1 10 10 https://theses.otagogeology.org.nz/files/original/e47adc080533b0cc60ea1f0566f66b1c.pdf 1855ca71ca3e4fac2ee1de93aed290a6 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 ((169.407850777000021 -43.840066757999978,169.393257502000097 -43.839608182999939,169.279874257000074 -43.835980994999943,169.276005241000121 -43.835855203999984,169.275804193000113 -43.833527861999983,169.275404457000036 -43.828900007999948,169.274020033000056 -43.812866948999954,169.281810921000101 -43.806821722999985,169.285204120000117 -43.804188261999968,169.296875128000124 -43.795127788999935,169.296996865000096 -43.795033260999958,169.316007292000108 -43.789310391999948,169.349452312000039 -43.790596086999983,169.351884655000049 -43.792115859999967,169.359846715000117 -43.797089795999966,169.368692788000089 -43.802614392999942,169.395260185000097 -43.806344195999941,169.409380174000034 -43.808323801999961,169.409461125000121 -43.808335145999934,169.407850777000021 -43.840066757999978)) Author last name Last name of the Author Wallace Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? BSc(Hons) Advisers Who supervised/advised this student Cooper, A.F. Abstract The Abstract for this thesis This study reports the investigation of a metamorphic terraine in the Mataketake Range, South Westland, where the high grade axis of the Haast Schist Group abuts the Alpine Fault. P-T conditions accompanying intense deformation of a eugeosynclinal suite has produced epidote-amphibolite, amphibolite facies metamorphism and formed amphibolites, metacherts and quartzofeldspathic gneisses. Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. Mataketake Range Westland Thesis description Number of pages, maps, CDs, etc. vii. 94 p. 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 1971Wallace Creator An entity primarily responsible for making the resource Wallace, RC Date A point or period of time associated with an event in the lifecycle of the resource 1971 Title A name given to the resource Metamorphism and Structural Geology of the Mataketake Range, South Westland. Subject The topic of the resource Map Metamorphic geology Structural geology Alpine Fault amphibolite lamprophyre https://theses.otagogeology.org.nz/files/original/be434e83aedf802cd21e538269fdebb1.pdf f4d1daa864bbb00ab6bb20fe28e8d4d0 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 ((167.744530661000113 -46.763768194999955,167.738920982000081 -46.767671323999934,167.699381163000112 -46.765464519999966,167.699071318000051 -46.76544619699996,167.700800293000043 -46.747200731999953,167.704682983000112 -46.706198580999967,167.705577600000083 -46.696736785999974,167.781628351000109 -46.676362801999971,167.863987130000055 -46.679595587999984,167.882538480000107 -46.680314647999978,167.978642696000065 -46.713028068999961,167.997356756000045 -46.7193815,167.997041787000057 -46.728052126999955,167.995571318000088 -46.768408157999943,167.9896303270001 -46.768582088999949,167.947301225000047 -46.769827173999943,167.93442630900006 -46.756540194999957,167.921021924000115 -46.755937614999937,167.766219696000121 -46.748863922999931,167.765965011000048 -46.748852712999962,167.744530661000113 -46.763768194999955)) Author last name Last name of the Author Waddell 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 Rocks exposed around the north coast of Stewart Island are mapped on a scale of 1 inch:0.5 ml and are documented in petrographic detail. The area of coast mapped runs from just south of North Red Head around to Saddle Point, a distance of 35km. The rocks have been previously mapped as Rakeahua Granite, Paterson Group and Anglem Complex. These three broad divisions are followed herein. The Rakeahua Granite around North Red Head is found to be an alkali leucogranite or alaskite, as distinct from biotite granite previously known from the Tin Range and elsewhere. The alaskite is considered co-eval with this biotite granite. A moderately sheared and crushed equivalent of the alaskite is mapped as Crushed Rakeahua Granite; apart from mechanical effects, this rock is virtually mineralogically identical to the alaskite. It is found within the Freshwater Graben associated with Paterson Group rocks. Partial analyses of Rakeahua Granite and Crushed Rakeahua Granite rocks revealed 3.9 to 4.5% Na2O, 4.5 to 5.0% K2O (with two lower values from the Crushed Rakeahua Granite), and 0.3 to o.6% CaO. From phase diagram and mineralogical considerations the Rakeahua Granite is considered to have been intruded at around 700°C at a depth approximating 4km. (1.3 kb PH20). The Rakeahua Granite is correlated with Fiordland granites (?Kakapo Granite, ?Pomona Granite) and is considered to be most likely Late Mesozoic in age. Paterson Group rocks are exposed on West Ruggedy Beach as "interbedded" rhyolite, meta-andesite, laminated meta-siltstone (unfossiliferous) and shear foliated metaconglomerate. This distinctive group of rocks is here named the West Ruggedy Formation. Incipient to moderately well developed greenschist facies assemblages are present in all rocks of the West Ruggedy Formation. The most common assemblage is quartz-albite-biotite-epidote-sphene. The laminated siltstone is unusually enriched in boron, containing up to 5% (authigenic) tourmaline. The West Ruggedy Formation occurs as an infaulted sliver in Crushed Rakeahua Granite in the Freshwater Graben, and probably assumed its present position as a result of the tectonic activity associated with the formation of this graben. Suggested correlatives of the West Ruggedy Formation are the Permian sedimentary and tuffaceous rocks east of the Longwood Range and in the Riverton-Bluff areas. Anglem Complex rocks are mapped as two suites viz. migmatitic and intrusive (or plutonic). The migmatitic suite comprises intimately associated well