The northern part of the eastern margin of the extensional Neogene Teruel Basin (central-eastern Spain) consists of a non-linear, zigzag fault zone made of alternating ca. 2 km long, NNW-SSE trending segments and shorter NNE-SSW ones. Good outcrop conditions made possible a comprehensive integrated stratigraphic and structural study, especially focused on coarse clastic sediments deposited along the basin margin. Well-exposed stratal relationships with boundary faults, allowed the analysis of tectonic influence on sedimentation. Synsedimentary deformation includes growth faulting, rollover anticlines, and monoclines and associated onlap stratal terminations, angular unconformities, and other complex growth strata geometries. One of them is the onlap-over-rollover bed arrangement described here for the first time, which reveals the competition between tectonic subsidence and sedimentary supply. Both, the structural inheritance (dense Mesozoic fracture grid) and the dominant, nearly ‘multidirectional’ (σ1 vertical, σ2 ≈ σ3), Pliocene extensional regime with σ3 close to E-W, are considered to have controlled the margin structure and evolution. Tectono-stratigraphic evolution includes: (i) reactivation of inherited NNW-SSE faults and development of W-SW-directed small alluvial fans (SAF) while NNE-SSW segments acted as gentle relay ramp zones; (ii) progressive activation of NNE-SSW faults and development of NW-directed very small alluvial fans (VSAF); during stages i and ii sediments were trapped close to the margin, avoiding widespread progradation; (iii) linking of NNW-SSE and NNE-SSW structural segments, overall basin sinking and widespread alluvial progradation; (iv) fault activity attenuation and alluvial retrogradation. The particular structure and kinematic evolution of this margin controlled alluvial system patterns. Size of alluvial fans, directly set up at the border faults, was conditioned by the narrowness of the margin, small catchment areas, and proximity between faults, which prevented the development of large alluvial fans. The size of the relay zones, only a few hundred meters wide, acted in the same way, avoiding them to act as large sediment transfer areas and large alluvial fans to be established. These features make the Teruel Basin margin different to widely described extensional margins models.

中文翻译：

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狭窄伸展之字形盆地边缘（西班牙特鲁埃尔盆地北部）的冲积沉积和构造地层演化

伸展的新近纪特鲁埃尔盆地（西班牙中东部）东部边缘的北部由一个非线性的锯齿形断层带组成，由交替的约 . 2 公里长的 NNW-SSE 趋势段和较短的 NNE-SSW 段。良好的露头条件使综合地层和构造研究成为可能，特别是重点研究沿盆地边缘沉积的粗碎屑沉积物。与边界断层的暴露地层关系允许分析构造对沉积的影响。同沉积变形包括生长断层、翻转背斜和单斜以及相关的上重叠地层终止、角度不整合和其他复杂的生长地层几何形状。其中之一是这里首次描述的重叠翻车床布置，这揭示了构造沉降和沉积供应之间的竞争。构造继承（致密的中生代裂缝网格）和占主导地位的近“多方向”（σ1 垂直，σ2 ≈ σ3）上新世伸展机制，σ3 接近 EW，被认为控制了边缘结构和演化。构造-地层演化包括：(i) 继承的 NNW-SSE 断层的重新激活和 W-SW 导向的小型冲积扇 (SAF) 的发展，而 NNE-SSW 段作为缓和的中继斜坡带；(ii) NNE-SSW 断层的逐步激活和 NW 导向的极小冲积扇 (VSAF) 的发展；在第一阶段和第二阶段，沉积物被困在靠近边缘的地方，避免了广泛的进积；(iii) NNW-SSE 和 NNE-SSW 结构段的连接，盆地整体下沉和广泛的冲积进积；(iv) 断层活动衰减和冲积回积。该边缘的特殊结构和运动学演化控制了冲积系统模式。直接设置在边界断层上的冲积扇的大小受边缘狭窄、汇水面积小和断层之间的距离的限制，阻碍了大型冲积扇的发展。中继带的大小，只有几百米宽，以同样的方式起作用，避免它们成为大型泥沙输送区和大型冲积扇。这些特征使特鲁埃尔盆地边缘不同于广泛描述的伸展边缘模型。该边缘的特殊结构和运动学演化控制了冲积系统模式。直接设置在边界断层上的冲积扇的大小受边缘狭窄、汇水面积小和断层之间的距离的限制，阻碍了大型冲积扇的发展。中继带的大小，只有几百米宽，以同样的方式起作用，避免它们成为大型泥沙输送区和大型冲积扇。这些特征使特鲁埃尔盆地边缘不同于广泛描述的伸展边缘模型。该边缘的特殊结构和运动学演化控制了冲积系统模式。直接设置在边界断层上的冲积扇的大小受边缘狭窄、汇水面积小和断层之间的距离的限制，阻碍了大型冲积扇的发展。中继带的大小，只有几百米宽，以同样的方式起作用，避免它们成为大型泥沙输送区和大型冲积扇。这些特征使特鲁埃尔盆地边缘不同于广泛描述的伸展边缘模型。中继带的大小，只有几百米宽，以同样的方式起作用，避免它们成为大型泥沙输送区和大型冲积扇。这些特征使特鲁埃尔盆地边缘不同于广泛描述的伸展边缘模型。中继带的大小，只有几百米宽，以同样的方式起作用，避免它们成为大型泥沙输送区和大型冲积扇。这些特征使特鲁埃尔盆地边缘不同于广泛描述的伸展边缘模型。