Glacial relocation of tertiary sediments in the Bergisches Land on the edge of the Düsseldorf Glacier

East of Düsseldorf, in the northwestern Rhenish Slate Mountains (Bergisches Land), the development of tertiary deposits, which discordantly superimposed the Devonian underground, is investigated using new highways. The focus of stratigraphic analysis is on the so-called high-altitude terraces. It turned out that from the five high-altitude terraces to Breddin (1928) and Kaiser (1957) there is probably only one Pliocene-era terrace. Due to glacial elevations, fracture tectonics and solifluctive rearrangements, the Pliocene River Shotters together with marine fine sands of the Oligocene-era Grafenberg formation reached different topographical levels. In addition, the glacitectonic relocation of tertiary sediments through the Düsseldorf glacier is demonstrated by the detection of deformed meltwater deposits (type B-glacitectonite).本研究依托新建公路工程，对杜塞尔多夫东部、莱茵兰西北部板岩山区（贝尔吉施地区）内不整合覆于泥盆纪基底之上的第三纪沉积层展开调查。地层分析的核心聚焦于所谓的高位阶地。研究发现，Breddin（1928）与Kaiser（1957）此前划分的5处高位阶地中，实际仅存在1处上新世阶地。受冰川抬升、断裂构造及融冻泥流重排作用影响，上新世河砾石层与渐新世格拉芬贝格组（Grafenberg formation）的海相细砂发生了不同程度的地形位分异。此外，通过识别变形冰碛物（B-glacitectonite），证实了杜塞尔多夫冰川对第三纪沉积物的冰构造改造作用。