- Cenozoic sedimentary provenance of the Central Sumatra Basin
- Lahat and Lemat Formations of the South Sumatra Basin
- Provenance of sediments from Sumatra
- Provenance of Sundaland sediments
- The Evolution of the Sumatran Fault System, Indonesia
- Isotopic Dating of the Sumatran Fault System
This part of the Sundaland margin has a very long subduction history which extends back to at least the late. Sumatra is underlain by continental crust dating from the Permo-Carboniferous to which were accreted a number of terranes during the Mesozoic and the island acquired a structural grain broadly parallel to its length. A collision between Sumatra-West Java and a narrow Woyla terrane terminated Mesozoic arc activity and Cenozoic rocks unconformably overlie Mesozoic rocks. Regional uplift was followed by extension and subsidence in the early Cenozoic although this is not well dated; the oldest parts of the sequence include volcanic rocks and sediments devoid of fossils. The origin of the Sumatra Basins is uncertain, partly because of the uncertainty in their age of initiation. Both strike-slip and extensional controls have been proposed. There was short-lived plutonism in the Early Eocene (60-50 Ma) but most Cenozoic activity dates from the early Miocene (20-5 Ma) when the present forearc-arc-backarc became established.