Passive Margins: Tectonics, Sedimentation and Magmatism
CONTAINS OPEN ACCESS
This volume has evolved from papers written in memory of Professor David Roberts. They summarize the key findings of recent research on passive margins, from tectonics, bathymetry, stratigraphy and sedimentation, structural evolution and magmatism. Papers include analyses of the central and southern Atlantic margins of South America and Africa, papers on magmatism and extension in the NE Brazilian margin and on the Cote de Ivoire margin, rift architectures of the NW Red Sea margin, tectonics of the eastern Mediterranean margin, salt tectonics of passive margins of the Gulf of Mexico and Brazil, and papers on the NW Shelf margin of Australia. The volume provides readers with new insights into the complexities of passive margin systems that are in reality, not so passive.
Estimating palaeobathymetry with quantified uncertainties: a workflow illustrated with South Atlantic data
Published:May 09, 2020
L. Pérez-Díaz, G. Eagles, 2020. "Estimating palaeobathymetry with quantified uncertainties: a workflow illustrated with South Atlantic data", Passive Margins: Tectonics, Sedimentation and Magmatism, K. R. McClay, J. A. Hammerstein
Download citation file:
We present and illustrate a workflow to produce palaeobathymetric reconstructions, using examples from the South Atlantic Ocean. With a recent high-resolution plate kinematic model as the starting point, we calculate an idealized basement surface by applying plate-cooling theory to seafloor ages and integrating the results with depths along the extended continental margins. Then, we refine the depths of this basement surface to account for the effects of sedimentation, variations in crustal thickness and dynamic topography. Finally, the corrected idealized surface is cut along appropriate plate outlines for the desired time slice and reconstructed using appropriate Euler parameters.