The geological roots of South America: 4.1 Ga and 3.7 Ga zircon crystals discovered in N.E. Brazil and N.W. Argentina

We present new LA-ICP-MS in situ geochronological results for seven Eoarchean zircons dated at 3.7 Ga coming from Cretaceous ash layers of NW Argentina and one Hadean single crystal sampled within the São Francisco Craton in NE Brazil. This zircon comprises a zoned magmatic core dated at 4.1 Ga surr...

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Veröffentlicht in:	Precambrian research 2015-12, Vol.271, p.49-55
Hauptverfasser:	Paquette, J.L., Barbosa, J.S.F., Rohais, S., Cruz, S.C.P., Goncalves, P., Peucat, J.J., Leal, A.B.M., Santos-Pinto, M., Martin, H.
Format:	Artikel
Sprache:	eng
Schlagworte:	Earth Sciences Geochemistry Sciences of the Universe
Online-Zugang:	Volltext
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