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Trossingen Formation | |
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Stratigraphic range: Norian-Rhaetian ~ | |
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°48′N 9°12′E / 48.8°N 9.2°E |
Approximate paleocoordinates | 31°54′N 10°24′E / 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 |
The Trossingen Formation, formerly the Knollenmergel, is a geological formation in Germany and Switzerland. It dates back to the late Norian-Rhaetian.[1]