The arcuate tectonic structure is a prominent feature of the northeast Tibetan plateau, the dynamics of which is still not well constrained. In this study, 3-D high-resolution numerical models are systematically conducted to investigate the arcuate tectonics and dynamics. The models highly emphasize the significance of lateral heterogeneities, indicating that the pre-existing strong blocks within the deforming plate strongly control the formation of arcuate tectonics. The laterally changing thickness of sediment strata or varying geometry of inherited faults within the deforming plate can also contribute but does not play crucial roles. On the other hand, the non-uniform shape of the leading edge of the indenting plate only leads to the formation of arcuate tectonics close to the indenter. Finally, the numerical models are systematically compared with the arcuate tectonic structures around the northeast Tibetan plateau and other possible regions.

中文翻译：

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青藏高原东北部弧形构造构造的形成机制：3D数值模拟的洞察

弧形构造构造是青藏高原东北部的一个突出特征，其动力学还没有得到很好的约束。在这项研究中，系统地进行了 3-D 高分辨率数值模型来研究弧形构造和动力学。模型高度强调横向非均质性的重要性，表明变形板块内预先存在的强块体强烈控制了弧形构造的形成。沉积地层的横向变化厚度或变形板块内继承断层的不同几何形状也有贡献，但并不起关键作用。另一方面，压痕板前缘的不均匀形状只会导致靠近压头的弧形构造的形成。最后，