The collision between Gondwana and Laurussia that formed the latest supercontinent, Pangea, occurred during Devonian to early Permian times and resulted in a large-scale orogeny that today transects Europe, northwest Africa, and eastern North America. This orogen is characterized by an “S” shaped corrugated geometry in Iberia. The northern curve of the corrugation is the well-known and studied Cantabrian (or Ibero–Armorican) Orocline and is convex to the east and towards the hinterland. Largely ignored for decades, the geometry and kinematics of the southern curvature, known as the Central Iberian curve, are still ambiguous and hotly debated. Despite the paucity of data, the enigmatic Central Iberian curvature has inspired a variety of kinematic models that attempt to explain its formation but with little consensus. This paper presents the advances and milestones in our understanding of the geometry and kinematics of the Central Iberian curve from the last decade with particular attention to structural and paleomagnetic studies. When combined, the currently available datasets suggest that the Central Iberian curve did not undergo regional differential vertical-axis rotations during or after the latest stages of the Variscan orogeny and did not form as the consequence of a single process. Instead, its core is likely a primary curve (i.e., inherited from previous physiographic features of the Iberian crust), whereas the curvature in areas outside the core is dominated by folding interference from the Variscan orogeny or more recent Cenozoic (Alpine) tectonic events.

中文翻译：

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伊比利亚中部的神秘曲率及其令人困惑的运动学

冈瓦纳和月桂树之间的碰撞形成了最新的超大陆Pangea，发生在泥盆纪至二叠纪早期，并导致了今天横跨欧洲，西北非洲和北美东部的大规模造山运动。该造山带的特征是“ S”形。伊比利亚波纹状的几何形状。波纹的北部曲线是广为人知且经过研究的坎塔布连（或伊比利亚·阿莫里肯）Orocline，向东并向内陆凸出。几十年来，南曲率的几何学和运动学一直被人们广泛忽略，被称为伊比利亚中央曲线。尽管数据很少，但是神秘的伊比利亚中央曲率激发了各种运动学模型，这些模型试图解释其形成，但几乎没有共识。本文介绍了我们对近十年来伊比利亚中部曲线的几何学和运动学的理解所取得的进步和里程碑，并特别关注了结构和古磁学研究。合并后，当前可用的数据集表明，在Variscan造山运动的最新阶段期间或之后，伊比利亚中部曲线没有经历区域微分的垂直轴旋转，并且没有形成为单个过程的结果。取而代之的是，其核心可能是一条主曲线（即，继承自伊比利亚地壳的先前生理特征），而核心外部区域的曲率则主要是来自瓦里斯卡造山运动或更近的新生代（高山）构造事件的褶皱干扰。