foliated amphibolite-diorite-tonalite-granodiorite-adamellite and associated ptygmatic quartz-feldspar veins. The intrusive suite is distinguished by its near lack of foliation (more massive "plutonic" appearance) and its greater meso- and macroscopic homogeneity. It comprises hornblende gabbro, noritic leucogabbro and plutonid granodiorite-adamellite. The migmatitic nature of the migmatitic suite is deduced from microtextures, inferred mineralogical reactions and field relations. In the intrusive suite, hornblende in the hornblende gabbro is shown to be secondary, and origin by uralitisation of pyroxenes in noritic leucogabbro is postulated. Granitic and rare andesitic dyke rocks intruding the Anglem Complex rocks are also described. The Anglem Complex rocks were found to be strikingly similar to those at Pahia at the southern end of the Longwood Range and also to those between Pahia and Bluff. Strong correlation with these rocks is emphasised. Upper Permian age for the Anglem-PahiaBluff rocks is deduced from radiometric ages and fossil evidence from the coastal Southland rocks. The dominant structural trend of northern Stewart Island swings from near east-west on the east coast to northwest-southeast on the north and northwest coast. This is the trend of the Freshwater Graben, which is more or less parallel to near vertical sometimes gneissic foliation in the migmatitic suite of the Anglem Complex. The gneissic foliation becomes more obvious to the southwest towards the northeast bounding fault of the graben. A magnetic survey of the Freshwater Graben with a vertical force balance magnetometer successfully delineated the extent of the West Ruggedy Formation. Overall correlation between magnetic vertical force profiles, magnetic susceptibilities and geology proved feasible. Deduced magnetic anomalies in the area of The Neck (Paterson Inlet) are compatible with Southland Syncline geomagnetics, and are correlated with the eastern end of the Stewart Island Negative Anomaly. It is suggested that this anomaly passes through the northwest coast in the Ruggedy Beaches area, several miles further north than previously thought. In a regional sense, two contrasting terranes are present in Stewart Island. The Anglem Complex is broadly correlative with other plutonic-migmatitic suites along the western margin of the New Zealand Geosyncline and the Wakatipu Metamorphic Belt and the Rakeahua Granite is correlative with other granitic bodies emplaced within the Tasman Metamorphic Belt. The Median Tectonic Line of New Zealand probably passes through Stewart Island along the margin of the Freshwater Graben between Paterson Group rocks and the Rakeahua Granite. Two appendices discuss staining techniques used in distinguishing plagioclase and k-feldspar, and problems encountered in compositional determinations of alkali feldspar. Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. Stewart Island Thesis description Number of pages, maps, CDs, etc. xiii, 143 leaves : illus.(1 col.) fold. maps ; 26 1/2 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 1971Waddell Creator An entity primarily responsible for making the resource Waddell, Stewart John. Date A point or period of time associated with an event in the lifecycle of the resource 1971 Title A name given to the resource Some aspects of the geology of the Northern coast of Stewart Island, New Zealand Subject The topic of the resource Map Metamorphic geology Structural geology Igneous petrology Anglem Complex granite Paterson Group https://theses.otagogeology.org.nz/files/original/661b916fd3e428c07d4e8dbfd3ab74a7.pdf 18129e92b7b6a5382d8aa8dc7c174db6 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 ((167.898165306076663 -46.367765882808179,167.894896613933213 -46.402748908665671,167.719972685713515 -46.395975449319167,167.725867057603693 -46.34385124750699,167.899327273282239 -46.355314202539347,167.898165306076663 -46.367765882808179)) Author last name Last name of the Author Spencer 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 Between Pahia Peninsula and Kawakaputa Bay to the East, a S.E. trending arm of crystalline rock separates Foveaux Strait from a strip of fossil estuarine clays and sands. To the East, Oraka Peninsula performs the same function. The two topographic features are the result of adamolite and granodiorite masses respectively intruding a previously emplaced gabbroic mass composed mostly of norite. The following phenomena are thought to have occurred. The formation of an auroole (probably no more than 200' thick) at the contact between the norite and the intruding acid body. Hybrid rocks are formed due to the metasomatic hydrothermal effect on the norite of emanations from the acid body. Mechanical mixing in places causes a very distinctive microscopic lithology which is, however, difficult to distinguish from in hand specimen, those rocks that have undergone 'in-situ' metasomatism. The contamination of the acid magma by reciprocal reaction between the magma, and the myriad basic inclusions within the magma, that are thought to have been derived from the noritic wall rock. The acid rocks(at Wakapatu at least) are believed to have been basified from an original adamellite gradationally through to a diorite. (these are so named on the basis of(Or/0r+Ab), because it is thought that orthoclase, in this case, is a most important mineral. Its concentration is indicative of.tho processes at work) The presence of a large regional batholith (probably equivalent to Anglem Complex rocks), intruding norites(Bluff Complex probably) for the whole Longwood-Wakapatu-Pahia-Bluff-Stewart Island-Ruapuke Island region North of the Median Tectonic Line, and possibly extending much further North than the Longwoods,is postulated. Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. Wakapotu Oraka Peninsula Thesis description Number of pages, maps, CDs, etc. 98 leaves, photos, map(folded in pocket) 26 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 1971Spencer Creator An entity primarily responsible for making the resource Spencer, PL Date A point or period of time associated with an event in the lifecycle of the resource 1971 Title A name given to the resource Igneous Instrusives at Wakapatu and Oraka Peninsula, Coastal Southland. Subject The topic of the resource Map Igneous petrology Mineralogy adamellite dyke granodiorite metasomatism norite intrusion https://theses.otagogeology.org.nz/files/original/c283583b80fcfa50645bc311dce99b52.pdf cb134a143a75f20aae7c1aa39feacabc 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 ((169.465968833000034 -44.979481206999935,169.464040016000013 -45.020740222999962,169.415240285000095 -45.020082112999944,169.408048343000019 -45.019982162999952,169.270741612000052 -45.018011699999931,169.237401509000051 -45.017505959999937,169.23902492000002 -44.963132512999948,169.240499027000055 -44.913758276999943,169.272723363000068 -44.914265306999937,169.369780085000116 -44.915730030999953,169.411927831000071 -44.916340437999963,169.414306060000058 -44.91637327199993,169.438955300000089 -44.916725422999946,169.468877621000047 -44.917142372999933,169.466858546000026 -44.960443694999981,169.466586572000097 -44.966276852999954,169.465968833000034 -44.979481206999935)) Author last name Last name of the Author Paterson Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? BSc(Hons) Advisers Who supervised/advised this student Norris, R.J. Abstract The Abstract for this thesis Thirty square miles of the Haast Schist within The Bendigo area, including the quartz-gold lodes of the Bendigo mining area, were investigated. Although previously mapped as Chlorite IV Subzone of the Greenschist Facies, this area is now considered to be in the Biotite Zone. Three principal phases of deformation were recognised on the basis of mesoscopic structures. The dominant structures on a mesoscopic scale were produced during the second phase, and are related to a macroscopic Phase II recumbent isocline or nappe facing north-east, with a hinge zone west of the Rise and Shine Shear Zone. This hinge zone is mapped throughout the area. Tectonic profiles indicate that the axial surface of this structure is flexured, although no mesoscopic evidence of this was found. Two major faults are mapped. The already documented, mineralised Rise and Shine Shear Zone separates schist which has suffered extreme flattening perpendicular to S2 in the northeast, from schist characterised by abundant tight F2 folds in the southwest. The Green Valley Fault is here proposed for structural discontinuity in the southwest corner of the Bendigo area. It separates a zone of abundant greenschist and piemontite schist horizons in the southwest, from the more common coarsely laminated, quartzofeldspathic schist in the northeast. As far as exposure allows, the quartz-gold and quartz-scheelite-gold lodes in the area are described. Fluid inclusions in the lode quartz are studied with a view to elucidating the origin of the mineralised quartz lodes. The undeformed nature of the quartz lodes suggests lode formation occurred after the peak of deformation and metamorphism, i.e. at temperatures and pressures below Biotite Zone metamorphism conditions of 440 Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. Bendigo Otago Central Thesis description Number of pages, maps, CDs, etc. 142 leaves : 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 1971Paterson Creator An entity primarily responsible for making the resource Paterson, CJ Date A point or period of time associated with an event in the lifecycle of the resource 1971 Title A name given to the resource Structure, metamorphism and mineralisation in the Haast Schist at Bendigo, Central Otago. Subject The topic of the resource Map Metal-ore deposits Metamorphic geology Mineralogy Structural geology Biotite Zone fluid inclusions gold Haast Schist https://theses.otagogeology.org.nz/files/original/ecf2ddf8f5c11edbdf7dfd23d0afa012.pdf d89ad91962d2703bf1c31b3bb13b9670 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 ((168.027566626415876 -44.451874879108956,168.022912483185223 -44.444049821895504,168.134844702115259 -44.377429258361822,168.218511937986307 -44.467193213073777,168.16143131753941 -44.561962173317518,168.058608899096896 -44.556596423622764,168.027566626415876 -44.451874879108956)) Author last name Last name of the Author Nauman 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 A sequence of Permian metavolcanic and metasedimentary rocks of the Alabaster Group, with associated intrusives, have been mapped in the southern Skippers Range. Layered rocks arc generally steeply dipping, and most contacts are fault bounded. The Eglinton Sub Group - a largely shallow water or sub-aerial sequence - consists mainly of porphyritic metabasic lavas, volcanic breccias and metabasic (and meta-andesitic) dykes of the Mantle Volcanics. Greenstone, tuffaceous breccia and finely bedded, locally hornfelsed, sediments of the Hidden Flats Greenstone are intruded by quartz diorite and granodiorite of the Mackay Intrusives. The Camp Conglomerate, a probable river channel deposit, overlies a small part of' the Mackay Intrusives in the south-western part of the present area. Most of the Mantle Volcanics hove been metamorphosed to prehnite-pumpellyite facies - some may be verging on the pumpellyite-actinolite facies. To the west, and separated from the Eglinton Sub Group by the Wilmot Fault, is the Skippers Sub Group - here formally upgraded from formational status. The Skippers Sub Group comprises the Slabby Peak Schist - a metasedimentary sequence