Dissertations / Theses on the topic 'Porphir'
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Lecerf, Adrien. "Ordre et variation : essai sur le système de Jamblique." Thesis, Paris, EPHE, 2015. http://www.theses.fr/2015EPHE5071.
Full textThis thesis strives to provide modern research with a synthesis of the system of Iamblichus of Chalcis, an important figure in the development of later Greek metaphysics. It reconstructs in turn his psychology, his hierarchy of being and some of his most basic concepts and philosophical laws, with a stress on the continuity between Plotinus, founder of the Neoplatonic school, and the beginnings of the school of Athens. The whole of Iamblichus’ body of work is exploited, as well as the 800 fragments and testimonia on his life and doctrine handed down to us by later authors. Influences received are analysed and set in context: Plotinus’ and Porphyry’s Neoplatonism, which provides the general levels of reality which Iamblichus tried to analyse and enrich; Middle Platonism, whose topics are debated in Neoplatonism; Aristotelianism, which accounts for a dynamic conception of the human soul and a hierarchy of cognitive powers beginning with the transcendent Intellect; Pythagoreanism, which allows Iamblichus to depict mathematics as a universal language, able to take the mark of all parts of philosophy. By the scope of his work and the originality and neatness of the solutions he provided to problems which nascent Neoplatonism had to confront, Iamblichus is able to create a powerful synthesis which acts as a doctrinal basis for the later schools of Athens and Alexandria: it is profoundly representative of a theocentric era, in which human soul is but a derived principle that has to keep its place in the grand scheme of being. It is a metaphysics of unity, founded on the dual dynamic of order and variation
Hannach, Gabriela. "Phenotypic plasticity in the red alga Porphyra abbottae : environmental factors influencing light harvesting ability /." Thesis, Connect to this title online; UW restricted, 1990. http://hdl.handle.net/1773/5210.
Full textLi, Yang. "Geochronology and fluid evolution of the Qulong porphyry system : implications for porphyry deposit formation." Thesis, Durham University, 2016. http://etheses.dur.ac.uk/11869/.
Full textPizarro, Martínez Héctor Orlando. "Les traceurs minéralogiques comme indicateurs de porphyres cuprifères dans les remplissages sédimentaires des bassins adjacents, désert d'Atacama, Chili." Thesis, Toulouse 3, 2019. http://www.theses.fr/2019TOU30105.
Full textPorphyry copper deposits (PCDs) are linked to calk-alkaline magmatism produced in a convergent tectonic margin and resulted from the circulation of hydrothermal fluids derived from oxidized and water rich felsic magmas emplaced at shallow depths. During the evolution of the magmatic and hydrothermal systems, the fluid-rock interaction generates typical hydrothermal alteration minerals and can also modify or generates accessories minerals with different properties that can be associated at each stage of the evolution of the system, which could be distinguished by the physico and geochemical characteristics of the inherited accessory minerals (zircon), the modified minerals (apatite) or the newly formed minerals (Fe-Ti oxides). In the Atacama Desert hydrographic basins exposed along the western forearc are filled by gravel deposits which were derived from the erosion of the Domeyko Cordillera in response to the Eocene Incaic tectonic phase. It can be hypothesized that some of these basins contain mineralogical evidences that come from the denudation of porphyry copper mineralized systems located upstream. Therefore, the main goal of this thesis is to find magnetic, mineral and chemical evidences that will help to link the denudation of PCDs with sediments deposited in adjacent basins, mainly by using heavy minerals and magnetic signals as tracers contained in the sedimentary record. To test this relationship, I compare the rock-magnetic properties and physical and geochemical characteristics of minerals (zircon and apatite) in four selected DPCs located in Domeyko Cordillera (Chuquicamata, Mirador, Esperanza and Escodida), with the same characteristics in detrital sediment filling a close basin in the Centinela Mining District. In the studied PCDs, accessory minerals with distinctive physical and geochemical characteristics associated with metallogenic fertility were identified. In zircons, the most fertile samples correspond to these geochemical signatures: Hf > 8,750 (ppm), Eu/Eu* > 0.4, 10.000 x (Eu/Eu*)/Y > 1, (Ce/Nd)/ Y > 0.01, Dy/Yb < 0.3, Th/U < 1 - > 0.1), which can be linked to high oxidation state and high content of magmatic water in the magma. In apatite, the most relevant features indicating fertility are the green luminescence color and high Ca values and low content