Academic literature on the topic 'Geology – Madagascar'
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Journal articles on the topic "Geology – Madagascar"
Ashwal, Lewis D., and Robert D. Tucker. "Geology of Madagascar: A Brief Outline." Gondwana Research 2, no. 3 (July 1999): 335–39. http://dx.doi.org/10.1016/s1342-937x(05)70270-7.
Full textRambeloson, Andriamampianina Roger. "Gold in Madagascar." Gondwana Research 2, no. 3 (July 1999): 423–31. http://dx.doi.org/10.1016/s1342-937x(05)70280-x.
Full textYoshida, M., S. Muhongo, R. Rambeloson, and A. S. Janardhan. "Madagascar Within Gondwanaland: Introduction." Gondwana Research 2, no. 3 (July 1999): 333. http://dx.doi.org/10.1016/s1342-937x(05)70269-0.
Full textMercier, A., M. Rakotondrazafy, and B. Ravolomiandrinarivo. "Ruby Mineralization in Southwest Madagascar." Gondwana Research 2, no. 3 (July 1999): 433–38. http://dx.doi.org/10.1016/s1342-937x(05)70281-1.
Full textRajesh, H. M. "International Symposium on Geology and Mineral Resources of Madagascar." Gondwana Research 1, no. 3-4 (October 1998): 425–27. http://dx.doi.org/10.1016/s1342-937x(05)70868-6.
Full textMoine, Bernard, Anne Nédélec, and Enrique Ortega. "Geology and metallogeny of the Precambrian basement of Madagascar." Journal of African Earth Sciences 94 (June 2014): 1–8. http://dx.doi.org/10.1016/j.jafrearsci.2014.01.016.
Full textGrieco, G., A. Merlini, M. Pedrotti, M. Moroni, and R. Randrianja. "The origin of Madagascar chromitites." Ore Geology Reviews 58 (April 2014): 55–67. http://dx.doi.org/10.1016/j.oregeorev.2013.11.002.
Full textBozhko, N. A., and G. V. Bryantseva. "The geomorphological units of the Madagascar and their representation of underlying geology." Moscow University Bulletin. Series 4. Geology, no. 4 (August 28, 2016): 15–22. http://dx.doi.org/10.33623/0579-9406-2016-4-15-22.
Full textVOARINTSOA, N. R. G., R. COX, M. O. M. RAZANATSEHENO, and A. F. M. RAKOTONDRAZAFY. "RELATION BETWEEN BEDROCK GEOLOGY, TOPOGRAPHY AND LAVAKA DISTRIBUTION IN MADAGASCAR." South African Journal of Geology 115, no. 2 (June 1, 2012): 225–50. http://dx.doi.org/10.2113/gssajg.115.225.
Full textYoshida, M., H. M. Rajesh, and M. Santosh. "Juxtaposition of India and Madagascar: A Perspective." Gondwana Research 2, no. 3 (July 1999): 449–62. http://dx.doi.org/10.1016/s1342-937x(05)70283-5.
Full textDissertations / Theses on the topic "Geology – Madagascar"
Paul, Jonathan David. "Dynamic topography and drainage of Africa and Madagascar." Thesis, University of Cambridge, 2014. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.708248.
Full textMukosi, Ndivhuwo Cecilia. "Petrogenesis of the Ambohiby Complex, Madagascar and the role of the Marion Hotspot Plume." Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/71665.