of semi-schist with local amphibolitic inclusions; the Lone Stag Layered Complex - a largely deformed originally layered basic and ultrabasic intrusion; and the Hokuri Dykes- a meta-ankaramitic and meta-andesitic,complex dyke swarm. These rocks have been metamorphosed to greenschist facies, and some may be transitional to albite-epidote amphibolite facies. The Darran·Complex crops out in the far north-west of the area,in fault contact with the Skippers Sub Group. Albite-epidote hornfels rafts are common in these rocks. Alkali analyses are reported and their significance discussed. The Mantle Volcanics are envisaged as part of R Permian arc along the western margin or the New Zealand Geosyncline. The arc supplied sedimentary debris to a basin where the parent sediments or the Slabby Peak Schist occur. This basin may possibly be compared with an extensional interarc basin similar to those developed in present day island arcs. Intrusion of the Lone Stag Layered Complex and the extensive swarm of Hokuri Dykes may be genetically related to the orig1n of the proposed extensional basin. Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. Skippers Range Thesis description Number of pages, maps, CDs, etc. 100 Leaves : illus, photos, diagms, 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 1971Nauman Creator An entity primarily responsible for making the resource Nauman, CR Date A point or period of time associated with an event in the lifecycle of the resource 1971 Title A name given to the resource Geology of the Southern Skippers Range, N.W. Otago. Subject The topic of the resource Map Igneous petrology Metamorphic geology Structural geology Alabaster Group Darran Complex https://theses.otagogeology.org.nz/files/original/483e0176004286aa192c6f9e58a669f5.pdf c882ff1075ced5bde4e7d0eefbcfc570 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 ((170.703593806000072 -44.700332404999983,170.626290244000074 -44.699160749999976,170.615482209000106 -44.698994557999981,170.554851887000041 -44.698037434999947,170.554868856000098 -44.696246126999938,170.554969178000079 -44.685610770999972,170.598279596000111 -44.660072228999979,170.622568907000073 -44.639101687999982,170.646758050000017 -44.603809292999983,170.664434413000095 -44.604164813999944,170.666357890000086 -44.604203334999966,170.682677630000057 -44.604528868999978,170.691948853000099 -44.604712766999967,170.704515718000039 -44.620986056999982,170.704478448000032 -44.651689660999978,170.704477858000018 -44.652031757999964,170.704444967000086 -44.677067963999946,170.704416991000016 -44.700344077999944,170.703593806000072 -44.700332404999983)) Author last name Last name of the Author Morton Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? BSc(Hons) Advisers Who supervised/advised this student Carter, R.M. Abstract The Abstract for this thesis This thesis documents the geology of an area in the Lower Hakataramea Valley, some 9 miles north of Kurow, and 20 miles west of Waimate. Basement rocks include greywacke and argillite of Torlesse Super Group (chlorite 1/2). Hurst Lea Sandstone, possibly Cretaceous post Rangitata Orogeny debris, occurs as fault slivers. Work centered on Notocene sediments of Oamaru Group which is subdivided into Hogburn (basal coalmeasures) Subgroups. Hogburn Subgroup includes, (1) Homestead Residual Clay (quartzose clays accumulated on Cretaceous peneplain); (2) Papakaio Formation (transgressive terrestrial Quartz sands and coal measures). Naseby Subgroup includes (1) Tapui Glauconitic Sandstone, subdivided into Incholme Glauconitic Sand (marginal marine concretionary layered, fossiliferous sands and silts) and Black Point Lens (marine, crossbedded sand barrier); (2) Kokoamu Greensand (marine, fossiliferous, calcareous greensand); (3) Otekaike Limestone, subdivided into MAerewhenua Glauconitic Limestone (well indurated, sparsely fossiliferous limestone) and Miller Member (richly fossiliferousm concretionary, glauconitic sands and silts), Balmoral Sands (marine, bioturbated, crossbedded sand barrier), Henrys Road Greensand (lagoonal, glauconitic silts). Wedderburn Subgroup includes regressional terrestrial quartz sand. Oamaru Group sediments represent an almost classic transgressive/regressive scylce, that reached peak transgression during Duntroonian Time (Kokoamu Greensand). Their accumulation in the mapped region was influenced by the Hakataramea High (a local area of positive relief on the peneplain): Hogburn sediments are locally missing on the high itself, and Black Point Lens (found only near the high), Otekaike Limestone (more clastic near the high), Waitoura Marl (more fossiliferous near the high), Balmoral Sand and Henrys Road Greensand (found only near the high) all show facies variation reflecting the continued influence of the high during the whole sedimentary cycle. Pleistocene stratigraphy includes, (i) Smilie Formation (highest terrace, weathered greywacke boulders), (ii) Georgetown Formation (second highest terrace, weathered greywacke boulders), (iii) Morven Formation (third highest terrace, fresh greywacke), (iv) Waikaura Formation (lowest terrace, fresh greywacke). OURArchive handle The handle from the Otago University Research Archive (OURArchive) <a href="http://hdl.handle.net/10523/2695">http://hdl.handle.net/10523/2695</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. Homestead Stream Hakataramea Valley Thesis description Number of pages, maps, CDs, etc. 88 leaves : illus, photos, digrms, Map (folded in pocket); 26 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 1971Morton Creator An entity primarily responsible for making the resource Morton, Malcolm Russell Date A point or period of time associated with an event in the lifecycle of the resource 1971 Title A name given to the resource The geology