[Abstract Structures rooted in the crystalline basement frequently control the deformation of the host bedrock and the overlying sedimentary sequences. Here, we elucidate the structure of the c. 2‐km deep Precambrian granitic basement in the Anadarko Shelf, Oklahoma, and how the propagation of basement faults deformed the sedimentary cover. Although the basin is foreland in origin, the gently dipping shelf sequences experienced transpressional deformation in the Late Palaeozoic. We analyse a 3‐D seismic reflection data set and basement penetrating well data in an area of 824 km2. We observe: (a) pervasive deformation of the basement by basement‐bounded interconnected mafic sills, and a system of subvertical discontinuity planes (interpreted as faults) of which some penetrate the overlying sedimentary cover; (b) three large (>10 km‐long) through‐going faults, with relatively small (<100 m) vertical separation (Vsep) of the deformed stratigraphic surfaces; (c) upward propagation of the large faults characterized by faulted‐blocks near the basement, and faulted‐monoclines in the deeper sedimentary units that transition into open monoclinal flexures up‐section; (d) cumulative along‐fault deformation of the stratigraphy exhibits systematic trends that varies with offset accrual; (e) two styles of Vsep—Depth distribution which include a unidirectional decrease of Vsep from the basement through the cover rocks (Style‐1) and a bidirectional decrease of Vsep from a deep sedimentary unit towards the basement and shallower sequences (Style‐2). We find that the basement‐driven propagation (Style‐1) shows greater efficiency of driving the fault deformation to shallower depths compared to the intrasedimentary‐driven fault nucleation and propagation (Style‐2). Our study demonstrates an evolution of cumulative Vsep trends with offset accrual on the faults, and the partial inheritance of the heterogeneous intra‐basement deformation by the sedimentary cover. This contribution provides important insight into the upward propagation of basement‐driven faulting associated with structural inheritance in contractional sedimentary basins., Top Left: Curvature surface map of a sedimentary unit in the Anadarko Shelf, Oklahoma, showing large basement‐rooted faults and the associated fold deformation. Top Right: NW‐SE seismic section showing how both the intra‐basement and through‐going (basement‐rooted) faults offset basement‐bounded sills. Bottom: Implications of our findings for the tectonic evolution of the Anadarko Shelf. ]

中文翻译：

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沉积层序的基底控制变形，阿纳达科陆架，俄克拉荷马州

[植根于结晶基底的抽象构造经常控制寄主基岩和上覆沉积层序的变形。在这里，我们阐明了 c 的结构。俄克拉荷马州阿纳达科陆架 2 公里深的前寒武纪花岗岩基底，以及基底断层的传播如何使沉积盖层变形。虽然盆地起源于前陆，但缓倾陆架层序在晚古生代经历了挤压变形。我们分析了 824 平方公里区域内的 3-D 地震反射数据集和基底穿透井数据。我们观察到：（a）由基底边界的相互连接的基性基岩基岩引起的基底普遍变形，以及一个近垂直不连续面（解释为断层）系统，其中一些穿透上覆的沉积覆盖层；(b) 三大（> 10 公里长）贯穿断层，变形地层表面的垂直间距（Vsep）相对较小（<100 m）；(c) 以基底附近断块为特征的大断层向上扩展，较深沉积单元中的断层单斜向上部过渡为开放的单斜弯曲；(d) 地层累积沿断层变形表现出随偏移累积而变化的系统趋势；(e) Vsep 的两种类型——深度分布，包括从基底到盖层的 Vsep 单向递减（样式 1）和从深部沉积单元向基底和较浅层序的 Vsep 双向递减（样式 2） ）。我们发现，与沉积内驱动的断层成核和传播（样式 2）相比，基底驱动的传播（样式 1）在将断层变形驱动到更浅的深度方面表现出更高的效率。我们的研究证明了累积 Vsep 趋势的演变与断层上的偏移累积，以及沉积盖层对非均质基底内变形的部分继承。这一贡献提供了对与收缩沉积盆地中构造继承相关的基底驱动断层向上传播的重要见解。，左上：俄克拉荷马州阿纳达科陆架沉积单元的曲率表面图，显示了大型基底根断层和相关的折叠变形。右上：NW-SE 地震剖面显示了基底内和贯穿（基底根）断层如何偏移基底边界的基台。底部：我们的发现对阿纳达科陆架构造演化的影响。]