1 10 79 https://theses.otagogeology.org.nz/files/original/cb415b4e04dc7b55ec0be0dff2f2ad38.pdf 40ecf34e4d47158df9f78bd8774e544b 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 (((168.128762756000015 -45.445013474999939,168.136474164000106 -45.445177920999981,168.136203292000118 -45.449912723999944,168.128558336000083 -45.449863744999959,168.128762756000015 -45.445013474999939)),((168.31874959400011 -45.584306023999943,168.318571869000039 -45.584479169999952,168.307062447000021 -45.578077973999939,168.314048833000015 -45.573802110999964,168.324087937000058 -45.579102791999958,168.31874959400011 -45.584306023999943)),((168.220570622000082 -45.597638189999941,168.224847063000084 -45.594725823999966,168.241322174000061 -45.602622261999954,168.237757056000078 -45.606564711999965,168.220570622000082 -45.597638189999941))) Author last name Last name of the Author Pillai Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? MSc Advisers Who supervised/advised this student Landis, C.A. Abstract The Abstract for this thesis Mid Permian Upukerora Formation, predominantly a coarse clastic unit, lies at the base of the Maitai Group in western Otago and northern Southland. It is characterized by polymict volcanogenic breccias and conglomerates and also contains, sandstones, siltstones and atomodesmatinid limestone. The formation lies in depositional contact on the Early Permian Dun Mountain 'ophiolite and represents a transition from dominantly volcanic to dominantly sedimentary processes. Upukerora Formation stratigraphy is documented in detail in a belt extending 120 km along the Dun Mountain ophiolite belt from the Bryneira Range in the north to the Gyzeh in the southeast. The thickness of the formation varies widely from less than 40 m in the Bryneira Range to 750 m in East Eglinton. Distinctive red and green polymict breccia and conglomerate beds typify the formation. Fine grained spilitic clasts dominate over all other breccia clast lithologies. Other clast types are locally abundant, e.g. siltstone clasts at the Gyzeh, plagioclase phyric basaltic-andesite clasts in the area between Bald Hill and the East Eglinton and purple keratophyre clasts at Serpentine Saddle. A new unit, the Heu siltstone member, composed of thin bedded sandstone and mud stone couplets, is informally proposed and described from the top of the Upukerora Formation in the Annear Creek-East Eglinton area. Interbedded fossiliferous strata and hyaloclastite indicate a submarine origin for the formation. Clast rounding is weakly developed suggesting an origin below wave base. Tabular shaped breccia beds lie parallel to interbedded packets of thinly bedded sandstone and mudstone turbidites suggesting that these sediments are redeposited and not primarily talus deposits below submarine scarps. The predominance of clast supported breccia and conglomerate beds and generally low proportion of mud argues against a matrix rich debris flow origin. Alternatively breccias may have been transported by a type of marine hyper-concentrated flood flow. New provenance data from modal sandstone compositions, sandstone geochemistry, breccia clast petrography and geochemistry and detrital grain mineralogy indicate derivation from mafic igneous rocks of the underlying ophiolite along with some intermediate-silicic input from a volcanic arc. In addition, basaltic-andesite to andesitic rocks of the underlying upper part of the Livingstone Subgroup (uppermost unit of the Dun Mountain ophiolite) are documented, and an arc related origin is proposed. Synthesis of these data and recently available data from other sources suggests deposition of the Upukerora Formation and at least part of the underlying Dun Mountain ophiolite in a back-arc environment. Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. Otago western Southland northern Thesis description Number of pages, maps, CDs, etc. vii. 147 p. ill. (some colour), 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 1989Pillai Creator An entity primarily responsible for making the resource Pillai, DDL Date A point or period of time associated with an event in the lifecycle of the resource 1989 Title A name given to the resource Upukerora Formation, Maitai Group, in western Otago and northern Southland Subject The topic of the resource Sedimentology Dun Mountain Ophiolite Belt Eglinton River Maitai Group Tramway Sandstone Upukerora Formation Upukerora River Wooded Peak Limestone https://theses.otagogeology.org.nz/files/original/3feec6be748a17a2da61dacdb110e973.pdf dd62066903371828768a41c4df4cd315 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 ((171.011464167962515 -43.631639864562665,171.076894604479492 -43.631687696364381,171.096524685303621 -43.648811356709118,171.086423250277619 -43.687949911794107,171.00371709886673 -43.657590553397071,171.011464167962515 -43.631639864562665)) Author last name Last name of the Author van Dusschoten Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? MSc Advisers Who supervised/advised this student Fordyce, R.E. Landis, C.A. Abstract The Abstract for this thesis Balmacaan Stream, Harper Range, central South Island, New Zealand is the first known Etalian (early Middle Triassic) locality in the Torlesse Supergroup. This study involved mapping of Torlesse rocks here, and collection of fossils for biostratigraphic, paleoecological and paleobiogeographical analysis. The Mt Taylor Group encompasses all Triassic-aged Torlesse Supergroup strata between the Rangitata and Rakaia Rivers. This area includes the Harper Range, which previously had been mapped as Balmacaan Formation - one of three Middle Triassic formations in the Mt Taylor Group. 