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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

A regional geophysical study of the Broken Hill block, N.S.W., Australia / David J. Isles

Isles, D. J. January 1983 (has links)
Microfiche and maps (numbered 1-7) in pocket / Includes bibliography (6 unnumbered leaves) / 109, [84] leaves (some folded) : ill., maps (some col.) ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, Dept. of Economic Geology, 1984
2

Characterization of Fe-rich skarns and fluorapatite-bearing magnetite occurrences at the Zinkgruvan Zn-Pb-Ag and Cu deposit, Bergslagen, Sweden

Ivarsson, Filip January 2019 (has links)
Zinkgruvan is a stratiform Zn-Pb-Ag and Cu sulphide deposit hosted by Paleoproterozoic strata in southern Bergslagen, Sweden. The deposit underwent medium-high grade regional metamorphism during the Svecokarelian orogeny, including partial melting of the host succession. Subordinate zones of semi-massive to massive magnetite and Fe-rich skarns occur in marble stratigraphically below the stratiform Zn-Pb-Ag ore but have so far not been described in detail in the scientific literature. This thesis presents results from detailed geological drill core logging, light optical microscopy (LOM) and scanning electron microscopy (SEM), which have been integrated with results from electron microprobe analysis (FE-EMPA) and whole-rock lithogeochemical analysis to provide a comprehensive description of the magnetite mineralization. Samples from the formerly mined magnetite deposits Västerby, Garpa and Åmme - distal to Zinkgruvan - have also been studied to allow for a comparison. The combined dataset has been used to 1) discuss the genesis of the magnetite mineralizations, including their relationship to base metal sulphide mineralization, and 2) evaluate potential vectors to Zn-Pb-Ag and Cu mineralization based on variations in the magnetite deposits. The semi-massive to massive magnetite, adjacent and associated Fe-rich skarn at Zinkgruvan are located in the stratigraphic upper part of the marble host. Three different varieties of magnetite mineralization can be defined: 1) semi-massive to massive magnetite mineralization in marble, 2) magnetite-bearing veins and 3) retrograde magnetite after olivine. Detailed optical microscopy has revealed a positive spatial correlation between aluminium spinel, apatite, magnetite and graphite. Semi-massive to massive magnetite mineralization at Zinkgruvan is enriched in P2O5, ΣREELa-Lu and Mn relative to a carbonate precursor. A positive correlation exists between P2O5 and ∑REELa-Lu, suggesting apatite and monazite are the primary REE-bearing minerals. The fact that the samples with highest P2O5 and ∑REELa-Lu are all Fe-rich rocks suggest the enrichment of the latter is related to the event which formed the Fe mineralization. Magnetite mineralization from the historic iron mines NW of Zinkgruvan share several key attributes with magnetite mineralization at Zinkgruvan. These include: 1) magnetite is the only iron oxide, 2) lithological and mineralogical similarities, including spatial association with marble, 3) equally high whole-rock Fe content, 4) equally high Mn (1-4 wt.% MnO), 5) equally high Eu anomalies (Eu/Eu* = 1.1- 2.8, avg. 1.75), and 6) local presence of sphalerite mineralization. Bending of the tectonic foliation from c. E-W to NW in the western part of Zinkgruvan suggest these magnetite mineralizations may be located along the same trend as those at Zinkgruvan. The normal calc-silicate mineralogy in Zinkgruvan marble (e.g. diopside, forsterite, phlogopite) can be explained by prograde regional metamorphic reactions between silicates and dolomite or calcite in impure carbonate rocks with a variable content of detrital siliciclastic and volcaniclastic material. However, the stratabound magnetite mineralization and associated Fe-rich skarns cannot be fully accounted for by this model. It is plausible that the Fe-rich skarns can be explained by similar reactions but involving more Fe-rich carbonates (ferrodolomite, ankerite, siderite). In the absence of quartz, siderite is known to thermally decompose into magnetite and graphite at temperatures above 465° C, whereby siderite-rich rocks may have been precursor to the semi-massive to massive magnetite mineralization. A recent genetic model suggests that the ore-forming fluids which formed Zinkgruvan where similar to those which formed McArthur-type SEDEX deposits. The presented results are consistent with this model, since e.g. siderite is a common alteration mineral in alteration envelopes to such deposits. Hence, magnetite mineralization, Zn-Pb-Ag and Cu-ore may all be related to the same pre-metamorphic hydrothermal system. The current genetic model places the magnetite mineralization at Zinkgruvan proximal to a fossil hydrothermal vent zone (the Burkland discontinuity). It is plausible that the magnetite mineralization mined at surface lay along the northern continuation of the Burkland discontinuity. Based on the assumption that the Burkland Cu-mineralization is most proximal and the old iron mines at Åmme are most distal along this structure, variations in whole-rock lithogeochemistry, mineral chemistry and mineralogy have been used to define nine vectors to economic Zn-Pb-Ag and Cu ore as is mined at Zinkgruvan.
3

