Trossingen Formation
The Trossingen Formation, formerly the Knollenmergel, is a geological formation in Germany and Switzerland. It dates back to the late Norian-Rhaetian.
| Trossingen Formation | |
|---|---|
| Stratigraphic range: Norian-Rhaetian ~ | |
Excavation in 1912 | |
| Type | Geological formation |
| Unit of | Keuper |
| Sub-units | Feuerletten, Grenzmergel & Knollenmergel Members |
| Underlies | Exter Formation |
| Overlies | Löwenstein Formation |
| Thickness | Franconia: 55–60 m (180–197 ft) Southern Württemberg: 10 m (33 ft) |
| Lithology | |
| Primary | Marl, claystone |
| Other | Mudstone, sandstone, conglomerate |
| Location | |
| Coordinates | 48.8°N 9.2°E |
| Approximate paleocoordinates | 31.9°N 10.4°E |
| Region | Central Europe |
| Country | Germany Switzerland |
| Extent | Southern half of Germany |
| Type section | |
| Named for | Trossingen |
| Named by | Beutler |
| Year defined | 2005 |
Trossingen Formation (Germany) | |
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