Дисертації з теми "Original copies"
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Bergman, Malin, and Beatrice Dinu. "Original Copies." Thesis, KTH, Arkitektur, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-223235.
Повний текст джерелаHerbert, Flora. "L'estampe et ses transferts : gravures françaises et copies allemandes (1650-1750)." Thesis, Paris 4, 2017. http://www.theses.fr/2017PA040065.
Повний текст джерелаThis doctoral thesis presents a study of the phenomenon of print copying, study based on the production of German publishers and engravers in the second half of the seventeenth century and the first half of the following century. Some of the main producers of engravings in Germany after the end of the Thirty Years War, starting with the Küsel family in Augsburg, were very much involved in creating and publishing engraved copies. The French seventeenth century printing was a central element in the models used by these engravers. When these copies are placed in their historical, technical and artistic background, they enable us to address a different way of looking at the copying and publishing of pictures, compared withtoday. We shall, therefore, analyze three levels of transfers. The first one relates to the actual technique of the copyist who transfers the model onto an engraving plate. The second one focuses more specifically on the exchanges generated from one country to another. Finally, the third one raises the issue of how the desire to appropriate the original is transferred onto the copy. We shall thus place these phenomena of print copies in their respective backgrounds but also analyze what is implied by this practice, taking into account the role played by its audience
Michaud, Alyssa R. ""Copies without Originals": Manipulation, Mediation, and Mediatization in Performance and Recording Practices." Thèse, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/23605.
Повний текст джерелаMyers, Lynn B. "The origins and nature of the repressive coping style." Thesis, King's College London (University of London), 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263521.
Повний текст джерелаJoost, Maximilian. "Synthesis and original reactivity of copper and gold complexes : sigma-Bond coordination, oxidative addition, migratory insertion." Toulouse 3, 2014. http://thesesups.ups-tlse.fr/2413/.
Повний текст джерелаThe present work is a study concerning the coordination chemistry and reactivity of copper and gold complexes. Of particular interest was the elucidation of (i) the metal-mediated activation of s-bonds and (ii) the migratory insertion reaction. Both processes are of considerable importance in organometallic chemistry, but elusive for copper and gold. The first part of this manuscript is dedicated to the study of the coordination of s-SiH bonds to copper. By means of a chelate assistance approach, we synthesized copper complexes employing diphosphino-hydrosilane ligands (R2P(o-C6H4))2Si(R')H. This study allowed for the identification of a weak ?2-SiH coordination to copper that has been evidenced by experimental (NMR, IR, XRD) and computational (geometry optimization, NBO analysis) means. The s-SiH coordination is essentially dominated by donation of electron density from the hydrosilane moiety to copper, without significant backdonation. In the second part, we investigated the reactivity of silylgold(I) complexes towards unsaturated organic molecules. We showed that these complexes react with alkynes and allenes to yield (Beta-silyl)vinylgold complexes via migratory syn insertion into the gold-silicon bond. A mechanistic proposal consisting of a 2-step coordination insertion process was established for this transformation by means of a kinetic and computational study. In the third part, the intermolecular oxidative addition of s-SiSi, s-CC and s-CX (X=halogen) bonds with molecular gold(I) complexes was studied in detail. We showed that this reaction, usually considered to be impossible for gold, is actually highly favored, provided an adequate ligand is employed. Disilanes add to cationic monophosphine gold(I) complexes. However, the corresponding bis(silyl)gold(III) products are highly unstable. The use of bis(phosphine) gold(I) complexes, featuring a bidentate ligand with a small bite-angle, allowed for the first time for the oxidative addition of s-CC and s-CX bonds at gold(I) and proved key for the stabilization of the corresponding gold(III) products that were characterized by spectroscopic and structural means. These results shed light on an unexpected reactivity pattern of gold complexes and may be an entry point to 2-electron redox transformations mediated by this metal, opening up new perspectives in gold catalysis
Helal, Ibrahim Fahmy. "Les origines pharaoniques du mariage copte : contribution à l'histoire du droit matrimonial égyptien." Perpignan, 1995. http://www.theses.fr/1995PERP0197.
