In general it consists of fine-grained, highly oxidised red-brown sands with some silt and clay. Except from splay deposits, horizontal laminations have are absent elsewhere
in the uppermost lake floor sediments, probably partly due to the growth of displacive seed and discoidal gypsum between sediment grains close to the surface. In this regard, the uppermost sediments and surface expression of this unit have most likely been
significantly altered by salt dynamics typical of playa mudflats, or the salt aided accretion of aeolian sand as observed in parts of the lake floor (e.g. D, F1, Fig. 4).