of the Homestead stream area, Lower Hakataramea Valley, South Canterbury Subject The topic of the resource Map Sedimentary petrology Structural geology Hakataramea High Torlesse Supergroup https://theses.otagogeology.org.nz/files/original/f7ef5d3738bef56859c9b32a1a682cd1.pdf 095190093ebf324522775eaf70be657f 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 ((175.806818890593576 -40.340199672962342,175.8065672762053 -40.296562576907363,175.846612337516717 -40.295881369810729,175.845164678902364 -40.340155786498862,175.806818890593576 -40.340199672962342)) Author last name Last name of the Author Grammer Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? BSc(Hons) Advisers Who supervised/advised this student Carter, R.M. Abstract The Abstract for this thesis Te Apiti, Morgan, Wharite, Hope and Gorge Formations, Saddle Road Group, of Kapitean to Upper Nukumaruan age, unconformably overlie Torlesse Greywacke in the Saddle Road district. The sediments include marine, conglomerates, grits, sands and detrital coiquina limestones. The basement greywacke is placed in the Torlesse Supergroup and two lithologic groupings are recognised, the Ruahine facies and the Wakarara facies. The Ruahine Fault (Lillie,l953 & Kingma, 1962) is remapped as a zone of three parallel faults. The existence of an Upper Tertiary Manawatu Strait is proved on faunal and sedimentological grounds. Pyrite from the Wharite Siltstone is shown to be of bacterial origin. OURArchive handle The handle from the Otago University Research Archive (OURArchive) <a href="http://hdl.handle.net/10523/484">http://hdl.handle.net/10523/484</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. Saddle Road Manawatu Gorge Thesis description Number of pages, maps, CDs, etc. 79 leaves, 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 1971Grammer Creator An entity primarily responsible for making the resource Grammer, Terrence Ronald Date A point or period of time associated with an event in the lifecycle of the resource 1971 Title A name given to the resource The geology of the Eastern Saddle Road area, Manawatu, N.I., N.Z. Subject The topic of the resource Map Sedimentary petrology Geology Manawatu County Manawatu Strait New Zealand Saddle Road Group Torlesse Supergroup https://theses.otagogeology.org.nz/files/original/edf179ba3f63c7a0223607572e7cdd1f.pdf 504ce7a1fe0166220f564ba335a6f61a 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 ((170.703077147000045 -44.384497988999954,170.627277264000099 -44.383270180999943,170.629136006000067 -44.333161812999947,170.629139577000046 -44.333071847999975,170.629148373000021 -44.332850244999975,170.624281396000015 -44.328902663999941,170.626144710000062 -44.266634154999963,170.647943528000042 -44.266966450999973,170.705524829000069 -44.334883119999972,170.704828560000124 -44.334869343999969,170.703077147000045 -44.384497988999954)) Author last name Last name of the Author Fagan Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? BSc(Hons) Advisers Who supervised/advised this student Norris, R.J. Abstract The Abstract for this thesis In the upper Hakataramea Valley, metagreywackes of the Torlesse Supergroup are unconformably overlain by mid-Tertiary shallow marine shelf deposits, the latter largely obscured by Plio-Pleistocene terrace gravels. An attempt is made to describe the extent of textural and mineralogical reconstitution within the metagreywackes. A microscopic metamorphic-textural zonation scheme is adopted and a comparison is made with the mesoscopic textural scheme of Bishop (1970). The metamorphic mineralogy is examined and individual minerals and mineral assemblages falling within the prehnite-pumpellyite and pumpellyite-actinolite facies are described in detail. Possible minimum values for depth of burial, temperature, pressure and a possible maximum value for the geothermal gradient are determined at the prehnitepumpellyiteJpwnpellyite- actinolite isograd. 500 metres of Notocenozoic sediments representing part of a marine transgression-regression sequence are described briefly and partial environmental reconstructions are attempted, based largely on grainsize parameters. A brief account of the Plio-Pleistocene geology is given and a detailed possible sedimentary, metamorphic and structural evolution is described. OURArchive handle The handle from the Otago University Research Archive (OURArchive) <a href="http://hdl.handle.net/10523/2788">http://hdl.handle.net/10523/2788</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. Hakataramea Valley Canterbury south Thesis description Number of pages, maps, CDs, etc. 63 leaves , ill. Photos, maps (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 1971Fagan Creator An entity primarily responsible for making the resource Fagan, Robert Keith Date A point or period of time associated with an event in the lifecycle of the resource 1971 Title A name given to the resource Structure, stratigraphy and metamorphism in the upper Hakataramea valley area, South Canterbury, New Zealand Subject The topic of the resource Map Metamorphic geology Sedimentary petrology gravel metagreywacke https://theses.otagogeology.org.nz/files/original/134d14b1e594a6514733a5cf0b1a3cb6.pdf cbb8cc32d1e4820b95693e6e84f734f3 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 ((172.664777296625402 -41.141775575474256,172.601972030380011 -41.142147699837722,172.508201643884036 -41.06704276257733,172.546798985325722 -41.058244074554551,172.63298816683735 -41.059742495830179,172.67108269080822 -41.076839251709465,172.674420120575519 -41.118558034711448,172.664777296625402 -41.141775575474256)) Author last name Last name of the Author Coleman 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 Cambrian Haupiri. Group consists of a eugeosynclinal sequence, the younger part of