| The main minerals identified were mainly calcite also some diopside, wollastonite, iron oxides and a few scattered dolomite crystals. |
| Grotte Pere-Noel lies under woodland with a brown forest soil on Devonian limestones and dolomite. |
| Rhombs of ferroan dolomite occur both in the fringe around the fossils and within the matrix of the concretion. |
| The larger dolomite crystals fill voids in the fine-grained dolomite matrix. |
| Massive dolomite and dolomitic breccias are separated by a normal fault from the upper part of the sequence. |
| Middle Triassic anhydrite and dolomite form a sequence of strong reflectors, as does Lower Cretaceous sandstone. |