of trace elements, such as Mg, Na, Cl, which can be related to the evolution of hydrothermal fluids. Although the magnetic signal from DPCs is controlled by the presence of Fe-Ti oxides of hydrothermal and magmatic origin, their characteristics could not be used to differentiate the contribution of these two components. In the stratigraphic record there is a gravel deposit (Tesoro) which contains an important number of zircons and apatite which can be signaled as indicators of metallogenic fertility, that coincides with exotic-Cu mineralization and abundant clasts coming from different hydrothermal alteration zones related to PCDs. In the gravel deposits, a decrease in the magnetic susceptibility values from lower to upper levels is observed, which is mainly controlled by coarse-grain Fe-Ti oxides concentration of detritic origin. In the gravel deposits, rock magnetic properties are mainly controlled by Fe-Ti oxides concentration of detritic origin, where the highest concentration of Fe-minerals could be associated to arid climatic conditions and a rapid tectonically-controlled denudation, whereas the decline in concentration can be related to an aridification trend and/or sources changes
Rappé, Charles J. "Porphyry and the Platonic-Aristotelian tradition." [S.l. : s.n.], 2002. http://www.freidok.uni-freiburg.de/volltexte/599.
Full textMcFall, Katie Anne. "Critical metals in porphyry copper deposits." Thesis, University of Southampton, 2016. https://eprints.soton.ac.uk/412122/.
Full textValencia, Victor A. "EVOLUTION OF LA CARIDAD PORPHYRY COPPER DEPOSIT, SONORA AND GEOCHRONOLOGY OF PORPHYRY COPPER DEPOSITS IN NORTHWEST MEXICO." Diss., Tucson, Arizona : University of Arizona, 2005. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu%5Fetd%5F1085%5F1%5Fm.pdf&type=application/pdf.
Full textAndré-Mayer, Anne-Sylvie. "Fluides et fracturations dans les gisements de type porphyre et épithermal." Nancy 1, 2000. http://www.theses.fr/2000NAN10176.
Full textIn metallogeny, it is now obvious that fluids are the main vectors of metals and that fluids and deformations are closely associated in the mineralizing processes. This work deals about this two main aspects in the porphyry and epithermal environment. Fluid studies, realised in the epithermal district of Shila (SW Peru), allow to state a mineralizing model at the district scale. The differences observed in the PVT properties of the fluids seem to explain the different types and styles of mineralization. At Apacheta, studies of the vertical evolution of the physico-chemical parameters of the fluids in parallel to the mineralization show that differences, observed between deep levels (Pb-Zn) and shallower levels (AuAg), is directly linked to a fractionation of gases present in fluids during a boiling event. The geochemistry (crush-leach) of the fluids associated to this type of mineralization in various districts (Shila, Pero; Baia Mare and Apuseni Moutains, Romania; Pongkor, Indonesia) are similar whatever their geodynamic context and are comparable with the fluids associated to geothermal systems. Analyses of fracture networks has been realised at macroscopic scale on different (mineralized or not) vein systems. They allow in a first time to establish a new methodology to characterize paleostresses taking into account the influence of the fluid pressure. Applied on the Soultz-sous-Forêts vein system, this method gives realistic paleostress magnitudes linked to the reopening of quartz veins. The mineralized stockwerk of the Rosia Poieni porphyry copper (Apuseni Mts, Romania) has been chosen for a statistical and hydraulic characterization in order to understand how mineralized vein system evolve and grow. A 1D sampling of the stockwerk has been realized on 2000 fractures distributed on five levels of the open pit (910, 940, 1000, 1045 and 1060 ml. Various statistical analyses has been applied and heterogeneities observed in the stockwerk (metric scale) express directly variations in the copper content. Statistical description of the stockwerk properties seems thus to be a very powerful prospective tool. Estimation of hydraulic conductivities developed by veins has been realized and show equally heterogeneities at the quarry scale. The mean permeability developed by all the veins on each profile decrease from the deeper and more mineralized level (910m) to the highest level (1060m). High permeabilities developed on the 910 m profile are linked to the presence of major drains and the clustered organization of veins. The level 1060 m, characterized by numerous and thin veins with a homogeneous spatial repartition, develop a more pervasive permeability
Geißler, Marion, Anja Hartmann, Wolfram Heidenfelder, and Tim Witzke. "Geotope - Einblicke in die Erdgeschichte." Geopark Porphyrland. Steinreich in Sachsen e.V, 2019. https://slub.qucosa.de/id/qucosa%3A36070.