50 field days spent reconnaissance mapping, measuring sections and collecting fossils, revealed three distinct sequences of strata on the northern slopes of Mt Harper, and southern tributaries to Balmacaan Stream. One sequence represents the previously described Balmacaan Formation which is amended, while the other two sequences represent the Mahaanui and Lake View Formations (both new). All are characteristically quartzofeldspathic. The Lake View Formation (basal) is dominated by thick-bedded flysch, consisting of alternating light grey sandstone and rarely fossiliferous (flora-bearing) dark grey siltstone. It also includes a conspicuous conglomerate lens near its top, and rare red and green siltstone. Graded beds indicate that the formation is overturned. Its base is unknown, while its top is disrupted by faulting, but this unit is essentially in conformable contact with overlying Balmacaan Formation, thus hinting at a Lower or pre-Etalian age. The overlying Balmacaan Formation (amended) consists of over 700 m of fossiliferous fine sandstone and siltstone, and subordinate medium and pebbly sandstone. Graded bedding and pressure expulsion structures indicate that the formation is south-dipping and northyounging (overturned), consistent with the underlying Lake View Formation. Marine macroinvertebrates (including ~13 cephalopod species) and woody plant remains occur at six or more levels throughout the formation. Defining the unit's base is a pebbly shellbed, containing abundant specimens of the bivalve Trigonia balmae (J36/f99). This bivalve, along with the molluscs Mellarium nodulosum, Parapopanoceras fraseri and Daonella jadii, are species characteristic of the Etalian Stage (New Zealand timescale), which correlates to the Anisian Stage (early Middle Triassic) on the global timescale. The Mahaanui Formation (?uppermost) constitutes over 500 m of thin-bedded flysch overlain by thick sheets of conglomerate interbedded with subordinate but conspicuous plant-bearing carbonaceous horizons. Above the folded basal strata, bedding dips and youngs steeply southeast. Vascular plant fossils are comparable to Permian forms from South Africa, but identifications are tentative, so a Permian age is not confirmed. The Mahaanui Formation is faulted against the Balmacaan Formation and possibly also against the Lake View Formation. Thus, stratigraphic relationships are unknown. If the Mahaanui Formation was considered to be uppermost, and involved in a near-continuous sequence, a broad shallowing trend would be evident, with Lake View Formation being distal, Balmacaan Formation middle and Mahaanui Formation proximal. 67 macroinvertebrates and one vertebrate are described, occurring at eight stratigraphic levels in the Balmacaan Formation. 55 are molluscs, of which 33 are bivalves, while 22 species of the total fauna are lmown only from float. The fauna is dominated by epifaunal suspension feeders, while free-swimming carnivores are also common. One fossil locality, J36/f94, possibly represents a life assemblage, with crinoids and brachiopod species apparently in life position, and is compositionally indistinguishable from an Etalian life assemblage in the Wairaki Hills (D44/f044). Direct comparison of the Balmacaan fauna and Etalian faunas of the Murihiku Supergroup (particularly the Wairaki Hills) has shown marked quantifiable similarity at species- and genuslevel. 33 out of 55 Balmacaan species and 33 out of 48 genera also occur in the Murihiku Supergroup, giving Simpson coefficient values of 0.60 and 0.69 respectively. Cephalopod and brachiopod faunas are particularly similar, giving species-level Simpson values of 0.88 and 0.81 respectively. These faunal-similarity numbers indicate physical closeness, and thus strong marine connections between the Torlesse and Murihiku depositional environments in the Middle Triassic, and throw doubt on previous ideas about Murihiku end Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. Balmacaan Stream (mid Canterbury) Thesis description Number of pages, maps, CDs, etc. xi, 180 p, ill. , diagm, map (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 2000van-Dusschoten Creator An entity primarily responsible for making the resource van Dusschoten, A 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 Torlesse stratigraphy and paleontology, Balmacaan Stream, mid Canterbury Subject The topic of the resource Paleontology Lithostratigraphy fossils mid Canterbury stratigraphy Torlesse https://theses.otagogeology.org.nz/files/original/e4a0dea3bd65426147608a887c296804.pdf f56c94fb02c3d40dba26e6568f421050 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 ((171.044311836751405 -44.116279021172488,171.088587346195197 -44.117266834042972,171.103378618880583 -44.161343771946399,171.039864816155216 -44.160747704552463,171.02722374613748 -44.172678591188038,171.003738861770557 -44.172270471483905,171.005543466451428 -44.158009582896362,171.044311836751405 -44.116279021172488)) Author last name Last name of the Author Hitching Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? BSc(Hons) Advisers Who supervised/advised this student Landis, C.A. Abstract The Abstract for this thesis Argillitic metasiltstone, metagreywacke, conglomerate, chert, metavolcanics and marble comprise the Torlesse rocks at Kakahu. These rocks are situated forty kilometres north west of Timaru, cover an outcrop area of twenty five square kilometres, are overlain unconformably by Tertiary sediments to the south and east, and are separated from Tertiary rocks to the north and west by the Rapuwai fault. Metasiltstone and metagreywacke comprise approximately 60% and 30% of the Torlesse rocks of Kakahu respectively. These rocks belong to textural zone 2B, except for those on the far west of the field area, which are 2A. Pumpellyite is abundant in all metasiltstones and metagreywackes. Prehnite is common in the 2A rocks but occurs only spasmodically in those of textural grade 2B. Point counting indicates that the Kakahu metagreywackes are quartzofeldspathic and are broadly typical of Torlesse metagreywackes. The only sedimentary structure seen in these rocks is laminated, often graded, bedding. Conglomerate is uncommon and was found at only three localities. Pebbles are predominantly well rounded intrabasinal Torlesse-type siltstones, but rare chert, granophyre, and rhyolite pebbles were also found. Fourteen occurrences of chert are recorded, and these may be subdivided as follows: i) Bedded, coloured cherts up to 160 m thick. These cherts are bedded on a scale of 2- 50 cm, and grading and alternations with thin laminae of chloritic slate occur at several localities. These features suggest that these cherts are probably siliceous turbidites. A relict radiolarian texture is observed in some thin sections. ii) Non bedded, grey or yellow grey cherts from l m to approximately 20 m in thickness. iii) Red and pink cherts intercalated with hematitic metavolcanics and white marble in the lower Kakahu River gorge. Two lithologies of intercalated metavolcanics and marble crop out in the lower Kakahu River gorge. The westernmost lithology is a 140 m thick sequence of sixteen bedded units of tuffaceous greenschist, grey marble and metasiltstone. The second lithology which lies directly to the east of the former is 90.m thickness of intercalated poorly schistose hematitic metavolcanics·and pure white marble. In places the white marble is present as irregular lensoidal masses within the metavolcanics - these were probably originally masses of calcareous sediment which infiltrated into primary voids between submarine pillows. The Kakahu Marble is a 30 m thick, pure grey marble which has yielded a fauna of Pennsylvanian conodonts. Conodonts of the same age have also been obtained from the grey marble which is interbedded with tuffaceous greenschist and metasiltstone in the lower Kakahu River gorge. No other identifiable fossils were found in the Torlesse rocks of Kakahu. Three phases of folding are recognised. F1 folds are tight mesoscopic folds which are preserved only in the bedded cherts and interbedded metavolcanic and marble rocks. Macroscopic F2 folding was accompanied by the formation of the regional schistosity (S 2). S2 was macroscopically folded during F3 deformation. The resistant marker lithologies (i.e. cherts, intercalated metavolcanics and marbles, the Kakahu Marble) are traceable along strike for up to 500 m; their boundaries appear to have been tectonically sheared off. Evidence of transposition and shearing is ubiquitous in the metasiltstones and metagreywackes, and the rocks comprise a tectonic melange in the sense of Cowan (1974). Some marker lithologies have boundaries with metasiltstone that are parallel to sand laminae observed in the metasiltstone. As the only two fossil localities at Kakahu, which are 1 kilometre apart, are Pennsylvanian in age, and as one of these fossil localities is interbedded with typical Kakahu metasiltstone, it is likely that all the Torlesse rocks of Kakahu are likewise of Pennsylvanian age. Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. Kakahu Thesis description Number of pages, maps, CDs, etc. 93 leaves : illus. (part. col.) map (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 1977Hitching Creator An entity primarily responsible for making the resource Hitching, Keith David. Date A point or period of time associated with an event in the lifecycle of the resource 1977 Title A name given to the resource Torlesse geology of Kakahu, South Canterbury, New Zealand. Subject The topic of the resource Map Sedimentary petrology Structural geology chert marble Rapuwai Fault Torlesse Supergroup https://theses.otagogeology.org.nz/files/original/ee854b399ceb6db1c39339f760dc8c13.pdf 44d56f755196102688cd9b593c3ece69 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 Schmitt Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? MSc