The Triassic outcrop in the Bazina structure is known among the largest massif in northern Tunisia. Its tectonic setting and sub-surface geometry are related to geodynamics and kinematics in North Africa and western Mediterranean domains. Gravity data processing and interpretation over the Hedil region highlight deep faulting and the geometry of Bazina structure and the neighboring ones. Enhancement of the residual anomaly, which represents the gravity response of sedimentary cover, mainly horizontal gradient map and its maxima, reveals varied oriented lineaments. The E–W conspicuous direction covers and delimits the outcropping Triassic body. However, the NE–SW major direction, highlighting eastward and southward of the Bazina structure, coincides with Cretaceous exposures. Furthermore, less extended N- and NW-trending features were highlighted. Limits and depth of deep gravity causative bodies were located using the Euler deconvolution method.

3D inversion and 2D forward gravity modeling combined with geological outcrops enabled the reconstruction of the Triassic bodies and surrounding structures. The study area reveals piercing diapiric structures and salt wrinkles. This Bazina evaporite exposure corresponds to a deep-rooted diapir marked by a southward evaporite lateral outpouring related to the Eocene Pyrenean compressive tectonic phase. The evaporite lateral flow should be controlled by reactivation of preexisting regional faults with its thermodynamic conditions and asymmetrical basin geometry.

巴齐纳构造中的三叠纪露头是突尼斯北部最大的地块之一。其构造环境和地下几何形状与北非和西地中海地区的地球动力学和运动学有关。赫迪尔地区的重力数据处理和解释突出了深断层以及巴齐纳构造和邻近构造的几何形状。残余异常的增强代表了沉积盖层的重力响应，主要是水平梯度图及其最大值，揭示了不同的定向地貌。东西向的显着方向覆盖并界定了露出地面的三叠纪体。然而，NE-SW 主要方向，突出了 Bazina 构造的东向和南向，与白垩纪暴露一致。此外，突出显示了较少扩展的北向和西北向特征。使用欧拉反卷积方法定位了深层重力致病体的极限和深度。

3D 反演和 2D 正向重力建模与地质露头相结合，能够重建三叠纪天体和周围结构。研究区域揭示了刺穿的底辟结构和盐皱。这个 Bazina 蒸发岩暴露对应于一个根深蒂固的底辟，其特征是与始新世比利牛斯山压缩构造阶段相关的向南蒸发岩横向流出。蒸发岩侧向流应通过先前存在的区域断层及其热力学条件和不对称盆地几何形状的重新激活来控制。