Full textDickinson, Jenni Michelle. "Jura-triassic magmatism and porphyry Au-Cu mineralization at the Pine Deposit, Toodoggone District, North-central British Columbia." Thesis, University of British Columbia, 2006. http://hdl.handle.net/2429/3959.
Full textPuig-Pichuante, R. M. "Molybdeunum mineralization with emphasis on porphyry systems genesis and exploration." Thesis, Rhodes University, 1986. http://hdl.handle.net/10962/d1006840.
Full textCurtis, Bruce Anthony. "A morphological and phylogenetic investigation of Porphyra linearis Greville and Porphyra purpurea (Roth) C. Agardh forms from Nova Scotia." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq23688.pdf.
Full textWolfe, RC. "The Dinkidi Cu-Au porphyry : geology of the Didipio region and paragenesis of the Dinkidi Cu-Au porphyry deposit." Thesis, Royal Society of Tasmania, University of Tasmania Library Special and Rare Materials Collection, 2002. https://eprints.utas.edu.au/11283/2/Wolfe_-Whole.pdf.
Full textLampadaridi, Anna. "La Vie de Porphyre de Gaza par Marc le Diacre (BHG³ 1570) : Édition critique, traduction, commentaire." Thesis, Paris 4, 2011. http://www.theses.fr/2011PA040140.
Full textThe Life of Porphyry of Gaza (BHG³ 1570) is a hagiographical text of the protobyzantine period written by Mark the Deacon. He introduces himself as the saint’s loyal disciple, who narrates his master’s life after his death in 420. However, due to the plagiarism of Theodoret of Cyrrhus’s Philotheos History, the current form of the Vita dates certainly later than 444 and cannot have been written by Mark, who is just the narrator. According to the hypothesis of the editors Grégoire and Kugener, the current form of the Vita is the result of the revision of an older text. The text provides us with a unique account of the history of paganism and christianism in Gaza at the end of the 4th and the beginnings of the 5th century. Appointed bishop of Gaza in 395, Porphyry contributes actively to the christianisation of the city, which was largely pagan. The peak of his activity is the demolition of the Marneion and the erection of the “Great Church” of Gaza on the site of the former temple. However, in addition to the problems concerning its authorship and its datation, the Vita was found in the centre of a great debate concerning its historical value since the time of Tillemont. In the frame of our PhD thesis, we undertook a new critical edition, accompanied by a french translation. The brief literary study of the text is followed by a historical commentary guided by the problem of the Vita’s authenticity. The critical edition is preceded by an examination of the direct and the indirect text tradition. Finally, the notes of the translation aim to reveal its documentary value
Huh, Min-Jun. "Le premier commentaire de Boèce à l’Isagogè de Porphyre : introduction, traduction et commentaire." Thesis, Paris 4, 2013. http://www.theses.fr/2013PA040145.
