Abstract

GOMEZ-TUENA, Arturo; OROZCO-ESQUIVEL, Ma. Teresa  and  FERRARI, Luca. Igneous petrogenesis of the Transmexican Volcanic Belt. Bol. Soc. Geol. Mex [online]. 2005, vol.57, n.3, pp.227-283. ISSN 1405-3322.  https://doi.org/10.18268/bsgm2005v57n3a2.

The magmatic diversity of the Transmexican Volcanic Belt is directly or indirectly controlled by two independent oce-anicplates with differing geophysical and compositionalparameters, by an extensional tectonic regime that operates with different intensities over the upperplate, by a continental basement with a diversity of ages, thicknesses and compositions, and by a compositionally heterogeneous mantle wedge that has been modified to various extents by the subduction-de-rived chemical agents. The convergent margin and the magmatic arc have not been evolving homogenously though their geologic histories, but instead have shown significant changes in position, geometry and composition. For these reasons, the Transmexican Volcanic Belt is the result of one of the most complex convergent margins on the planet, the subject of more than a century of scientific investigations, and the core of the most notable debates on the Mexican geology.

Keywords : Transmexican Volcanic Belt; Mexico; subduction; magmatic arc; igneous petrology; mantle; crust.

        · abstract in Spanish     · text in Spanish     · Spanish ( pdf )