few metres thick) can be found on the upthrown side of the SBWR fault. On the downthrown side of the SBWR fault the gravels are up to -lOm thick at J40/GR374093, where they unconformably overlie the Waihao Greensand/Opawa Sandstone. There are numerous fluvial terraces (especially in the north-east of the field area) where the river has cut down through its own deposits and underlying lithology (Waihao Greensand/Opawa Sandstone). In the southern part of the SBWR terraces expose Torlesse, Kauru Formation, and Waihao Greensand/Opawa Sandstone. A veneer of loose Torlesse cobbles and boulders are found on the sloping limestone and sandstone hills of the west, while river deposits were observed in at least one valley draining the Campbell Hills. Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. Waihaorunga Valley Thesis description Number of pages, maps, CDs, etc. x, 133 leaves : col. ill. (some folded), maps (some col., some folded) ; 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 1999Middlemiss Creator An entity primarily responsible for making the resource Middlemiss, Sasha, 1974- Date A point or period of time associated with an event in the lifecycle of the resource 1999 Title A name given to the resource Geology of the Waihaorunga Valley, South Canterbury Subject The topic of the resource Lithostratigraphy Structural geology Sedimentology Geology South Canterbury https://theses.otagogeology.org.nz/files/original/e9b0a06053e6294a160b4abad0c8dba9.pdf cce394a689c53c28aec609f6e427b0be 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 ((169.74489821639952 -46.033782700301579,169.657971508603964 -45.927319143786093,169.424764290524678 -45.91989527551047,169.433624002631973 -45.837580823681222,169.435190363778247 -45.770946238166516,169.583100522547767 -45.778566865628299,169.581464683087376 -45.835317682977085,169.771643343905538 -45.902417347313374,169.859477104906347 -46.014177408168649,169.872643170602089 -46.035257488378171,169.74489821639952 -46.033782700301579)) Author last name Last name of the Author Walrond Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? MSc Advisers Who supervised/advised this student Sibson, R. Abstract The Abstract for this thesis The Tuapeka Fault Zone (TFZ) is a complex NW-SE zone of brittle deformation, extending from Waitahtu1a Gully to Beaumont, in southern Otago. Good exposures of individual faults occur within this zone, the best being at Gabriel's Gully Historic Reserve, and at Waitahuna Gully. Spectacular fault planes, exposed by the removal of the hanging wall Blue Spur Conglomerates (BSC) (late Cretaceous) during former mining operations can be seen at these two localities. The fault plane exposed at Gabriel's Gully (Gabriel's Gully No 1 Fault) extends down-dip for up to 200m, along a strike length of 400m. TI1is offers excellent exposure of a variety of brittle fault rocks. The fault core is dominantly composed of an extremely fine grained "brown ultracataclasite" unit, 20 cm thick with minor intercalated clay rich (green ultracataclasite) and carbonate cemented ultracataclasites (white ultracataclasite). In the footwall adjacent to this ultracataclasite "pavement", is a damaged zone (approx. Sm thick) comprising variably deformed and chloritically altered schists, calcite cemented fault breccias, derived from the schist and minor cataclasites. Surprisingly little deformation has occurred in ilie hanging wall BSC which shows no evidence for significant cataclasis, although numerous faults sub-parallel to the fault plane do occur within it. Porphyroclast mineralogy of t~e ultracataclasites (quartz-albite-epidote-titanite) largely mirrors that of the adjacent protolith1 which comprises Caples Terrane basement schists of pumpellyiteactinolite facies. These make up both the footwall and hanging wall lithologies, with additional minor BSC occurring in the hanging wall. In addition, several secondary minerals, useful for temperature estimation, occur in the fault rocks. These are interpreted to have been formed both by direct fluid introduction (calcite, quartz, chalcedony, stilbite, pyrite) and by alteration reactions of protolith minerals (smectite derived from albite alteration), in a low temperature ( <100"C), fault related hydrothermal system. Secondary minerals occur as veins (calcite, stilbite, pyrite, chalcedony) as well as within the matrix of the fault rocks (smectite, pyrite), attesting to significant levels of fluid flow. Microstructural shear sense indicators within the ultracataclasites indicate that the fault has experienced two separate phases of movement, an earlier normal dip-slip phase (late Cretaceous), followed more recently by a reverse dip-slip phase (Tertiary). Slickensides are