Повний текст джерелаThe egyptian marriage, is still the same, since the pharaonic times, through the ancient, the middle, the new kingdoms and the late period, also through the persian, ptolmaic, roman and arabic periode. . . Till nowadays, between the copts descendants of pharaos, upon the base of "unity of that people". This marriage was and still a sacred union for the spirit and corpus, between a man and a woman held in front of the holy of holies, by writing and by the hand of a notary priest for forming a family in the presence of witnesses and relatives
Banks, D. A. "On the origin of the Tynagh lead + zinc + copper deposit, Ireland." Thesis, University of Strathclyde, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382386.
Повний текст джерелаMcGowan, Ross. "The origin of the Nchanga copper-cobalt deposits of the Zambian copperbelt." Thesis, University of Southampton, 2003. https://eprints.soton.ac.uk/402419/.
Повний текст джерелаHafer, Mark R. "Origin and controls of deposition of the Wheal Hughes and Poona copper deposits, Moonta, South Australia /." Title page, table of contents and abstract only, 1991. http://web4.library.adelaide.edu.au/thesis/09SB/09sbh138.pdf.
Повний текст джерелаTwo charts in pocket. National grid reference: Maitland sheet 1-53/12 (1:253 440). Includes bibliographical references.
Chen, Wei, and 陈伟. "Origin and tectonic environment of the Lala Fe-Cu-(Mo, REE) deposit, Sichuan province, SW China." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hdl.handle.net/10722/197093.
Повний текст джерелаpublished_or_final_version
Earth Sciences
Doctoral
Doctor of Philosophy
Carraro, Natasha Olga Norina. "Looking Back and Moving Forward: A Meta-Analytic Review and Two Original Studies Examining the Role of Action Planning and Coping Planning in Promoting Physical Activity Behaviour." Thesis, Université d'Ottawa / University of Ottawa, 2015. http://hdl.handle.net/10393/32096.
Повний текст джерелаSchroeder, Janina Fee [Verfasser]. "Relationship Conflicts in Changing Business Families in India and Germany : Origins, Fields, and Coping Strategies / Janina Fee Schroeder." Göttingen : Vandenhoeck & Ruprecht, V&R unipress, 2017. http://d-nb.info/1140503138/34.
Повний текст джерелаCaromba, Laurence Joseph. "The origins of liberal conservatism : Edmund Burke, Adam Smith, and the art of coping with a complex society." Diss., University of Pretoria, 2012. http://hdl.handle.net/2263/25682.
Повний текст джерелаDissertation (MA)--University of Pretoria, 2012.
Political Sciences
unrestricted
Allaire, Ted D., R. Lillie Macias, and Julia L. Perilla. "Effects of Country of Origin and Cognitive Development on Psychological Adjustment and Family Cohesion of Latino Youth Witnesses of Domestic Violence." Digital Archive @ GSU, 2012. http://digitalarchive.gsu.edu/honors_theses/11.
Повний текст джерелаHall, Jonathan. "Migration and Perceptions of War : Simultaneous Surveys in Countries of Origin and Settlement." Doctoral thesis, Uppsala universitet, Institutionen för freds- och konfliktforskning, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-198766.
Повний текст джерелаHudgins, Carter Christian. "Elizabethan industries in Jacobean Virginia? : an examination of the industrial origins and metallurgical functions of scrap copper at early Jamestown (c. 1607 - 1610)." Thesis, Royal Holloway, University of London, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.607168.
Повний текст джерелаTomlinson, David Harris. "Nature and Origin of Fissure Ore at the Porphyry-Epithermal Transition Zone of the Bingham Canyon Porphyry Cu-Au-Mo Deposit, Utah." BYU ScholarsArchive, 2019. https://scholarsarchive.byu.edu/etd/7544.
