Late Cretaceous to early Eocene magmatic evolution of the Laramide arc in the Nacozari quadrangle, northeastern Sonora, Mexico and its regional implications

The Nacozari quadrangle in northeastern Sonora, Mexico preserves an important number of porphyry copper deposits associated with the Laramide magmatic arc. This work addresses new geological, geochronological and geochemical data to better constrain the regional magmatic evolution of the arc in this part of the North American Cordillera.