Full textOur thesis in two volumes aims to give an original French translation of Boethius’s first commentary on Porphyry’s Isagoge based on the critical edition published by Samuel Brandt in 1906. Actually, Boethius commentary deals with the Latin translation of Marius Victorinus and not, as the title seems to suggest, with the greek treatise of Porphyry. The first volume contains a general introduction divided into four parts : a critical studies of the secondary sources; the material sources of the Boethian first commentary on Isagoge; the Boethian analysis of Porphyry’s three questions about universals; and Marius Victorinus’ Isagoge and the Latin rhetorical tradition. The thesis we defend in the introduction can be summarized as follows : Porphyry’s lost commentary on Categories (Ad Gedalium) may have been the main source of the first Boethian commentary on Isagoge ; historically, the three questions on universals had been related to the Porphyrian refutation of anti-Aristotelian position of Plotinus ; and, unlike Victorinus which considers Isagoge as an introduction to Cicero’s Topica, Boethius adopts the Neoplatonic perspective which makes it an introduction to Aristotle’s Categories. This introduction is followed by the French translation accompanied by the latin text edited by Brandt. Our commentary on the Boethian treatise is developed in the second volume, which also contains an original French translation of Ammonius’ commentary on Porphyry’s Isagoge and a full refutation of the thesis supported by Brandt in his prolegomena to his critical edition about the textual parallels attested in the Boethian and Ammonian commentaries on Isagoge (cf. appendix 1 and 2)
Carlier, Jeanne. "Recherches sur la lettre à Anébon, de Porphyre." Paris 4, 1995. http://www.theses.fr/1995PA040028.
Full textThis thesis offers detailed research on the status and functions of the intermediate beings in Porphyry's religious philosophy (vol. 1); an edition and translation of Porphyry's fragmentary letter to Anebo, including a translation of De Styge and Summikta zetemata (vol. 2); a commentary (textual and conceptual) on the part of the letter concerning divination and the hierarchy of superior beings. Four problems are dealt with : the legitimized sources of knowledge according to Prophyry (revelation, philosophy, "innate notions"); the status of man, of god, of the intermediate beings : are god and man consubstantial?; Porphyry's attitude toward the rituals of positive religion, especially towards theurgy, which is proved to include a good deal of common religion; the targets of porphyry's criticism in the letter to Anebo
Griffin, Neil John. "Harvest ecology and biodiversity of South African Porphyra." Doctoral thesis, University of Cape Town, 2003. http://hdl.handle.net/11427/10564.
Full textPorphyra (Bangiales, Rhodophyta) is the world's most valuable maricultured seaweed, due to its high value as a food crop. The vast majority of Porphyra in South Africa belongs to P. capensis, a morphologically and ecologically plastic taxon apparently endemic to the region. There is no demand for P. capensis as a food crop, as it is unsuitable for the market, and there are no records of its customary use locally. Porphyra capensis is however a potentially highly valuable fodder for the mariculture of abalone (Haliotis midae), and pressure to harvest it has recently increased. This study aims to assess the potential for harvest of Porphyra on the south-western shores of South Africa. There are two main thrusts to this work. The fIrst thrust examines Porphyra as an ecological entity in the region. The second thrust reassesses the taxonomy of Porphyra species in the region.
Carle, Jacques. "Porphyre "contre les chrétiens" : édition, traduction et commentaire." Aix-Marseille 1, 2008. http://www.theses.fr/2008AIX10014.
Full textNickerson, Phillip Anson. "Post-Mineral Normal Faulting in Arizona Porphyry Systems." Diss., The University of Arizona, 2012. http://hdl.handle.net/10150/242354.
Full textMathur, Ryan Dilip. "Rhenium-osmium isotopes of base metal porphyry deposits." Diss., The University of Arizona, 2000. http://hdl.handle.net/10150/289216.
Full textTomlinson, 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.
Full textSchweikert, Katja, and n/a. "The functional biology of Porphyra sp. in New Zealand." University of Otago. Department of Botany, 2007. http://adt.otago.ac.nz./public/adt-NZDU20080910.114121.
Full textGingras, Delphine. "L'influence du stoïcisme sur le De Abstinentia de Porphyre." Master's thesis, Université Laval, 2018. http://hdl.handle.net/20.500.11794/33305.
Full textThe treatise On Abstinence is written by Porphyry in order to convince his friend to return to the practice of vegetarianism, which he recently abandoned. In this text, a series of anti-vegetarian arguments are presented, which the author refutes while defending the relevance of this way of life for the philosopher. Among the opponents, the Stoics have an important place, the third book of the treaty being almost entirely devoted to them. Refuting the anti-vegetarian arguments of the Stoics, Porphyry develops his positions with a vocabulary borrowed to them. In doing so, he gives his treatise a Stoic flavour. This dissertation aims to analyze how the dialogue between Porphyry and the Stoics influences the author of the De abstinentia. The anti-vegetarian argument attributed to the Stoics says that it is impossible to ask of human to spare the life of animals, since they are not rational and, thus, not appropriate (oikeion) to us. Because, in the Stoic‟s theory, justice is rooted in the relations of appropriation between rational beings, we could not say that killing animals to eat their flesh is unjust, or impious, like Porphyry argues. One chapter will be dedicated to each of the terms of this debate: oikeiôsis, justice and reason. These three notions will allow us to further the analysis of the disagreement of Porphyry towards the Stoics and to understand how this neoplatonic philosopher uses the Stoics vocabulary to pursue his own metaphysical goals. We will find that behind the question of vegetarianism lies the more complex theme of the way of life.
