Crystalline quartz, diatoms and glauconite are very abundant in the upper part of the unit but decrease downward, as it becomes more clayey. About 1.5 m below the top of the unit, there is a break between more sandy and harder sediments above and more muddy sediments below. Carbonaceous fragments and bioturbation are ubiquitous. Sedimentation rates are low. The lithological transition to the underlying sequence is transitional.
Sedimentation rates are high.
Dinocysts are present in massive concentrations. Subunit VA is late Eocene in age. It consists of clayey quartzose siltstone with glauconite-rich intervals and some carbonate. Subunit VB is of late middle Eocene age. It consists of silty claystone.