The sequences are characterized by thin laminated marlstones, calcareous mudstones, claystones, shales and some thin coal beds.
The investigated main Niveau Breistroffer interval is 6.28 m thick and consists of weakly lithified, fine-grained marlstones and four laminated black shale units.
From the Early Aptian to the latest Albian, a c.750 m thick succession of cyclically bedded marlstones and limestones was deposited in the centre of the basin.
|noun|
1.Rock consisting of, or having the composition of, consolidated marl; marlite. Also: specifically an iron-rich oolitic limestone of the Middle Lias of England, or the group of iron-rich rocks in which it occurs.
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