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Recent tectonics of Eratosthenes Seamount: an example of seamount deformation during incipient continental collision |
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| Authors: | J Galindo-Zaldívar L Nieto A Robertson J Woodside |
| Institution: | Departamento de Geodinámica, Universidad de Granada, 18071 Granada, Spain, Departamento de Geología, Universidad de Jaén, 23071 Jaén, Spain, Grant Institute, University of Edinburgh, West Mains Road, Edinburgh EH9 3JW, UK, Geomarine Centre, Faculty of Earth Sciences, Free University, De Boelelaan 1085, 1081 HV Amsterdam, The Netherlands, |
| Abstract: | The Eratosthenes Seamount is a continental fragment undergoing collision with Cyprus along the African-Eurasian plate boundary. High-resolution seismic and deep-tow sonar data revealed that extensional deformation is occurring over most of the seamount, whereas compressional deformation was observed within the trench basin to the north and also in the asymmetric basin south of the seamount. This recent tectonic activity has triggered the development of slumps, turbidites and fluid escape structures. Although the 'staircase' bathymetry is similar to that of subducting oceanic seamounts, the distribution and characteristics of structures which develop during collision-subduction are very different. |
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