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Conference papers

A Syntectonic Alkaline Massif in Burundi: Geology, Fluid-Rock Interaction and Element (REE, HFSE) Mobility

Philippe Boulvais 1 Corentin Cobert 2 Jean-Marc Baele 3, 2 Luc Tak Gérard Nimpagaritze 4 Gilbert Midende 5 Véronique Gardien 6 Daniel Demaiffe 7 Sophie Decrée 8
1 GR - Géosciences Rennes
2 UMons - Université de Mons
3 Géologie GFA
Geology and Applied Geology
4 Department of African Zoology [Tervuren]
5 Faculté des Sciences
6 LGL-TPE - Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement [Lyon]
7 ULB - Université libre de Bruxelles
8 RBINS - Royal Belgian Institute of Natural Sciences
Abstract : Alkaline massifs worldwide are generally atectonic. In Burundi, during the break-up of Rodinia, 700 Ma ago, the Upper Ruvubu Alkaline Plutonic Complex emplaced syntectonically. Large shear zones affecting the intrusion accommodated a regional NE-SW shortening in the regional extensional setting associated with Rodinia breakup. Magmatic dykes and magmato-hydrothermal mineralized veins strike NE-SW and have accommodated NW-SE stretching. C and O isotope characterization of the central Matongo carbonatite body attests for superimposed hydrothermal alterations, which induced REE and HFSE mobilizations on various scales.
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https://hal-insu.archives-ouvertes.fr/insu-01336618
Contributor : Isabelle Dubigeon Connect in order to contact the contributor
Submitted on : Thursday, June 23, 2016 - 2:05:10 PM
Last modification on : Wednesday, May 11, 2022 - 4:13:12 AM

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  • HAL Id : insu-01336618, version 1

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INSU | CNRS | GR | LGL-TPE | UNIV-RENNES1 | OSUR | ENS-LYON | GR-3T | UNIV-LYON1 | UNIV-RENNES | UDL | UR1-ENV | RIGL | AFRIQ | UR2-HB | UNIV-RENNES2 | INRAE

Citation

Philippe Boulvais, Corentin Cobert, Jean-Marc Baele, Luc Tak, Gérard Nimpagaritze, et al.. A Syntectonic Alkaline Massif in Burundi: Geology, Fluid-Rock Interaction and Element (REE, HFSE) Mobility. SGA2015: 13th Biennial meeting, Aug 2015, Nancy, France. pp.993-996. ⟨insu-01336618⟩

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