rare, but occasional frictional wear striae on the ultracataclasite surface, as well as distributed shears with quartz fibre growths in the footwall schists, suggest predominantly dip-slip motion. Microscopic shear sense indicators are best developed in clay rich lensoidal domains (green ultracataclasites) which occur within the more common quartzofeldspathic brown ultracataclasites. The most reliable of these indicators are arrays of R1 Riedel shears with associated oblique P-foliations, similar to structures commonly observed in clay gouge shearing experiments. Additional microstucturnl shear sense indicators include fault parallel Y-shears, rotated porphyroclasts and vein microfaults. Outcrop scale field evidence from around the study area also suggests that the TFZ has experienced reversal. The Blue Spur Conglomerate makes up the hanging wall lithology at several localities (Gabriel's Gully, Waitahuna Gully, Wetherstones, Forsyth), strongly suggesting that the fault was ex tensional during the deposition of the conglomerates (late Cretaceous). Conjugate normal faults at Big Hill provide further evidence for extensional faulting. Field evidence for the reverse phase of movement is common. At Wetherstones, a well exposed NE dipping reverse fault has emplaced basement schists over ilie BSC. In addition, spectacularly developed tight macroscopic folds with steeply dipping axial planes occur at Wetherstones dump. These strongly suggest a compressional regime. At Gabriel's Gully Historic Reserve the BSC dips into the fault plane at an angle of 30". This is interpreted to b.e a drag effect resulting from reverse faulting. Mesoscopic kink folds, developed in the chlorite altered schists of the·Gabriel's Gully No 1 Fault, also suggest compression, as do patterns of calcite veining. The BSC (late Cretaceous) consists mainly of quartz-greywacke-schist conglomerates in a silly, smectite-rich, blue-green matrix which oxidises to a brown colour upon weathering. Subordinate horizons of sands, silts and coal horizons also occur. The deposit is interpreted to have been deposited by a major river system operating in late Cretaceous times. Paleocurrent data indicates a source from ilie SW, which is consistent with clast provenance. An additional minor source from the NE is also inferred. Occurrences of BSC are typically found preserved only in fault angle depressions of the TFZ, but the deposit was presumably once far more extensive. The BSC is auriferous and was the subject of intensive gold mining operations last century. Gold samples obtained from the deposit display spectacular evidence for secondary precipitation, and are closely associated with pyrite and smectite. Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. Otago Thesis description Number of pages, maps, CDs, etc. v, 197 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 1996Walrond Creator An entity primarily responsible for making the resource Walrond, Mark Tapio, 1970- Date A point or period of time associated with an event in the lifecycle of the resource 1996 Title A name given to the resource Tuapeka fault zone : brittle faulting and sedimentation, Otago, New Zealand Subject The topic of the resource Structural geology Sedimentology Gabriels Gully gold Laurence structure https://theses.otagogeology.org.nz/files/original/cec601ea4128e73c0d2a56216c7b8123.pdf 670b64fa7165ea0da8ba7167b01831f9 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 ((167.355196512451954 -46.192325694983921,167.27027890815117 -46.187729948141836,167.282522347534098 -46.124394426805857,167.39508333509383 -46.078541446879093,167.517450904824813 -46.086995831322568,167.510213940033992 -46.154526774556508,167.477245631204624 -46.150075756869967,167.442022257282588 -46.14764872576491,167.415209077298613 -46.148481332413823,167.400236975368273 -46.154177271467368,167.398531336750096 -46.165883102954204,167.394850286672551 -46.176777235117925,167.384840770985647 -46.184144221616577,167.372194286617855 -46.187092973562699,167.354721192812463 -46.191944884123025,167.355196512451954 -46.192325694983921)) Author last name Last name of the Author McMurtrie 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 This thesis describes the Eocene to Recent sedimentary sequence of the East Hump area, in the southern Waiau Basin, Western Southland. Cenozoic sedimentation in the East Hump area began in the Late Eocene with the deposition of terrestrial conglomerates and marginal marine sandstone of the Hump Ridge Formation. The Hump Ridge Formation is conformably overlain by deeper marine sandstone/mudstone interbeds of the Hauroko Formation and mudstone of the Waicoe Formation. This Eocene to Miocene sequence is unconformably overlain by