Advisers Who supervised/advised this student Landis, C.A. Bishop, D.G. Abstract The Abstract for this thesis Investigation of the straigraphy and depositional history of the Maorl Bottom Formation, a late Miocene- early Pliocene (Tk- Wo) fluvial gravel, has proven useful in reconstructing the tectonic history and paleogeography of the Maniototo basin. The Maori Bottom Formation consists of crudely stratified massive greywacke and schist gravel interbedded with massive silt. The formation is deeply weathered to a rusty buff color and well indurated, often standing as vertical cliffs. The deposltional environment is interpreted to be a sandur-type alluvial plain developed in the northeastern Maniototo adjacent to the newly formed Kakanui and lda Ranges alpine terrain. Facies distribution and provenance of the Maorl Bottom Group indicate at least two distinct phases in the tectonic development of the basin since the late Miocene. The influence and interaction of tectonics and climate on sedimentation in the Maniototo basin since the late Mlocene can be inferred from the stratigraphic record preserved within it. Coupled with a consideration of the regional paleoclimate the Maori Bottom Formation has implications for late Miocene-early Pliocene glaciation in New Zealand. Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. Maniototo Basin Thesis description Number of pages, maps, CDs, etc. vi. 64 p. ill. 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 1984Schmitt Creator An entity primarily responsible for making the resource Schmitt, KR Date A point or period of time associated with an event in the lifecycle of the resource 1984 Title A name given to the resource The stratigraphy and depositional environment of the Maori Bottom Formation in the Maniototo Basin, Central Otago. Subject The topic of the resource Cenozoic Lithostratigraphy Quaternary geology Sedimentology Tectonics conglomerate sedimentation fluvial models Maori Bottom Formation paleoclimate https://theses.otagogeology.org.nz/files/original/bba76ca30ef7b663a8e7e96fa7bb4fec.pdf 7f618f7a1f23e0308d15b8917c7a9d1d 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 ((176.513234272000091 -38.08917897799995,176.513910247000013 -38.102293092999957,176.482356245000119 -38.103389237999977,176.457366 -38.10425128299994,176.426762204000056 -38.105299664999961,176.421085538000057 -38.105493243999945,176.419937227000105 -38.105532368999945,176.419854298000018 -38.105534593999948,176.376223146000029 -38.106697426999972,176.358338700000104 -38.107169359999943,176.357327470000087 -38.107195962999981,176.354524398000081 -38.107269656999961,176.313489911000033 -38.108340765999969,176.312765327000079 -38.094783494999945,176.312760751000042 -38.094697843999938,176.312322513000026 -38.085888227999931,176.312202057000036 -38.083466373999954,176.310298073000013 -38.045162111999957,176.309426741000038 -38.027618091999955,176.3091906410001 -38.022862683999961,176.337155568000071 -38.022076092999953,176.352657084000043 -38.021637178999981,176.416882288000124 -38.019796732999964,176.417120290000071 -38.019789371999934,176.458204373000058 -38.018511423999939,176.459401779000018 -38.018473960999984,176.465725453000118 -38.018275906999975,176.466752130000032 -38.0182437199999,176.472138079000047 -38.01807471799998,176.481064636000042 -38.017794067999944,176.509798530000126 -38.016886020999948,176.511051869000084 -38.043276556999956,176.511836183000014 -38.059780418999935,176.512414048000096 -38.071934769999984,176.513171291000049 -38.087855218999948,176.513234272000091 -38.08917897799995)) Author last name Last name of the Author Beanland Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? BSc(Hons) Advisers Who supervised/advised this student Landis, C.A. Abstract The Abstract for this thesis The Rotokawau eruption occurred approximately 13 kilometres northeast of Rotorua about 4000 years ago, and produced two overlapping tephra rings of pyroclastic deposits. The western vent is now occupied by Lake Rotokawau, while a chain of aligned and coalesced craters 2l kilometres east of Lake Rotokawau mark the vents for the eastern activity. The pyroclastic deposits are documented and described; they comprise airfall, base surge and ballistic ejecta of essential and lithic material, 0.7 km 3 in volume. Eruption style of the western vent, a maar type volcano, was surtseyan, or phreatomagmatic. Deposits are widely dispersed over 70 square kilometres. A maximum thickness on the crater rim of nearly ten metres decreases to one metre four kilometres from source. Proximal base surge deposits are present on the lake shore, dipping towards the centre of the crater. These are irregular beds up to one metre thick of hard and very poorly sorted block and ash material. All other exposures are made up of many thin (l-10 cm) layers of alternating base surge (type A: (distal) fine, ashy, poorly sorted and coherent tephra) and airfall (type B: loose-,c fJ:Table, well sorted tephra) deposits. Grain size analysis provided a distinction between type A and type B deposits based on size and sorting parameters. Grain size characteristics of Rotokawau samples are presented. Activity