Onset and sedimentary evolution of the Almanzora-Alias-Garrucha canyon (SW Mediterranean Sea): a complex interplay between geological processes
5th International Network for Submarine Canyon Investigation and Scientific Exchange International Symposium (INCISE), 14-18 June 2021
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2021-06-14
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dig-icm-es-10261-2708622022-12-14T12:20:05Z Onset and sedimentary evolution of the Almanzora-Alias-Garrucha canyon (SW Mediterranean Sea): a complex interplay between geological processes Ercilla, Gemma Casas, David Estrada, Ferran Alonso, Belén Casalbore, Daniele Bárcenas, Patricia Ceramicola, Silvia Chiocci, Francesco L. Idarraga, Javier López-González, Nieves Nespereira, José Rodríguez García, Juan Antonio Teixeira, Manuel Vázquez, Juan Tomás Yenes, Mariano 5th International Network for Submarine Canyon Investigation and Scientific Exchange International Symposium (INCISE), 14-18 June 2021 The combination of high-resolution bathymetry, seismic (parametric, airguns) and image (hull mounted & AUV multi-beam echo sounders, ROV) records have allowed to decipher the onset and sedimentary evolution of the Almanzora-Alias-Garrucha canyon (hereafter, Garrucha Canyon) in the SW Mediterranean Sea. The onset of this canyon occurred in subaerial conditions during the Messinian Salinity Crisis at the end of the Miocene. The Plio-Quaternary stratigraphy and depositional architecture of the canyon floor and their deposits indicate that: canyon incision has predominated in the upper reaches; the widening of the canyon floor started at the beginning of the Quaternary; the canyon-fill deposits point to longitudinal and lateral relocations of the valley; predominance of sedimentary instability deposits that result from repeated near-surface slope failures in both margins; and the present-day canyon floor is affected throughout by cyclic steps associated with the passage of recent/subrecent gravity driven flows favoured by the canyon head interaction with coastal and fluvio-marine processes. Also, mass-transport deposits involving metric blocks, erosive scour fields and slide scars have been locally mapped. The history of the Garrucha canyon system results from the interplay between the Messinian salinity Crisis event; the tectonic southeastwards tilting of the continental margin due to the coastal tectonic indentation of the Arc of Aguilas; the sea-level changes during the Plio-Quaternary; the semiconfined configuration of the subbasin where the canyon incises; and the interception of canyon head with the coastal and fluviomarine processes. 2022-05-30T10:20:13Z 2022-05-30T10:20:13Z 2021-06-14 2022-05-30T10:20:14Z póster de congreso http://purl.org/coar/resource_type/c_6670 5th International Network for Submarine Canyon Investigation and Scientific Exchange International Symposium (2021) http://hdl.handle.net/10261/270862 Sí open |
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5th International Network for Submarine Canyon Investigation and Scientific Exchange International Symposium (INCISE), 14-18 June 2021 |
| format |
póster de congreso |
| author |
Ercilla, Gemma Casas, David Estrada, Ferran Alonso, Belén Casalbore, Daniele Bárcenas, Patricia Ceramicola, Silvia Chiocci, Francesco L. Idarraga, Javier López-González, Nieves Nespereira, José Rodríguez García, Juan Antonio Teixeira, Manuel Vázquez, Juan Tomás Yenes, Mariano |
| spellingShingle |
Ercilla, Gemma Casas, David Estrada, Ferran Alonso, Belén Casalbore, Daniele Bárcenas, Patricia Ceramicola, Silvia Chiocci, Francesco L. Idarraga, Javier López-González, Nieves Nespereira, José Rodríguez García, Juan Antonio Teixeira, Manuel Vázquez, Juan Tomás Yenes, Mariano Onset and sedimentary evolution of the Almanzora-Alias-Garrucha canyon (SW Mediterranean Sea): a complex interplay between geological processes |
| author_facet |
Ercilla, Gemma Casas, David Estrada, Ferran Alonso, Belén Casalbore, Daniele Bárcenas, Patricia Ceramicola, Silvia Chiocci, Francesco L. Idarraga, Javier López-González, Nieves Nespereira, José Rodríguez García, Juan Antonio Teixeira, Manuel Vázquez, Juan Tomás Yenes, Mariano |
| author_sort |
Ercilla, Gemma |
| title |
Onset and sedimentary evolution of the Almanzora-Alias-Garrucha canyon (SW Mediterranean Sea): a complex interplay between geological processes |
| title_short |
Onset and sedimentary evolution of the Almanzora-Alias-Garrucha canyon (SW Mediterranean Sea): a complex interplay between geological processes |
| title_full |
Onset and sedimentary evolution of the Almanzora-Alias-Garrucha canyon (SW Mediterranean Sea): a complex interplay between geological processes |
| title_fullStr |
Onset and sedimentary evolution of the Almanzora-Alias-Garrucha canyon (SW Mediterranean Sea): a complex interplay between geological processes |
| title_full_unstemmed |
Onset and sedimentary evolution of the Almanzora-Alias-Garrucha canyon (SW Mediterranean Sea): a complex interplay between geological processes |
| title_sort |
onset and sedimentary evolution of the almanzora-alias-garrucha canyon (sw mediterranean sea): a complex interplay between geological processes |
| publishDate |
2021-06-14 |
| url |
http://hdl.handle.net/10261/270862 |
| work_keys_str_mv |
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