Повний текст джерелаTisseraud, Céline. "Origine et impact de la synergie Cu-ZnO sur l'hydrogénation catalytique du CO2 en méthanol." Thesis, Poitiers, 2016. http://www.theses.fr/2016POIT2295/document.
Повний текст джерелаThe catalytic CO2 hydrogenation is considered to be one of the most promising methods for methanol production. This synthesis, often accompanied by a CO formation, had been the subject of many studies in the literature. However, the results obtained on Cu and ZnO based catalysts demonstrated that the reaction is not as simple as it appear to be. There is still a lot of controversies and interrogations concerning the nature of the active sites and the different reactional steps involved during the reaction. The objective of this work is a better understanding of the nature of the active sites and their role on CO2 an H2 activation. A study on model catalysts (mechanical mixtures and materials prepared by coprecipitation) allowed to demonstrate that the synergetic effect between Cu and ZnO linked to a migration phenomenon. This work showed that the methanol production was closely linked to the CuxZn(1-x)Oy oxide phase creation (with oxygen vacancies) induced by a Kirkendall effect on Cu-ZnO interface, thereby promoting the hydrogen spillover. Different mathematical models were developed to determine the concentration of contacts between Cu and ZnO. The results obtained demonstrated that it is possible to directly correlate the catalyst’s activity with the concentration of contacts between Cu and ZnO, which in turn allowed predicting optimal catalyst chemical composition for a particular design of a material. The full expertise of the design-activity relationship allowed the development of Cu-ZnO core-shell type materials with a 100% selective to methanol
ANTHONY, ELIZABETH YOUNGBLOOD. "GEOCHEMICAL EVIDENCE FOR CRUSTAL MELTING IN THE ORIGIN OF THE IGNEOUS SUITE AT THE SIERRITA PORPHYRY COPPER DEPOSIT, SOUTHEASTERN ARIZONA (UNITED STATES, STRONTIUM, PIMA COUNTY, TRACE ELEMENTS, NEODYMIUM)." Diss., The University of Arizona, 1986. http://hdl.handle.net/10150/188173.
Повний текст джерелаButterworth, Andrew D. "The utilisation of layered hydroxysalts in the separation, immobilisation and long term storage of long-lived radio-anions of nuclear power legacy waste origin." Thesis, Loughborough University, 2013. https://dspace.lboro.ac.uk/2134/13639.
Повний текст джерелаMok, Sog Yee [Verfasser]. "Why Do Turkish-Origin Students Underperform in Germany? : Investigating the Effects of Ethnic Composition in Classrooms and Negative Stereotypes on Performance and Coping Strategies / Sog Yee Mok." Konstanz : Bibliothek der Universität Konstanz, 2015. http://d-nb.info/1114886513/34.
Повний текст джерелаKarila, Delphine. "Etude de la réaction d’esters ω-insaturés médiée par l’iode hypervalent et catalysée par le cuivre : développement d’une nouvelle réaction d’aminolactonisation. Application à la synthèse d’hétérocycles originaux fonctionnalisés". Thesis, Paris 11, 2011. http://www.theses.fr/2011PA112228.
