| Group or Formation
|
Period
|
Notes
|
| Aachen Formation |
Cretaceous |
|
| Aachenian Formation |
Cretaceous |
|
| Breda Formation |
Neogene |
|
| Calcaire de Kunraed Formation |
Cretaceous |
|
| Grebbeberg Formation |
Netherlands |
|
| Gulpen Formation |
Cretaceous |
|
| Houthem Formation |
Netherlands |
|
| IJmuiden Ground Formation |
Netherlands |
|
| Kunrade Formation |
Cretaceous |
|
| Kunrade Chalk Formation |
Cretaceous |
|
| Kunrade Chalke Formation |
Cretaceous |
|
| Landen Formation |
Paleogene |
|
| Lower Gulpen Chalk Formation |
Cretaceous |
|
| Maastricht Formation |
Paleogene, Cretaceous |
|
| Maastricht Chalk Formation |
Cretaceous |
|
| Maastrichter Tuffkreide Formation |
Cretaceous |
|
| Muschelkalk Group/Vossenveld Formation |
Triassic |
|
| Nekum Formation |
Cretaceous |
|
| Oosterhout Formation |
Neogene |
|
| Tienen Formation |
Paleogene |
|
| Upper Gulpen Chalk Formation |
Cretaceous |
|
| Urk Formation |
Netherlands |
|
| Vaals Formation |
Cretaceous |
|
| Vaals Greensand Formation |
Cretaceous |
|
| Vossenveld Formation |
Triassic |
|
| Westkapelle Ground Formation |
Neogene |
|
