 | | Journal (article/letter/editorial) | | studies of the southern Betsimisaraka Suture, Madagascar Tsilavo Raharimahefa ⁎, Timothy M. Kusky St....southern Betsimisaraka Suture (B.S.) of southeastern Madagascar using remote sensing and field investigation...S. divides the Precambrian basement rocks of Madagascar in two parts. The western part includes Proterozoic...Gondwana; Remote sensing; Madagascar; Precambrian 1. Introduction Madagascar is one of the key areas to...evolution of Madagascar is poorly known. Precambrian rocks underlie the eastern two thirds of Madagascar, whereas |  | | Journal (article/letter/editorial) | | margin of the East African Orogen in central Madagascar夽 Alan S. Collins a,∗ , Ian C.W. Fitzsimons a...de la Terre, Université de Toliara, Toliara, Madagascar Received 25 July 2001; received in revised form...accepted 16 February 2002 Abstract The island of Madagascar straddles the poorly understood eastern margin...eastern margin of the Antananarivo block of central Madagascar and the overlying Beforona belt of the Tsaratanana...eastern Antananarivo block indicates that eastern Madagascar was a focus for deformation during the final |  | De Waele, B., Thomas, R.J., Macey, P.H., Horstwood, M.S.A., Tucker, R.D., Pitfield, P.E.J., Schofield, D.I., Goodenough, K.M., Bauer, W., Key, R.M., Potter, C.J., Armstrong, R.A., Miller, J.A., Randriamananjara, T., Ralison, V., Rafahatelo, J.M., Rabarimanana, M., Bejoma, M. (2011) Provenance and tectonic significance of the Palaeoproterozoic metasedimentary successions of central and northern Madagascar. Precambrian Research, 189 (1) 18-42 doi:10.1016/j.precamres.2011.04.004 | Journal (article/letter/editorial) | | metasedimentary successions of central and northern Madagascar B. De Waele a,b,∗ , R.J. Thomas b , P.H. Macey...Minières, Antananarivo, Madagascar i Université de Antananarivo, Antananarivo, Madagascar b a r t i c l e ...supracrustal packages in central and northern Madagascar, show that these units were deposited between...Ga age peak have been recognised in southern Madagascar. All three supracrustal successions, as well...However, potential source terranes exist outside Madagascar and on either side of the Neoproterozoic sutures |  | | 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 (issue) | | courtesy of Rio Tinto; (4) an 11.16 ct sapphire from Madagascar, GIA Collection no. 31618; (5) a 1.01 ct yellow...competitive rough diamond market. Political problems in Madagascar and a ban on gem exports from Myanmar disrupted...for gemstones. New Deposits and New Operations. Madagascar. Much of the global gem business for well over...in the middle of the decade was dominated by Madagascar. This was due in part to the Malagasy PRODUCTION...exports ended in July of 2009, the mining sector in Madagascar failed to get jump-started as a result of the |  | | Report (issue) | | ••• ••• ... ... • •• French \Vest Africa Madagascar • •• • • •• 96 • •• ••• • •• 97 ••• ...transparent yellow variety of felspa1· comes from Madagascar. Amazon-stone is an ap,ple-green variety of rriicrocline...hardness is above 7 and specific- g1 avity 3·18. Kyanite, a mineral of similar composiit ion, is very seldom... Japan, Southern Rhodesia. · Be1"yl.-Brazil, Madagascar, South-West Africa, Soutlh Mrica., United States... Agate, etc.-Uruguay, U11ited States, India, Madagascar, Canada, China. Garnet.-Ozechoslovakia, Ceylon |  | | Book (volume) | | Indo-China to Siam. ee see The pegmatites of Madagascar provide an interesting suite of gem ne als, such...favas are water-worn pebbles of tourmaline, kyanite, perovskite, rutile, chrysoberyl and anatase...usually opaque, crystals from Tanganyika and Madagascar (Figures 41 and 42). In many ruby crystals the...pegmatite vein in association with tourmaline, garnet, kyanite and euclase. The pegmatite veins penetrate lenses...chrome-rich. Similar red crystals are found in Madagascar at Gogogogo, east of the Linta river in the south-western |
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