| The Early Miocene Gachsaran Formation is composed of evaporites, marl and limestone. |
| However, a relative sea level fall in the late Oxfordian was followed by the accumulation of 200 m of subaqueous evaporites and marginal sabkha facies under a dry climate. |
| These linear depressions are filled with brines that are the result of dissolution of evaporites by fluids travelling up the flank of the structure. |
| There is strong sedimentological evidence that the evaporites were precipitated in sabkhas or desert salt lakes. |
| Turbidite deposits and westward younging of limestones and evaporites record the development of the foreland fold and thrust belt during the Late Carboniferous Epoch. |
| The Rhaetian-Lower Sinemurian shallow ramp units are composed of platform carbonates, evaporites and minor siliciclastic deposits. |