Full textENGLISH ABSTRACT: The Cretaceous Ambohiby Complex is an alkaline ring complex located in the central part of Madagascar and covers a mountainous area of approximately 225km2. The complex intrudes into Precambrian basement gneisses and consists of the following rock types in a chronological order; gabbros, monzonite, alkali-syenite, micro-granite and granites. Both mafic and felsic rocks are dominated by sodic mineralogies. Pyroxenes are generally aegirine, aegirine-augite, and hedenbergite and commonly occur in granites, micro-granites, syenites and monzonite. In gabbros and mafic dykes, augite is the more common composition. Amphiboles are represented by bluish to brownish-green varieties with arfvedsonite to eckermannite compositions in granites, and magnesia-arfvedsonite compositions in micro-granites. Ferro-edenite is present in some alkali-syenites and monzonite. Feldspars are usually single phase and are therefore hypersolvus. In granites, micro-granites and alkali-syenites, path and string perthite is very common. Graphic intergrowth of quartz and alkali feldspars is also common in granites and some alkalisyenites. Major elements variation diagrams plotted against SiO2 indicate that the mafic and felsic rocks of the Ambohiby Complex were formed by processes similar to those of Fractional crystallization. Chondrite normalised mafic rocks have slightly positive Eu anomalies while the felsic rocks have negative Eu anomalies, indicating fractionation of plagioclase feldspars. The Chondrite normalised gabbroic rocks shared similar trends of heavy rare earth with Chondrite normalised Marion Hotspot data. This suggests that the basaltic parent magma for the Ambohiby Complex, possibly related to the Marion hotspot plume. The Fractional crystallization model with an inclusion of olivine in the mineral assemblage seems to fit very well with the actual Ambohiby felsic end member rocks (i.e. granites). It is therefore clear that differentiation mainly occurred by fractional crystallization but variable initial Sr and Nd values indicate the magmas assimilated crustal material during emplacement. The Rb-Sr geochronology gave an age of 90±2.4 Ma for the intrusion of the Ambohiby Complex, which confirms that the Ambohiby Complex is associated with the Gondwana break-up. In addition the Marion Hotspot plume is believed to have been located in the southern tip of the island at around 90 Ma ago.
Kelly, Ranald. "The distribution of fluids in amphibolite and granulite facies rocks from central Madagascar and southern West Greenland." Thesis, Royal Holloway, University of London, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.313701.
Full textGrégoire, Vincent. "CARACTERISATION PETROSTRUCTURALE DU SOCLE PRECAMBRIEN DE MADAGASCAR (PAYS BETSILEO, PROVINCE DE FIANARANTSOA) : METHODOLOGIE ET IMPLICATIONS GEODYNAMIQUES." Phd thesis, Université Paul Sabatier - Toulouse III, 1999. http://tel.archives-ouvertes.fr/tel-00367741.
Full textLa première partie du travail développe les aspects méthodologiques. L'Anisotropie de Susceptibilité Magnétique (ASM) des granites de Madagascar est contrôlée par la magnétite. Des grains de magnétite rapprochés développent des interactions susceptibles de modifier l'ASM (Grégoire et al., 1995). L'étude par traitement d'images des grains de magnétite montre que c'est l'anisotropie de forme de grains allongés qui est principalement responsable de l'ASM (Grégoire et al., 1998).
Les deux autres outils employés sont l'analyse d'image et la thermobarométrie. Deux signatures structurales distinctes sont reconnues dans la région des granites andringitréens. (D1) se caractérise par des foliations moyennement pentées vers l'ouest et des linéations à faible plongement OSO; elle est contemporaine de la mise en place de ces granites de type stratoïde qui s'accompagne d'un métamorphisme HT-BP dans l'encaissant. (D2) se caractérise par des foliations fortement pentées et des linéations NS subhorizontales dans des bandes de cisaillement anastomosées d'échelle kilométrique.
Plus au nord, une série supracrustale schisto-quartzo-carbonatée (SQC) est conservée sur le socle granitique qui présente la structure D1, alors que la SQC montre une structure différente associée à des fabriques d'axes c de quartz indiquant un déversement vers l'est.
La structure D1 est semblable à celle qui a été décrite par Nédélec et al. (1994), au nord d'Antanarivo. Il s'agirait de la phase d'extension post-collision datée à 630 Ma par Paquette & Nédélec (1998). La structure D2 résulterait d'un épisode de convergence tardi-panafricain vers 550 Ma. Seule la SQC aurait gardé les traces d'un épaississement crustal antérieur à 650Ma et qui pourrait correspondre au début de la collision panafricaine.
Goncalves, Philippe. "PÉTROLOGIE ET GÉOCHRONOLOGIE DES GRANULITES DE ULTRA-HAUTES TEMPÉRATURES DE L'UNITÉ BASIQUE D'ANDRIAMENA (CENTRE-NORD MADAGASCAR). Apport de la géochronologie in-situ U-Th-Pb à l'interprétation des trajets P-T." Phd thesis, Clermont-Ferrand 2, 2002. http://www.theses.fr/2002CLF21375.