Diaz, Acevedo Nelson Simon. "Exotic deposits derived from porphyry copper systems in Chile." Thesis, Rhodes University, 1996. http://hdl.handle.net/10962/d1011149.
Full textRasmussen, Henrik. "Caractérisation des intrusions porphyriques du secteur du Lac Ackerman, ceinture de roches vertes de Swayze, Ontario /." Thèse, Chicoutimi : Université du Québec à Chicoutimi, 1999. http://theses.uqac.ca.
Full textSchumer, Benjamin Nathan, and Benjamin Nathan Schumer. "Mineralogy of Copper Sulfides in Porphyry Copper and Related Deposits." Diss., The University of Arizona, 2017. http://hdl.handle.net/10150/626163.
Full textSpencer, Edward. "The transport and deposition of molybdenum in porphyry ore systems." Thesis, Imperial College London, 2015. http://hdl.handle.net/10044/1/27402.
Full textGendall, Ian Richard. "The porphyry copper system and the precious metal-gold potential." Thesis, Rhodes University, 1994. http://hdl.handle.net/10962/d1005604.
Full textNelson, James Baird 1967. "Analysis of trace element distributions distal to porphyry copper deposits." Thesis, The University of Arizona, 1996. http://hdl.handle.net/10150/278566.
Full textClarke, Emma Catherine. "Iamblichus' De Mysteriis : a manifesto of the miraculous." Thesis, Royal Holloway, University of London, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.327055.
Full textMiller, Owen David William. "Precious metal mineralization associated with the Coed-y-Brenin porphyry copper system, North Wales." Thesis, University of Aberdeen, 1993. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=236945.
Full textCardon, Olivier Leroy Jacques André-Mayer Anne-Sylvie. "Datation Re-Os sur pyrite et traçage des sources des métaux dans des gisements de type porphyre et épithermal neutre exemple des gisements de Bolcana, Troita et Magura, Monts Apuseni, Roumanie /." S. l. : S. n, 2007. http://www.scd.uhp-nancy.fr/docnum/SCD_T_2007_0130_CARDON.pdf.
Full textRich, Shane Daniel. "Geochemical mapping of porphyry deposits and associated alteration through transported overburden." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/58704.
Full textScience, Faculty of
Earth, Ocean and Atmospheric Sciences, Department of
Graduate
Magny, Ariane. "Porphyry in fragments : Eusebius, Jerome, Augustine and the problem of reconstruction." Thesis, University of Bristol, 2010. http://hdl.handle.net/1983/d105292c-dfd6-4210-b53c-db5d1c4003f9.
Full textChase, John Michael. "Etudes sur le commentaire de Porphyre sur les "Catégories" d'Aristote adressé à Gédalios." Paris, EPHE, 2000. http://www.theses.fr/2000EPHEA001.
Full textRunyon, Simone Elizabeth, and Simone Elizabeth Runyon. "Deep Hydrothermal Alteration in Porphyry Copper Systems: Insights from the Laramide Arc." Diss., The University of Arizona, 2017. http://hdl.handle.net/10150/625856.
Full textGreenlaw, Lauren. "Surface lithogeochemistry of the Relincho porphyry copper-molybdenum deposit, Atacama region, Chile." Thesis, University of British Columbia, 2014. http://hdl.handle.net/2429/50752.
Full textScience, Faculty of
Earth, Ocean and Atmospheric Sciences, Department of
Graduate
Hollis, Lucy. "Cretaceous porphyry magmatic-hydrothermal systems in the Tchaikazan River area, southwest B.C." Thesis, University of British Columbia, 2009. http://hdl.handle.net/2429/15291.