from the eastern vents was both surtseyan and strombolian in style, reflecting lesser interaction between magma and water .. Deposits around these craters are more cone-shaped, maximum thickness is about 20 metres. Tephra is generally coarser than that of western deposits, with a lesser amount of lithic component. Particle morphology reveals a contrast between dense, blocky fragments of phreatomagmatic origin, and light, highly vesiculated scoriaceous fragments which reflect the greater degree of importance of magmatic gas release in the franentation of the magma. Both morphologies are found in eastern samples, only phreatomagmatic fragments are present in western samples. Essential, or juvenile, material is high alumina basalt derived from partial melting of anOsubsequent segregation from the mantle at depths of 30-35 km. Geochemical data are presented and these indicate a temperature of crystallisation (and eruption) of ll50°C. Parameters of magnitude are calculated for the eruption. Rates of emission were about 6.4 m3/s at initial velocities of about 150 m/s. Column heights are inferred to have averaged 4.5 km and reached a maximum of 10 km. The Rotokawau eruption occurred from the Otataina centre of the Taupo Volcanic Zone. Although this volcano is unlikely to re-erupt it can be seen as representative of an eruption style of this volcanically active zone. An eruption sequence of Rotokawau type would be extremely violent near source, characterised by frequent base surges, and would deposit perhaps a metre of tephra up to 4 km from the vent. OURArchive handle The handle from the Otago University Research Archive (OURArchive) <a href="http://hdl.handle.net/10523/2703">http://hdl.handle.net/10523/2703</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. Rotokawau Thesis description Number of pages, maps, CDs, etc. 169 p. : ill. (some col.), maps ; 31 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 1981Beanland Creator An entity primarily responsible for making the resource Beanland, Sarah. Date A point or period of time associated with an event in the lifecycle of the resource 1981 Title A name given to the resource The Rotokawau eruption. Subject The topic of the resource Map Geochemistry Igneous petrology Volcanology basalt tephra 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 Jillett Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? MSc Advisers Who supervised/advised this student Landis, C.a. Coombs, D.S. Abstract The Abstract for this thesis The Kawau Sandstone is defined as a member of the Wangaloa Formation. The two well penetrations of this unit show it to be a moderately to well sorted, subangular, medium sand, subfeldsarenite to lithic feldsarenite in the .HoiholC well, and a moderately to poorly sorted, subangular, medium to coarse sand, sublitharenite to litharenite in the Kawau-lA well. The main compositional differences are diagenetic in origin and include the absence of feldspar and higher clay content in the Kawau-lA well. The examination of detrital mode analysis and statistical quartz provenancediscrimination has found that caution is required in their use. Where detrital grains have undergone significant alteration, detrital mode analysis should be avoided. Any provenance determinations based on the polycrystallinity and undulatory nature of detrital quartz should be treated with caution. Other provenance indicators including inclusions in quartz, quartz grain size, lithic types, potassium feldspar compositions, the presence of twinned plagioclase and muscovite compositions suggest that the Kawau Sandstone is derived primarily from a granitic source with additional minor input from local sediments and metasediments. The most probable granitic source is also the Great South Basin basement rock. The diagenetic sequence of the Kawau Sandstone in the Hoiho-lC well is inferred to be: framboidal pyrite - feldspar dissolution - partial alteration of muscovite to illite/kaolinite intergrowths - kaolinite precipitation, with a maximum temperature of 70°C at present. The diagenetic sequence in KawaulA is inferred to be: framboidal pyrite - siderite precipitation - feldspar and siderite dissolution· :. partial alteration of muscovite to illite/kaolinite intergrowths - kaolinite precipitation-hydrocarbon emplacement - kaolinite precipitation - authigenic quartz precipitation - illitization of kaolinite - euhedral pyrite, with a maximum temperature of 120°C at present. The large number of substituted ions in the composition of early diagenetic siderite in the Kawau-lA well suggests that the Kawau Sandstone here is marine in origin. The presence of a significant gas accumulation in the generally low porosity Kawau Sandstone of the Kawau-lA well suggests that reservoirs of apparently poor quality may still represent good hydrocarbon prospects. Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. Great South Basin Thesis description Number of pages, maps, CDs, etc. 116 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 1993Jillett Creator An entity primarily responsible for making the resource Jillett, David N. (David Nicholas), 1968- Date A point or period of time associated with an event in the lifecycle of the resource 1993 Title A name given to the resource The Kawau sandstone of the Great South basin Subject The topic of the resource Sedimentary petrology Great South Basin Kawau petrology snadstone https://theses.otagogeology.org.nz/files/original/a1c2ed96e7d281fd6ff64965f69be44c.pdf f60a9e56ab381bba15b70fc528d74a50 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 ((170.35543526779756 -45.919208938013341,170.355991241699257 -45.918243813558419,170.043981150781633 -45.912974297864054,170.045906476208415 -45.876706468024409,170.155660845794472 -45.880684196189222,170.157206154206165 -45.8336882422076,170.324064488563806 -45.835339268666829,170.326961365178789 -45.794634603837238,170.42562221251103 -45.796599896038025,170.419987119380636 -45.921138229147672,170.35543526779756 -45.919208938013341)) Author last name Last name of the Author Chadwick Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? MSc Advisers Who supervised/advised this student Landis, C.A. Abstract The Abstract for this thesis The Henley Breccia is a Middle to Late Cretaceous alluvial conglomerate that rests unconformably on the Otago schist. At the base it is characterised by clast supported pebble conglomerates interbedded wi!h sandstones and siltstones. A general 'upfan' and north westerly increase in clast size and angularity is recognised along with a decrease in the proportion of matrix, number of sandstone I siltstone interbeds, channel structures and degree of sorting. The upper beds are essentially massive and often characterised by a small number of exceptionally large boulders (> lm diameter). The Henley is here subdivided into seven lithofacies including four varieties of conglomerate. The conglomerates are defined mainly on the basis of clast size and internal structure. The seven lithofacies are grouped into four associations representative ofa range ) · I I / of debris flow and stream flood deposits. The whole sequence ranges from 900 ~o )40?0m in thickness and has a consistent 15-25" W to NW dip. \ . The conglomerate clast fraction is dominated by psammitic greywacke and semi-schist (approx 80-85%) with subordinate quantities (5-10%) of higher grade (textural zone >2b) schist, argillite ( approx 5 %) and quartz ( approX: 5%). The proportion of higher grade schist increases northwards. The low grade greywacke clasts contain between 5-20% quartz, 10-15% feldspar and 70-80% rock fragments. The rock fragments are dominantly volcanic (60-70%) with a subordinate but strong meta-sedimentary component (30-40%). Sedimentological, including paleocurrent data indicate that the Henley was deposited by streams and debris flows travelling west to east. The predominantly coarse, angular nature of the clast fraction points towards a relatively proximal source. Th~-age of the Henley is poorly constrained. From pollen dates the base is thought to be / I between! SO and 94Ma (i.e. late TS or early PMl zone) roughly corresponding to R~u17inara Series. The a~e of the top is only constrained by the unconformably overl~ing T~atti Formation which is of latest Cretaceous (Haumurian) agy_~-) Studies of clay minerals from the Henley indicates that the majority of the clay is detrital in origin with some minor authigenic smectite, chlorite-smectite and illite. Small quantities of calcium carbonate cement containing traces of manganese and iron are also present. The calcite is typically pore filling with a variety of irregular, although predominantly equant, crystal shapes. The Henley Breccia accumulated in a fault angle depression formed in response to rapid i\ downthrow along the southeastern side of the Titrrfaplt. Movement along the fault was initiated in response to Middle Cretaceous extension and the Henley beds are interpreted to have experienced syn-depositional rotation in response to continued listric normal movement on the Titri and Akatore faults. Following peneplanation, deposition of the Taratu and of an overlying marine transgressive sequense, a late Middle Miocene change in !" . plate vectors caused reversal of movement on the Titri fa~lt resulting in further rotation and j consequent steepening of the Henley Beds. Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. East Otago 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 1995Chadwick Creator An entity primarily responsible for making the resource Chadwick, Peter Vinton. 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 The Henley breccia Subject The topic of the resource Sedimentology east Otago Henley formation https://theses.otagogeology.org.nz/files/original/48bcea4e8a681b173987a7bb22b0fea9.pdf cf6f2bcca398b74ad580cf2509d15e3c 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 ((168.119659543000012 -44.939279575999933,168.119527070000117 -44.940937253999948,168.067110221000121 -44.939093817999947,168.061880999000095 -44.938901906999945,168.061910163000107 -44.938632691999942,168.062106685000117 -44.936838016999957,168.062831060000121 -44.930161535999957,168.06608299200002 -44.925179793999973,168.072297500000104 -44.915654509999968,168.085080416000096 -44.896054763999985,168.093130446000032 -44.883703814999933,168.095969731000082 -44.879343938999966,168.124377071000026 -44.880687299999977,168.120627166000077 -44.92726734799993,168.119659543000012 -44.939279575999933)) Author last name Last name of the Author Williams Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? BSc(Hons) Advisers Who supervised/advised this student Landis, C.A. Abstract The Abstract for this thesis The area round Cascade Creek from the Livingstone Fault to the Te Anau - Milford road has been mapped. Previous work on the Permian sequence in Otago - Southland and Nelson is examined in some detail. Group names applied to the rock formations of the area are; Humboldt, Brook Street and Maitai. Reasons for this nomenclature are given in Appendix 1. A section of the Eglinton Volcanics along Cascade Creek is described, lithologies present include quartz keratophyre, andesite and volcanogenic sediments. An infaulted sliver of Murihiku Supergroup may be represented by one outcrop in the creek. The north end of the southern section of the Livingstone Volcanics occurs one mile south of Cascade Creek. These rocks are briefly described and classified as epidiorites. The Red Mountain Ultramafics consist of sheared serpentinite, blocky serpentinite and tectonic inclusions. X-ray analysis of the sheared serpentinite suggests that all three serpentine polymorphs are present, viz., antigorite, crysotile and lizardite. Two types of tectonic inclusions are recognised, those with dioritic composition, and those metasomatised to rodingite. X-ray analysis of hydrogrossular from five rodingites suggests a low degree of hydration and a formation temperature (630 - 750°C) outside the stability field of serpentine - assumed to be 500°C. Chlorite from inclusion margins is moderately aluminous and rich in magnesium relative to iron. It is not known whether the ultramafics were laid down before the Livingstone Volcanics or subsequently intruded along the Livingstone Fault. The steeply dipping sediments exposed between the Eglinton and Livingstone Volcanics are referred to as the Maitai Group. Volcanic breccias, sandstones and argillites underlying the Howden Limestone, and previously included in the Livingstone Volcanics, are placed in the newly defined Cascade Formation. The type section is situated half a mile south of the triple forks in Cascade Creek. Atomodesma - bearing Annear Sandstone overlies the Howden Limestone and is overlain by the massive, unfossiliferous, well sorted Key Summit Sandstone. Most of the Maitai sediment is volcanically derived. Alkali analyses of the two volcanic suites show a higher K20:Na20 ratio in the Eglinton Volcanics. These results are considered to support Challis' theory that the two belts were genetically distinct. The Key Summit Syncline axis is mapped as a faulted axis along the contact separating the Annear and Key Summit Formations The Livingstone and Hollyford Faults are steeply dipping features approximately one mile apart east of Lake Gunn. The strike directions of two other near vertical faults make an angle of approximately 30° with the Livingstone Fault. They may be part of a conjugate set between the Livingstone and Hollyford faults. Active, or very recent scarps near the top of, and parallel to ridge crests, may be the result of gravitational adjustment in mountains whose slopes have been oversteepened by ice movement. All rocks in the area have undergone regional metamorphism. The Maitai sediments contain lawsonite without prehnite and are classified as lawsonite- albite facies. The Eglinton Volcanics are assigned to the prehnite - pumpellyite facies, and the Livingstone Volcanics to the higher grade pumpellyite-actinolite schist facies. A brief geological history is given. The width of Maitai sediments exposed in Cascade Creek is probably the narrowest anywhere along the marginal syncline, and this area may have the greatest depth of erosion in the syncline. Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. Cascade Creek Eglinton Valley Thesis description Number of pages, maps, CDs, etc. vi. 69 p. ill, photos, map (folded in pocket); 27 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 1969Williams Creator An entity primarily responsible for making the resource Williams, JG Date A point or period of time associated with an event in the lifecycle of the resource 1969 Title A name given to the resource The Geology of Cascade Creek, Eglinton Valley. Subject The topic of the resource Map Igneous petrology Sedimentary petrology Paleozoic Atomodesma Cascade Formation serpentinite https://theses.otagogeology.org.nz/files/original/6cbffea4c0be26526ea68dfcbf6acbd9.pdf 9a4d68f3f11b8c087f6b1852098d423b 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 ((168.670765733120959 -45.985012971000984,168.665948752760329 -46.029127473233316,168.609722735229553 -46.026739208491129,168.613902816132281 -45.982602472553701,168.670765733120959 -45.985012971000984)) Author last name Last name of the Author Kirk Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? BSc(Hons) Advisers Who supervised/advised this student Campbell, J.D. Landis, C.A. Abstract The Abstract for this thesis A measured section through the Taringatura Group in