40Ar/39Ar age of Mendanha Alkaline Intrusion, Rio de Janeiro, Brazil

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40Ar/39Ar age of Mendanha Alkaline Intrusion, Rio de Janeiro, Brazil

The Mendanha Alkaline Intrusion is one of many alkaline occurences of the Southeastern Brazil Alkaline Province. It comprises plutonic rocks (alkali-syenites and syenites) and hypabyssal types (trachytes and ignibrites). In this work is presented new 40 Ar/ 39 Ar ages for this massif. The last repor...

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Bibliographic Details
Main Authors:	Mota, C., Geraldes, M., Jourdan, Fred
Format:	Journal Article
Published:	Laboratorio Nacional de Energia e Geologia 2014
Online Access:	http://www.lneg.pt/download/9527/29_3037_ART_CG14_ESPECIAL_I.pdf http://hdl.handle.net/20.500.11937/44635

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