1 10 8 https://theses.otagogeology.org.nz/files/original/c8122ac95331b2bedcd88163976c7415.pdf dc8934c1ab73d099baa47beb8bc8cdfa 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 ((172.29277217379618 -42.059412438243626,172.290627751644621 -42.022224672831719,172.45682957846401 -42.020271904891452,172.459986571827102 -42.250956519757139,172.291865490327581 -42.255760681111717,172.29277217379618 -42.059412438243626)) Author last name Last name of the Author Sagar Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? PhD Advisers Who supervised/advised this student Palin, J.M. Toy, V.G. Abstract The Abstract for this thesis Distinctive basement gneisses of the Glenroy Complex and granitoids of the Mt. Cann Pluton and McKnee Intrusives are exposed in the Alpine Fault footwall, southeast Nelson, New Zealand. These rocks comprise tectonic blocks that form a foreland thrust system that has developed adjacent to a major restraining bend (“Big Bend”) in the Alpine Fault. The age of the Big Bend and its influence on exhumation of the Australian Plate are poorly constrained. This thesis addresses this issue through integration of conventional thermobarometry, U-Pb geochronology, and 40Ar/39Ar and fission-track thermochronology. The Glenroy Complex was intruded between 127.9–121.6 Ma and metamorphism occurred at 120.6 ± 0.9 Ma. Emplacement of the McKnee Intrusives occurred in two discrete episodes at 224.8 ± 2.6 Ma and 137.8 ± 0.7 Ma. These ages, in combination with whole-rock geochemistry, suggest that the McKnee Intrusives, Glenroy Complex and Mt. Cann Pluton are correlatives of the calc-alkaline Darran Suite, HiSY Western Fiordland Orthogneiss (WFO), and HiSY Separation Point Granite, respectively. Thus, the McKnee Intrusives and Woodham Orthogneiss have been displaced ~500 km along the Alpine Fault, while the Mt. Cann Pluton is autochthonous basement over which the former units have been tectonically emplaced. Using the Woodham Orthogneiss and WFO as piercing points, a slip-rate of 22–25 mm/year is calculated for the Alpine Fault, which overlaps existing long- and short-term estimates. This suggests that the Alpine Fault slip-rate has been approximately consistent for ~23 Ma. Thermobarometry indicates that peak two-pyroxene granulite facies and retrograde metamorphism occurred at 880 ± 70 °C and 4.5 ± 1.5 kb, and 663 ± 33 °C and 2.2 ± 0.9 kb, respectively. These results, and the lack of high-pressure garnet granulite facies assemblages, indicate that the Glenroy Complex experienced a clockwise pressure-temperature path. This suggests the Woodham Orthogneiss may represent magmas emplaced at a higher structural level that loaded the WFO causing garnet granulite facies metamorphism. After partial exhumation during mid-Cretaceous continental extension, which preceded rifting of New Zealand from Pacific Gondwana, the Glenroy Complex remained at ~350 °C from ~100–80 Ma. During Late Cretaceous–Middle Eocene continental extension, the Glenroy Complex was dissected by normal faults, which initiated cooling below ~350 °C at 16–28 °C/Ma. Faults in the western Glenroy Complex were active earlier than those in the east. Consequently, the Woodham Orthogneiss experienced differential exhumation – western and eastern parts cooled from ~350–200 °C between ~80–70 Ma and ~50–45 Ma, respectively. After reaching ~200 °C, the temperature-time paths of the Glenroy Complex began to converge, because differential exhumation was no longer occurring, and cooling slowed to ~4 °C/Ma, which lead to surface exposure at ~15 Ma. The slow, consistent cooling rate suggests that the Big Bend had not yet formed. Development of the Big Bend during the Middle Miocene resulted in exhumation of the Alpine Fault hanging wall, which loaded the Australian Plate creating a foreland basin. Hence, shortly after reaching the surface, the Glenroy Complex was buried by ~3 km of sediments, which caused rapid (~44 °C/Ma) reheating to ~80 °C that lasted for ~4 Ma, causing partial annealing of apatite fission tracks. A need to accommodate shortening associated with the Big Bend resulted in the Glenroy Complex being thrust over the foreland basin eastern margin during the Late Miocene–Early Pliocene. OURArchive handle The handle from the Otago University Research Archive (OURArchive) <a href="http://hdl.handle.net/10523/4715">http://hdl.handle.net/10523/4715</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. southest Nelson Thesis description Number of pages, maps, CDs, etc. xxiv, 316 pages A4 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 2014Sagar Creator An entity primarily responsible for making the resource Sagar, Matthew William (Matt) Date A point or period of time associated with an event in the lifecycle of the resource 2014 Title A