Röddinge Formation
The Röddinge Formation is a geologic formation in Skåne County, southern Sweden. It is Early Jurassic (Sinemurian-Toarcian) in age. It is a unit with a limited degree of exposure, being identified mostly by its deposits on the Fyledalen Fault Zone, specially on Kurremölla, where is present the main fossil deposit. It is a unit known mostly for large museum collections and estimated to have a thickness of several hundreds of meters. It is also known for its large iron deposits. It is correlated with the mostly marine Rya Formation of western Skåne County, the Volcanic deposits of the Djupadal Formation and specially the Sorthat Formation of Bornholm. Most likely, the coarse-grained nature of the Röddinge Formation is linked to rapid erosion of a tectonically active hinterland.
| Röddinge Formation | |
|---|---|
| Stratigraphic range: Late Sinemurian-Late Toarcian ~ | |
| Type | Formation |
| Unit of | Vomb Trough |
| Underlies |
|
| Overlies | Unknown Hettangian deposits |
| Thickness | Up to 300 m (980 ft) |
| Lithology | |
| Primary | Limonite and Chamosite-cemented Quartz arenites containing abundant chamosite ooids. |
| Other | Berthierine, Siderite and Iron ooids. |
| Location | |
| Region | East Skåne County |
| Country | Sweden |
| Type section | |
| Named for | Röddinge |
Röddinge Formation (Sweden) | |