Abstract The Central European Basin is an intracontinental basin that initially formed due to long-lasting thermal subsidence accompanied with several tectonic phases of extension during Mesozoic times. Locally, thick evaporites were incorporated in the deformation and led to the formation of detached structures, salt pillows and diapirs. At the end of the Late Cretaceous, the formation of (sub-) basins and (half-) grabens became interrupted by a short-term event of contraction. Especially along the northern and southern edges of the basin, lithospheric shortening resulted in basin inversion and the uplift of large basement blocks. Hence, the present day's structural framework shows a complex pattern of kinematically and chronologically variable structures. Herein, we unravelled these structures for the Altmark region in northern Saxony-Anhalt (Central Germany). We used regional depth maps, reflection seismics and borehole data analysed by use of large-scale subsurface mapping and 3D modelling techniques to completely re-evaluate the structures in the Late Palaeozoic to Cenozoic sedimentary basin succession. Our results show a high variability of tectonic structures: narrow and distributed, in parts reactivated normal fault zones, huge inverted basins, thin-skinned thrust faults, detachment folds and large basement thrusts. The style of deformation significantly changed during the region's evolution. This is indicated by particular structural, kinematic, thermal and rheological conditions, which existed for the individual phases of basin formation and inversion and probably persist until today.

中文翻译：

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中欧盆地南部的中生代板内变形 - 大规模 3D 建模的结果

摘要 中欧盆地是一个陆内盆地，最初是由于中生代长期持续的热沉降伴随着几个构造阶段的伸展而形成的。在局部，厚蒸发岩被纳入变形并导致分离结构、盐枕和底辟的形成。在晚白垩世末期，（亚）盆地和（半）地堑的形成被短期收缩事件中断。特别是在盆地的北缘和南缘，岩石圈缩短导致盆地反转和大型基底块体隆起。因此，当今的结构框架显示出运动学和时间顺序可变结构的复杂模式。在此处，我们为萨克森-安哈尔特州北部（德国中部）的 Altmark 地区解开了这些结构。我们使用区域深度图、反射地震和钻孔数据，通过使用大比例尺地下测绘和 3D 建模技术，对晚古生代至新生代沉积盆地序列中的构造进行了全面重新评估。我们的研究结果表明构造结构的高度可变性：狭窄和分布的，部分重新活动的正断层带，巨大的倒置盆地，薄皮逆冲断层，拆离褶皱和大型基底逆冲断层。在该地区的演化过程中，变形方式发生了显着变化。这由特定的构造、运动、热和流变条件表明，这些条件存在于盆地形成和反转的各个阶段，并且可能一直持续到今天。