Abstract
We carried out a paleomagnetic study on rocks from southern Peru to reveal more precise timing of the post-Cretaceous tectonic rotation of Peruvian block in Central Andes as suggested by the previous studies. The samples were taken from Late Miocene to Early Pliocene sedimentary rocks, the Changuillo, Pisco and Paracas formations, and from Latest Miocene volcanic rocks. The paleomagnetic pole obtained from these rocks is close to Miocene to Quaternary poles of the stable part in South America, indicating that the post-Cretaceous tectonic rotation of the Peruvian block ceased in or prior to the Late Miocene.