which is characterised by contemporaneous facies changes. Interlayered volcanogenic sediments and spilitized basaltic andesite flows in the Devil River Volcanics are the oldest rocks, overlain by the Tasman Formation with one andesite flow (?) and fossiliferous limestone pods in both volcanogenic and non-volcanogenic sediments. Indicative of rapid uplift in the Haupiri Orogeny the Balloon Formation with extensive intraformational conglomerates, and the Lockett Conglomerate have a large proportion of acidic and intermediate igneous detritus along with basic, ultrabasic, metamorphic and sedimentary material. This Cambrian sequence has been thrust along the Anatoki Thrust over the top of the Ordovician miogeosynclinal sequence, with the deep water Aorere and Golden Bay Groups younging east into the shallow water shelf facies that comprise the Mt. Arthur Group. The Cambrian rocks were first folded isoclinally about eastward plunging axes during the emplacement of nappes in the Tuhua Orogeny. At this time a slaty cleavage was formed in the underlying Ordovician rocks and they were deformed with northverging shear and drag folds. Subsequent, largely post-Permian (Rangitata Orogeny(?)) compressional folding throughout the area formed north-south trending folds in both the Cambrian and Ordovician rocks, probably giving rise to a slaty. cleavage (axial planar) in the Haupiri Group and perhaps straining the Lockett Conglomerate. (A finite strain analysis of am~rientad speciman of Lockett Conglomerate is included herein). It is possible the Cambrian sequence, now metamorphosed to prehnite-pumpellyite facies, lies in the axial region of a broad synclinorium. It is unlikely the Golden Bay Group· in the Cobb area is of higher metamorphic grade than the prehnite-pumpellyite facies, although no diagnostic Ca-Al silicates are present. Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. Cobb Valley Thesis description Number of pages, maps, CDs, etc. 99 leaves. 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 1971Coleman Creator An entity primarily responsible for making the resource Coleman, AC Date A point or period of time associated with an event in the lifecycle of the resource 1971 Title A name given to the resource Geology of the Middle Cobb Area, N.W. Nelson. Subject The topic of the resource Map Igneous petrology Metamorphic geology Cambrian Haupiri Group Ordovician prehnite-pumpellyite https://theses.otagogeology.org.nz/files/original/21229b3f4d8a2249e3598e9c02a37bc4.pdf 5b266efdef17eec5eb20f764249cacda 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 ((168.789381282000022 -46.033561523999936,168.786425919000067 -46.043064647999984,168.741686288000096 -46.04900274899996,168.736367585000039 -46.049707509999962,168.701279588000034 -46.054351641999972,168.677980007000087 -46.057430218999976,168.638113580000095 -46.051550351999936,168.607643790000111 -46.047042371999972,168.454774903000043 -46.025304259999984,168.39800174800007 -45.982503615999974,168.352366502000109 -45.948033296999938,168.356061963000116 -45.930303503999937,168.358507852000116 -45.91856700099999,168.36151222400008 -45.904144309999936,168.370304421000014 -45.861899081999979,168.386100415000101 -45.785826225999983,168.387755376000086 -45.777847769999937,168.388875618000043 -45.772434823999959,168.513250395000114 -45.872951648999958,168.550645905000124 -45.894002409999985,168.612833739000052 -45.928630158999965,168.616716945000121 -45.930788529999973,168.621390267000038 -45.931903855999963,168.646224271000051 -45.93783356899997,168.656473915000106 -45.940279506999957,168.720246956000096 -45.955468185999962,168.74264745500011 -45.966729785999974,168.801040200000102 -45.996042649999943,168.795818129000054 -46.012848527999957,168.790266438000117 -46.030710072999966,168.789381282000022 -46.033561523999936)) Author last name Last name of the Author Boles 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 This thesis describes the stratigraphy, petrology, and mineralogy of about 260 sq. km of mainly Triassic rocks on the north limb of the Southland Syncline, Hokonui Hills, Southland. The thesis area consists of a 10km thick sequence of essentially undeformed, steeply dipping, mainly marine, volcanogenic sediments. The classical description of zeolite facies metamorphism (Coombs, 1954) was based on the Taringatura Hills, an area adjacent to the Hokonui Hills. A lithologic map of the area and four detailed stratigraphic columns have been made. The study gives 20 bulk analyses of sandstones, siltstones, and tuffs. In addition, EMA analyses of heulandite group minerals, laumontite, stilbite, analcime, chlorite, celadonite, prehnite, pumpellyite, albitized plagioclase, and fresh pyroclastic plagioclase are reported. The alteration of heulandite to laumontite and of heulandite group minerals to analcime was investigated in laboratory experiments. A study was made of the relationship of composition to optical properties, cell dimensions, and thermal stability of some heulandite group minerals. Numerous strike-slip faults and changes in strike indicate the area has undergone a compressive stress in a northwest-southeast direction, subsequent to the folding of the Southland Syncline. Two units are recognized in the stratigraphically lowest sequence in the area: Ram Hill sandstones and the overlying Waimea siltstones. These units are unfossiliferous and are collectively referred to as the pre-Fairplace beds (1-1.2km thick). Overlying the pre-Fairplace beds is the North Range Group (3-3.5 km thick) which has been subdivided into six formations; Fairplace Formation, Gavenwood Tuffs, Crosshill Gully, North Peak Formation, and Stag Stream Siltstones, in order of younging. New fossil localities indicate that the Crosshill Gully Siltstones and most of the