| Grund Formation | |
|---|---|
| Stratigraphic range: Langhian (MN5) | |
| Type | Formation |
| Lithology | |
| Primary | Sandstone, siltstone |
| Location | |
| Country | Austria |
The Grund Formation is a geologic formation in Austria. It preserves fossils dated to the Langhian age of the Miocene period.[1]