Global Cenozoic Paleobathymetry with a focus on the Northern Hemisphere Oceanic Gateways

We provide a set of paleobathymetric/topographic reconstructions for the Cenozoic time (66 - 0 Ma). We have re-evaluated the evolution of the Northern hemisphere oceanic gateways (i.e. the Fram Strait, Greenland – Scotland Ridge, the Central American Seaway, and the Tethys Seaway) and embedded their tectonic histories in a new global paleobathymetry and topography model. Our new paleobathymetry model incorporates Northeast Atlantic paleobathymetric variations due to Iceland mantle plume activity, updated regional plate kinematics, and models for the oceanic lithospheric age, sediment thickness, and reconstructed oceanic plateaus and microcontinents. We also provide a global paleotopography model based on new and previously published regional models.我们提供了一套新生代（66-0 Ma）时期的古水深/古地形重建（paleobathymetric/topographic reconstructions）数据集。本研究重新评估了北半球海洋通道（即弗拉姆海峡（Fram Strait）、格陵兰-苏格兰海岭（Greenland – Scotland Ridge）、中美洲海道（Central American Seaway）以及特提斯海道（Tethys Seaway））的演化历程，并将其构造历史嵌入至全新的全球古水深与古地形模型中。我们的新型古水深模型纳入了由冰岛地幔柱活动引发的东北大西洋古水深变化、更新后的区域板块运动学模型，以及大洋岩石圈年龄、沉积物厚度、重建大洋高原与微大陆的相关模型。此外，我们还基于全新及已发表的区域模型，提供了一套全球古地形模型。