name given to the resource Geology, petrology and thermochronology of the Glenroy Complex and associated granitoids, southeast Nelson, New Zealand Subject The topic of the resource Igneous geology Metamorphic geology 40Ar/39Ar Alpine Fault Australian-Pacific plate boundary Big Bend Darran Suite exhumation Fission-track geochemistry Glenroy Complex gneiss Gondwana granite Granulites LA-ICP-MS metamorphism Nelson New Zealand Separation Point Suite thermobarometry thermochronology U-Pb zircon geochronology Western Fiordland Orthogneiss https://theses.otagogeology.org.nz/files/original/3fd3e653fa194e60f214e23e09645121.pdf 3ffcb5fbb7da3c715ae133bc2a7bfa2a 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 ((169.3180911742418 -43.73210903800846,169.290124979484119 -43.746091432269949,169.309962396454836 -43.75745378946845,169.227474544786617 -43.801802646015332,169.252764188169152 -43.818119124029174,169.187283456968345 -43.864781921187138,169.083980542637647 -43.795777792576835,169.234755267341967 -43.685917606908262,169.3180911742418 -43.73210903800846)) Author last name Last name of the Author Ryland Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? MSc Advisers Who supervised/advised this student Cooper, A.F. Palin, J.M. Abstract The Abstract for this thesis Situated ~20 km northeast of Haast in a remote part of South Westland, New Zealand, the ~65 km2 Bald Hill-Maori Saddle region had not been mapped in detail prior to this research. This study provides a detailed account of the Bald Hill-Maori Saddle region’s geology and shows that it is dominated by metasedimentary and igneous basement lithologies, but also comprises a minor component of the Cretaceous-Recent South Westland stratigraphic sequence. It is also shown that the Bald Hill-Maori Saddle region has a complex structural history, with evidence for at least two separate major episodes of tectonism: Cretaceous extension and Cenozoic transpression. Greenland Group metasediments are the dominant lithology exposed within the Bald Hill-Maori Saddle region and consist of a tightly-folded and indurated metaturbidite sequence composed of interbedded, quartz-dominated, immature poly-cyclic psammites and pelites that have been regionally metamorphosed to lower-greenschist facies. Due to emplacement of the Whakapohai Granite ± additional concealed plutons to within 2 km of the current level of exposure, much of the Greenland Group within the Bald Hill-Maori Saddle region has been contact metamorphosed to biotite ± andalusite ± cordierite hornfelses. At the southeastern extremity of the Bald Hill-Maori Saddle region, situated between the Alpine and Wrong Faults and juxtaposed against Greenland Group metasediments across an intensely mylonitized décollement zone, the newly defined Cattle Track Gneiss consists of a poorly-exposed, amphibolite facies, mylonitic paragneiss equivalent to the Greenland Group, which was uplifted from the mid-crust during formation of the Cretaceous aged Maori Saddle complex. Hosted within Greenland Group metasediments, the Maori Saddle Granite, the Whakapohai Granite, and lamprophyre dykes constitute igneous basement rocks in the Bald Hill-Maori Saddle region. Incorporated as part of the Karamea Granitoids, yet separate from the sub-suites, the 384 ± 3.5 Ma, weakly fractionated, calc-alkaline, peraluminous, S-type Maori Saddle Granite exposed at the southern extremity of the Bald Hill-Maori Saddle region, was generated at the obliquely-convergent paleo-Pacific margin of Gondwana in response to crustal thickening associated with the Tabberabbean Orogeny and is most likely affiliated with similar plutons in Eastern Tasmania, Australia. Exposed as a stock midway up the Whakapohai River and as several pegmatite dykes between the Diamond and Wrong Faults, the newly discovered, highly-fractionated, calc-alkaline, peraluminous, S-type Whakapohai Granite is geochemically comparable with Karamea Suite plutons of the Karamea Granitoids. Thus, like Karamea Suite plutons elsewhere in New Zealand, it too was likely generated in an extensional environment associated with slab-rollback/abandonment or a one-off delamination event at the obliquely-convergent paleo-Pacific margin of Gondwana, during Mid-Paleozoic time. Two sets of lamprophyre dykes crop out in the Bald Hill-Maori Saddle region: alkaline lamprophyres in the Maori Saddle area; and calc-alkaline lamprophyres near the Munro Mistake-Whakapohai River confluence and in Mistake Creek. Alkaline lamprophyre dykes are Mid- to Late-Cretaceous in age, crosscut all basement lithologies except an intensely mylonitized décollement zone, and are affiliated with swarms of alkaline lamprophyre dykes that intruded Western Province rocks elsewhere in New Zealand during Cretaceous region-wide