Deformación de la superficie del fondo marino durante el Cuaternario en el Canal de Mallorca (Mediterráneo Occidental)
- J.T. Vázquez 1
- O. Sánchez-Guillamón 1
- D. Palomino 1
- N. Martínez-Carreño 1
- P. Bárcenas 1
- M.C. Fernández-Puga 2
- L.M. Fernández Salas 1
- O. Tello 1
- N. López González 1
- M. Gómez Ballesteros 1
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1
Instituto Español de Oceanografía
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2
Universidad de Cádiz
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ISSN: 1576-5172
Ano de publicación: 2021
Título do exemplar: X Congreso Geológico de España
Número: 18
Páxinas: 774
Tipo: Artigo
Outras publicacións en: Geotemas (Madrid)
Resumo
The study of the Balearic Promontory central sector, between Ibiza and Mallorca Islands, using multibeam bathymetry and parametric echosounder profiles has allowed to identify several morphological features at different scales related to tecto- nics: 1- NNE-SSW trending seamounts Ausias March (AM) and Ses Olives (SO) at the east of Ibiza and Emile Baudot on the escarpment of the same name ; 2- NE-SW ridges located to the south of Mallorca island and to the south of SO, both interpreted as folded anticlines in parametric profiles; 3- normal fault scarps and tectonic depressions with NNE-SSW to N-S trends located to the NE of the North ridge, to the W of SO and running across AM; 4- straight strings of pockmarks that in some cases develop elongated depressions and are emplaced on normal faults recognized in the parametric profiles; 5- slide scars and deposits around the main reliefs. The seismicity is not important in the Balearic Promontory. Therefore, these mor- phological types of tectonic origin, or associated, must be generated by slow deformation, probably related to the mobility of a Messinian salt layer located at the base of the Pliocene-Quaternary cover (Acosta et al., 2004).