Variable depletion and metasomatism in mantle xenoliths far away from subduction zone. Tortuga hill, central Patagonia Argentina

BERTOTTO GUSTAVO W.; GIOVANARDI TOMMASO; HEMOND CHRISTOPHE; MAZZUCCHELLI MAURIZIO; ZANETTI ALBERTO

Workshop; 3rd European Mantle Workshop; 2018

Cerro Tortuga is a volcanic neck located 600 km east from the Chile trench (San Jorge basin, Southern Chubut province) composed by Oligocene-Miocene basalts and gabbros (Sciutto et al. 2008). The basalts carry spinel-facies mantle xenoliths (Villar, 1975), providing insight in the mantle composition and processes.