North Peak Formation are of Malakovian age (Lower Triassic, Scythian). The Stag Stream Siltstones is of Etalian age (Middle Triassic, Anisian). The Taringatura Group (Middle and Upper Triassic), which overlies the North Range Group, has not been subdivided but at least one unit, the Bare Tuff Zone, is continuous across the area. The group thins from 5.4 km in the west to 1.8 km in the east. Rock units of the Taringatura Group are more fossiliferous, less traceable, and contain fewer plant fragments than those of the North Range Group. Conglomerates are common throughout the sequence; some contain boulders up to 1.5m in diameter, the lensoidal nature of most conglomerate beds indicates they were deposited mainly in near-shore submarine channels, probably by traction currents. Andesites are the predominant components of pre-Fairplace, North Range Group and Otapirian (Upper Triassic, Rhaetian) conglomerates. Rhyolites and dacites are the predominate volcanics in Kaihikuan (Middle Triassic, Ladinian) and Oretian (Upper Traissic, Carnian) conglomerates. Diorite, tonalite, and grandiorite pebbles are associated with the more basic volcanics whereas granites and adamellites are associated with the more, acid volcanics. Plutonic pebbles are most common in the Taringatura Group. This relationship, in addition to petrographic evidence, indicates that plutonic pebbles were derived from intrusive bodies underlying the volcanics. Rudaceous-size material becomes generally finer grained from west to east in the Glenure Formation. Acid volcanic pebbles occur at a lower horizon in the eastern Hokonuis than in the western Hokonuis. The data indicate the source-area of the acid material is east of the source area of the more basic material. Sandstones are usually massive, poorly sorted, and grading is not common. In many cases sands were probably transported by a grain flow process. Volcanic rock fragments or plagioclase predominates in the sandstones. Detrital quartz makes up <20% of the mode in all samples and in many cases is <5%. The distribution of types of volcanic clasts in sandstones parallel those of conglomerate pebbles. In addition, Otamitan (Upper Triassic, Carnian) sandstones contain predominantly rhyolite and dacite fragments and Jurassic sandstones contain predominantly andesite fragments. The pattern is also verified by distribution of detrital clinopyroxene and Ti02 + Fe2o3 + FeO + MgO. Sandstones with a color mottling on a scale of 3mm up to 1cm are widespread but are especially common in the Taringatura Group. The sandstones are frequently laumontite-rich but the mottled color is mainly due to the unequal distribution of chlorite cement. Non-resistant siltstones are common throughout the sequence. Thick sequences of resistant siltstones occur mainly in the Taringatura Group. Resistant and non-resistant siltstones frequently contain animal trails and borings and traction current indicators, but grading is uncommon. The siltstones were probably deposited at similar depths to the sands but during times of minor tectonic activity. Many resistant siltstones contain albite and/or quartz cements. Vitric and vitric-crystal tuffs are common throughout the sequence and have been altered mainly to heulandite, analcime, laumontite, and montmorillonite. The tuffs are believed to have been transported mainly by air and to have undergone little reworking. In several cases the deposits were prone to slumping. Graded tuffs are common in the Taringatura Group. Relict shards in tuffs of the Gavenwood Tuffs become progressively finer grained from west to east. Fresh pyroclastic feldspars in Oretian tuffs are more sodic than in Malakonian, Etalian and Otapirian tuffs. Vein minerals in the area include laumontite, stilbite, analcime, heulandite group, albite, quartz, calcite, halloysite, and pumpellyite. Laumontite and stilbite are the most common types and occur mainly in pre-Oretian, Otapirian, and Jurassic rocks. The distribution of secondary minerals is related to the bulk composition of the rocks. Secondary cements of prehnite, pumpellyite, laumontite and heulandite are restricted to sandstones containing predominantly andesitic clasts. High proportions of sphene and chlorite are also found in these samples. Albite and/or quartz cements are usually abundant in sandstones containing rhyolitic or dacitic clasts. Laumontite is abundant in Otapirian and Jurassic sandstones as well as in the North Range Group and pre-Fairplace beds. Prehnite is common in the North Range Group and occurs sporadically in Otapirian and Jurassic beds. Plagioclase in fine sandstones ( < 0.2mm average grain size) is much less prone to albitization than in coarser sandstone from the same part of the sequence. Grains which are completely altered have a composition of Ab99.1 An0.9. Albitized portions of grains which are partially fresh have compositions significantly more calcic than completely albitized grains. There is a general tendency for increased albitization towards the base of the section if sandstones of similar grain-size are compared. Laumontite occurs as a replacement of heulandite,detrital plagioclase and as a cement. Alteration of a heulanditized tuff to a laumontitized tuff is nearly an isochemical alteration except that MgO and Fe2O3 + FeO are significantly lower in the laumontitized tuff than in the heulanditized sample due to removal of phyllosilicates. The alteration has been controlled in part by jointing in the rocks. Analcime pseudomorphs after heulandite are common and hence most analcime is believed to have been formed from heulandite group minerals. Analcime can be synthesized from heulandite group minerals at 100°c with solutions of NaOH (0.1m) and Na2CO3 (0.1M and 0.01M) in 3-week runs. Both increased pH and Na+ concentration