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Dissertations / Theses on the topic 'Mylonite'

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Published: 4 June 2021
Last updated: 31 July 2024

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1

Bretan, P. G. "Deformation processes within mylonite zones associated with some fundamental faults." Thesis, Imperial College London, 1986. http://hdl.handle.net/10044/1/37954.

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2

Maurel, Olivier. "L'exhumation de la zone axiale des Pyrénées-Orientales une approche thermo-chronologique multi-méthodes du rôle des failles /." Montpellier : Institut des sciences de la terre, de l'environnement et de l'espace de Montpellier, 2003. http://catalogue.bnf.fr/ark:/12148/cb401527828.

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3

Point, Raymond. "La lame cratonique et les unités supracrustales de la chaîne calédonienne scandinave méridionale orientale : un exemple d'évolution polycyclique de mylonites précambriennes." Paris 7, 1990. http://www.theses.fr/1990PA077217.

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Dans les caledonides orientales scandinaves, l'etude des roches impliquees dans les deux nappes situees a la base de la grande nappe de seve, permet de definir deux grandes unites formees de mylonites heterogenes et polycycliques: 1) a la base, la lame cratonique, unite formee de lames de socle cristallin mylonitique a lithologie variee parmi lesquelles les orthogneiss de tannas representent une part importante en volume; 2) au-dessus, la nappe de sarv-humelfjell, unite de roches supracrustales formee de lames de tectonites ultramylonitiques et protomylonitiques a facies de pseudo-metaquartzit
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4

Papa, Simone. "The pseudotachylyte-­mylonite association: an insight into the mechanics of deep earthquakes." Doctoral thesis, Università degli studi di Padova, 2019. http://hdl.handle.net/11577/3425421.

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The aim of this thesis is to investigate the association of fault rocks formed by seismic deformation with coeval ductile deformation. The only recognised geological record of these two concurrent deformation mechanisms is represented by the relationship between coeval pseudotachylytes (quenched melts produced during seismic slip) and mylonites (high-­‐strain rocks deformed in high-temperature ductile flow). The scientific importance of this association of rocks lies in the fact that their existence in rocks exhumed from below the long-­‐term brittle/ductile transition is a compelling evidence
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5

Stewart, Martyn. "Kinematic evolution of the Great Glen Fault Zone, Scotland." Thesis, Oxford Brookes University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364096.

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6

Parsons, Martha Mary. "Field and Microstructural Constraints on Deformation Conditions and Shear Zone Kinematics in the Burlington Mylonite Zone, Massachusetts:." Thesis, Boston College, 2017. http://hdl.handle.net/2345/bc-ir:107375.

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Thesis advisor: Seth C. Kruckenberg<br>The Burlington Mylonite Zone (BMZ) is a northeast-trending, greenschist- to amphibolite-facies shear zone located entirely within the Boston Avalon terrane in Eastern Massachusetts along the tectonic boundary with the Nashoba terrane (the trailing marginal terrane of Ganderia). The juxtaposition of these terranes, and the development of the BMZ, is hypothesized to represent the amalgamation of Avalon and Laurentia during the late Silurian-early Devonian Acadian orogeny, but the timing of its formation and its structural evolution remain largely unconstrai
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7

Loehn, Clayton William. "Monazite Geochronology of the Madison Mylonite Zone and Environs, Southwestern Montana: With Implications for Precambrian Thermotectonic Evolution of the Northern Wyoming Province." Thesis, Virginia Tech, 2009. http://hdl.handle.net/10919/31692.

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Neoarchean thermotectonism at in the northern Wyoming province is preserved in metamorphic zircon rims and monazite growth throughout the Snowy shear zone (SSZ) and the Madison mylonite zone (MMZ), South Madison Range, Montana. Comparison of U-Pb and U-Th-Pb ages yielded by monazite grains from both shear zones and zircon rims from SSZ, a new timing for major SE-directed thrusting and formation of the MMZ and SSZ has been identified at ~2550 Ma. The collinearity of these two shears indicates the formation of a much larger single shear zone that extends from the North Snowy block (NE), Bearto
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8

Mehl, Luc. "Plagioclase preferred orientation in the layered mylonites : evaluation of flow laws for the lower crust." Thesis, Online version of original thesis, 2008. http://hdl.handle.net/1912/2324.

