Permian arc magmatism in Mindoro, the Philippines: An early Indosinian event in the Palawan Continental Terrane

Dating of igneous and detrital zircons derived from the metamorphic complex that forms northeastern Mindoro (Philippines), reveals an episode of Middle to Late Permian (250–270 Ma) magmatism. The new age data confirm the previously contentious pre-Mesozoic age of the metamorphics and suggest that they are part of the rifted margin of SE China rather than the oceanic arc-dominated Philippine Mobile Belt. The magmatic episode revealed in this study coincides with arc-related granite magmatism in Hainan (China) thus may expand the known extent of that continental arc along the southeastern margin of southern China.