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DIGITAL.CSIC
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Reconstrucción de las áreas fuente de polvo eólico depositado en el drift contornítico asociado al monte submarino Villa de Djibouti (mar de Alborán)

Authors: López González, Nieves; Alonso, Belén; Casas, David; Juan, Carmen; Ercilla, Gemma; Bozzano, Graziella; Cacho, Isabel; +5 Authors

Reconstrucción de las áreas fuente de polvo eólico depositado en el drift contornítico asociado al monte submarino Villa de Djibouti (mar de Alborán)

Abstract

[ES] Se ha realizado el estudio del registro sedimentario del drift con-tornítico asociado al monte submarino Villa de Djibouti (mar de Al-borán, Mediterráneo occidental) con el fin de reconstruir las áreas fuente de polvo eólico desde el Pleistoceno Superior al Holoceno. Se han podido diferenciar tres end-members (EM1 grueso, EM2 limoso y EM3 fino) que caracterizan la distribución granulométrica de las principales poblaciones de polvo eólico. Las áreas fuente más pro-bables de estas partículas son las cuencas sedimentarias y los de-siertos, así como las cuencas cratónicas del corredor Sahara-Sahel, cuya prevalencia en el registro sedimentario experimenta un cambio durante la transición de MIS 5 a MIS 4. Se han reconocido algunos aportes puntuales del monte coincidiendo con periodos de bajada del nivel del mar, pero no se han encontrado evidencias de aportes fluviales en los depósitos contorníticos

[EN] The sedimentary record of the contourite drift associated with the Djibouti Ville seamount (Alboran Sea, western Mediterranean) has been studied to reconstruct the source areas of the aeolian dust from Late Pleistocene to Holocene. Three end-member grain-size distributions address for different aeolian populations (coarse EM1, silty EM2 and fine EM3). For these particles, the most probable sour-ce areas are the Saharan sedimentary basins and deserts as well as the cratonic basins of the Sahara-Sahel corridor, whose prevalence in the core record changes by the MIS 5 to MIS 4 transition. Some punctual sediment inputs from the seamount have been recognized during sea-level low-stand but there is no evidence for fluvial supply in the drift deposits

Este trabajo ha sido financiado por los proyectos MONTERA (CTM2009-14157-C02), SAGAS (CTM2005-08071-C03-02/MAR) y FAUCES (CTM2015-65461-C2-R) y por los fondos FEDER

67 Sesión Científica de la Sociedad Geológica de España, 22-23 de noviembre de 2019, Peñarroya - Pueblonuevo, Córdoba.-- 4 pages, 2 figures

With the funding support of the ