 | | Journal (article/letter/editorial) | | Ackermand Tectonic framework of the Precambrian of Madagascar and its Gondwana connections: a review and reappraisal...1993/Accepted: 31 January 1994 Abstract The Precambrian of Madagascar is divided into two sectors by the north-west...marbles) of Kibaran age are present in western Madagascar. Two partly greenschist grade sedimentary groups...basement in north-east Madagascar. Isotopic age data suggest the presence in Madagascar of Archaean, Early...Universitaire d'Ambohitsaina, BP 906, Antananarivo, Madagascar T. Razakamanana D6partement de Sciences Naturelles |  | | Journal (article/letter/editorial) | | Ackermand Tectonic framework of the Precambrian of Madagascar and its Gondwana connections: a review and reappraisal...1993/Accepted: 31 January 1994 Abstract The Precambrian of Madagascar is divided into two sectors by the north-west...marbles) of Kibaran age are present in western Madagascar. Two partly greenschist grade sedimentary groups...basement in north-east Madagascar. Isotopic age data suggest the presence in Madagascar of Archaean, Early...Universitaire d'Ambohitsaina, BP 906, Antananarivo, Madagascar T. Razakamanana D6partement de Sciences Naturelles |  | | Journal (article/letter/editorial) | | Tectono-Minerogenetic Unitsof the Basement of Madagascar JEAN CHANTRAINE * AND LUIGI RADELLI** Abstract...defined orogen and to some tectonic basementof Madagascar(Besairie, 1966), but ex- zone of each orogen...article the followingnoteswill suffice. Survey of Madagascar who helped in collecting the data The oro#eniescorrespondto... TECTONO-MINEROGENETIC Fig.1 TECTONIC OF THE OF UNITS OF MADAGASCAR 691 MAP BA3EIV!ENT MADAGA3CAR 200kin LEGEND...rerno Ikalarnavony sedimentarycover E•enalo Fort- Dauphin Maha-Vavatenina Manarnp?tsy Arrn,l•atolarn |  | Tucker, R.D., Roig, J.Y., Macey, P.H., Delor, C., Amelin, Y., Armstrong, R.A., Rabarimanana, M.H., Ralison, A.V. (2011) A new geological framework for south-central Madagascar, and its relevance to the “out-of-Africa” hypothesis. Precambrian Research, 185 (3) 109-130 doi:10.1016/j.precamres.2010.12.008 | Journal (article/letter/editorial) | | A new geological framework for south-central Madagascar, and its relevance to the “out-of-Africa” hypothesis...Gouvernance des Ressources Minerales, 101 Antananarivo, Madagascar b c a r t i c l e i n f o Article history:...a c t The Precambrian shield of south-central Madagascar, excluding the Vohibory region, consists of three...the orogen is the Betsimisaraka Suture of east Madagascar (Collins et al., 2000a; Kröner et al., 2000)...medial Proterozoic sedimentary sequence in central Madagascar (Itremo Group, Moine, 1967, 1968, 1974), containing |  | | Journal (article/letter/editorial) | | late Precambrian deformation history in southern Madagascar Jean-Emmanuel Martelat a,b,*, Jean-Marc Lardeaux...Uni6ersité d’Antananari6o, BP 906, Antananari6o, 101, Madagascar Received 29 December 1998; accepted 5 October...Precambrian times, with an example from southern Madagascar. The finite strain pattern is derived from the...high temperatures were ubiquitous in southern Madagascar. By contrast, regional pressure differences were...general discussion]. The Precambrian belt of Madagascar represents a more-or-less continuous section |  | | Journal (article/letter/editorial) | | Transpressive Regime: an Example from Southern Madagascar J. E. MartelaP, J.M. Lardeaux l, C. Nicollet2...accepted Februauy 24, 1999) Introduction In Madagascar, a preserved section of continental crust is...southern part of Madagascar (Fianarantsoa-IhosyAmpanihy-Fort Dauphin, Fig. 1). Madagascar, a part of Gondwana...Pattern The finite strain pattern of southern Madagascar was derived from thc study of satellite images...geochronological data in the southern part of Madagascar. This tectonic map is based on satellite imaging |  | | Journal (article/letter/editorial) | | SUD DE MADAGASCAR 175 UN CHRISTIAN NICOLLET Centre Universitaire Rdgional de Tuldar (Madagascar) et Laboratoire...dans le sud de Madagascar. Precambrian Res., 28: 175--185. Le Pr~cambrien de Madagascar repr~sente une...thermobarom~triques tr~s precis dans le sud de Madagascar. Cet ~pisode migmatitique pourrait appartenir...tracer in southern Madagascar. 