The influence of strain distribution inheritance within fault systems on repeated fault reactivation is far less understood than the process of repeated fault reactivation itself. By evaluating cross sections through a new 3D geological model, we demonstrate contrasts in strain distribution between different fault segments of the same fault system during its reverse reactivation and subsequent normal reactivation.The study object is the Roer Valley graben (RVG), a middle Mesozoic rift basin in western Europe that is bounded by large border fault systems. These border fault systems were reversely reactivated under Late Cretaceous compression (inversion) and reactivated as normal faults under Cenozoic extension. A careful evaluation of the new geological model of the western RVG border fault system – the Feldbiss fault system (FFS) – reveals the presence of two structural domains in the FFS with distinctly different strain distributions during both Late Cretaceous compression and Cenozoic extension. A southern domain is characterized by narrow (<3 km) localized faulting, while the northern is characterized by wide (>10 km) distributed faulting. The total normal and reverse throws in the two domains of the FFS were estimated to be similar during both tectonic phases. This shows that each domain accommodated a similar amount of compressional and extensional deformation but persistently distributed it differently.The faults in both structural domains of the FFS strike NW–SE, but the change in geometry between them takes place across the oblique WNW–ESE striking Grote Brogel fault. Also in other parts of the Roer Valley graben, WNW–ESE-striking faults are associated with major geometrical changes (left-stepping patterns) in its border fault system. At the contact between both structural domains, a major NNE–SSW-striking latest Carboniferous strike-slip fault is present, referred to as the Gruitrode Lineament. Across another latest Carboniferous strike-slip fault zone (Donderslag Lineament) nearby, changes in the geometry of Mesozoic fault populations were also noted. These observations demonstrate that Late Cretaceous and Cenozoic inherited changes in fault geometries as well as strain distributions were likely caused by the presence of pre-existing lineaments in the basement.

中文翻译：

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遗传结构域及其特殊应变分布对鲁尔河谷从逆转到延展的grab变的影响

与重复故障重新激活本身的过程相比，对于断裂系统中的应变分布遗传对重复故障重新激活的影响要少得多。通过使用新的3D地质模型评估断面，我们证明了同一断层系统的反向断层激活和随后的正常断层激活期间不同断层段之间应变分布的差异。研究对象是中生代中层的Roer谷地en（RVG）西欧的裂谷盆地以大型边界断裂系统为界。这些边界断裂系统在晚白垩世压缩（反转）作用下被反向激活，并在新生代伸展作用下被恢复为正常断层。对西部RVG边界断层系统的新地质模型-Feldbiss断层系统（FFS）进行了仔细的评估，发现FFS中存在两个结构域，在晚白垩世压缩和新生代伸展期间，应变分布明显不同。南部地区的特征是狭窄（<3  km）局部断层，而北部则具有宽（> 10 km）分布式断层。在两个构造阶段，FFS的两个域的总正向和反向投掷估计相似。这表明每个区域都承受着相似数量的压缩变形和伸展变形，但持久地分布不同。FFS的两个结构区域中的断层都向西北-东南走向，但它们之间的几何变化发生在倾斜的西北-西南走向。格罗特·布罗吉尔（Grote Brogel）断层 同样在鲁尔河谷grab陷的其他地区，WNW–ESE走向的断层与其边界断层系统中的主要几何变化（左步模式）有关。在这两个结构域之间的接触处，出现了一个由NNE-SSW引起的最新的石炭纪走滑断层，称为Gruitrode Lineament。在附近的另一个最新石炭纪走滑断裂带（Donderslag Lineament）上，也注意到了中生代断裂带的几何形状的变化。这些观察结果表明，晚白垩世和新生代继承了断层几何形状的变化以及应变分布，这可能是由于地下室中已存在的原始岩层引起的。