Sedimentology and Structural Geology of the Belaga Formation in Tatau, Sarawak

This project is about the study of the sedimentology and structural geology of the
Belaga Formation in Tatau, Sarawak. The Belaga Formation is part of the Rajang Group
which predominantly underlies the Sibu Zone. The Sibu Zone is in the central part of
Sarawak that consist of dominantly thick shale-sandstone turbidite sequences that were
deposited above an oceanic crust and later uplifted during the Late to Middle Eocene
time. The sedimentology and structural geology of the Belaga Formation is the result
of the tectonic history of the Southeast subduction of the South China Sea towards the
West Borneo Basement. The boundary between the Sibu Zone and Kuching Zone is
the Lupar Line. The Belaga Formation has been interpreted as thrust slices as a result
from the subduction forming an accretionary wedge. Due to the complex tectonic
history, the structural geology of the Belaga Formation is not fully understood.