Geochemical studies of base and noble metal compounds

Elvy, Shane Brett, University of Western Sydney, Faculty of Science and Technology, School of Science January 1998 (has links)
The research in this study consisted of two strands. The first consists of noble metal geochemical studies and the second involves base metal supergene processes. The precious metal geochemistry carried out in the scope of this thesis involves palladium and tellurium geochemistry, surface chemistry studies of palladium-bismuth- and tellarium-bearing synthetic minerals, and electrochemical determinations of the inactivity of a variety of primary telluride minerals and alloys. Two new minerals have been found in deposits near Broken Hill, N.S.W. The second section of the research concerns itself with supergene processes in two copper-bearing orebodies. This was carried out by designing a method utilising solution equilibria to predict whether secondary mineral species are precipitating or dissolving in the supergene zones of the Girilambone, N.S.W. and North Mungana, Qld. orebodies. Results found could be used to develop new geochemical prospecting methods in the regions discussed. / Doctor of Philosophy (PhD)
4

Foot soldiers for capital: the influence of RSL racism on interwar industrial relations in Kalgoorlie and Broken Hill

Gregson, Sarah, School of Industrial Relations & Organisational Behaviour, UNSW January 2003 (has links)
The historiography of Australian racism has principally "blamed" the labour movement for the existence of the White Australia policy and racist responses to the presence of migrant workers. This study argues that the motivations behind ruling class agitation for the White Australia policy have never been satisfactorily analysed. To address this omission, the role of the Returned and Services League of Australia (RSL) in race relations is examined. As an elite-dominated, cross-class organisation with links to every section of society, it is argued that the RSL was a significant agitator for migrant exclusion and white unity in the interwar period. The thesis employs case studies, oral history and qualitative assessment of various written sources, such as newspapers, archival records and secondary material, in order to plot the dynamics of racist ideology in two major mining centres in the interwar period. The results suggest that, although labour organisations were influenced by racist ideas and frequently protested against the presence of migrant workers, it was also true that mining employers had a material interest in sowing racial division in the workplaces they controlled. The study concludes that labour movement responses to migrant labour incorporated a range of different strategies, from demands for racist exclusion to moves towards international solidarity. It also reveals examples of local and migrant workers living, working, playing and striking together in ways that contradict the dominant view of perpetual tension between workers of different nationalities. Lastly, the case studies demonstrate that local employers actively encouraged racial division in the workplace as a bulwark against industrial militancy.
5

Factors affecting the realisation of prior expectations amongst British migrants coming to Australia, 1978

Hornsby, Peter E. January 1978 (has links)
2 v. : col., photos., tables ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, Dept. of Psychology, 1979
6

The design and operation of a new ventilation system at the Zinc Corporation Limited and the new Broken Hill Consolidated Limited.

Madigan, Russel Tullie. January 1900 (has links) (PDF)
Thesis (M.E.) -- University of Adelaide, 1956. / Typewritten copy.
7

A triangulation of relationships: Godfrey Wilson, Zacharia Mawere and their Bemba informants in Broken Hill, Northern Rhodesia, 1938–1941