Повний текст джерелаThe reaction of an olefin with a nitrene generated from a phenyliminoiodane in the presence of a copper catalyst allows the direct formation of an aziridine.The versatility of this reaction was improved by a one-pot procedure developed in our laboratory mediated by iodosylbenzene and a sulfonamide and by the use of Ses iminoiodane. The first part of this thesis was devoted to the study of the unexpected reaction observed with ω-unsaturated esters under aziridination conditions in which an intramolecular ring-opening of the aziridine by the carbonyl oxygen of the ester function is observed providing a 5,5-disubstituted butyrolactone. This new reaction named aminolactonization reaction has been used on various styrene-derived 1-propanoates or butanoates for the synthesis of 5,5-disubstituted butyrolactones in high yields. Probably due to hindrance effects, o-bromo and o-chloro compounds selectively gave the aziridination product. The reactivity of these compounds, under acidic conditions, has been investigated and various ortho halogenated γ-lactones have been obtained in good yields. Finally, the field of application of this methodology has been extended to the formation of gem-disubstituted heterocycles starting from, for example, an olefinic alcohol and an unsaturated carbamate. The second part of this work was dedicated to the elaboration of functionalized heterocycles starting from aminolactonization products. To this end, the reactivity of the aromatic ring has been studied to give access to new scaffolds such as spiroindolines, gem-3,3-disubstituted indolines and indolinobutyrolactones in good yields. Furthermore, the reactivity of such γ-lactones allowed us to synthesize new interesting scaffolds such as benzospirolactone or spirohexahydropyrroloindole. The latter has been used as an intermediate for the synthesis of a spirolactone analogue of physostigmine used for the treatment of Alzheimer’s disease.Finally, this methodology was further exploited for an approach to the total synthesis of Fiscalin A, focusing on the C-2 functionalization of the indoline ring. The results are discussed in the third part of this work
Reinaud, Olivia. "Nouvelles methodes d'alkylation regioselective d'orthoquinones originales : synthese de differentes classes de produits naturels quinoniques." Paris 6, 1987. http://www.theses.fr/1987PA066200.
Повний текст джерелаWanhainen, Christina. "On the origin and evolution of the palaeoproterozoic Aitik Cu-Au-Ag deposit, northern Sweden : a porphyry copper-gold ore, modified by multistage metamorphic-deformational, magmatic-hydrothermal, and IOCG-mineralizing events." Doctoral thesis, Luleå, 2005. http://epubl.luth.se/1402-1544/2005/36.
Повний текст джерелаEl, Marzouki Abdelilah. "Propriétés physicochimiques de complexes du cuivre : modèles synthétiques de la superoxyde dismutase." Grenoble 1, 1993. http://www.theses.fr/1993GRE10140.
Повний текст джерелаWeiss, Jean. "Synthese de (2) et (3)-catenands, coordinats a anneaux entrelaces." Université Louis Pasteur (Strasbourg) (1971-2008), 1986. http://www.theses.fr/1986STR13110.
Повний текст джерелаMarzak, Saïd. "Complexes du cuivre (i) construits sur le fragment (ms::(4))**(2-) (m=mo,w) : role du ligand thiocyanate dans l'edification de composes heterometalliques a structure infinie." Paris 6, 1988. http://www.theses.fr/1988PA066401.
Повний текст джерелаHaouas, Ammar. "Cinetique d'oxydation du monoxyde de carbone sur des catalyseurs cuo sno::(2) : etude physicochimique et simulation informatique." Paris 6, 1988. http://www.theses.fr/1988PA066654.
Повний текст джерелаXiao, Lan. "Etude physico-chimique de la complexation de divers ions metalliques (cu**(2+), ni**(2+) et co**(2+)) avec des dipeptides l-l contenant des chaines laterales non-coordinantes." Paris 7, 1988. http://www.theses.fr/1988PA077170.
Повний текст джерелаFaulmann, Christophe. "Conducteurs derives de metaux de transition : complexes moleculaires, polymeres, oxydes de cuivre." Toulouse 3, 1988. http://www.theses.fr/1988TOU30160.
Повний текст джерелаChambron, Jean-Claude. "Synthese et etude de complexes du cuivre (i) et du ruthenium (ii) en vue de la separation intramoleculaire des charges photoinduites." Université Louis Pasteur (Strasbourg) (1971-2008), 1986. http://www.theses.fr/1986STR13092.
Повний текст джерелаKhan, Mustayeen Ahmed. "Stabilite, spectres electroniques et structures des halogenocuprates en milieu protique." Université Louis Pasteur (Strasbourg) (1971-2008), 1988. http://www.theses.fr/1988STR13059.