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9

Jarrett, Corey. "Analysis of an Exposed Portion of the Badwater Turtleback Shear-zone, Death Valley, California, USA." Thesis, University of Oregon, 2018. http://hdl.handle.net/1794/23181.

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The exposed shear zone within the footwall of the Badwater turtleback presents an excellent opportunity to explore the brittle-ductile transition. Within this shear zone, a variety of lithologies preserve the last stages of crystal-plastic deformation concurrent with exhumation of the turtleback. The included field study captures a snapshot of each lithologic element during the last stages of ductile deformation. The exposed shear zone's journey through the brittle-ductile transition is analyzed using the deformation mechanisms of calcite and quartz. A history of strain partitioning is constr
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10

Tatarin, Triffon Joseph, and Triffon Joseph Tatarin. "Interrelationships of cataclasite, mylonite, and leucocratic bodies associated with the Catalina detachment fault, dual wash area, Saguaro National Park east, Rincon Mountains." Thesis, The University of Arizona, 2017. http://hdl.handle.net/10150/626821.

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The Dual Wash area is comprised of two west-northwest-trending washes (Deer Valley and Carillo), which provide excellent cross-section exposures of metamorphic core complex fault rock units. The structural components of metamorphic core complexes consist of upper plate rocks, a detachment fault, cataclasite and chlorite breccia, subdetachment fault, and mylonites. Within the Carillo Wash, the Catalina detachment fault dips ~13° NW, which is consistent with its overall dip in this part of the Rincon Mountains. However, exposed along the Deer Valley Wash, the Catalina detachment fault dips more
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11

Adriao, de Brito Alden. "Mélange mécanique et métamorphisme des lithologies basiques et ultrabasiques au cours de la mylonitisation dans le système transformant de St. Paul, Dorsale Médio-Atlantique." Thesis, Brest, 2019. http://www.theses.fr/2019BRES0012.

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Le système transformant de St. Paul (SPTS) affiche l’un des contextes tectoniques les plus complexes, composé de quatre failles transformantes, trois segments de dorsale (intra-transformants) qui décalent de 630 km la dorsale équatoriale médio-atlantique. Cette région est connue pour ses roches mantelliques uniques qui émergent dans les îlots Saint-Pierre et Saint-Paul, toujours en cours d’élévation. Le SPTS montre une transition depuis une zone de cisaillement régionale au nord vers une région dominée par des Ocean Core Complexes (OCCs) au sud. Les tectonites recueillies tout le long du systè
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12

Toy, Virginia Gail, and n/a. "Rheology of the Alpine Fault Mylonite Zone : deformation processes at and below the base of the seismogenic zone in a major plate boundary structure." University of Otago. Department of Geology, 2008. http://adt.otago.ac.nz./public/adt-NZDU20080305.110949.

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The Alpine Fault is the major structure of the Pacific-Australian plate boundary through New Zealand�s South Island. During dextral reverse fault slip, a <5 million year old, ~1 km thick mylonite zone has been exhumed in the hanging-wall, providing unique exposure of material deformed to very high strains at deep crustal levels under boundary conditions constrained by present-day plate motions. The purpose of this study was to investigate the fault zone rheology and mechanisms of strain localisation, to obtain further information about how the structural development of this shear zone relates
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13

Orndorff, William D. "Crystalline bedrock geology of the lower Susquehanna Gorge: Conowingo to Havre de Grace, Maryland." Thesis, Virginia Tech, 1996. http://hdl.handle.net/10919/36167.

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14

Jackson, Christopher. "A microstructural kinematic study of selected shear zones in the Hartbees River Thrust Belt, northeastern Namaqua Tectonic Province." Thesis, Rhodes University, 1992. http://hdl.handle.net/10962/d1005588.

