We thank Keppie et al. (2008) for their comment that allows us to expand the discussion on the geology and metamorphic evolution of the Acatlán Complex of southern Mexico. In our paper (Vega-Granillo et al., 2007), we provide geologic, petrologic, thermobarometric, and geochronologic evidence of three distinctive high-pressure (HP) metamorphic events of Early Ordovician, Late Ordovician–Silurian, and Silurian ages overprinting the Acatlán Complex; these events affect three different lithological suites, under contrasting pressure-temperature (P-T) conditions. This new concept differs from the classical idea proposed by Ortega-Gutiérrez (1978), who considered a single HP metamorphic event in the Acatlán...

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