'Precambrian Res., 28: 175--185. The Precambrian of Madagascar appears t o be...thermobarometric reference levels in southern Madagascar. This migmatic event may be contemporary with |  | | Report (issue) | | 0.29 1.80 Total 99.84 (1) Betroka, Madagascar. (2) Galle district, Sri Lanka. Polymorphism & Series:...heavy mineral concentrates. Association: Thorite, zircon, ilmenite, cassiterite, allanite (Sri Lanka); phlogopite...phlogopite, diopside, spinel (Andolobe, Madagascar). Distribution: In Sri Lanka, at Balangoda and near...Kondrugala; in the Galle district; at Bambarabotuwa; and elsewhere. In Madagascar, very large crystals from...from Taolan̈aro (Fort Dauphin); at Andranondambo, Antanimora, Betroka, Andolobe, and other localities |  | Montel, Jean -Marc, Razafimahatratra, Dieudonné, Ralison, Bruno, De Parseval, Philippe, Thibault, Michel, Randranja, Roger (2011) Monazite from mountain to ocean: a case study from Trolognaro (Fort-Dauphin), Madagascar. European Journal of Mineralogy, 23 (5) 745-757 doi:10.1127/0935-1221/2011/0023-2149 | Journal (article/letter/editorial) | | ocean: a case study from Trolognaro (Fort-Dauphin), Madagascar JEAN-MARC MONTEL1,*, DIEUDONNÉ RAZAFIMAHATRATRA2...Normale Supérieure, Université d’Antanarivo 101, Madagascar 3 Département des Sciences de la Terre, Faculté...Faculté des Sciences, Université d’Antanarivo 101, Madagascar 4 LMTG, Université de Toulouse CNRS-IRD, 15...Polytechnique, Université d’Antanarivo 101, Madagascar Abstract: We report results for 18 samples of...of the Ifaho River, near Trolognaro (Fort Dauphin), Madagascar. This valley, approximately 50 km long |  | Lardeaux, J.M., Martelat, J.E., Nicollet, C., Pili, E., Rakotondrazafy, R., Cardon, H. (1999) Metamorphism and Tectonics in Southern Madagascar: An Overview. Gondwana Research, 2 (3) 355-362 doi:10.1016/s1342-937x(05)70274-4 | Journal (article/letter/editorial) | | Reseiirch Metamorphism and Tectonics in Southern Madagascar : An Overview J.M. Lardeauxl, J.E. Martelatl...mc~tamorpliicevolution of tlie continental crust from southern Madagascar. After a presentation of the main geophysical...Metamorphism, strain pattern, tectonics, soutliern Madagascar. Introduction Geological Outline Knowledge...general discussion ). The Precambrian belt of Madagascar offers a more or less continuous section in granulites...advances obtained on the geology of southern Madagascar and to present a n overview of its Pan-African |  | | Report (issue) | | The Natural History Museum of Milan and its Madagascar Collection The Museo Civico di Storia Naturale... the museum began paleontologic fieldwork in Madagascar (upper Permian fauna and Jurassic and Cretaceous...fieldwork in Madagascar in 1996 in collaboration with other institu tions in Madagascar, Italy, and the...Pezzotta has spent a total of twenty nine months in Madagascar making geological-mineralogical surveys. In collaboration...both classic and new minerals and gemstones from Madagascar opened at the Natural History Museum in Milan |  | | Journal (article/letter/editorial) | | URANIUM-BEARING PEGMATITES OF THE ANTSIRABE-KITSAMBY DISTRICT, MADAGASCAR WESTON BOURRET* Box 409, Pauma Valley, CA...Uranium-bearing pegmatites of the Antsirabe-Kitsamby district, Madagascar. In: J.W. Gabelman (Editor), Unconventional...Uranium Deposits. Ore Geol. Rev., 3:177-191. Madagascar, sixth largest island in the world, is about...Vinaninkarena, south of Antsirabe in Central Madagascar. Interest in radium stimulated search for primary...Ambatolampykely and Vorondola in the Kitsamby district. A map or a section of each deposit is provided |  | | Report (chapter) | | 2015 Neoproterozoic deformation in central Madagascar: a structural section through part of the East...de la Terre, Universitd de Toliara, Toliara, Madagascar 4 Present address." Institute for Frontier Research...Deceased Abstract: The Itremo region of central Madagascar has an importance in the evolution of the East...between the northern Bemarivo Belt and central Madagascar. Over the last decade knowledge of Pre-Cambrian...Gondwana (Lawver et al. 1998; Reeves & de Wit 2000), Madagascar lies within the EAO (Fig. 1), close to the NE |  | | Journal (article/letter/editorial) | | granitic pegmatites? Clues from hybrid pegmatites in Madagascar Robert F. Martin,1,* Caterina De Vito,2 and Federico...Anjanabonoina “hybrid” granitic pegmatite in Madagascar. The NYF assemblages there and at the Sakavalana...geochemistry, trace elements, Anjanabonoina, Sakavalana, Madagascar Introduction A K-dominant alkali feldspar, either...gem-bearing granitic pegmatites in central and southern Madagascar. Background information Anorogenic granites...The geological context in south-central Madagascar Madagascar was centrally located in the collisional |  | | Journal (article/letter/editorial) | | regions of the CDML and the recently determined U-Pb zircon dates by Jacobs et al. (1998). The palaeomagnetically...metapelite-quartzite-calcsilicate slivers) are confirmed by U-Pb zircon chronology (Jacobs et al., 1998) attesting to a...date for the metamorphic zircon overgrowth around a -608 Ma magmatic zircon from these charnoenderbitic...cooling. Similarly, a -515 Ma U-Pb date of magmatic zircon and a 513 Ma Rb-Sr date from the late/post orogenic... Granulites from the Precambrian of Southern Madagascar: Implications for the Evolution of the Deep Crust |  | | Journal (article/letter/editorial) | | elbaite-schorl series. Madagascar Mozambique The granite pegmatites of the district of Zamb6zia in northern...mine near the south shore of Madagascar, west of the town Fort Dauphin. The mine :onsists of a quarry...53:42:5 (microprobe analysis); pinkish, prismatic zircon; traces of brown sphene. Data for the composition...physical properties of tourmaline fvcm Itakefa, Madagascar. 3. XY~ Z~; B3 Si60z7 (O,OH,F)4. Analysis by...hajji of uvite from the Itakefa thorianite mine, Madagascar. B F 17.77 15.2 I 0.40 0.05 11.21 0.15 0.02 |  | | Journal (article/letter/editorial) | | ultrahigh temperature granulites of southern Madagascar in a polymetamorphic context: implications for...Graphite group and Androyan group in Southern Madagascar, south of the prominent Ranotsara shear zone...zone, and we performed U-Pb SHRIMP dating on zircon and U-Th-total Pb dating on monazite. Widespread high-temperature...metamorphic event at 650–600 Ma (M1) in monazite cores. Zircon generally shows both metamorphic ages. Therefore...Key-words: East African Orogen, Gondwana assembly, Madagascar, metapelite, orthopyroxene-sillimanite-quartz |  | | Journal (article/letter/editorial) | | Gondwana Research Juxtaposition of India and Madagascar: A Perspective M. Yoshidal, H. M. Rajeshl and...Abstract Proterozoic terrains in South India and Madagascar provide important clues in understanding tlie...Pan-African period. The Archaean terrains in both Madagascar and India are characterized by N-S trending greenstone...remains to be identified in future studies from Madagascar. The occurrence of greenschist facies rocks in...of other parts in the north-central terrain of Madagascar is comparable with the general tendency of increasing |  | Montel, Jean-Marc, Razafimahatratra, Dieudonne, de Parseval, Philippe, Poitrasson, Franck, Moine, Bernard, Seydoux-Guillaume, Anne-Magali, Pik, Raphaël, Arnaud, Nicolas, Gibert, François (2018) The giant monazite crystals from Manangotry (Madagascar) Chemical Geology, 484. 