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The Hartbees River Thrust Belt (HRTS) is a 40-60 km wide, southwest-vergent zone of complex structure, lithostratigraphy and high-grade metamorphism in the northeastern part of the mid-Proterozoic Namaqua Tectonic Province. The HRTS comprises the boundary zone separating the Bushmanland and Gordonia Subprovinces of the Namaqua Province. A knowledge of the movement histories of major ductile shear zones within the HRTS is fundamental to understanding the tectonic development of the belt, and Namaqua tectogenesis as a whole. In spite of this, no detailed microstructural kinematic studies have be
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15

MAUREL, Olivier. "L'exhumation de la Zone Axiale des Pyrénées orientales : Une approche thermo-chronologique multi-méthodes du rôle des failles." Phd thesis, Université Montpellier II - Sciences et Techniques du Languedoc, 2003. http://tel.archives-ouvertes.fr/tel-00003429.

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La structuration de la Zone Axiale des Pyrénées Orientales est le résultat d'une évolution thermique et tectonique complexe depuis plus de 300 Ma, synthétisée dans le premier chapitre de ce mémoire. Dans le but de mieux appréhender cette évolution à l'échelle des différents massifs de cette Zone Axiale, une approche thermochronologique multi-méthodes (U-Pb, 40Ar/39Ar, traces de fission et (U-Th)/He) a été mise en œuvre afin de dater et quantifier les processus thermiques et mécaniques qui participent à leur exhumation (Second chapitre). L'activité essentiellement alpine de la faille de la Têt
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16

Degli, Alessandrini Giulia. "Deformation mechanisms and strain localization in the mafic continental lower crust." Thesis, University of Plymouth, 2018. http://hdl.handle.net/10026.1/12799.

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The rheology and strength of the lower crust play a key role in lithosphere dynamics, influencing the orogenic cycle and how plate tectonics work. Despite their geological importance, the processes that cause weakening of the lower crust and strain localization are still poorly understood. Through microstructural analysis of naturally deformed samples, this PhD aims to investigate how weakening and strain localization occurs in the mafic continental lower crust. Mafic granulites are analysed from two unrelated continental lower crustal shear zones which share comparable mineralogical assemblag
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17

Ceccato, Alberto. "Structural Evolution of Periadriatic Plutons and its implications on solid-state deformation of granitoid rocks." Doctoral thesis, Università degli studi di Padova, 2018. http://hdl.handle.net/11577/3427142.

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Exhumed granitoid plutons are an ideal natural research target for studying the processes of nucleation and evolution of ductile and brittle deformation structures. Granitoid plutons, unaffected by later tectono-metamorphic cycles, preserve pristine deformation structures developed during cooling from magmatic to host rock ambient temperatures, that can be assumed as representatives of structures that at different structural levels of the continental crust. The main focus of this Ph.D. project is the analysis of deformation structures of the Rieserferner pluton – one of the major Periadriatic
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18

Grotenhuis, Saskia Martine ten. "Mica fish in mylonites deformation mechanisms and implications for rheology /." [S.l. : s.n.], 2000. http://ArchiMeD.uni-mainz.de/pub/2001/0033/diss.pdf.

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19

Lamouroux, Christian. "Les mylonites des Pyrénées : classification, mode de formation et évolution." Toulouse 3, 1987. http://www.theses.fr/1987TOU30312.

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Les zones mylonitiques, trait majeur des pyrenees, appartiennent a deux familles principales: les zones longitudinales senestres ; les zones obliques dextres deformant les precedentes. L'analyse des materiaux permet de definir plusieurs types de mylonites dont la repartition au sein des zones ne presente aucune rythmicite. Leurs caracteres autorisent une classification avec la definition de: i) sequences de mylonites (mineralogie) ; ii) types mylonitiques dans chaque sequence en fonction de la valeur de la deformation et des processus de deformation actives pour un mineral-reference. Le mode d
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20

Lamouroux, Christian. "Les Mylonites des Pyrénées classification, mode de formation et évolution /." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb376177993.

