Publicación Artículo científico (article).

Active Tectonics of the North Tunisian Continental Margin

Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/268709
Digital.CSIC. Repositorio Institucional del CSIC
  • Camafort Blanco, Miquel
  • Ranero, César R.
  • Gràcia, Eulàlia
20 pages, 19 figures, 1 table.-- Data Availability Statement: The original seismic images and maps used for this publication are available online (at https://doi.org/10.5281/zenodo.6350585, A poorly defined boundary between the Nubia and Eurasian plates runs along the Northern Tunisian continental margin. The Tunisia margin is deformed by a slow NW–SE trending convergence resulting in a diffuse deformation zone with scarce and scattered seismicity compared to the seismic activity into the neighboring regions to the east and west along the boundary. The area has been poorly studied and therefore its recent evolution is almost unknown, particularly offshore. Here, we present a structural analysis of the active tectonics in this submarine continental margin. The data used for this analysis are high-resolution bathymetric maps together with parametric echosounder images which have allowed to obtain a map of active faulting with unprecedented detail. The structural analysis supports a dominantly transpressive to compressive component of faulting, resulting from the current regional NW–SE trending compressive regime between plates. The North-eastern Domain of the study region contains the highest number of active faults with numerous pockmarks aligned along them. This study shows that the plate boundary across the North Tunisia margin is incipient and poorly developed, which may be due to the fact that deformation is partitioned over a large number of structures, each accommodating a small percentage of convergence, with the exception of the Hayat fault system. The Hayat reverse fault, striking WSW–ENE, is the largest fault system that comparatively may accommodate a greater amount of displacement, and is probably responsible for the uplift of the North-eastern Domain of the continental margin, Data collection and MC were supported by the project Geomargen-2 funded by REPSOL. The work was also supported by the EU project EMODnet-HRSM-2. Additional funding came from the Spanish Ministry of Science and Innovation projects: CTM2011-30400-C02-01 “HADES,” CGL2011-30005-C02-02 “SHAKE,” CTM2015-70155-R “INSIGHT,” PID2019-104668RB-I00 “STRENGTH,” CTM2015-71766-R “FRAME,” and PID2019-109559RB-I00 “ATLANTIS.” ICM has also had funding support of the “Severo Ochoa Centre of Excellence” accreditation (CEX2019-000928-S), of the Spanish Research Agency (AEI), Peer reviewed
 

DOI: http://hdl.handle.net/10261/268709
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/268709

HANDLE: http://hdl.handle.net/10261/268709
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/268709
 
Ver en: http://hdl.handle.net/10261/268709
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/268709

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