Abstract The Anadarko Basin in south-central Oklahoma contains a number of oil and gas fields located on anticlinal structures formed during the Pennsylvanian Orogeny. We use new 2-D and 3D seismic and well data to interpret the structural geometry and kinematic evolution of the Carter-Knox, Cruce, Chickasha, and Cement structures. These structures consist of tight faulted-detachment folds within the Pennsylvanian units related to slip along a detachment at the base of the Springer Shale, cored by deeper low amplitude fault-related folds within the pre-Pennsylvanian thick carbonate units which are detached at the base of the Arbuckle Group. Slip on these detachments was derived from the Wichita Uplift, which was a Precambrian-Cambrian failed rift that became inverted during the Pennsylvanian Orogeny. The trend and location of these structures was probably controlled by discontinuities related to pre-existing rift-related basement normal faults. Variations in the structural styles among the major structures are related primarily to the shortening and the influence of late-stage normal/strike-slip faulting. Changes in shortening are manifested in the increasing tightness and relief of the anticlines from the Chickasha-Cement to the Carter-Knox and Cruce structures. Some of the E-W structures were cut by Virgilian age strike-slip and associated normal faults which formed as the maximum compressive stress rotated from NE-SW to ENE-WSW during the Late Pennsylvanian. In summary, the geometry, trend, and evolution of the structures were influenced by the mechanical stratigraphy, pre-existing basement structures, and a rotation in stresses during the final stage of their formation.

中文翻译：

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南俄克拉荷马州阿纳达科盆地东南部的宏观构造样式

摘要 俄克拉荷马州中南部的阿纳达科盆地包含许多油气田，位于宾夕法尼亚造山运动期间形成的背斜构造上。我们使用新的 2-D 和 3D 地震和井数据来解释 Carter-Knox、Cruce、Chickasha 和 Cement 结构的结构几何形状和运动学演化。这些结构由宾夕法尼亚单元内的紧密断层拆离褶皱组成，这些褶皱与沿 Springer 页岩底部的拆离滑动有关，以宾夕法尼亚州前厚碳酸盐单元内更深的低振幅断层相关褶皱为核心，这些褶皱在底部分离Arbuckle 集团的成员。这些支离体的滑移源自威奇托隆起，这是一个前寒武纪-寒武纪失败的裂谷，在宾夕法尼亚造山运动期间倒转。这些构造的趋势和位置可能受与先前存在的与裂谷相关的基底正断层相关的不连续性控制。主要构造之间构造样式的变化主要与后期正/走滑断裂作用的缩短和影响有关。缩短的变化表现在从 Chickasha-Cement 到 Carter-Knox 和 Cruce 构造的背斜越来越紧密和减轻。一些 EW 构造被 Virgilian 时代走滑和相关的正断层切割，这些正断层在宾夕法尼亚晚期由最大压应力从 NE-SW 旋转到 ENE-WSW 而形成。总之，构造的几何形状、趋势和演化受机械地层、预先存在的基底构造、