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Dissertations / Theses on the topic 'Ophiolite troodos'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Smith, G. C. "Physical properties of deep drillcore, Troodos ophiolite, Cyprus." Thesis, University of East Anglia, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376072.

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2

Chum, Chun-yip, and 覃進業. "Cumulate pyroxenite and pyroxenite dykes in the Troodos ophiolite, Cyprus." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2014. http://hdl.handle.net/10722/197511.

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The Troodos ophiolite is a type example of ophiolite and has been studied for more than 50 years. Albeit numerous findings have been derived from previous investigations, some questions about the details of its formation processes are still outstanding. One of them concerns the origin of the pyroxenites in the mantle and the lower crustal section, and this is the main theme of this thesis. Integrated field, petrographical and geochemical work was conducted in this study. On the basis of distribution, the pyroxenites can be divided into two categories, crustal pyroxenites and mantle pyroxenite

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3

Allerton, W. S. Q. "Palaeomagnetic and structural studies of the Troodos Ophiolite, Cyprus." Thesis, University of East Anglia, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.381054.

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4

Lai, Chun-kit, and 黎俊傑. "Genetic relations between gabbros and sheeted dykes in the Troodos ophiolite, Cyprus." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2011. http://hub.hku.hk/bib/B46089147.

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5

Cooper, Nicholas John. "Integrated geophysical exploration of the north east Troodos Ophiolite, Cyprus." Thesis, University of Leicester, 1993. http://hdl.handle.net/2381/35007.

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Troodos Ophiolite is a remnant of Tethyan oceanic crust of Cretaceous age with well-preserved but complex extensional tectonics along its northern flank. Recent geological studies have provided improved models for the formation and extension environment of Troodos and its associated mineralisation. A geophysical program of seismic refraction, electromagnetic (MT-TEM) and potential field exploration has evaluated and developed aspects of these models. Analysis of aeromagnetic, satellite, and regional geophysical datasets suggests that the Solea and younger Larnaca ridge structures are comprised

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6

Richards, H. G. "Petrology and geochemistry of hydrothermal alteration pipes in the Troodos Ophiolite, Cyprus." Thesis, University of Newcastle Upon Tyne, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376218.

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7

Cowan, Jonathan Glenn. "Geochemistry of reaction zone source rocks and black smoker fluids in the Troodos ophiolite." Thesis, University of Newcastle Upon Tyne, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.417479.

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8

Young, Ella C. "Volcanology of the Troodos Ophiolite (Cyprus) and mechanisms of accretion of the upper oceanic crust." Thesis, Cardiff University, 2014. http://orca.cf.ac.uk/73633/.

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Seafloor spreading at mid-ocean ridges is accommodated by a combination of magmatic accretion and tectonic stretching of the lithosphere. Recent investigations of mid-ocean ridges show evidence for large-offset normal faults or detachments that accommodate a significant portion of the plate separation. Once thought of as rarities along the global spreading system, detachment faults are now considered to play an integral role in seafloor spreading at slow- and ultra-slow-spreading ridges. Estimates of the proportion and extent of tectonic spreading however vary widely; some authors suggest as m

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9

Teagle, Damon Andrew Herbert. "A study of hydrothermal alteration of the Troodos ophiolite, Cyprus : petrological, geochemical and strontium isotopic constraints." Thesis, University of Cambridge, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.282928.

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10

Parvaz, Daniel Bijan. "Oxidation zones of volcanogenic massive sulphide deposits in the Troodos Ophiolite, Cyprus : targeting secondary copper deposits." Thesis, University of Exeter, 2014. http://hdl.handle.net/10871/16568.

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Gossans, the brightly coloured oxidation products of sulphide mineralised rocks, have acted as an exploration target for base and precious metals and sulphur for thousands of years. They are easily identified from remote sensing and field-based reconnaissance, and once found may be drilled to determine the character of mineralisation below. The number of targets drilled could potentially be reduced if gossans overlying significant mineralisation can be discriminated from their field relations, mineralogy and geochemistry. Previous such studies have focussed on porphyry-type systems, with less

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11

Josso, Pierre. "Investigating the potential recovery of REY from metalliferous sediments in a seafloor analogue : the Troodos ophiolite, Cyprus." Thesis, University of Southampton, 2017. https://eprints.soton.ac.uk/412576/.

