From olivine nephelinite, basanite and basalt to peralkaline trachyphonolite and comendite in the Ankaratra volcanic complex, Madagascar: 40Ar/39Ar ages, phase compositions and bulk-rock geochemical and isotopic evolution

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From olivine nephelinite, basanite and basalt to peralkaline trachyphonolite and comendite in the Ankaratra volcanic complex, Madagascar: 40Ar/39Ar ages, phase compositions and bulk-rock geochemical and isotopic evolution

The Ankaratra volcanic field covers an area of ~ 3800 km2 in central Madagascar and comprises of lava flows, lava domes, scoria cones, tuff rings and maars emplaced at different ages (Miocene to Recent). The volcanic products include ultramafic-mafic (olivine-leucite nephelinite, basanite, alkali ba...

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Bibliographic Details
Main Authors:	Cucciniello, C., Melluso, L., le Roex, A., Jourdan, Fred, Morra, V., de Gennaro, R., Grifa, C.
Format:	Journal Article
Published:	Elsevier BV 2017
Online Access:	http://hdl.handle.net/20.500.11937/50288

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