Age: Danian (First stage of the Palaeocene, 60 to 65 My.)
Thickness: 50 to 100 metres
Fossils: Rare terrestrial gastropods.
Description of the unit:
It is red to yellow marl with distinctive
traces of palaeosols, locally interrupted
by a small sandstone layer, sometimes conglomeratic
lenses or thin limestone beds.
The difference in tone between the two units of this formation - bright reddish
for the first, yellow-ochreous for the second – may indicate a climatic
evolution from warm and dry to warm and humid. This is perhaps linked to the
altitude.
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