Interregional geological maps hold important information for geodynamic models. Here, we use such maps to visualize major conformable and unconformable contacts at interregional scales and at the level of geologic series from the Upper Jurassic onward across North and South America, Europe, Africa and Australia. We extract hiatus information from these paleogeological maps, which we plot in a paleogeographical reference frame to link the maps to the plate and plume modes of mantle convection. We assume that interregional patterns of hiatus surfaces are proxy records of continent-scale mantle-induced vertical motion of the lithosphere. We find significant differences in the distribution of hiatus across and between continents at the timescale of geologic series, that is ten to a few tens of millions of years (Myrs). This is smaller than the mantle transit time, which, as the timescale of convection, is about 100–200 Myrs. Our results imply that different timescales for convection and topography in convective support must be an integral component of time-dependent geodynamic Earth models, consistent with the presence of a weaker upper mantle relative to the lower mantle. Additional geological constraints together with interregional geological maps at the resolution of stages (1–2 Myrs), are needed to assist in future geodynamic interpretations of interregional geologic hiatus.

中文翻译：

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自上侏罗纪以来大西洋领域和澳大利亚的大陆尺度裂隙图以及与地幔流引起的动态地形的联系

区域间地质图为地球动力学模型提供重要信息。在这里，我们使用这样的地图来可视化区域间尺度和从上侏罗纪开始跨越北美和南美、欧洲、非洲和澳大利亚的地质系列水平的主要整合接触和不整合接触。我们从这些古地质图中提取间断信息，我们将其绘制在古地理参考框架中，以将地图与地幔对流的板块和羽流模式联系起来。我们假设裂隙表面的区域间模式是大陆尺度地幔引起的岩石圈垂直运动的代理记录。我们发现在地质序列的时间尺度上，大陆之间和大陆之间的间断分布存在显着差异，即十到几千万年（Myrs）。这比地幔传输时间小，作为对流的时间尺度，大约为 100-200 迈尔。我们的结果意味着对流支持中的对流和地形的不同时间尺度必须是随时间变化的地球动力学地球模型的一个组成部分，这与相对于下地幔存在较弱的上地幔一致。需要额外的地质约束以及阶段分辨率（1-2 Myrs）的区域间地质图，以协助未来区域间地质中断的地球动力学解释。与相对于下地幔存在较弱的上地幔一致。需要额外的地质约束以及阶段分辨率（1-2 Myrs）的区域间地质图，以协助未来区域间地质中断的地球动力学解释。与相对于下地幔存在较弱的上地幔一致。需要额外的地质约束以及阶段分辨率（1-2 Myrs）的区域间地质图，以协助未来区域间地质中断的地球动力学解释。