the Late Miocene inner shelf conglomerate, sandstone and limestone of the Port Craig Formation, which in turn grades into the outer to mid shelf Late Miocene to Pliocene Te Waewae Formation. The following stratigraphic advances have been made: the boundary between the Hump Ridge Formation and Hauroko Formation is defined; the Hauroko Formation is divided into two members, the sandstone-dominated Breakneck Member, and the mudstone-dominated Hauroko Member; the boundary between the Port Craig Formation and Te Waewae Formation is redefined; the Port Craig Formation is correlated throughout using the lithofacies and biofacies concepts; and a new member (the Waikoau Member) of the Te Waewae Formation is proposed. These lithostratigraphic advances combined with chronostratigraphic data allow new interpretations of two areas of Te Waewae Bay coastal sediments. A chronostratigraphic map produced from foraminiferal and molluscan dating shows an Eocene to Early Miocene (Runangan to Altonian) sequence of Hump Ridge Formation, Hauroko Formation, and Waicoe Formation which youngs and thins to the south. The Port Craig Formation, which unconformably overlies these · sediments, was previously thought to be Tongaporutuan at the base, but foraminiferal dating now interprets it as Kapitean throughout. Dates from above and below the Miocene unconformity suggest it has a maximum duration of 17 million years (part of the Altonian Stage, Southland Series, and Tongaporutuan Stage). The time gap between these units increases to the south to 24 million years at J amiesons Creek, coinciding with decreasing thickness of the Waicoe Formation. The Miocene/Pliocene boundary (Kapitean/Opoitian) probably coincides with Ethological change from the Waikoau Member to the Deadwood Member in the Te Waewae Formation. A diverse macrofauna from the sandstone of the Kapitean Port Craig Formation allows biofacies correlation of outcrops in streams several kilometres apart. In contrast, the gastropod-dominated assemblages of the mudstone of the Te Waewae Formation are more uniform and include taxa which are of more chronostratigraphic ). t IV value. Fossils from both the Port Craig Formation and the Te Waewae Formatio,n are used to interpret paleoenvironment. Petrographic study of conglomerate, sandstone, and heavy minerals from the Hump Ridge, Hauroko and Port Craig formations indicate that Fiordland and cannibalised underlying sediments were the major sources of detritus. Provenance areas are narrowed using petrography, heavy minerals, previous published paleogeographic maps, and paleocurrents. Rhyolite and dacite from the Oligocene Hauroko Formation has been traced to a potential source of the Eastern Fiordland Volcanics around present Lake Te Anau. Similar clasts in the Port Craig Formation are probably reworked from the underlying Hauroko Formation as the East Hump area was surrounded by sediment sinks in the Late Miocene. Heavy minerals indicate the Brook Street terrane was a source of sediment in the Late Eocene and Early Miocene, and Southwest Fiordland was a possible source in the Late Eocene to Early Oligocene. Paleoenvironments of the sediments of the East Hump area are consistent with regional structural trends. The terrestrial to marginal marine Hump Ridge Formation (Runangan), the submarine fan complex of the Hauroko Formation (Whaingaroan), and the bathyal mudstone of the Waicoe Formation (Whaingaroan to Altonian) were deposited during the Eocene to Oligocene; thought to be a phase of oblique extension. The Miocene unconformity probably marks Middle to Late Miocene compression which caused uplift of Hump Ridge resulting in folding, faulting, and erosion of the sedimentary sequence. Back-arc subsidence allowed deposition of the shoreface to inner shelf Port Craig Formation (Kapitean) and the outer shelf Waikoau Member of the overlying Te Waewae Formation (Kapitean). Uplift in the Pliocene is reflected in shallowing to the mid shelf Deadwood Member of the Te Waewae Formation. This uplift continues to the present day, reflected by a flight of preserved Quaternary marine terraces. Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. Te Waewae Bay Southland Thesis description Number of pages, maps, CDs, etc. xiv, 262 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 1996McMurtrie Creator An entity primarily responsible for making the resource McMurtrie, Grant Bevan. Date A point or period of time associated with an event in the lifecycle of the resource 1996 Title A name given to the resource Cenozoic sediments of the East Hump area, Te Waewae Bay, Southland Subject The topic of the resource Cenozoic geology Sedimentology basin history Foraminifera Miocene Mollusca paleoenvironment