Tectonics of the Iberian continental margins and abyssal plains

The tectonic map at scale 1:1,750,000 presented in this work shows an update of the existing knowledge of the main tectonic and volcanic structures along the Iberian continental margins and abyssal plains. The morphotectonic trends around Iberia recorded superposed geodynamic processes linked to the opening of the North Atlantic Ocean since the Mesozoic and the evolution of the Mediterranean Sea during the Cenozoic, as well as the reactivation of Hercynian faults and the formation of new tectonic structures during the Alpine orogeny. This map is based on the interpretation of the digital bathymetric model and other geophysical data from our own studies, and those from other authors. The morphotectonic features in this map provides a basis for the recognition of the tectonic control at lithospheric plate scale and the establishment of potential tectonic and volcanic risk zones. A tectonic map at a scale 1:1,750,000 of the continental margins and abyssal plains of Iberia is presented.This new and complete tectonic map can be the base for further detailed geological and geophysical studies.The compiled tectonic structures shown in the Main Map are available as supplemental online material. A tectonic map at a scale 1:1,750,000 of the continental margins and abyssal plains of Iberia is presented. This new and complete tectonic map can be the base for further detailed geological and geophysical studies. The compiled tectonic structures shown in the Main Map are available as supplemental online material.

本研究展示的1:175万比例尺构造图，更新了伊比利亚大陆边缘及深海平原区域主要构造与火山构造的现有认知。伊比利亚周边的地貌构造格局记录了多期叠加的地球动力学过程：包括中生代以来北大西洋洋盆扩张、新生代地中海演化，以及海西期断裂活化与阿尔卑斯造山运动期间新生构造的形成。本图基于本团队及其他研究者的数字水深模型解译成果与其他地球物理数据编制而成。本图中的地貌构造特征，可为识别岩石圈板块尺度的构造控制作用以及圈定潜在构造与火山风险区提供基础依据。本次研究同时提供了伊比利亚大陆边缘及深海平原的1:175万比例尺构造图。这幅全新且完整的构造图可为后续精细化地质与地球物理研究奠定基础。主图中汇编的构造要素可作为在线补充材料获取。本次研究同时提供了伊比利亚大陆边缘及深海平原的1:175万比例尺构造图。这幅全新且完整的构造图可为后续精细化地质与地球物理研究奠定基础。主图中汇编的构造要素可作为在线补充材料获取。