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3D Structural Modelling and Backstripping of the Northern Northeast German Basin

机译:东北德国北部盆地的3D结构建模和反演

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A 3D structural model of the northern part of the Northeast German Basin was evaluated with special emphasis on the structural framework and its Mesozoic and Cenozoic evolution. The model was the basis for a 3D backstripping approach, considering salt flow as a consequence of spatially changing overburden load distribution, isostatic rebound and sedimentary compaction for each backstripping step in order to restore the subsidence history in the region. Additionally, a neotectonic forward modelling was completed in an attempt to predict the future topography of the region when the system is in tectonic equilibrium. The results reveal that two periods of accelerating salt movement can be correlated with the E-W directed extension the basin experienced during the Late Triassic to Early Jurassic and later by the Late Cretaceous to Early Cenozoic inversion. This suggests that the regional stress field plays a key role for the halokinesis in the region. Furthermore, the neotectonic modelling shows that many off the salt structures in the region are still active and that the future coastline presumably will run with a WNW-ESE trend, arguing that the compressional stresses related to the Alpine Orogeny are the prime factor for the present day landscape evolution.
机译:对德国东北盆地北部的3D结构模型进行了评估,并特别强调了结构框架及其中,新生代演化。该模型是3D反演方法的基础,考虑到盐分流是每个反演步骤空间上覆负荷分布,等静回弹和沉积压实的空间变化的结果,以恢复该区域的沉降历史。此外,当系统处于构造平衡状态时,为了预测该地区的未来地形,完成了新构造正演模拟。结果表明,两个加速盐分运动的时期可能与盆地晚三叠纪至侏罗纪早期以及晚白垩纪至新生代逆转过程中盆地经历的E-W定向伸展有关。这表明区域应力场对于该区域的晕动作用起着关键作用。此外,新构造模型表明,该地区许多盐分构造仍处于活跃状态,并且未来的海岸线可能会以WNW-ESE趋势运行,认为与高山造山带有关的压应力是目前的主要因素。日景观演变。

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