The article provides an overview of the main geological formation in Singap
ore, including the igneous rocks of granite and norite, the various sedimen
tary rocks, the Quaternary deposits and the recent Marine clay deposits. Th
e geological and geotechnical properties of each geological material are de
scribed and discussed. The paper attempts to provide the essential geologic
al and geotechnical information for the design and construction of undergro
und structures in Singapore. (C) 2000 Elsevier Science Ltd. All rights rese
rved.