Full textWareham, Christopher Desmond. "Isotopic and geochemical studies of a Pliocene porphyry-mo system, Rico, Colorado." Thesis, University of Aberdeen, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.304968.
Full textde, Sousa Eudes Alves 1959. "Impact of geology on ore grade estimation of a porphyry copper deposit." Thesis, The University of Arizona, 1990. http://hdl.handle.net/10150/277264.
Full textValencia-Moreno, Martin Andres 1961. "Geochemistry of Laramide granitoids and associated porphyry copper mineralization in northwest Mexico." Diss., The University of Arizona, 1998. http://hdl.handle.net/10150/282731.
Full textTala, Fadia. "Fenologia e ecofisiologia das macroalgas Porphyra spp. (Bangiales, Rhodophyta) e Lessonia spp. (Laminariales, Phaeophyceae) na costa norte e central do Chile: variações latitudinais e sazonais." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/41/41132/tde-31032014-110235/.
Full textThe purpose of phenological studies is to describe and understand how the development of the organisms occurs in response to environmental variations which change cyclically and how certain factors stimulate the generation of signals and a cascade of reactions from molecular, biochemical and physiological levels, which at the end manifests annual patterns of abundance and reproduction. Environmental changes occur in time scale (daily, seasonal, interannual) and spatial scale (latitudinal, depth, altitude) and have a strong impact on growth and development of the species, especially those with sessile characteristics. The purpose of this study was to characterize the phenology (seasonal and latitudinal) of abundance, reproduction, photosynthesis and antioxidant capacity of two macroalgae with ecological and economic importance, Porphyra spp. (Rhodophyta) and Lessonia spp. (Phaeophyceae), distributed along the coast north and center (25° - 34°S) in Chile. The results show that seasonal changes in radiation and latitudinal temperature significantly influence the phenological and ecophysiological responses of the species studied. For Porphyra spp., the most notorious temporal adjustment involves an annual phenological development from north population in contrast to perennial populations from central and south. The physiological characteristics showed decrease in photosynthetic efficiency, pigments (chlorophyll a, carotenoids and phycobiliproteins) and soluble proteins in spring-summer, accompanied by increasing in antioxidant capacity. For Lessonia spp., although the abundance showed no seasonal changes between the populations, the most notoriously temporal adjustment occurs in physiological characteristics with decrease in photosynthetic efficiency, pigments (chlorophylls a and c, carotenoids), phenols and antioxidant capacity during the summer, followed by increase in thallus absorptance, ETRmax and NPQ. Studies on the taxonomic identity of Porphyra populations are required to distinguish between possible characteristics due to species-specific patterns from morphological or ecotypes variations. Studies in the species Lessonia near their limits of biogeographical distribution could elucidate whether the phenological and physiological differences are due to patterns species-specific or are masked by local environmental characteristics. The phenological studies and changes in the biochemical/physiological levels can subsidize new destination of biomass production and raw material from organisms economically important. Moreover, changes in typical phenological and ecophysiological patterns can give a light about environmental impacts of alterations such as global climate changes, contamination and pollution, overexploitation and interactions and dynamics between populations.
Astudillo, Leyton Natalia. "Minéralogie magnétique et paléomagnétisme des grands gisements type porphyre cuprifère de Chuquicamata et El Teniente, Chili." Toulouse 3, 2008. http://thesesups.ups-tlse.fr/292/.