Full textRasolofomanana, Andriaseheno Henri. "Les complexes annulaires de la province magmatique du cap saint-andre (madagascar) : geologie, petrologie et geodynamique." Clermont-Ferrand 2, 1998. http://www.theses.fr/1998CLF22077.
Full textDaso, Alain Ah Hu. "Geologie d'une plateforme carbonatee metamorphique : vallee de la sahatany, centre de madagascar, etude structurale, petrographique et geochimique." Toulouse 3, 1986. http://www.theses.fr/1986TOU30195.
Full textPorokhovoï, Evgueni. "Stabilité à long terme des talus de mines à ciel ouvert dans les massifs de roches basiques et ultrabasiques." Phd thesis, Ecole Nationale des Ponts et Chaussées, 1995. http://tel.archives-ouvertes.fr/tel-00529344.
Full textRandrianasolo, Leon Gabriel. "Structure and tectonics of the Ampanihy Group in the vicinity of the Ankafotia and Saririaky anorthosite bodies, Southwestern Madagascar." Thesis, 2014. http://hdl.handle.net/10210/11705.
Full textRandrianasolo, Leon Gabriel. "Structure and tectonics of the Ampanihy Group in the vicinity of the Ankafotia and Saririaky anorthosite bodies, Southwestern Madagascar." Thesis, 2012. http://hdl.handle.net/10210/7644.
Full textBooks on the topic "Geology – Madagascar"
Guy, Raoilison. Note sur le graphite dans le centre et sud de Madagascar. [Antananarivo, Madagascar]: Repoblika Demokratika Malagasy, Ministère de l'industrie, de l'énergie et des mines, Direction des mines et de la géologie, Service de la géologie, 1987.
Find full textRajaomazava, Félix. Etude de la subsidence du bassin sédimentaire de Morondava (Madagascar): Dans le cadre de l'évolution géodynamique de la marge est-africaine. Montpellier, France: Centre géologique et géophysique, Université des sciences et techniques du Languedoc, 1992.
Find full textD, Rabinowitz Philip, ed. Evolution of the conjugate East African-Madagascan margins and the Western Somali Basin. Boulder, Colo: Geological Society of America, 1988.
Find full textJungers, William L., 1948- author, ed. Extinct Madagascar: Picturing the island's past. 2014.
Find full textBook chapters on the topic "Geology – Madagascar"
Schreider, A. A., A. E. Sazhneva, M. S. Kluyev, and A. L. Brekhovskikh. "Split Between Madagascar and India." In Springer Geology, 159–66. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-69040-3_16.
Full textGilli, Eric. "Geology and Hydrogeology." In The Ankarana Plateau in Madagascar, 37–68. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-99879-4_4.
Full textScherba, Craig, Jean-Francois Montreuil, and C. Tucker Barrie. "Geology and Economics of the Giant Molo Graphite Deposit, Southern Madagascar." In Metals, Minerals, and Society. Society of Economic Geologists (SEG), 2018. http://dx.doi.org/10.5382/sp.21.15.
Full textCoffin, Millard F., and Philip D. Rabinowitz. "The Mesozoic East African and Madagascan Conjugate Continental MarginsStratigraphy and Tectonics." In Geology and Geophysics of Continental Margins. American Association of Petroleum Geologists, 1992. http://dx.doi.org/10.1306/m53552c12.
Full textConference papers on the topic "Geology – Madagascar"
Kravitz, Katherine, Ruohong Jiao, and Jean Braun. "LINKING CLIMATE, GEOLOGY AND LANDSCAPE EVOLUTION TO UNDERSTAND HABITAT DISTRIBUTION AND MICRO-ENDEMISM IN MADAGASCAR." In GSA Annual Meeting in Indianapolis, Indiana, USA - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018am-322377.
Full textDuyverman, Henk J., and Emma Msaky. "Shale Oil and Gas in East Africa (Esp.Tanzania) with New Ideas on Reserves and Possible Synergies with Renewables." In SPE/AAPG Africa Energy and Technology Conference. SPE, 2016. http://dx.doi.org/10.2118/afrc-2603293-ms.
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