13 million years of seafloor spreading throughout the Red Sea Basin

Nico Augustin (), Froukje M. Zwan, Colin W. Devey and Bryndís Brandsdóttir
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Nico Augustin: GEOMAR Helmholtz Centre for Ocean Research
Froukje M. Zwan: King Abdullah University of Science and Technology (KAUST)
Colin W. Devey: GEOMAR Helmholtz Centre for Ocean Research
Bryndís Brandsdóttir: Institute of Earth Sciences, Science Institute, University of Iceland

Nature Communications, 2021, vol. 12, issue 1, 1-10

Abstract: Abstract The crustal and tectonic structure of the Red Sea and especially the maximum northward extent of the (ultra)slow Red Sea spreading centre has been debated—mainly due to a lack of detailed data. Here, we use a compilation of earthquake and vertical gravity gradient data together with high-resolution bathymetry to show that ocean spreading is occurring throughout the entire basin and is similar in style to that at other (ultra)slow spreading mid-ocean ridges globally, with only one first-order offset along the axis. Off-axis traces of axial volcanic highs, typical features of (ultra)slow-spreading ridges, are clearly visible in gravity data although buried under thick salt and sediments. This allows us to define a minimum off-axis extent of oceanic crust of

Date: 2021
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DOI: 10.1038/s41467-021-22586-2

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