Sedimentary facies and palaeogeography of the Sanshui Basin, Guangdong during the Pelaeogene

The tectonic sequences are examined for the Sanshui Basin, Guangdong on the basis of regional geological, well logs, field outcrops, chronostratigraphic and biostratigraphic data. One basin-filling sequence, two tectonic sequences and six sequences have been distinguished and six sheets of sedimentary facies and palaeogeographic maps have been constructed for the Palaeogene strata in the basin. The deposition and filling of the Sanshui Basin spanned two stages:la custrine fine clastic aggradation in the early stage and coarse clastic filling at the uppermost part in the late stage.