Sunda plate

[2] The Sunda plate includes the South China Sea, the Andaman Sea, southern parts of Vietnam, Myanmar, Laos and Thailand along with Malaysia, Singapore, Cambodia, southern Philippines, and the islands of Bali, Lombok, West Nusa Tenggara, Borneo, Sumatra, Java, and part of Sulawesi in Indonesia.

However, it then transitioned to continental passive margin subducting under oceanic plate.

This data shows that lower Indo-Australian plate is the main driver for deformation seen in the nearby Sunda-Banda Arc system.

The strain that is created within this system results in shortening, with the greatest concentration in the forearc and backarc.

[3][4] The eastern, southern, and western boundaries of the Sunda plate are tectonically complex and seismically active.