Röddinge Formation
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The Röddinge Formation is a geologic formation in Skåne County, southern Sweden. It is Early Jurassic (Sinemurian-Toarcian) in age.[1] 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.[2] It is a unit known mostly for large museum collections and estimated to have a thickness of several hundreds of meters.[3] It is also known for its large iron deposits.[2] 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.[4][5] Most likely, the coarse-grained nature of the Röddinge Formation is linked to rapid erosion of a tectonically active hinterland.[6]
Röddinge Formation | |
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Stratigraphic range: Late Sinemurian-Late Toarcian ~195–175 Ma | |
Type | Formation |
Unit of | Vomb Trough |
Underlies |
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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 | ![]() |
Type section | |
Named for | Röddinge |