PETROGRAFiA Y GEOQUiMICA DE ROCAS MAFICAS Y ULTRAMAFICAS DE CORDILLERA FRONTAL, MENDOZA.

GARGIULO, M. F.; BJERG, E A

Facultad de Ciencias Exactas y Naturales -UBA

Congreso; VIII Congreso de Mineralogía y Metalogenia 2006; 2006

Asociación Mineralógica Argentina

<!-- /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-parent:""; margin:0cm; margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:12.0pt; font-family:"Times New Roman"; mso-fareast-font-family:"Times New Roman";} @page Section1 {size:21.0cm 842.0pt; margin:70.9pt 3.0cm 70.9pt 3.0cm; mso-header-margin:35.45pt; mso-footer-margin:35.45pt; mso-paper-source:0;} div.Section1 {page:Section1;} --> We present new geochemical data of pre-Carboniferous ultramafic and mafic rocks exposed on the eastern part of Frontal Cordillera of Mendoza province, in the area of Salamanca Mine and Quebrada de la Yesera. The comparison of these results with those published elsewhere shows that in Frontal Cordillera at least two types of dikes can be differentiated: one group with 018 and the other E-MORB signature. The E-MORB type correlates with the Western Precordillera basic rocks. The ultramafic samples from Salamanca Mine have primitive mantle signature while those of the Metales Belt and Precordillera have E-MORB geochemical signature.