A Syntectonic Alkaline Massif in Burundi: Geology, Fluid-Rock Interaction and Element (REE, HFSE) Mobility - INSU - Institut national des sciences de l'Univers Access content directly
Conference Papers Year : 2015

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

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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Dates and versions

insu-01336618 , version 1 (23-06-2016)

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  • HAL Id : insu-01336618 , version 1

Cite

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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