Повний текст джерелаRIFI, EL HOUSSEINE. "Extraction metallique par des gels hydrophobes." Université Louis Pasteur (Strasbourg) (1971-2008), 1988. http://www.theses.fr/1988STR13158.
Повний текст джерелаPernot, Etienne. "Relations entre synthèse, structure et conductivité dans Bi4V2O11 et ses substitués (Cu, Ni)." Université Joseph Fourier (Grenoble), 1994. http://www.theses.fr/1994GRE10178.
Повний текст джерелаDelavaux, Béatrice. "Complexes heterobimetalliques hydrures (ru-m) (m=rh,ir,cu) a ligands bisdiphenylphosphinomethane : synthese et reactivite." Toulouse 3, 1986. http://www.theses.fr/1986TOU30078.
Повний текст джерелаMetabanzoulou, Jean-Pierre. "Mecanisme de la complexation de l'ion uo : :(2)**(2+) par des di(acyl-4 pyrazolones-5), des ethers-couronnes, des diazapolyoxamacrocycles et des ligands apparentes." Université Louis Pasteur (Strasbourg) (1971-2008), 1988. http://www.theses.fr/1988STR13146.
Повний текст джерелаDiantouba, Bertin Aimé. "Effets structuraux des acyl-4-pyrazolones-5 dans l'extraction liquide-liquide des cations metalliques divalents." Université Louis Pasteur (Strasbourg) (1971-2008), 1988. http://www.theses.fr/1988STR13093.
Повний текст джерелаOpagiste, Christine. "Synthèse et étude des propriétés magnétiques des composés supraconducteurs surdopés à base de thallium." Université Joseph Fourier (Grenoble), 1994. http://www.theses.fr/1994GRE10097.
Повний текст джерелаMarques, Elizabete. "Proprietes complexantes de nouveaux recepteurs moleculaires : catenands et calixarenes fonctionnalises." Université Louis Pasteur (Strasbourg) (1971-2008), 1988. http://www.theses.fr/1988STR13105.
Повний текст джерелаNafis, Mohammed. "Etude spectroscopique de l'hypericine et de ses complexes métalliques en relation avec leur activité photodynamique." Grenoble 1, 1993. http://www.theses.fr/1993GRE10117.
Повний текст джерелаNegrich, René Catherine. "Philosophy of art forgeries: the aesthetic difference between originals and copies." Thesis, 2011. http://hdl.handle.net/1828/3777.
Повний текст джерелаGraduate
Grgeta, Edi. "Copies and originals in a horizontally and vertically differentiated market with habit and quality differences /." 2005. http://www.gbv.de/dms/zbw/547155735.pdf.
Повний текст джерелаNixon, Richard L. "Origins, distribution, and ecological significance of marine microbial copper ligands." Thesis, 2020. http://hdl.handle.net/1828/12085.
Повний текст джерелаGraduate
LIN, YU-WEI, and 林裕偉. "A Study On The Relationships Among Original Family Parenting Styles, Regulatory Focus Theory And Marital Conflict Coping Strategies." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/aws4gb.
Повний текст джерела大葉大學
觀光餐旅碩士在職學位學程
107
When the long-term marriages end in divorce, we could know that it’s hard to maintain a happy marriage. In Asia, family of origin “intervention” is everywhere. All the factors from original family make adjustments in a marriage relationship. People in Marrige need to use great effort to accommodate each other. When they grew up in different families, they would have different childhood experiences, characteristics. Not to mention the coping strategies of conflicts. Therefore, the parenting style of original family play a considerable role in the marriage. The purpose of this research was to examine the relationships of original parenting styles, regulatory focus theory and marital conflict coping strategies. A total of 317 questionnaires were received out of 330 (recovery rate was 96%), including 25 invalid questionnaires. In sum, there were 292 valid questionnaires. Data were analyzed through reliability analysis, descriptive statistics and chi-square test. Researchs have showed that parenting style has a significant influence on regulatory focus theory and marital conflict coping strategies. Therefore, this study used regulatory focus as mediation variable to explore how parenting style influences marital conflict strategies. These results showed that original family style will affect regulatory foucus (in which “authoritarian” is asscociated with “prevention” and “authoritative” is asscociated with “promotion”). Furthermore, promotion focused people tend to adopt positive marital conflict coping strategies; howerver, prevention foucused people tend to adopt negative ones. And we also found people grew up in permmissive or authoritarian parenting style who tend to adopt negative marital conflict coping strategies; people grow up in authoritative parenting style who tend to adopt positive strategies if face marital conflict.