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21

NARUK, STEPHEN JOHN. "KINEMATIC SIGNIFICANCE OF MYLONITIC FOLIATION (METAMORPHIC)." Diss., The University of Arizona, 1987. http://hdl.handle.net/10150/184087.

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Geometric analyses of three mylonite zones, including two metamorphic-core-complex SC-mylonite zones, show that the mylonitic foliation surfaces (S-surfaces) are consistently discordant to the margins of the shear zones. Finite-strain analyses show that the foliation surfaces in each zone are consistently oriented parallel to the XY-plane of the finite strain ellipsoid. The shear bands within the mylonites (C-surfaces, C'-surfaces, extensional crenulations, and shear-band cleavages) are uniformly oriented subparallel to the margins of the shear zones. The finite lengths and discontinuous natur
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22

Prior, D. J. "Deformation processes in the Alpine Fault mylonites, South Island, New Zealand." Thesis, University of Leeds, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384072.

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23

Bürgi, Christoph. "Cataclastic fault rocks in underground excavations : a geological characterisation /." [S.l.] : [s.n.], 1999. http://library.epfl.ch/theses/?nr=1975.

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24

Wane, Ousmane. "Étude géologique du Birimien de la région de Massigui (Paléoprotérozoïque du Mali méridional) : la zone de cisaillement du Banifing, structure majeure du craton ouest-africain." Thesis, Lille 1, 2010. http://www.theses.fr/2010LIL10093.

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Le Degré Carré de Massigui (Mali Sud) est composé de roches métavolcano-sédimentaires et de grandes masses de roches plutoniques d’âge paléoprotérozoïque. Il est traversé par une zone de cisaillement d’échelle crustale qui se localise à l’interface du batholite de Massigui et des roches métavolcano-sédimentaires encaissantes. Cette zone de cisaillement est jalonnée de corps dioritiques et granitoïdiques. Sa compréhension représente un enjeu au niveau régional.Les roches paléoprotérozoïques sont peu affleurantes et la région est recouverte par d’abondantes formations latéritiques qui empêchent
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25

Roth, Benjamin Louis. "Flow Properties of Moine Thrust Zone Mylonites in Northern Assynt, NW Scotland." Thesis, Virginia Tech, 2010. http://hdl.handle.net/10919/46210.

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Quartz-rich mylonites present along the Moine Thrust Zone are well suited for the application of various analytical techniques designed for investigating the flow processes by which rock deformation occurred. These analytical techniques were applied to a suite of samples from the footwall and hangingwall of the Moine thrust exposed along the Allt Pol aâ Mhadaich stream located in the northern part of the Assynt window. Vorticity analyses were performed to determine the relative contributions of pure and simple shear deformation within the penetratively deforming thrust sheets. Integration
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26

BOLOGNESI, FRANCESCA GIOVANNA. "Brittle deformation in phyllosilicate-rich mylonites: implications for failure modes, mechanical anisotropy, and fault weakness." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2015. http://hdl.handle.net/10281/69725.

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Phyllosilicates, even in relatively small quantities, dramatically influence the mechanical behavior of rocks. In laboratory triaxial tests on foliated rocks, for content in phyllosilicates greater than 20-25%, a relevant mechanical anisotropy appears, as the internal friction coefficient (tangential stress/normal stress at failure) varies between 0.3 and 0.7 with orientation of the sample with respect to the maximum compressive stress. This reflects different fracture modes: when the foliation is favorably oriented, fractures develop along it and the rocks are weak, whilst when fractures cut
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27

Dempsey, Edward Damien. "The kinematics, rheology, structure and anisotropy of the Alpine schist derived Alpine fault zone mylonites, New Zealand." Thesis, University of Liverpool, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.539562.

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28

Ebert, Andreas. "Microfabric evolution in pure and impure carbonate mylonites and their role for strain localization in large-scale shear zones /." Bern : Universität Bern, Philosophisch-naturwissenschaftlichen Fakultät, 2006. http://www.ub.unibe.ch/content/bibliotheken_sammlungen/sondersammlungen/dissen_bestellformular/index_ger.html.

