RT Journal Article
T1 Datación Sm-Nd del metamorfismo en ía Sierra de las Imanas (Sierras Pampeanas Occidentales, Argentina)
T1 Sm-Nd dating of metamorphism of the Sierra de las Imanas (Sierras Pampeanas Occidentales, Argentina)
A1 Galindo, Carmen
A1 Murra, J.
A1 Baldo, Edgardo G.
A1 Casquet Martín, César
A1 Rapela, C.
A1 Pankhurst, R. J.
A1 Dahlquist, J. A.
AB 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
PB Sociedad Geológica de España
YR 2003
FD 2003
LK http://hdl.handle.net/10272/8980
UL http://hdl.handle.net/10272/8980
LA spa
DS Repositorio Institucional de la Universidad de Huelva
RD 14 jul 2026