Deutsch: Oberrhein-Graben
Français: Graben du Haut Rhin
Italiano: Graben dell'Alto Reno
English: Upper Rhine Graben
The NNE–SSW trending Upper Rhine Graben (a segment of the European Cenozoic Rift System located north of Basel) is up to 40 km wide and separates the Haute-Saône Platform to the west from the South German Platform to the east. The graben shoulders are bounded by steep normal faults and include isolated, lowered blocks of Mesozoic platform sediments along the rift-internal sides (the so-called Vorberg Zone, e.g., Isteiner Klotz north of Basel). The Schwarzwald Fault forms the eastern border of the graben. The southwestern border of the graben with the Haute-Saône Platform forms a flexure. In the southeast, the graben borders the External Folded Jura; the corresponding flexure is accentuated and overprinted by Alpine deformation.
The Upper Rhine Graben is filled with Paleogene–Neogene sediments of 2–3 km thickness.
siehe www.oberrheingraben.de
Oberrheingraben, Rheintalgraben, fossé de la vallée du Rhin, Oberrheintal-Graben = Rheintal-Graben (Büchi & Trümpy 1976), Oberrheinische Tiefebene, Oberrheinisches Tiefland, Upper Rhine Plain, Rhine Rift Valley, fossé rhénan, graben del Reno (Dal Piaz et al. 1992a), Upper Rhine Graben = Cenozoic of the Rhine Graben (Mojon et al. 2018), Upper Rhine Graben (Gouffon et al. 2024)