@article{10272/8980, year = {2003}, url = {http://hdl.handle.net/10272/8980}, abstract = {Sm-Nd garnet geochronology of a migmatite gneiss from the Sierra de las Imanas (Western Sierras Pampeanas) has provided a peak metamorphic age of 464.6 ± 4.5 Ma, i.e., Middle Ordovician, corresponding to the Famatinian orogeny of Western Argentina This age agrees with metamorphic ages obtained in nearby areas by U-Pb SHRIMP dating of zircon overgrowths. This coincidence confirms the reliability of the Sm-Nd garnet chronometer in the study of metamorphic terranes. A Proterozoic Toxt age of 1628 Ma suggests the involvement of an old recycled crustal component in the sedimentary protolith of the migmatite}, publisher = {Sociedad Geológica de España}, title = {Datación Sm-Nd del metamorfismo en ía Sierra de las Imanas (Sierras Pampeanas Occidentales, Argentina)}, title = {Sm-Nd dating of metamorphism of the Sierra de las Imanas (Sierras Pampeanas Occidentales, Argentina)}, author = {Galindo, Carmen and Murra, J. and Baldo, Edgardo G. and Casquet Martín, César and Rapela, C. and Pankhurst, R. J. and Dahlquist, J. A.}, }