| Geological data indicate that this seal is made up of Messinian evaporites which formed some 60 million years ago. |
| It is composed of sabkha evaporites and subaqueous evaporites with thin carbonate interbeds that can be traced for hundreds of kilometers. |
| The Rhaetian-Lower Sinemurian shallow ramp units are composed of platform carbonates, evaporites and minor siliciclastic deposits. |
| The Hellenic Trench of the Hellenic arc system is unusual because this convergent margin subducts evaporites. |
| The preponderance of evidence for intrasediment growth and dissolution of evaporites supports a sabkha and, in particular, a saline mudflat setting. |
| 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. |
