Intraplate rift basins, like the inboard sub-basins of the Northern Carnarvon Basin (NCB), host rich energy resources, but their complex geological histories complicate exploration efforts. The paleo-deformation that formed these intraplate rifts also controlled their resource systems distribution. Hence, understanding their complex kinematic and tectonostratigraphic histories can optimise exploration and targeting. However, without forming oceanic seafloor, these regions lack adjacent magnetic seafloor isochrons to constrain paleo-positions of rift margins, rendering kinematic reconstruction nearly impossible. We present a method that constrains the spatiotemporal paleo-distribution of intraplate rift-related deformation and precisely locates paleo-positions of rift margins using time-dependent backstripped subsidence rasters. This method correlates areas with high subsidence rates with rifted regions within extension settings, and we apply it to reconstruct the kinematic evolution of the NCB sub-basin rift.

中文翻译：

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澳大利亚卡那封盆地北部侏罗纪板内裂谷变形的运动学重建

板内裂谷盆地，如北卡那封盆地 (NCB) 的内侧子盆地，蕴藏着丰富的能源资源，但其复杂的地质历史使勘探工作变得复杂。形成这些板内裂谷的古变形也控制了它们的资源系统分布。因此，了解其复杂的运动学和构造地层历史可以优化勘探和瞄准。然而，在不形成大洋海底的情况下，这些区域缺乏相邻的磁海底等时线来限制裂谷边缘的古位置，使得运动学重建几乎不可能。我们提出了一种方法，该方法约束板内裂谷相关变形的时空古分布，并使用依赖于时间的背带沉降栅格精确定位裂谷边缘的古位置。该方法将高沉降率区域与伸展环境中的裂谷区域相关联，我们应用它来重建 NCB 次盆地裂谷的运动学演化。