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The perceived supply risk for essential materials used in the development of green energy and other state-of-the art technologies creates the need for investigation of new sources for these raw materials. Many of these raw materials are characterized as “critical” given supply risks posed by geographic location, the economic and political stability of producing countries, potential substitution and opportunities for recycling [European Commission, 2014]. At present, 20 raw materials are listed by the EU as critical and this inventory is likely to grow in the coming years as the world populatio

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12

Zirner, Aurelia [Verfasser]. "Fluid driven processes in the crust - the formation of anorthositic dykes in the Troodos ophiolite (Cyprus) / Aurelia Zirner." Bonn : Universitäts- und Landesbibliothek Bonn, 2017. http://d-nb.info/1149154020/34.

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13

Beynon, J. "Mineral reactions and isotopic tracer transport in the Troodos ophiolite as analogues of hydrothermal systems at mid-ocean ridges." Thesis, University of Cambridge, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.596622.

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The structure and evolution of mid-ocean ridge hydrothermal systems and the magnitude of crustal alteration associated with different temperature fluid fluxes are poorly understood. This project has used strontium and oxygen isotopes together with metamorphic assemblages to investigate fluid flow geometry, fluid evolution and fluid-rock interaction during hydrothermal circulation in the Troodos Alteration Zone, the mesostasis has been altered to saponite but coarse clinopyroxene and plagioclase phenocrysts are unaltered. Homogeneous whole rock 90 Ma <SUP>87</SUP>Sr/<SUP>86</SUP>Sr profiles fro

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14

Banks, Graham John. "Accretion of the lower oceanic crust in the Troodos ophiolite : textural and geochemical constraints from drill core Cy-4, Cyprus." Thesis, Cardiff University, 2004. http://orca.cf.ac.uk/55376/.

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Many processes involved in the accretion of lower oceanic crust remain enigmatic. To investigate some of these processes, the principal focus of this study is drill core 'CY-4', an unbroken 2.2km long section through sheeted dykes and mafic and ultramafic cumulates of the Troodos ophiolite lower crust, Cyprus. The generally accepted hypothesis states CY-4 intersected an axial magma chamber that was intruded by an off-axis pluton, based on a 'stepped' increase in clinopyroxene titanium content at 1331 m depth. This comprehensive structural, textual and trace element examination throughout CY-4

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15

Danladi, Reuben. "Integrated magnetotelluric (MT) and transient electromagnetic (TEM) studies of structural control on massive sulphide mineralisation in part of northeastern Troodos Ophiolite Complex, Cyprus." Thesis, University of Leicester, 1997. http://hdl.handle.net/2381/30461.

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The massive Fe- and Cu-sulphide mineralisation is the most valuable economic resource in the Troodos and has been explored and exploited mainly through exploratory drilling around ancient slags, gossans and old workings. The exhaustion of these superficial guides has meant a shift to locating orebodies at depth. Direct detection of orebodies by traditional geophysical methods has been difficult. Structures parallel and perpendicular to the spreading axes in the region are thought to control the localisation of the sulphide deposits. Their identification should aid indirect detection of mineral

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16

Chen, Guohui. "Provenance-related studies of Triassic-Miocene Tethyan sedimentary and igneous rocks from Cyprus." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/33185.

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Cyprus comprises three tectono-stratigraphic terranes: first, the Troodos Massif made up of Late Cretaceous oceanic lithosphere and its sedimentary cover in the centre of the island; secondly, the Mamonia Complex (and Moni Melange) a passive margin lithological assemblage in the west (and south) and thirdly, the Kyrenia Range, an active margin lithological assemblage in the north. This study focuses on the sedimentary cover of the Troodos Ophiolite in W Cyprus, the Triassic-Cretaceous sedimentary rocks of the Mamonia Complex and Late Cretaceous-Miocene igneous and sedimentary rocks in the Kyre

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17

Wake, Charles Alexander. "Geochemical mapping of the extrusive sequence of the Troodos Ophiolite, Cyprus : an investigation into the relationship between lava compositions and proximity to a paleo-subduction zone and a paleo-transform fault." Thesis, Cardiff University, 2005. http://orca.cf.ac.uk/56115/.

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Analysis of 240 samples for a wide suite of major and trace elements enable geochemical maps of the extrusive series of the Troodos Massif using ArcView 3.2 (a Geographic Information Systems application). Proxies for mantle source depletion, degree of partial melting, lithospheric component, subduction-derived input and fractional crystallisation form the basis of the maps. No substantial difference in mantle source depletion or subduction-derived component was detected between the three stratigraphically-defined lava units (Basal Group, Lower Pillow Lavas and Upper Pillow Lavas). Variation be

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18

Georgiou, Elena. "Geologie, petrologie et petrochimie du complexe plutonique de la foret d'akapnou, chypre, et des gites de chromite associes." Orléans, 1987. http://www.theses.fr/1987ORLE2033.