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29

Swanson, Erika M. "The Day Nui Con Voi mylonitic belt in Southwestern China and Its implications for the early Cenozoic extrusion of Indochina." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/114337.

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Thesis: S.B., Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences, 2007.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 42-43).<br>The early Cenozoic India-Asia collision resulted in the extrusion of large crustal fragments southeast from the Eastern Himalayan syntaxis, with large shear zones at their boundaries that could have accommodated displacements of hundreds to perhaps a thousand kilometers. Along the northeastern edge of the Indochina extruded fragment, the belt of mylonitic metamorphic rocks generally
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30

Hentschel, Felix [Verfasser], and Claudia [Akademischer Betreuer] Trepmann. "Deformation and reactions in mylonitic pegmatites from the Austroalpine basement south of the western Tauern Window / Felix Hentschel ; Betreuer: Claudia Trepmann." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2020. http://d-nb.info/1205665196/34.

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31

Tu, Ching. "Mean kinematic vorticity of retrograde mylonite in the Brevard fault zone, South Carolina." 2009. http://etd.utk.edu/2009/May2009Theses/TuChing.pdf.

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Thesis (M.S.)--University of Tennessee, Knoxville, 2009.<br>Title from title page screen (viewed on Nov. 4, 2009). Thesis advisors: Robert D. Hatcher, Micah J. Jessup. Vita. Includes bibliographical references.
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32

Wang, Zhijing. "GIS-based fractal/multifractal modelling of texture in mylonites and banded sphalerite ores /." 2008. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:NR46019.

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Thesis (Ph.D.)--York University, 2008. Graduate Programme in Earth and Space Science and Engineering.<br>Typescript. Includes bibliographical references (leaves123-134). Also available on the Internet. MODE OF ACCESS via web browser by entering the following URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:NR46019
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33

Regan, Sean P. "Deciphering the Age and Significance of the Cora Lake Shear Zone: Athabasca Granulite Terrane, Northern Saskatchewan." 2013. https://scholarworks.umass.edu/theses/988.

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Interpreting the tectonic significance of high strain zones requires detailed knowledge of the P-T-t-D history of rocks on either side and of tectonized rocks within the shear zone. In-situ monazite geochronology is particularly useful because it generates a time-integrated framework of metamorphism and fabric development. This can be achieved by correlating monazite compositional domains with the growth and consumption of major phases. Furthermore, monazite can be a fabric forming mineral, and can be directly linked to structural fabrics and kinematics. The Cora Lake shear zone (CLsz) represe
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34

Joye, Jean Bernard. "L'évolution pression-température-déformation dans le massif des Aiguilles Rouges, massif externe alpin." Phd thesis, 1989. http://tel.archives-ouvertes.fr/tel-00822947.

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L'analyse structurale de la géométrie et de la cinématique ainsi que le métamorphisme d'un secteur du massif des Aiguilles Rouges permettent de reconstruire l'évolution tectonométamorphlque du massif au cours de l'orogenèse varlsque. Cette évolution correspond à des événements orogéniques d'âge Dévonien et d'âge Carbonifère qui sont nettement distingués. Les événements d'âge Dévonien sont caractérisés par deux phases de déformation DI et D2. La schistoslté SI est relictuelle, préservée dans des mlcrolithons dans la schlstoslté S2. La déformation D2 se marque par une forte schistoslté S2 suppor
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35

Singleton, John Selwyn. "Kinematic and geometric evolution of the Buckskin-Rawhide metamorphic core complex, west-central Arizona." 2011. http://hdl.handle.net/2152/14374.

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Reconstructing the structural evolution of metamorphic core complexes is critical to understanding how large-magnitude extension is accommodated in the middle to upper crust. This dissertation focuses on the Miocene geometric and kinematic evolution of the Buckskin-Rawhide metamorphic core complex in west-central Arizona, addressing controversial topics including the geometric development of mid-crustal shear zones, the formation of detachment fault corrugations, and the transition from detachment faulting to more distributed deformation. Detailed microstructural data from mylonites in the lo
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36

Simpson, C. A. "Constraints on Proterozoic crustal evolution from an isotopic and geochemical study of clastic sediments of the Gawler Craton, South Australia." Thesis, 1994. http://hdl.handle.net/2440/88297.

