Constraints on metasomatized mantle under Central South America: evidence from Jurassic alkaline lamprophyre dykes from the Eastern Cordillera, NM Argentina

In the Río Grande Valley, NW Argentina, several porphyritic panidiomorphic, ocelli-bearing dykes and sills intrude the Neoproterozoic to lower Paleozoic basement of the Eastern Cordillera. New petrographical and geochemical data permit us to classify these rocks as ocellar-analcime monchiquites, a f...

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Veröffentlicht in:	Mineralogy and petrology 2010-11, Vol.100 (3-4), p.153-184
Hauptverfasser:	Hauser, Natalia, Matteini, Massimo, Omarini, Ricardo H., Pimentel, Márcio M.
Format:	Artikel
Sprache:	eng
Schlagworte:	Cenozoic Earth and Environmental Science Earth Sciences Fractionation Geochemistry Inorganic Chemistry Jurassic Magma Mesozoic Mineralogy Original Paper Paleozoic Petrology Rifting Rocks
Online-Zugang:	Volltext
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