extension. Calc-alkaline lamprophyre dykes in the Bald Hill-Maori Saddle region form a north-south trending en echelon array and have a strong subduction-related geochemical signature, which implies an emplacement age coincident with when the Bald Hill-Maori Saddle region was last affected by subduction: during the Mid-Paleozoic. Consequently, these lamprophyre dykes are separate from all other known lamprophyre dyke swarms in New Zealand. Capping the summit of Bald Hill, the lower-member of the Otumotu Formation, the oldest unit of the Cretaceous-Recent South Westland stratigraphic sequence, consists of a flat lying/gently dipping fanglomerate deposit dominated by locally-derived quartz and Greenland Group detritus. The Otumotu Formation is Early- to Late-Cretaceous in age and infills extensional half grabens that formed within the detached upper-plate of the Maori Saddle Complex. Additional exposures of units constituting the Cretaceous-Recent South Westland stratigraphic sequence consist of: an Arnott Basalt feeder dyke that crosscuts the Otumotu Formation near the summit of Bald Hill; an internally faulted fault slice comprising Tauperikaka Coal Measures; Tokakoriri Formation Porphyry Point Member, and Tititira Formation; internally structurally complex Tititira Formation and Tauperikaka Coal Measures that constitute part of the vertical limb of the Coastal Monocline; and a thin veneer and a series of terraces composed of Quaternary aged alluvium, colluvium, paleo-river/glacial outwash, shallow-marine, and glacial moraine/till deposits. In Cretaceous time, following the Rangitata Orogeny, the Bald Hill-Maori Saddle region underwent region-wide extension and the Maori Saddle Complex formed. The Maori Saddle Complex is an extensional complex with metamorphic core complex affinities, which, like similar complexes elsewhere in New Zealand, comprises a ductilely deformed, high-grade, lower-plate (Cattle Track Gneiss) that has been exhumed and juxtaposed against a brittlely deformed, low-grade, upper-plate (Greenland Group) as a consequence of mylonitic shearing along a low-angle décollement zone. Due to Cenozoic tectonism, the Maori Saddle Complex has since been overprinted with Cenozoic structures, which add complexity. Cenozoic tectonism associated with the Early-Miocene propagation of the Alpine Fault Australia-Pacific plate boundary through New Zealand and the Late-Miocene to present transpression across it, caused uplift of a 10-20 km wide belt of Western Province rocks between the Alpine Fault and a steeply dipping reverse fault in basement rocks beneath the present-day coastline. As a result, the overlying Cretaceous-Paleogene-Neogene sedimentary and volcanic deposits were folded into the Coastal Monocline; of which, the flat lying/gently dipping Otumotu Formation at the summit of Bald Hill forms the upper-limb and the steeply dipping deposits along the adjacent coastal section form the vertical limb. Such Cenozoic tectonism also produced a series of northeast-southwest trending fault zones that crosscut the region, including the newly defined Mathias, Diamond, and Wrong Faults. Along each of these newly defined faults, the fault block to the southeast has been uplifted relative to the northwestern fault block and rocks from progressively deeper in the crust have been exposed. Ongoing transpression across the Alpine Fault Australian-Pacific plate boundary has uplifted ~740 ka paleo-river/glacial outwash terraces, deposited by the Haast River, by ~400-500 m. Likewise, 123 ± 7 ka paleo-shallow-marine terraces at Knights Point have been uplifted 113 m. Based on the ages and elevations of these terraces, average uplift rates in the Bald Hill-Maori Saddle region have accelerated from ~0.55 mm/yr (~740 ka to 123 ± 7 ka) to 0.86 mm/yr (123 ± 7 ka to present) during Mid- to Late-Quaternary time. OURArchive handle The handle from the Otago University Research Archive (OURArchive) <a href="http://hdl.handle.net/10523/1836">http://hdl.handle.net/10523/1836</a> OURArchvive access level Open Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. Bald Hill Southland Thesis description Number of pages, maps, CDs, etc. vii, 237 p. : col. ill., col. maps ; 30 cm. + CD-ROM (4 3/4 in.) in pocket. 