Digital reconstruction model of the Philippine Sea region since the Eocene

Insight into the evolution of Philippine Sea-South China Sea plate motions helps reveal the driving mechanisms of the long-term tectonic complexity in Southeast Asia. Here we present a new plate reconstruction model of this region characterized by back-arc extension and subduction since the Eocene by integrating the latest local geological and seismic data. A 3D data-assimilation geodynamic model was developed by using the spherical mantle code CitcomS to evaluate the credence of our plate reconstruction model and figure out the origin of the seismic high-velocity body under the SCS.