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This item is only available electronically.<br>The Gawler Craton comprises tocks varying in age from Archaean to more recent Phanerozoic sediments. The rocks of greatest interest in defining processes of early crustal formation and evolution in the Australian continent, are the basement material older than approximately 1400 Ma (pre-cratonisation), comprising deformed and metamorphosed rocks suites of Archaean and Proterozoic metasediments and gneisses. These suites span an immense period of intense geological history, and as such are a topic of much past and present study. Detailed mapping i
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37

Kopf, Christopher Frederick. "Deformation, metamorphism, and magmatism in the East Athabasca mylonite triangle, northern Saskatchewan: Implications for the Archean and Early Proterozoic crustal structure of the Canadian Shield." 1999. https://scholarworks.umass.edu/dissertations/AAI9932323.

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The East Athabasca mylonite triangle (EAMT) is a well exposed region of granulite facies mylonitic rocks along the trace of the Snowbird tectonic zone in northern Saskatchewan. The region was deformed and metamorphosed in a lower crustal shear zone during an episode of intense magmatic intrusion and advective heating at 2.6 Ga. The EAMT can be divided into three major domains which are remarkably different in rock type, structural fabric orientation, and metamorphic history. Rocks in the southeastern domain consist mainly of early tonalitic gneisses and syntectonic mafic dikes that were metamo
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38

Cao, Shuyun. "Cenozoic tectonic deformation, thermochronology and exhumation of the Diancang Shan metamorphic massif along Ailao Shan-Red River shear zone, southeastern Tibet, China." Thesis, 2010. http://hdl.handle.net/11858/00-1735-0000-0006-B2FA-8.

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39

Pollard, Brittney Maryah. "Reactivation of fractures as discrete shear zones from fluid enhanced reaction softening, Harquahala metamorphic core complex, west-central Arizona." Thesis, 2014. http://hdl.handle.net/2152/25744.

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Discrete (mm- to m-scale) mylonitic shear zones in the northeastern Harquahala metamorphic core complex, Arizona, show evidence of fluid-mineral interactions catalyzing deformation and metamorphism. Many contain a deformed central epidote vein with adjacent bleached haloes and flanking paired shear zones that indicate significant fluid-rock interaction during deformation. An integration of structural and geochemical methods was employed to understand timing, metamorphic conditions, and physiochemical processes responsible for producing the discrete shear zones. Field and microstructural eviden
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40

Grotenhuis, Saskia Martine ten [Verfasser]. "Mica fish in mylonites : deformation mechanisms and implications for rheology / Saskia Martine ten Grotenhuis." 2000. http://d-nb.info/96136288X/34.

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41

Stopen, Lynne E. "Geometry and Deformation History of Mylonitic Rocks and Silicified Zones Along the Mesozoic Connecticut Valley Border Fault, Western Massachusetts." 1988. https://scholarworks.umass.edu/theses/3525.

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The Connecticut Valley border fault is a major, probably listric, west-dipping normal fault, that uplifted Precambrian to Devonian schists and gneisses of the Pelham Dome on the east, and formed a lowland to the west where Triassic and Jurassic sediments accumulated. It extends from northwestern New Hampshire south to Long Island Sound. Five kilometers of vertical displacement, and dips of 20 to 40 degrees have been estimated for central Massachusetts. Mylonitic and silicified rocks were examined from the Village of Millers Falls, in north-central Massachusetts, south to Belchertown, in centra
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42

Trullenque, Ghislain. "Tectonic and microfabric studies along the Penninic Front between Pelvoux and Argentera massifs (Western Alps, France)." Phd thesis, 2005. http://tel.archives-ouvertes.fr/tel-00769805.

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