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 2011Ryland Creator An entity primarily responsible for making the resource Ryland, Campbell Bradley Date A point or period of time associated with an event in the lifecycle of the resource 2011 Title A name given to the resource The Geology and Structural Evolution of the Bald Hill-Maori Saddle Region, South Westland, New Zealand Subject The topic of the resource Map Structural geology petrology Bald Hill Detachment Fault gneiss granite Greenland Group lamprophyre Maori Saddle Metamorphic Core Complex Otumotu Formation South Westland Structural Evolution https://theses.otagogeology.org.nz/files/original/1cdf584d9cc6703a29b0906c01d85bf6.pdf 2208d4dbfb8034ca3b3069bade4af148 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 ((167.524545568000121 -45.056757791999985,167.567776805000108 -45.057924913999955,167.589182872000038 -45.129208670999958,167.591698727000107 -45.137574876999963,167.500653986000088 -45.148688074999939,167.45255927200003 -45.105911456999934,167.500504435000039 -45.056101594999973,167.524545568000121 -45.056757791999985)) Author last name Last name of the Author Ryder-Turner Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? BSc(Hons) Advisers Who supervised/advised this student Coombs, D.S. Abstract The Abstract for this thesis An area covering approximately 25 square kilometres between the N.W. and S.W. Arms of Lake Te Anau is described. The area is divided into two terranes on the basis of differing styles of tectonic deformation, metamorphism and rock types. The line of demarkation falls on the Howitt Peaks Fault - a major northeast-southwest striking feature. The rocks to the northwest include schists, quartzofeldspathic- and hornblende bearing- orthogneisses, while the rocks to the southeast consist of gneisses, a layered gabbro, hornblende tonalites and diorites, tonalites, granodiorites and granites. A Late Stage granite is intruded on both sides of the fault. At least three and possibly four tectonic/deformation events are recognized : one producing a pervasive foliation and lineation; the second, activation of large scale faulting; the third, reactivation and uplift. Two stages of metamorphism are also recognized : Tuhuan (?) amphibolite facies metamorphism and Rangitata prehnite-purnpellyite (?) facies metamorphism. The possibility of formation of the foliation and lineation as a result of pre-Tuhuan deformation as distinct from the development of syn-Tuhuan lineation is postulated. The tectonic-"stratigraphic" position of the area in Fiordland with respect to the models of Gibson (1979) and Oliver & Coggon (1979) is discussed and it is suggested that it may straddle the lateral equivalent of the Doubtful Sounq and Western Manapouri Provinces. Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. Middle Fiord Lake Te Anau Thesis description Number of pages, maps, CDs, etc. 128 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 1980Ryder-Turner Creator An entity primarily responsible for making the resource Ryder-Turner, Alastair George. Date A point or period of time associated with an event in the lifecycle of the resource 1980 Title A name given to the resource Geology of an area between Northwest and Southwest Arms, Middle Fiord, Lake Te Anau. Subject The topic of the resource Map Igneous petrology Metamorphic geology Structural geology gabbro gneiss Howitt Peaks Fault https://theses.otagogeology.org.nz/files/original/6dd2d5562b00b272e6f470759b2bf7c2.pdf 9208d63db4b2c8a856e17da9b8cb8825 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 ((172.217094307582386 -42.372009673779147,172.114818247157274 -42.372397465966259,171.946853489593309 -42.269944816703941,171.945245499413716 -42.197967010323545,172.096317437411642 -42.053599714051359,172.229776630047581 -42.056360225916329,172.217094307582386 -42.372009673779147)) Author last name Last name of the Author Tulloch Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? PhD Advisers Who supervised/advised this student Coombs, D.S. Abstract The Abstract for this thesis The Karamea Batholith forms part of the zone of calc-alkaline erogenic batholiths which rim the Pacific continental margin. In the vicinity of the Victoria Range the batholith is flanked by quartz-rich sandstones, and argillites of the Greenland Group (?-Lower ordovician). Contact metamorphism is pronounced on the eastern flanks where biotite, andalusite and cordierite have developed; to the west, biotite only is observed, and the present contact is faulted. A major shear zone forms much of the western margin of the Karamea Batholith in the Victoria Range. More recent high angle reverse faulting subparallel to this shear zone has thrust batholithic rocks westwards over Greenland Group and Tertiary sediments. Banded metapelites and metapsammites (Victoria Paragneiss) occur within the batholith in the south of the mapped area, together with minor anatectic leucosome and amphibolite, and rare calc-silicate horizons. Metapelites contain almandine garnet and sillimanite, and rare K-feldspar; Rb-Sr whole rock dating indicates a late Precambrian metamorphism. Most of the plutonic rocks in the Victoria Range have been grouped into 3 suites. Gneissic granitoids of the Tarn Summit Suite (Devonian) subconcordantly