Seismic evidence of current-controlled sedimentation in the Alboran Sea during the Pliocene and Quaternary: Palaeoceanographic implications

Seismic evidence of current-controlled sedimentation in the Alboran Sea during the Pliocene and Quaternary: Palaeoceanographic implications

Special issue The contourite log-book: significance for palaeoceanography, ecosystems and slope instability.-- Juan, Carmen... et al.-- 20 pages, 10 figures, 2 tables

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Main Authors: Juan, Carmen, Ercilla, Gemma, Estrada, Ferran, Alonso, Belén, Casas, David, García, Marga, Farran, Marcel-lí, Ammar, Abdellah
Other Authors: Ministerio de Economía y Competitividad (España)
Format: artículo biblioteca
Published: Elsevier 2016-08
Subjects:Contourites, Alboran Sea, Pliocene and quaternary, Stratigraphy, Palaeoceanography,
Online Access:http://hdl.handle.net/10261/135538
http://dx.doi.org/10.13039/501100003329
http://dx.doi.org/10.13039/501100004837
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spelling dig-icm-es-10261-1355382020-12-10T11:41:23Z Seismic evidence of current-controlled sedimentation in the Alboran Sea during the Pliocene and Quaternary: Palaeoceanographic implications Juan, Carmen Ercilla, Gemma Estrada, Ferran Alonso, Belén Casas, David García, Marga Farran, Marcel-lí Ammar, Abdellah Ministerio de Economía y Competitividad (España) Ministerio de Ciencia e Innovación (España) Contourites Alboran Sea Pliocene and quaternary Stratigraphy Palaeoceanography Special issue The contourite log-book: significance for palaeoceanography, ecosystems and slope instability.-- Juan, Carmen... et al.-- 20 pages, 10 figures, 2 tables A seismic analysis of the Pliocene and Quaternary stratigraphy was conducted in the Alboran Sea (westernmost Mediterranean) using more than 1250 profiles consisting of single- and multi-channel seismic records. This allowed for the updating and renaming of the stratigraphic boundaries and the establishment of a new Pliocene and Quaternary seismic stratigraphy for the Alboran Sea, after the relocation of the base of the Quaternary from 1.8 to 2.6 Ma. The boundaries of the stratigraphic division are as follows: the Messinian (M at 5.96 to 5.33 Ma), the intra-lower Pliocene (P0 at ca. 4.5 Ma), the top of the Zanclean (P1 at ca.3.3 Ma), the base of the Quaternary (BQD at ca. 2.6 Ma), the top of the Gelasian (Q0 at ca. 1.8 Ma), the intra-lower Quaternary (Q1 at ca. 1.12 Ma), and the top of the Calabrian (Q2 at ca. 0.7 Ma). Additionally, for the first time, the seismic analysis allowed us to present and discuss the evidence of contourite features reaching the scale of the Alboran Basin. Contourite drifts (plastered, sheeted, elongated separated and confined monticular drifts) and erosive features (terraces, scarps, moats and channels) were developed under the continuous influence of Mediterranean water masses (light and dense), after the opening of the Strait of Gibraltar in the latest Miocene (5.46 Ma). There are at least two primary factors controlling the contourite features, based on the seismic analysis, as follows: i) tectonics, which has governed the relocation of the main Mediterranean flow pathways and their circulation patterns; and ii) climate, which has influenced both water mass conditions (interfaces) and hinterland sediment sources, conditioning the morpho-seismic expression and growth pattern of the drifts and terrace formation (dimensions). The distribution of contourite features through time and space has allowed us to propose the three following main scenarios for ocean circulation since the opening of the Strait of Gibraltar: Atlantic Zanclean flooding; the Pliocene sea, with two different stages for the dense circulation; and the Quaternary sea, with well-defined and stable interfaces for the Atlantic Waters (AW), light and dense Mediterranean waters This work has been supported by the research projects CONTOURIBER (Ref. CTM 2008-06399-C04) and MONTERA (Ref. CTM 2009-14157-C02-02) of the Spanish Science and Innovation Ministry and MOWER (Ref. CTM 2012-39599-C03-02) of the Spanish Ministry of Economy and Competitiveness Peer Reviewed 2016-08-16T07:11:42Z 2016-08-16T07:11:42Z 2016-08 2016-08-16T07:11:43Z artículo http://purl.org/coar/resource_type/c_6501 doi: 10.1016/j.margeo.2016.01.006 issn: 0025-3227 Marine Geology 378: 292-311 (2016) http://hdl.handle.net/10261/135538 10.1016/j.margeo.2016.01.006 http://dx.doi.org/10.13039/501100003329 http://dx.doi.org/10.13039/501100004837 https://dx.doi.org/10.1016/j.margeo.2016.01.006 Sí none Elsevier
institution ICM ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-icm-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del ICM España
topic Contourites
Alboran Sea
Pliocene and quaternary
Stratigraphy
Palaeoceanography
Contourites
Alboran Sea
Pliocene and quaternary
Stratigraphy
Palaeoceanography
spellingShingle Contourites
Alboran Sea
Pliocene and quaternary
Stratigraphy
Palaeoceanography
Contourites
Alboran Sea
Pliocene and quaternary
Stratigraphy
Palaeoceanography
Juan, Carmen
Ercilla, Gemma
Estrada, Ferran
Alonso, Belén
Casas, David
García, Marga
Farran, Marcel-lí
Ammar, Abdellah
Seismic evidence of current-controlled sedimentation in the Alboran Sea during the Pliocene and Quaternary: Palaeoceanographic implications
description Special issue The contourite log-book: significance for palaeoceanography, ecosystems and slope instability.-- Juan, Carmen... et al.-- 20 pages, 10 figures, 2 tables
author2 Ministerio de Economía y Competitividad (España)
author_facet Ministerio de Economía y Competitividad (España)
Juan, Carmen
Ercilla, Gemma
Estrada, Ferran
Alonso, Belén
Casas, David
García, Marga
Farran, Marcel-lí
Ammar, Abdellah
format artículo
topic_facet Contourites
Alboran Sea
Pliocene and quaternary
Stratigraphy
Palaeoceanography
author Juan, Carmen
Ercilla, Gemma
Estrada, Ferran
Alonso, Belén
Casas, David
García, Marga
Farran, Marcel-lí
Ammar, Abdellah
author_sort Juan, Carmen
title Seismic evidence of current-controlled sedimentation in the Alboran Sea during the Pliocene and Quaternary: Palaeoceanographic implications
title_short Seismic evidence of current-controlled sedimentation in the Alboran Sea during the Pliocene and Quaternary: Palaeoceanographic implications
title_full Seismic evidence of current-controlled sedimentation in the Alboran Sea during the Pliocene and Quaternary: Palaeoceanographic implications
title_fullStr Seismic evidence of current-controlled sedimentation in the Alboran Sea during the Pliocene and Quaternary: Palaeoceanographic implications
title_full_unstemmed Seismic evidence of current-controlled sedimentation in the Alboran Sea during the Pliocene and Quaternary: Palaeoceanographic implications
title_sort seismic evidence of current-controlled sedimentation in the alboran sea during the pliocene and quaternary: palaeoceanographic implications
publisher Elsevier
publishDate 2016-08
url http://hdl.handle.net/10261/135538
http://dx.doi.org/10.13039/501100003329
http://dx.doi.org/10.13039/501100004837
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