36-50 doi:10.1016/j.chemgeo.2017.10.034 | Journal (article/letter/editorial) | | The giant monazite crystals from Manangotry (Madagascar) Jean-Marc Montel, Dieudonne Razafimahatratra...The giant monazite crystals from Manangotry (Madagascar). The address for the corresponding author was...The giant monazite crystals from Manangotry (Madagascar) Jean-Marc Montel Ecole Nationale Supérieure...Abstract The Manangotry area in the South-East of Madagascar is famous for its giant monazite crystals. The...2012; NU Goncalves et al., 2016). Southern Madagascar is situated South of the Bongolava-Ranotsara |  | | Report (chapter) | | granitic pegmatites from the Tranomaro belt, SE Madagascar; boron-fluid evolution THÉODORE RAZAKAMANANA1...la Terre, Université de Toliara 601, Toliara, Madagascar 2 Department of Geology, University of Leicester...high-grade rocks of the Tranomaro belt in southeastern Madagascar. The mutual occurrence of these phases allows...multiple borosilicates. The Precambrian basement of Madagascar forms part of the East African orogen (Stern...(Lardeaux et al. 1999; Collins 2000, 2006). In Madagascar that collision zone is marked by the Betsimisaraka |  | | Journal (article/letter/editorial) | | 3 – 16 www.elsevier.com/locate/gr GR Focus Madagascar and the amalgamation of Central Gondwana Alan...2005 Available online 10 January 2006 Abstract Madagascar lay in an interesting position in Gondwana, straddling...palaeogeography of the eastern Mozambique Ocean. Madagascar consists of a number of tectonic units that amalgamated...Elsevier B.V. All rights reserved. Keywords: Madagascar; Gondwana; Azania; Tectonics; Geochronology ... . . . . . . . . . . . . . Tectonic units of Madagascar . . . . . . . . . . . . . . . . . . . . . . |  | | Report (volume) | | deposit at Steenkampskraal, in the Van Rhynsdorp district, South Africa, provided most of the free world's...apatite, sphene, allanite, thorite, monazite, and zircon, and some is deposited in intergranular films in...the quartz bostonite dikes of the Central City district, Colorado, which contain as much as 400 ppm Th...dikes, each about 10 feet thick, in the Powderhorn district, Colorado, contain 0.06 to 0.2 percent Th0 2 •...addition, the carbonate rocks in the Mineral Hill district, Ida:ho, have some features resembling carbonatite |  | | Book | | 6 83 Corundum 42 Pectolite 3 Chondrodite Zircon Analcite 41 Anthophyllite - Gedrite 1 82 ...28. Kilchrist, Skye, Scotland; magnifi- Zircon Zircon ZrSiQ4 = Symmetry Tetragonal ( + ) 1-923-...1-923- 1-960 RI 1-968- Birefringence Zircon = 2015 0042-0065 commonly occurs in rather small...light, but is The upper shows rather large zircon crystals associated with sphene in a fine- grained...distinguish it is very difficult to from the zircon. The good cleavages are well displayed in some |  | | Journal (article/letter/editorial) | | (sakenites) from the type locality in southern Madagascar M. M. RAITH,1 R. RAKOTONDRAZAFY2 AND P. SENGUPTA3...Terre, Université d ÕAntananarivo, Antananarivo, Madagascar 3 Department of Geological Sciences, Jadavpur...of the Sakena river to the NW of Ihosy, south Madagascar. The exposure has been revisited and subjected...rocks; metasomatism; phlogopitites; southern Madagascar; spinelsapphirine coronas. INTRODUCTION Enigmatic...Siriwardena, 1988; and the Fort Dauphin-Anosyan complex of southern Madagascar: Rakotondrazafy et al., 1996) |  | | Book | | ......................................... 38 Madagascar .................................. ............including: AVR in Julich, Germany; Peach Bottom and Fort St. Vrain in the US; Dragon project at Winfrith...solution in various accessory minerals, particularly zircon, monazite, and thorite. The bulk of the uranium...solid solution in thorite, thorianite, monazite, zircon, brannerite, and various niobate-tantalate minerals...the radioactivity lies in the accessory minerals zircon, titanite, apatite, allanite, xenotime, and monazite |
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Fort-Dauphin, Taolagnaro District, Anosy, Madagascar