Geological Map

Cambodia is geologically composed of three different structures: the Triassic and Liassic "Ancient Gulf' covering a large area in the East, the Jurassic-Cretaceous continental sandstone forming important highlands in the West and, between them, the Quaternary basin which occupies the whole central plain of the country.

Geological studies have revealed a series of sedimentary formations extending from Precambrian at the bottom through to Cretaceous at the top; all of these formations have been affected by successive tectonic and volcanic activities. Tertiary formations, which have very few outcrops on land, form a thick layer in the sea bottom and seem to be an important target for oil and gas exploration.