de, Saint-Exupéry Gilles. "Le document technologique original dans le droit de la preuve au Québec." Thèse, 2012. http://hdl.handle.net/1866/9043.
Повний текст джерелаThe adoption, in 2001, of the Act to Establish a Legal Framework for Information Technology (the Act) allowed the establishment of a legal framework facilitating the integration of Information Technology in law. More specifically in law of evidence, this allowed for the recognition of the technology-based document as evidence. In this context, it was necessary to adapt certain sections of the Civil Code of Québec and, thus, certain rules, among which the best evidence rule, set forth in Section 2860 C.C.Q. Until the Act, this rule relied on the original, a concept specific to the paper medium; consequently, it became necessary to find an equivalent for the technology-based document. This was done by Section 12 of the Act, which sets out the technology-based original’s characteristics. We will look into this concept’s origins and rationale, before analysing Section 12 of the Act, which addresses the original in a technological form. We will then examine the reproductions’ place in the technological context, and ascertain their growing importance beside that of the original document’s, as the means of reproduction continuoulsy improved.
HUI-CHEN, HSU, and 許惠貞. "Marital Conflict Coping Strategies,The Coparenting in Family of Origin and Mothers'Coparenting." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/56124921334017182844.
Повний текст джерела輔仁大學
兒童與家庭學系碩士班
95
Abstracts Marital Conflict Coping Strategies, Coparenting in Family of Origin and Mothers’ Coparenting The purposes of this study are to investigate current situation of and the relationships among marital conflict coping strategies, coparenting in family of origin and mothers’ coparenting. The research subjects are 302 non-divorced mothers of children in grades 5 to 6 who live in Taipei County, and whose biological parents were alive when they were in grades 5 to 6. There are several findings in the present study. First of all, mothers perceive relative positive spousal coparenting of “cooperative support” and “relationship improvement”. Secondly, coping strategies of “positive response” and “looking for supports” are significantly related to mothers’ coparenting of “cooperative support” and “relationship improvement”. And coping strategies of “argument”, “introspective self-blame”, “self-interest” and “avoidance” are positively related to mothers’ coparenting of “criticizing resistance”. Thirdly, concerning the relationship of coparenting in family of origin and mothers’ coparenting, significant positive correlations have been shown between coparenting in family of origin of “supportive cooperation” of and mothers’ coparenting of “criticizing resistance”, “cooperative support”, and “relationship improvement” of. However, mothers agree that coparenting in family of origin of “criticizing resistance” shows no significant correlations with mothers’ coparenting of “criticizing resistance”, “cooperative support”, and “relationship improvement”. Finally, the mothers who adopt the “positive response” and “argument” in their marital conflict coping strategies show significant effects on their coparenting of “criticizing resistance”, “cooperative support”, and “relationship improvement”. Key words: marital conflict coping strategies, coparenting in family of origin, coparenting
Schiller, Jeffrey Christopher. "Structural geology, metamorphism and origin of the Kanmantoo Copper deposit, South Australia." Thesis, 2000. http://hdl.handle.net/2440/19902.
Повний текст джерелаIncludes copies of articles co-authored by the author during the preparation of this thesis as appendix 7.
14 maps (some folded, some col.); inserted in back pocket.
Includes bibliographical references (leaves 242-264).
System requirements for accompanying CD-ROM: Macintosh of IBM compatible computer. Other requirements: Adobe Acrobat Reader.