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L'etude cartographique en depit d'un tectonique complexe, a permis d'observer de bas en haut: sequence mantelique (harzburgites a enclaves dunitiques); sequence cumulative (dunite principale, plastiquement deformee, wchrlites, pyroxenites, gabbros et plangiogranites)

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19

Jowitt, Simon Martin. "Field, petrological and geochemical constraints on the release of base metals into hydrothermal fluids in Cyprus-type Volcanogenic Massive Sulphide (VMS) systems : an investigation of the Spilia-Kannavia epidosite zone, Troodos ophiolite, Cyprus." Thesis, University of Leicester, 2009. http://hdl.handle.net/2381/7689.

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Understanding source-deposit relationships in VMS systems is important for mineral exploration and to increase knowledge of seafloor hydrothermal processes and ocean–crust fluxes. Although it is known that metals are stripped from oceanic crust by hydrothermal fluids and redeposited in orebodies, some aspects are poorly understood. It has been proposed that metal depleted epidosites (epidote–quartz–chlorite–Fe-oxide–titanite units within sheeted dyke complexes) are source rocks for Cyprus-type VMS deposits. To test this hypothesis, the Spilia-Kannavia epidosite zone in the Troodos ophiolite, C

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20

Grand, Thierry. "Exemples de structures en extension et de leur influence sur les déformations postérieures dans le domaine téthysien (Bourg d'Oisans, Alpes occidentales françaises et Troodos, Chypre)." Phd thesis, Grenoble 1, 1987. http://tel.archives-ouvertes.fr/tel-00514374.

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La mesure systématique dans les plans striés et leur traitement statistique par la méthode des dièdres droits ont permis de mettre en évidence, dans la région de Bourg-d'Oisans, 3 épisodes d'extension, antérieurs aux phénomènes alpins. Des critères stratigraphiques permettent de préciser leur âge, soit : • au Trias, direction d'extension N-S, • au Lias inférieur p.p., direction d'extension NE-SW, • au Lias supérieur, direction d'extension W.NW-E.SE. Ces faits sont à relier à la structuration de la marge européenne de la Téthys ligure, le bassin de Bourg d'Oisans étant considéré comme la couver

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21

Grebby, Stephen Robert. "Novel applications of airborne LiDAR and multispectral data for high-resolution geological mapping of vegetated ophiolitic rocks and sedimentary cover, Troodos Range, Cyprus." Thesis, University of Leicester, 2011. http://hdl.handle.net/2381/9697.

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Practical and financial constraints associated with traditional field-based mapping are often responsible for the production of coarse-scale geological maps that lack detail and have inaccurately defined lithological contacts. Although remote sensing offers potential solutions to these constraints, conventional use of remotely sensed data is only effective when applied to barren terrain because just small amounts of vegetation cover can obscure or mask the underlying geological materials and structures. In this thesis, novel algorithms that utilise airborne Light Detection And Ranging (LiDAR)

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22

Morgan, Sally Jane. "High temperature fluid-rock interaction in oceanic crust: a study of fluid inclusions from the Trooso ophiolite and ODP/IODP Hole 1256D." Thesis, University of Leeds, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.493781.

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Fluid inclusions offer the only available samples of uncontaminated sub-seafloor fluids. To date, microthermometry of such fluid inclusions trapped in ocean crust rocks has revealed that fluids of a wide range of salinities exist in both modem and ancient hydrothermal systems. LAICPMS analyses of fluid inclusion chemistry are reported here.

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23

Gallahan, William E. "Geochronology and geochemistry of low temperature hydrothermal alteration in oceanic crust : an investigation of celadonite in the Troodos ophiolite, Cyprus." Thesis, 1996. http://hdl.handle.net/1957/26765.

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24

Ash, Christopher Henry. "Development and subsequent demise of an oceanic spreading center : the Troodos ophiolite, Cyprus /." 1990. http://collections.mun.ca/u?/theses,84264.

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25

Dunsworth, Sherry Mary. "Multiple intrusion and deformation within the northwestern quadrant of the plutonic complex, Troodos Ophiolite, Cyprus /." 1989. http://collections.mun.ca/u?/theses,74438.

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26

Van, Everdingen David Allard. "Geological development of and nature of fractures in the sheeted dyke complex of the Spilia-Politiko area, Troodos Ophiolite, Cyprus : implications for permeability in oceanic crust /." 1993. http://collections.mun.ca/u?/theses,44249.

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