This article provides a brief view of development of the Sulu ultrahig
h pressure metamorphic (UHPM) terrane involved in a conceivable intrac
ontinental collision between tile Sion-Korean Plate and the Yangtze Pl
ate during the Mesozoic Era. Integrated study of geological and geophy
sical data reveals crustal structures in the Sulu terrane, and provide
s evidence for an evolution model of the UHPM terrane called ''the dua
l intracontinental subduction model''.