INGEOSUR 20376
INSTITUTO GEOLOGICO DEL SUR
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
PRELIMINARY RESULTS ON MAFIC AND ULTRAMAFIC XENOLITHS FROM CERRO CHENQUE (S. PATAGONIA, ARGENTINA).
Autor/es:
KOZDROWSKA, D.; MATUSIAK-MALEK, M.; NTAFLOS, TH.; PUZIEWICZ, J.; BJERG, E. A.
Lugar:
Viena
Reunión:
Conferencia; 11th EGU General Assembly; 2014
Institución organizadora:
European Union of Geosciences
Resumen:
Antarctic plates beneath the South American Plate (Bjerg et al., 2005).These lavas carry ultramafic xenoliths and were erupted east of the of the active volcanic arc, occupying a backarc tectonic setting. They show typical intraplate OIB-like geochemical signatures. Peridotitic and pyroxenitic xenoliths from Cerro Chenque (southern Argentina) are oval to angular, usually up to 5 cm in diameter and the noritic ones around 10 cm. The host rocks have the composition of trachybasalts.
