Draft:Ilocos Peridotite

The Ilocos Peridotite refers to a geological formation found in the Ilocos region of the Philippines. This formation consists of serpentinized peridotite.

In the northwestern Ilocos Norte in Luzon, Philippines, peridotite is exposed along with cherts and a variety of metamorphic rocks including chlorite schist, quartzo-feldspathic schist, muscovite schist, and actinolite schist. These rocks are incorporated within a tectonic mélange, the Dos Hermanos Mélange, which is thrust onto the turbidite succession of the Eocene Bangui Formation and capped by the Upper Miocene Pasuquin Limestone. The existence of this tectonic mélange in northwestern Luzon could be explained by an arc–continent collision event involving the Philippine Mobile Belt and the Palawan Microcontinental Block.