Mbewe, Mary January 2015 (has links)
Magister Artium - MA / The rich corpus of postcolonial scholarly engagement on indigenous intermediaries, interpreters, clerks and assistants has a made a strong argument for the active participation of African agents in social scientific knowledge production on Africa. This literature has highlighted the complex and negotiated nature of fieldwork in African anthropology. While this literature has begun to deepen our understanding of the knowledge work of anthropologists and their research assistants, it has not adequately explored the relationship between anthropologists and informants in what one scholar has recently called ‘a triangulation of relationships’ between the anthropologist, the assistant and the informant. This research project proposes to explore these relationships in a detailed case study: that of the British anthropologist Godfrey Wilson (1908–1944), his interpreter Zachariah Mawere, and three primary informants, during three years of pioneering research into the effects of migrant labour at Broken Hill, Northern Rhodesia (Zambia) between 1938 and 1941. Using a close textual reading and detailed analysis of Wilsons Bemba and English fieldnotes held in the Godfrey and Monica Wilson collection at the University of Cape Town’s African Studies Library, the study will apply a micro-historical and biographical approach. It will seek to reconstruct the biographies and anthropological contributions of one interpreter and three central Bemba informants in order to explore the micro-politics of knowledge production in African anthropology.
8

Factors affecting the realisation of prior expectations amongst British migrants coming to Australia, 1978.

Hornsby, Peter E. January 1978 (has links) (PDF)
Thesis (Ph.D. 1979) from the Department of Physchology, University of Adelaide. / Includes bibliographical references.
9

Developing a tectonic framework for the Southern Curnamona Cu - Au Province : geochemical and radiogenic isotope applications

Rutherford, Lachlan Stuart January 2006 (has links)
"Two independent geochronological techniques specifically targeting post-kinematic or late-stage growth of kyanite, staurolite and late-stage garnet in the southern Curnamona Province has found that these minerals grew during the Delamerian Orogeny (~530-500 Ma). Prograde metamorphism during the Delamerian Orogeny attained kyanite-staurolite-garnet grade (amphibolite-facies). Previous interpretations of an anticlockwise P-T path for the Olarian Orogeny need revising, as these interpretations have been shown in this study to be based on textural relationships spanning ~1100 million years. This highlights the importance of in situ geochronological techniques in defining robust P-T-t paths for a region." --p. 121 of source document. / Thesis (Ph.D.)--School of Earth and Environmental Sciences, 2006.
10

Mining in the settler dominions : a comparative study of the industry in three communities from the 1880s to the First World War

Mouat, Jeremy January 1988 (has links)
This dissertation examines the evolution of the mining industry in three British dominions during the late nineteenth and early twentieth centuries. Adopting a case study approach, it describes the establishment and growth of mining in Rossland, British Columbia; Broken Hill, New South Wales; and Waihi, New Zealand. Separate chapters trace developments in each area, focussing on the emergence of organised labour, the growth of mining companies and the sophistication of mining operations. These underline the need to consider diverse themes, maintaining that the mining industry's pattern of growth can be understood only by adopting such a broad approach. Following the three case studies, the final chapters of the dissertation offer a comparative analysis of Rossland, Waihi and Broken Hill. The study emphasises the similarities of these three communities, especially the cycle of growth, and identifies a crucial common denominator. Despite differences in climate, in the type and nature of the ore deposit and in the scale of mining activity, all three areas experienced a common trajectory of initial boom followed by subsequent retrenchment. The changing character of the resource base forced this fundamental alteration of productive relations. In each region, the mineral content of the ore declined as the mines went deeper. In addition, with depth the ore tended to become more difficult to treat. Faced with a decline in the value of the product of their mines, companies had to adopt sweeping changes in order to maintain profitable operations. This re-structuring was accomplished in a variety of ways, but the most significant factors, common to Rossland, Broken Hill and Waihi, were the heightened importance of applied science and economies of scale. Both developments underlined the growing importance of the mining engineer and technological innovations, principally in milling and smelting operations. In addition, new non-selective extractive techniques reduced the significance of skilled underground labour. The re-structuring of the industry not only had similar causes but also had a similar effect. The comparative chapter on labour relations, for example, argues that these managerial initiatives were closely associated with militant episodes in each community. While the leading companies in Rossland, Waihi and Broken Hill successfully reduced their working costs, they all faced the same ultimate end. Their long-term success or failure reflected the skill with which they coped with the inevitable depletion of their ore body. The common experience of Rossland, Waihi and Broken Hill demonstrates the importance of placing colonial development within a larger context. Regional historians should make greater use of the comparative approach, rather than continuing to focus on the unique and the particular. / Arts, Faculty of / History, Department of / Graduate

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