The Late Eocene dyke swarms from the Michoacan block (western Mexico): Tectonic implications

The western-central part of Mexico is segmented by several structural systems bounding crustal blocks, two of them are the Jalisco and Michoacan blocks. In an oblique convergent margin system the deformation induced is partitioned into an arc normal component, accommodated at the trench, and an arc-parallel component, accommodated at the magmatic arc. Thus knowledge of the relative motions between these plates involved with the SW tectonics of Mexico is important because it allows us propose a link between these relative motions and the onland structural systems.