The sabkhas are covered by a salt crust, 3-5 cm thick, under which there lies 25-150 cm of carbonate sand, gypsum and halite.
A few layers of gypsum-bearing mudstones occur in the western part.
Moisture was monitored daily in each soil x moisture combination on four seedlings with gypsum blocks placed at 20 cm depth.
Circles represent values less than 2%, except in the gypsum zone centered on 11 m, where circles signify only the presence of pollen types.
Wave-ripple marks are commonly observed within this facies association, and gypsum occurs locally as discontinuous laminae.
The minor internal dissolution of gypsum has an important consequence for the immediate habitat.
Analysis of the photograph of the gypsum cast and the latex cast at hand indicates that the casts were made from the same specimen.
However, gypsum is not always available, it is now very expensive and its application on groundnut may not be economical.