[15], 264 leaves : ill. (some col.), maps ; 30 cm. + 1 computer optical disk (4 3/4 in.)
On the basis of the present study it is concluded that there is no firm evidence that the bulk of the mineralisation is pre-metamorphic, although the possibility has not been excluded.
Thesis (Ph.D.) -- University of Adelaide, Dept. of Geology and Geophysics, 2001
Chandra, Manabendra. "Probing The Origin Of Second Harmonic Generation From Copper Nanoparticles In Solution By Hyper-Rayleigh Scattering." Thesis, 2008. http://hdl.handle.net/2005/814.
Повний текст джерелаSchiller, Jeffrey Christopher. "Structural geology, metamorphism and origin of the Kanmantoo Copper deposit, South Australia / by Jeffrey Christopher Schiller." 2000. http://hdl.handle.net/2440/19902.
Повний текст джерелаIncludes copies of articles co-authored by the author during the preparation of this thesis as appendix 7.
14 maps (some folded, some col.); inserted in back pocket.
Includes bibliographical references (leaves 242-264).
System requirements for accompanying CD-ROM: Macintosh of IBM compatible computer. Other requirements: Adobe Acrobat Reader.
[15], 264 leaves : ill. (some col.), maps ; 30 cm. + 1 computer optical disk (4 3/4 in.)
Title page, contents and abstract only. The complete thesis in print form is available from the University Library.
On the basis of the present study it is concluded that there is no firm evidence that the bulk of the mineralisation is pre-metamorphic, although the possibility has not been excluded.
Thesis (Ph.D.)--Adelaide University, Dept. of Geology and Geophysics, 2001
Hafer, M. R. "Origin and controls of deposition of the Wheal Hughes and Poona copper deposits, Moonta, South Australia." Thesis, 1991. http://hdl.handle.net/2440/86976.
Повний текст джерелаThe Wheal Hughes and Poona mines are situated within the Moonta-Wallaroo copper district on the NW region of Yorke Peninsula approximately 150 km NW of Adelaide, S.A. Copper mineralisation is hosted by the Moonta Porphyry, a rhyolite/rhyodacite feldspar porphyry of Early Proterozoic age. The Wheal Hughes and Poona lodes are structurally controlled tabular, en echelon and sheeted fissure veins, which strike 040-050 and have a 45deg to 60deg westerly dip. Two distinct groups of mineralisation are found to occur at Wheal Hughes: (1) the NE Leighton's lode which closely resembles Poona and is typical of Moonta lodes, and (2) the SW Wheal Hughes lode which is unique to the region, in consisting of a series of parallel veins in close proximity and having extensive wall rock alteration. Mineralisation consists predominantly of chalcopyrite and pyrite with minor components of magnetite, hematite, bornite, marcasite, carrollite, molybdenite and gold. A generic model for the mineralisation at Wheal Hughes and Poona is proposed from fluid inclusion studies and petrographic studies, and sulphur isotope, chlorite and sericite analyses together with thermodynamic modelling. Magmatic hydrothermal fluids enriched in metals migrated towards the surface via fractures, which were possibly formed from the emplacement and subsequent cooling of underlying Proterozoic granites. These fractures provided pathways for the migration of hydrothermal fluids as well as sites for the deposition of the ore bodies. Metal deposition occurred as a consequence of a two step boiling process during fluid ascent along fracture conduits, which involved the separation of gases (+ steam) from the liquid phase. Condensation and oxidation of the gas phase produced acid waters that triggered argillic alteration of the country rocks. Two possible heat mechanisms generated the hydrothermal system in the Moonta district; the disruption of the geothermal gradient by the intrusion of an igneous body at depth or a dilatancy/fluid diffusion process. In either case, the heat source generated a hydrothermal system which focussed mineralising fluids into dilatant fractures, effectively localising the mineralisation.
Thesis (B.Sc.(Hons)) -- University of Adelaide, School of Earth and Environmental Sciences, 1991