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Age, Sr and Nd-Isotope Systematics, and Origin of Two Fluorite Lodes, Sierras Pampeanas, Argentina

Impacto



Galindo Francisco, Mª del Carmen y Pankhurst, R.J. y Casquet, César y Coniglio, Jorge y Baldo, Edgardo G. y Rapela, Carlos W. y Saavedra, Julio (1997) Age, Sr and Nd-Isotope Systematics, and Origin of Two Fluorite Lodes, Sierras Pampeanas, Argentina. International geology review, 39 (10). pp. 948-954. ISSN 0020-6814

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URL Oficial: http://www.tandf.co.uk/journals/TIGR



Resumen

Fluorite mineralization at the La Nueva and Bubu mines yields Sm-Nd ages of 131 ± 22 and 117 ± 26 Ma, respectively. Thus, the mineralization most probably is related to a late Gondwanian (Lower Cretaceous) extensional and magmatic event that affected the Sierras Pampeanas basement during the opening of the Atlantic Ocean. Hydrothermal fluids involved in the formation of the fluorite probably were of meteoric origin, their isotopic composition (Sr and Nd) resulting largely from the incongruent dissolution of feldspars in the host porphyritic granites.


Tipo de documento:Artículo
Palabras clave:Fluorite mineralization; Sierra Pampeana; Argentina
Materias:Ciencias > Geología > Geoquímica
Código ID:12104
Depositado:31 Ene 2011 09:58
Última Modificación:31 Ene 2011 09:58

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