favor the reaction. The Si/Al ratio of the analcime product is largely a function of the Si/Al ratio of the zeolite reactant. Analcime compositions in the Hokonuis are uniform throughout the sequence and appear to have equilibrated with quartz. Heulandite group minerals in the Hokonuis typically replace volcanic glass or fills cavities in sandstones. They have a wide range of Si/Al ratios (3.0 to 4.3), are rich in Ca, have K/Na ratios '1 in most samples, and sometimes have appreciable Mg. Composition does not vary systematically with depth of burial. However, minerals with relatively high Si/Al ratios are particularly common in Oretian and Otamitan tuffs. Large crystals in cavities or glass vesicles of tuffs have lower Ca contents and higher Si/Al ratios than the crystals replacing glass shards. Composition of the heulandite group minerals is believed to have been controlled by the bulk composition of the glass. Albite is a more common cement or cavity filling than quartz or K-feldspar. Albite replacement of heulandite has been documented in several samples. Prehnite replaces plagioclase, fills cavities, and is inferred to have replaced heulandite in numerous samples. frequently with heulandite than with laumontite. Prehnite occurs more Two varieties are recognized: a "clear" type which contains 4.6 - 6.0 wt % total Fe as Fe2O3 and an inclusion riddled "spongy" type which contains 1.2 - 3.2 wt % total Fe as Fe2O3. Pumpellyite usually occurs in the matrix but replaces plagioclase in some samples. Some of the pumpellyite is inferred to have replaced laumontite. The pumpellyite is optically negative and two optical orientations are recognized. The mineral contains up to 14 wt.% total Fe as Fe2O3. Chlorites in the Hokonuis have wide variations in Al/Mg + Fe ratios (o.36- 0.56). Celadonites, which are most abundant in tuffs, have wide variations in Al/Fe ratios (0.51 - 2.80). Aluminous chlorite and aluminous celadonite co-exist in a tuff. EMA analyses are given for phases in tuffs which have compositions intermediate to chlorites and celadonites and may indicate an interlayered chlorite and celadonite. Mixed-layer clay minerals, including both random and regular mixed-layer types, are not uncommon. Mixed layer montmorillonite-chlorite and montmorillonite-mica have been identified. The geothermal gradient in the Hokonuis is estimated from mineral stability fields to be about 20°C/km. The mineral distribution pattern is interpreted in terms of variations in solution chemistry, initial rock composition, temperature, load pressure, and fluid pressure. A general approach towards regional equilibrium is suggested by restricted zeolite mineralogy, absence of volcanic glass, and generally more advanced reconstitution· towards the base of the section, several examples of local disequilibrium are cited. However, several examples of local disequilibrium are cited. Study of heulandite structural group. There is a full range of Si/Al ratios between heulandite and clinoptilolite end members. Ca, Na, and K can replace each other extensively, especially in clinoptilolites. Therefore, a new classification is proposed for heulandite group minerals based on Si/Al ratios. The subdivisions are made: heulandite (Si/Al < 4.00) and clinoptilolitG (Si/Al > 4.00). The dominant exchangeable cation in the unit cell is placed as a suffix to the subdivision e.g. heulandite-Ca. If both loosely and tightly bound water are considered then + 0.6 H2O molecules are coordinated about divalent cations; and 3.2 + 0.5 molecules about monovalent cations in heulandite group minerals. The variation in density and refractive index of heulandite group minerals is largely a function of the variation in total water content. Optical orientation of crystals mounted in Lakeside 70 is length fast if Si/Al < 3.52 and length slow if Si/Al E 3.57. Refractive index is strongly influenced by the types of cations present. Comparison of calculated cell dimensions indicate (1) clinoptilolites typically have smaller a, c, and b parameters than heulandites (2) the area of the ac plane increases with increasing Al or divalent cation substitution; (3) b increases with increasing Mg substitution. Unit cell dimensions are given for two different contracted phases, phase I and phase B of four dehydrated heulandites. For heulandite from Cape Blomidon, Nova Scotia, the spacing of the (020) reflection of the untreated mineral is 8.970A and for phase B is 8.30-8.35A. The phases appear at temperatures as low as 202°C~ 3°. For 11 heulandites and clinoptilolitesthe initial change to phase I occurs at f 213* to 312*C + 3* after heating for 2 hours and cooling for 1 hour. Three types of thermal stability are recognized in the mineral group. Minerals with a sum of unit cell divalent cations equal to or greater than 1.87 contract after heating. Higher temperatures are required to contract samples with higher Si/Al ratios. Composition of the heulandite structural group zeolites can be estimated using optical, cell dimension, and thermal stability data. Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. Hokonui Hills Thesis description Number of pages, maps, CDs, etc. 2 v. (406 leaves) : illus., diagrs., maps (7 col. fold. in pocket) plates (1 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 1971Boles Creator An entity primarily responsible for making the resource Boles, James R. (James Richard), 1944- Date A point or period of time associated with an event in the lifecycle of the resource 1971 Title A name given to the resource Stratigraphy, petrology, mineralogy, and metamorphism of mainly Triassic rocks, Hokonui Hills, Southland, New Zealand Subject The topic of the resource Map Lithostratigraphy Metamorphic geology Structural geology Mesozoic volcanogenic sediment zeolite facies