dc.contributor.author | Durán, Ruth | |
dc.contributor.author | Lobo, Francisco José | |
dc.contributor.author | Ribó, Marta | |
dc.contributor.author | García, Marga | |
dc.contributor.author | Somoza, Luis | |
dc.date.accessioned | 2019-04-30T12:35:49Z | |
dc.date.available | 2019-04-30T12:35:49Z | |
dc.date.issued | 2018-05-07 | |
dc.identifier.citation | Durán, R. [et al.]. Variability of Shelf Growth Patterns along the Iberian Mediterranean Margin: Sediment Supply and Tectonic Influences. Geosciences 2018, 8, 168; doi:10.3390/geosciences8050168. | es_ES |
dc.identifier.issn | 2076-3263 | |
dc.identifier.uri | http://hdl.handle.net/10481/55549 | |
dc.description.abstract | Clinoform depositional features along the Iberian Mediterranean margin are investigated
in this study, with the aim of establishing the causes of their varied shapes and other characteristics.
We have analyzed the broad-scale margin physiography and seismic stratigraphic patterns based
on high-resolution bathymetric data and previously interpreted seismic data. In addition, we have
evaluated regional supply conditions and the uplift-subsidence regime of the different shelf sectors.
The upper Quaternary record is strongly dominated by shelf-margin regressive wedges affected
by the prevailing 100 ka cyclicity. However, the margins exhibit considerable lateral variability,
as the result of the balance between the amount of sediment supply and the uplift-subsidence
relationship. Three major shelf sectors with distinct morpho-sedimentary features have been defined.
The relatively narrow northern shelves (Roses, La Planassa and Barcelona) are supplied by discrete
river outlets that collectively constitute a linear source and are mainly affected by tectonic tilting.
The wide middle shelves (Ebro Shelf, the Gulf of Valencia, and the Northern Arc) receive the sediment
supply from the large Ebro River and other medium rivers. Although the tectonic regime changes
laterally (strong subsidence in the north and uplift in the south), shelf growth is maintained by
lateral advection of sediments. The southern shelves (the Southern Arc and the northern Alboran
Shelf) are very abrupt and narrow because of the uplifting Betic Cordillera, and the torrential fluvial
regimes that determine a very efficient sediment by-pass toward the deep basin. Submarine canyons
deeply incised in the continental margin constitute a key physiographic feature that may enhance
the transport of sediment to the deep sea or individualize shelf sectors with specific sedimentation
patterns, as occurs in the Catalan margin. | es_ES |
dc.description.sponsorship | This research was funded by the Spanish Ministry of Economy, Industry and Competitiveness projects
CGL2011-30302-C02-02, CGL2015-74216-JIN, CTM2015-65142-R and CTM2017-88237-P. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | MDPI | es_ES |
dc.rights | Atribución 3.0 España | * |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ | * |
dc.subject | Continental shelves | es_ES |
dc.subject | Geomorphology | es_ES |
dc.subject | Seismic stratigraphy | es_ES |
dc.subject | Iberian Peninsula | es_ES |
dc.subject | Mediterranean Sea | es_ES |
dc.subject | Sea-level changes | es_ES |
dc.subject | Uplift | es_ES |
dc.subject | Subsidence | es_ES |
dc.subject | Sediment supply | es_ES |
dc.title | Variability of Shelf Growth Patterns along the Iberian Mediterranean Margin: Sediment Supply and Tectonic Influences | es_ES |
dc.type | journal article | es_ES |
dc.rights.accessRights | open access | es_ES |