intrude the Victoria Paragneiss, and form the bulk of the batholith. These tonalitic to granitic rocks are characterised by abundant red-brown biotite, which generally defines an ESE trending foliation. The Tobin Metabasite Suite (Triassic) comprises a number of small intrusions with tholeiitic affinities, composed largely of plagioclase-hornblende-biotite. The Rahu Suite (Cretaceous ) comprises five relatively massive, steep sided, high-level plutons, several of which have chilled marginal facies. Four of these plutons are further characterised by green biotite, and complexely zoned and twinned plagioclase. The fifth pluton (Desolation Row Granite) is a garnetiferous alkali-feldspar muscovite granite. A prominent circular topographical feature (15 km in diameter) in the Victoria Range is considered to reflect doming and faulting produced during Rahu Suite plutonism. The Macey Granite is a distinctive fault~ounded unit forming much of the western boundary of the batholith. Euhedral K-feldspar megacrysts and abundant hornblende are characteristic, and render correlation with either Rahu or Tarn Summit Suites difficult. composition of plagioclase in the Rahu Suite 'green biotite' granitoids decreases from ~ An30 - An15 (while modal biotite decreases from 7.8- 3.4%), while that in the Desolation Row Granite is albite, ii Anl-3" K-feldspar is present in most granitoids and is maximum microcline generally of late origin. Green hornblende in the Macey Granite is ferroedenite, while that in the Tobin Epidiorite is magnesia-hornblende. High Fe 3+ /Fe 2+ and Fe 3+/ Ti produces the green absorption colour characteristic of Rahu Suite biotites. Biotite LFe/LFe+Mg ranges from 41 (Tobin Epidi orite) to 89 and is positively correlated with Al. Crystallization of magmatic epidote (Ps25_29), which occurs as euhedral inclusions within Rahu Suite biotite, necessitated high fo2 and Pfluid" In more evolved Rahu Suite magmas high fo2 (and high MnO/FeO) also favoured crystallization of ilmenite, containing up to 40 mol.% MnTio 3 , and almandinespessartine garnet. Lower f02 and MnO/FeO, and higher Pfluid favoured almandine-rich garnets in more evolved Tarn Summit Suite magmas. Magnetite (ulvospinel <0.62%) is restricted to the more mafic of the Rahu Suite plutons. Gahnite and columbite occur in the highly evolved Desolation Row pluton, largely as a result of the lack of biotite, in which Zn, Nb and Ta normally reside. Major and trace element variation diagrams reveal distinct trends for the Rahu and Tarn Summit Suites except at high sio 2 content. Relationships in the system Ab-An-Or are compatible with a single Rahu lineage resulting largely from plagioclase fractionation. However, major element mixing models suggest that, in general, variation in the Rahu Suite is the result of progressive partial melting rather than simple (Raleigh) fractionation, although incremental fractionation could produce the variation. Neverthel ess in the Desolation Row Granite the only mechanism capable of producing t he observed extreme trace element enrichment/depletion is fractional crystallization. Chemical characteristics of the Victoria Range granitoids support the field and petrographic recognition of two distinct suites, and the similarity of this distinction with the I (Rahu Suite) and S (Tarn Summit Suite) type subdivision recognised in S. E. Australia. In par ticular, r ocks of the Rahu Suite are relatively rich in ea, Sr, Ba, Na and Mn, while Tarn Summit rocks are relatively rich in Fe, Ti, Mg and Rb. Initial 87 sr; 86 Sr is higher in the Tarn Summit Suite (0.709) than the Rahu Suite (0.706-0.707). Rahu suite magmas were possibly derived by partial melting of either subduction zone-derived intermediate-basic rocks or Rh-depleted iii granulite facies rocks near the base of the crust, or immature, possibly volcaniclastic, sedimentary rocks. Tarn Summit granitoids are more likely to have been derived by partial melting of pelitic metasedimentary material within. the continental crust. Hydrothermal alte;ation is common in granitoid rocks of the Victoria aange ; release of Ca from altered plagioclase has enabled complimentary replacement of biotite by a number of Ca-Al silicates, including andraditegrossular garnet and Fe-rich epidote, prehnite and pumpellyite, and Al-rich sphene; in addition to chlorite and -K-feldspar. Sparsely distributed lamprophyre dykes (Cretaceous) intrude both Tarn summit and Rahu Suites, and trend N-S. Camptonites are restricted to the west of the range and spessartites to the east. Some camptonites have fenitized their granitoid hosts. Composite dykes (emulsion textured basaltic-andesite/ trondhjemite) are restricted to Tarn Summit Suite hosts and trend E-W. The acid phase is considered to represent a melt, derived either by fractional crystallization or melting of basalt, or by melting of granitoid country rocks, subsequently modified by reaction with the basaltic host. Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. Victoria Range Thesis description Number of pages, maps, CDs, etc. 301 leaves, 29 leaves of plates : ill. ; 30 cm. + + 1 maps. 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 1979Tulloch Creator An entity primarily responsible for making the resource Tulloch, Andrew James. Date A point or period of time associated with an event in the lifecycle of the resource 1979 Title A name given to the resource Plutonic and metamorphic rocks in the Victoria range segment of the Karamea batholith, Southwest Nelson, New Zealand. Subject The topic of the resource Map Igneous petrology Metamorphic geology Mineralogy Geochemistry gneiss granitoid gneiss Karamea Batholith https://theses.otagogeology.org.nz/files/original/17f072b83aad38252c6506b826edf68f.pdf 06f085bdf59c3d59c28b9e6237d753c8 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 ((167.649548416000016 -45.342765104999955,167.627646466000101 -45.344260030999976,167.627246164000098 -45.343539864999968,167.595193962000053 -45.285812539999938,167.646166727000036 -45.258094748999952,167.646319889000097 -45.258148369999958,167.661435641000025 -45.263438812999937,167.697853712000096 -45.276314722999984,167.737161115000049 -45.290247198999964,167.732881904000124 -45.334611912999947,167.732870179000088 -45.334733367999945,167.732799638000074 -45.335464087999981,167.732775972000013 -45.335688441999935,167.722938104000036 -45.33647239499993,167.650913795000065 -45.342648476999955,167.649548416000016 -45.342765104999955)) Author last name Last name of the Author Jamieson Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? PGDipSci Advisers Who supervised/advised this student Carter, R.M. Abstract The Abstract for this thesis Fiordland gneiss, epidiorite and granodiorite are mapped and described together with an onlapping transgressive sequence of Cainozoic sediments. Amphibolite, plagioclase-biotite-hornblende gneiss and plagioclase-biotite. gneiss are differentiated within the gneisses previously mapped by Wood (1962) as Wet Jacket Formation. A basic intrusion, the Garden Point Epidiorite, occurs in the southern part of the study area, and is considered an offshoot of the main Mt. Luxmore basic and ultrabasic intrusive body. The synmetamorphic Takahe Granodiorite (new name) occupies the greatest area in the region studied and is considered similar to other Eastern Fiordland acid intrusives. Whole rock geochemical analysis was undertaken on the gneiss, epidiorite and granodiorite. The results obtained were used in correlation with other Eastern Fiordland rocks as well as providing information on depth and temperature of emplacement (granodiorite), primary lithology (gneisses) and cryptic variation (epidiorite). The onlapping Cainozoic sediments are studied, and type sections proposed for the formations originally named by McKellar (1956). Thirteen lithofacies (A - M) are recognized within the sequence. Palaeontological, petrographic and sedimentologic evidence is used to infer a depositional history and palaeogeography, The sediments, non and shallow marine sandstones and limestones overlain disconformably by a condensed sequence, hemipelagic muds, redeposited sands and flysch are strongly influenced by the interpreted tectonic history of the Moonlight Tectonic Zone. Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. Takahe Valley Thesis description Number of pages, maps, CDs, etc. 97 leaves : illus. (part col.) map. (col. 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 1979Jamieson Creator An entity primarily responsible for making the resource Jamieson, Bryan Stuart, 1956- Date A point or period of time associated with an event in the lifecycle of the resource 1979 Title A name given to the resource Geology of the Takahe valley area, Eastern Fiordland. Subject The topic of the resource Map Geochemistry Igneous petrology Metamorphic geology Sedimentology Cenozoic epidiorite gneiss granodiorite https://theses.otagogeology.org.nz/files/original/7c4b9998509cec22f59b571d166401cb.pdf 142bba611ad4f5eef8c4187942e09d34 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 ((167.246886952000068 -45.599507742999947,167.22578730500004 -45.638927412999976,167.064722370000027 -45.632481707999943,167.054352757000061 -45.592867074999958,167.043740065000065 -45.552266308999947,167.042797882000059 -45.54865899899994,167.152742982000063 -45.45205727299998,167.161667105000106 -45.444196837999982,167.190673406000087 -45.452684006999959,167.252197727000066 -45.470653096999968,167.253656819000071 -45.471078704999968,167.268578496000032 -45.495803274999957,167.285129664000124 -45.523200380999981,167.286463181000045 -45.525406492999934,167.284698947000038 -45.528714303999948,167.261929585000075 -45.571367371999941,167.246886952000068 -45.599507742999947)) Author last name Last name of the Author Gibson Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? PhD Advisers Who supervised/advised this student Cooper, A.F. Norris, R.J. Abstract The Abstract for this thesis Two distinct petrographic provinces are recognised in central Fiordland. A Doubtful Sound Province in which metasediments of miogeosynclinal origin predominate and a western Manapouri Province which largely comprises gneisses of inferred eugeosynclinal provenance. The provinces are juxtaposed along a major fault zone. Synmetamorphic granitoids characterise both regions but gabbroids and their metamorphosed equivalents (Mt George Metabasites) have only been observed in the Doubtful Sound Province; post-tectonic granitoids are recognised only in the Western Manapouri Province. A model is proposed whereby the two provinces were juxtaposed during the Tuhua Orogeny. The Doubtful Sound Province has experienced multiphase deformation and metamorphism. First generation folds are uncommon, isoclinal, and developed during kyanite grade regional metamorphism. They are almost everywhere strongly overprinted by north-south trending second generation structures. Metamorphic reconstitution also accompanied second generation folding and is most pronounced within the environs of the Mt George Metabasites. A thermal aureole is recognised in which sillimanite and sillimanite-K feldspar zone assemblages have developed. Hornsfelsic rocks are absent and emplacement of the metabasites is inferred to have occurred whilst the country rocks were still undergoing regional metamorphism. Assemblages within the metabasites and country rocks are generally cofacial, although locally metamorphism under more anhydrous conditions has produced granulite and hornblende-granulite facies rocks within the former. A third generation of folding producing broad, open folds was accompanied by minor recrystallisation under greenschist-lower amphibolite facies conditions. Fold axes are dominantly north--south. The Doubtful Sound Province is everywhere affected by faulting. Two periods of faulting are recognised: an early period of thrust faulting which followed or occurred late during second generation folding, and a subsequent period of high-angle, predominantly reverse faulting. Thrust faulting was directed from west to east and carried lower crustal rocks (the Black Giants Complex) into the Doubtful Sound Province. The complex comprises an incomplete sequence.of layered intrusive rocks that have been metamorphosed under extremely high pressures. They constitute the deepest structural level rocks yet reported in Fiordland. Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. Wilmot Pass Fiordland Thesis description Number of pages, maps, CDs, etc. 315 p., 37 leaves of plates ; 30 cm. + + 3 maps in pocket. 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 1979Gibson Creator An entity primarily responsible for making the resource Gibson, George McCartney. Date A point or period of time associated with an event in the lifecycle of the resource 1979 Title A name given to the resource Metamorphites at Wilmot Pass, Central Fiordland, New Zealand. Subject The topic of the resource Map Metamorphic geology Structural geology gabbroid gneiss granitoid metabasite metasediment https://theses.otagogeology.org.nz/files/original/a48d1529020f2d418581f3673192013f.pdf 9131ecf2b034bd698ed9549ebcd33e7b 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 ((167.372597093000081 -45.891424211999947,167.329609893000111 -45.858959734999985,167.322869460000106 -45.853864392999981,167.332404670000074 -45.812974911999959,167.353777472000047 -45.721094620999963,167.363069290000112 -45.681051249999939,167.391251269000122 -45.685986409999941,167.511416170000075 -45.706941805999975,167.484803361000104 -45.847758616999954,167.483519846000036 -45.854531385999962,167.38790240000003 -45.90296998599996,167.372597093000081 -45.891424211999947)) Author last name Last name of the Author Higgins Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? BSc(Hons) Advisers Who supervised/advised this student Reay, A. Abstract The Abstract for this thesis An area of high grade basement terrain is described from the Green Lake area, Eastern Fiordland. The crystalline complex is mapped in three groups - The Metamorphic group, containing quartzo-feldspathic schists and gneisses; The Syntectonic intrusive group, consisting of gneisses of dioritic to tonalitic composition which concordantly intrude the Metamorphic group (Within this group occurs a gneissic aegirine