The sedimentology of the succession indicates that these units represent bar top and marginal deposits in a braided fluvial setting.
These layers are usually intercalated in medium-grained sandstones with cross-sets that indicate deposition in fluvial environment.
Granulometry of the conglomeratic layers appears to indicate that coastal gravel beds were subsequently reworked by fluvial activities.
In all three basins, this mudstone-dominated interval passes into sandstonedominated sediments of a braided fluvial system.
The bulk of the formation consists of fluvial sand deposits, apparently deposited by braided river flow.
The breccias were deposited within fluvial channels and by unconfined sheetfloods.
Whilst the studies are worldwide, the authorship reflects the concentration of research in fluvial sedimentology in a relatively small number of countries.
The middle unit includes alluvial to lacustrine facies while the upper unit consists of fluvial-alluvial deposits.
