Personnel: Eldert Advokaat, Robert Hall & Lloyd White

Themes: Subsidence, exhumation and uplift; Eastern Indonesia and the Bird’s Head


This project aims to identify the cause and timing of Neogene deformation and tectonic events in the western part of the North Arm of Sulawesi.


Sulawesi is located at the junction between the Eurasian, Australian, and Philippine Sea plates. The island is composed of numerous fragments derived from these plates, and it has long been thought that convergence and accretion were the main mechanisms responsible for its complex geology. Previous tectonic models are based on relatively limited field and age data. New studies indicate that crustal extension also played an important role. We report new field data, micro-structural observations and radiometric ages from the Malino Metamorphic Complex (MMC) in the western part of the North Arm.