granite, an unusual rock type, the origin of which is discussed.); The Post-tectonic intrusive group, made up of discordant stocks of diorite and a granodiorite batholith which intrude the complex and postdate the main regional metamorphic episode of epidote-amphibolite grade. Contact metamorphic effects, that reached hornblende hornfels facies, are observed at some of the boundaries of the granodiorite batholith. Microcline megacrysts from the granodiorite are investigated, using experimental data and microprobe analysis, and a mechanism involving pTessure variation during crystallisation is suggested for their origin. An exsolution hypothesis for the formation of myrmekite in the granodiorite is indicated from microprobe analysis. Shallow water tertiary sediments are deposited on the eastern edge of the granodiorite batholith. Faulting is extensively developed in the area and one major fault, the Fiordland Boundary fault is of regional significance. Structurally the rocks strike North-South and dip to the west. The Green Lake suite of rocks is similar to those mapped by Turner in 1938 in the eastern Manapouri region. Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. Green Lake Fiordland Thesis description Number of pages, maps, CDs, etc. 90 p. : illus. (part col.), maps (2 col. 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 1975Higgins Creator An entity primarily responsible for making the resource Higgins, Neville Charles. Date A point or period of time associated with an event in the lifecycle of the resource 1975 Title A name given to the resource Geology of the Green Lake area, Eastern Fiordland, New Zealand. Subject The topic of the resource Map Igneous petrology Metamorphic geology Mineralogy Structural geology gneiss intrusives microcline myrmekite schist https://theses.otagogeology.org.nz/files/original/6e92e432aab5cf82e1b71abbf3aac22c.pdf 337d7901f167abee4e7b8f920deb9ae1 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 ((167.589182872000038 -45.129208670999958,167.543631172000119 -45.130419058999962,167.524545568000121 -45.056757791999985,167.521113179000054 -45.043490254999938,167.64234400700002 -45.039251233999948,167.658252799000024 -45.127121700999965,167.658291904000066 -45.127337365999949,167.658233059000054 -45.127338977999955,167.589182872000038 -45.129208670999958)) Author last name Last name of the Author Morrison Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? BSc(Hons) Advisers Who supervised/advised this student Wood, B.L. Abstract The Abstract for this thesis A layered gabbro overlying granodiorite and a sequence of hornblende-bearing and quartzofeldspathic gneisses have been described from an area of 25km2 about Lake Hankinson and the N.W. Arm, Middle Fiord, Lake Te Anau. The gneissose rocks represent a westward younging sequence of basic and semibasic (basic-intermediate) lavas and tuffs overlain by quartzofeldspathic and possibly calcareous sediments. This sequence has been completely recrystallised by amphibolite grade metamorphism. South of a roughly E-W trending line through the centre of the area (the Howitt Peaks Fault) gneissose rocks are uncommon. Instead, a flat-lying sequence of differentiated ultrabasic rocks, approximately 550 feet thick, overlie felsic igneous rocks of a dominantly granodioritic composition. This sequence is in various stages of recrystallisation under the influence of amphibolite grade metamorphism~ The degree of recrystallisation is largely dependent on the composition of the original rock. Study of a range of secondary phases by optical and X-ray methods, suggest that mineral composition is also largely dependent on the composition of the original rock. Two phases of faulting accompanied by retrogressive metamorphism and crush zones disrupt all lithologies and give rise to intermixing of adjacent rock types. On the basis of tectonic position and associated rock types the N.W. Arm gabbro is thought to be genetically related to the Mt Luxmore Ultrabasics of the South Fiord, Lake Te Anau. Comparisons with Central Fiordland gabbroic bodies are also considered. Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. North-West Arm Middle Fiord Lake Te Anau Thesis description Number of pages, maps, CDs, etc. 88 leaves : illus. maps (fold) ; 29 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 1973Morrison Creator An entity primarily responsible for making the resource Morrison, Gregg W. Date A point or period of time associated with an event in the lifecycle of the resource 1973 Title A name given to the resource Geology of an area about N.W. Arm, Middle Fiord, Lake Te Anau Subject The topic of the resource Map Igneous petrology Metamorphic geology Structural geology gabbro gneiss granodiorite layered gabbro ultramafic rocks