A 2-D resistivity modeling of the southern sector of the Pringles Metamorphic Complex, Sierra de San Luis

POMPOSIELLO, M.C.; LÓPEZ DE LUCHI, M. G.; FAVETTO, A.

Perugia, Italia

Congreso; IUGG XXIV General Assembly; 2007

IUGG

Ultramafic-mafic igneous intrusions of the Virorco district form part of a NNE trending belt of Ordovician mafic plutonic lenses located in the Pringles Metamorphic Complex (PMC) the central basement domain of the Sierra de San Luis (Eastern Sierras Pampeanas),where high temperature low/medium pressure (5.7-6.4 kbar/740-790ºC) granulite facies rock constitute their host rock. Whole rock major and trace element compositions indicate that the parent magma was gabbroic/basaltic and was generated in a subduction-related arc, or back-arc settings. The belt of mafic-ultramafic intrusions host nickel sulfide resources and contain significant Cu, Co and PGE mineralization. Using pre-existing resistivity and chargeable data 2D and 3D models were obtained. Resistivity anomalies are located along two eastern and western parallel corridors located outside the area of most continuous outcrops of the orthopyroxene gabbro