The sedimentology and depositional architecture of the 1.2 Ga Stoer Group is analyzed.

Remote sensing aids in the recognition of ancient large-scale fluvial forms.

Previously unrecognized trunk-channel belts point to stable, deep Precambrian rivers.

Channel bodies shared shape and morphodynamics with post-vegetation rivers.

Trunk-channel belts are sided by floodbasins, gravelly piedmonts and aeolian fields