Full textThe principal objective of this research was to determine the effects of hydrothermal alteration on the magnetic mineralogy and the paleomagnetic records in two Chilean porphyry copper mega deposits. The Chuquicamata orebody (Eocene-Oligocene) where the mineralization is hosted in granodioritic rocks is longitudinally limited by a master fault (West fault) and the economic mineralization is concentrated on the eastern side. Magnetic susceptibility and remanent magnetization strongly decrease, while quartz sericite alteration increases when getting closer to the fault. In the western block of the mine, counterclockwise rotation of small blocks associated with deformation along the West Fault, support the hypotesis of 35 km of sinistral strike-slip movement, leading to the juxtaposition of Chuquicamata porphyry copper deposit with the Fiesta granodiorite. In El Teniente orebody (late Miocene- early Pliocene), the magnetic contrasts are strong between weakly magnetic dacites and quartz-diorites (k <0. 001 SI) and the mineralized andesite complex (<0. 01 < k < 0. 2 SI). A very stable remanent magnetization of normal or reverse polarity is carried by fine grained magnetite. Considering the frequent polarity reversals of the earth magnetic field in the time interval 4. 5-5Ma, the spatial zonation of magnetic polarity within the mine suggests that mineralization and subsequent cooling occurred within short time intervals (~0. 1-0. 2Ma)
Rempel, Kirsten U. "The solubility and speciation of molybdenum in aqueous liquid and vapour : an experimental study." Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=115874.
Full textMach, Craig J. "Tectonic controls, timing and geochemistry of supergene enrichment of the Tyrone porphyry copper deposit, Grant County, New Mexico /." abstract and full text PDF (UNR users only), 2009. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3342621.
Full text"December, 2008." Accompanying CD-ROM contains appendices C and D. Appendix C: AutoCAD files with drill hole log; Appendix D: excel spreadsheet with copper mass balance calculations. Includes bibliographical references (leaves 206-215). Library also has microfilm. Ann Arbor, Mich. : ProQuest Information and Learning Company, [2009]. 1 microfilm reel ; 35 mm. Online version available on the World Wide Web.
Stavast, William James Andrew. "Three-Dimensional Evolution of Magmatic Hydrothermal Systems, Schultze Granite and Ruby Star Granodiorite, Arizona." Diss., The University of Arizona, 2006. http://hdl.handle.net/10150/194841.
Full textNiese, Siegfried. "Der Porphyrfächer in Mohorn-Grund - ein sehenswertes Naturdenkmal in der Umgebung interessanter erdgeschichtlicher Zeugnisse." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-160625.
Full textThe Porphyrfächer in a former quarry in the forest of Tharandt in Saxonia in Mohorn-Grund and a number of further geological outcrops with different types of rocks from different geological ages in his vicinity are described. Most of them can be seen at a round in a geological open-air museum. Many geologists and visitors have shown their interest in these rocks in the last two century, too
McGregor, Bruce Jonathan. "Aspects of the biology of Porphyra (Bangiales, rhodophyta) of the Isle of Man." Thesis, University of Liverpool, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.317182.
Full textYalo, Masande Nicholas. "An investigation of the natural products composition of Porphyra capensis (a red seaweed)." University of the Western Cape, 2017. http://hdl.handle.net/11394/6354.
Full textPlants have been widely used in traditional medicine for a number of ailments, among which may be included infectious diseases such as colds, influenza, chicken pox, TB, etc. as well as lifestyle diseases such as diabetes and cancer. Seaweeds have also been shown to contribute to the maintenance of health through their nutritional and medicinal properties and recently, a great deal of interest has developed towards the isolation of bioactive compounds from marine sources due to their numerous health benefits. Furthermore, marine algae are valuable sources of structurally diverse metabolites with scientifically proven therapeutic claims. Chemical constituents of red seaweed, Porphyra capensis was investigated in this present study along with subsequent brine shrimp lethality assay analysis of the crude extracts. The compounds isolated from the plant were from the hexane (6) and butanol (2) extracts. These compounds were all isolated and purified by various chromatographic techniques, namely silica gel chromatography, Sephadex LH-20 gel as well as C18 reversed phase silica gel. The structures of the isolated compounds were analysed and characterised by NMR, GC-MS, ESI MS and FTIR spectroscopy. Eight compounds were isolated and identified as phytol, desmosterol, 9-eicosenoic acid, 5,8,11,14,17-eicosapentanoic acid, palmitic acid, methyl (E)-hexadec-9-enoate, glycerol and compound 1 (novel compound). All the compounds were isolated from Porphyra capensis for the first time. The hexane, butanol and methanol extracts were found to be non-toxic with the brine shrimp test LC50 value at least two times greater than ?g/ml.
Gilmer, Amy K. "Petrogenesis of the Don Manuel igneous complex and porphyry copper system, central Chile." Thesis, University of Bristol, 2016. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.702924.
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