Grünbach Formation
| Grünbach Formation | |
|---|---|
| Stratigraphic range: Early Campanian | |
Vertebrate fauna of the Grünbach Formation | |
| Type | Geological formation |
| Unit of | Gosau Group (Grünbach Syncline) |
| Sub-units | Dreistetten conglomerate |
| Underlies | Piesting Formation |
| Overlies | Maiersdorf Formation |
| Area | Lower Austria |
| Thickness | over 150 m (490 ft) |
| Lithology | |
| Primary | Siltstone, sandstone, clay & marl |
| Other | Conglomerate & coal |
| Location | |
| Region | Central Europe |
| Country | Austria |
| Extent | Grünbach Syncline |
| Type section | |
| Named for | Grünbach am Schneeberg |
The Grünbach Formation is an Austrian geological formation that dates to the early Campanian age of the Late Cretaceous. it forms part of the Gosau Group, and represents a marine regression event, representing a coastal/brackish environment, being underlain by the marine carbonate Maiersdorf Formation and overlain by the deep marine siliciclastic Piesting Formation. The main lithology is clay, marl, siltstone and sandstone, with a minor conglomerate component. Coal seams have also been noted. It is notable for its fossils including those of dinosaurs and plants.