Upper Rhine Graben: Role of preexisting structures during rift evolution

摘要: [1] The evolution of the Cenozoic Upper Rhine Graben was controlled by a repeatedly changing stress field and reactivation complex set crustal discontinuities that had come into evidence during Permo-Carboniferous times. A comparison spatial temporal thickness distribution synrift deposits with preexisting fault patterns permits to infer sequence distinct basin subsidence phases can be related changes in ambient field. Reactivation system late Palaeozoic systems, outlining troughs highs, nucleation initially separated middle Eocene basins, depocenters which coincided WSW-ENE trend. During Oligocene extension individual basins coalesced, resulting development SSW-NNE striking Graben. (Chattian) change field, probably reactivated as dextral strike-slip central graben segment forming releasing bend. early Miocene (Aquitanian), major reorientation regional is held responsible for main phase northern parts This reflected counterclockwise rotation northeastward shift depocenter axis later uplift erosion southern Plio-Quaternary, sinistral restraining