the upper Otamita Valley is presented. The units recognised in the section have formed the basis of mapping in the areas north-west and south-east of the section. The area is affected by the North Peak Flexure, and mapping confirms that the internal radius of this fold has been shortened by the northward displacement of wedge shaped blocks, with dimensions in the order of kilometres. The Taringatura Group represents a mainly regressive sequence, with the lower part of the section dominated by deep-water turbidites, interbedded with ash, debris-flow and bottom-current deposits. Higher in the sequence shallow water deposits predominate, including some with storm-generated sedimentary structure. The depositional model proposed is that of the progradation of shelf and slope facies over a gently plunging trough axis. Two disconformities interrupt the sequence and each may represent uplift and subaerial erosion. New Zealand mid-upper Triassic series and stages are recognised. Parts of the section may be subdivided on lithological grounds and, in addition to recognizing existing rock units, three new lithologic zones are proposed: the Mervyn Peake Flysch Zone, the Overton Silstone(Zone) and the Caroline Tuff Zone. Of these only the latter is of regional extent. Clast composition varies from andesitic, with minor granitoid, at the base of the Taringatura Group, to rhyolitic-dacitic with abundant granite, and finally at the top of the group, a return to andesitic. Detrital quartz and alkali feldspars, rare throughout most of the section become abundant in upper Warepan and Otapirian strata. Petrography and the abundance of air-fall ashes suggests that the site of deposition was a basin associated with and receiving detritus from an area of active arc volcanism. Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. Otamita Stream Thesis description Number of pages, maps, CDs, etc. 162 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 1982Kirk Creator An entity primarily responsible for making the resource Kirk, Philip Alastair. Date A point or period of time associated with an event in the lifecycle of the resource 1982 Title A name given to the resource Taringatura group in the Overton's Road section, Upper Otamita stream, Southland Subject The topic of the resource Map Sedimentary petrology Structural geology Mesozoic Taringatura Group Triassic https://theses.otagogeology.org.nz/files/original/944b440680601315b9fdd3e6c50cbb48.pdf 4a15c35ab2759c13ab5fb3d3579e0638 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 ((170.428746754662313 -44.842294723752573,171.119558137669628 -44.853204961981376,171.109598765110547 -45.156715010878827,170.865931306430184 -45.146465864218058,170.869255284259197 -45.057213242496026,170.424035849035192 -44.891610974549195,170.428746754662313 -44.842294723752573)) Author last name Last name of the Author Aitchison Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? BSc(Hons) Advisers Who supervised/advised this student Landis, C.A. Abstract The Abstract for this thesis The Taratu Formation sediments, as seen in north east Otago are described. The name Taratu is previously unused in this area but should apply to all the lithologically and stratigraphically equivalent non-marine quartzose conglomerates of (at last) the Otago area. Thirteen depositional facies are recognised with their interpretation being that of either fluvial or littoral origin. Textural study allows the description of five textural facies based on grain-size analysis. One textural facies dominates that of sandy gravel, and typical exposures contain a predominance of coarse over fine-grained sediments. Scanning Electron Microscopy allows the recognition of two end member quartz types (milky and clear quartz) with a gradation between. Authigenic precipitation of kaolinite and quartz is also seen. A macroflora from Livingstone is described and the discovery of the only fossil insect (an impression of a beetle larvae) at present known in the New Zealand fossil record is reported. The Taratu Formation is of possibly significant economic importance being a large scale low grade placer gold deposit. Coal is also found in localised lenses. Facies model interpretation of the Taratu Formation, in the light of existing outcrop, is that of a pediplainlike deposit which formed with deposition in braided rivers which flowed on top of a peneplain surface of deeply chemically weathered Haast Schist. Analogy with contemporary savanna areas is made. The age of the Taratu Formation in north east Otago ranges from late Cretaceous to Eocene. Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. Wainakarua Duntroon Thesis description Number of pages, maps, CDs, etc. 178 p. : ill., maps (one fold.) ; 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 1981Aitchison Creator An entity primarily responsible for making the resource Aitchison, J. C. (Jonathan Clement) Date A point or period of time associated with an event in the lifecycle of the resource 1981 Title A name given to the resource Taratu formation in North east Otago. Subject The topic of the resource Map Sedimentology Mineralogy Paleobotany paleohydrology Taratu Formation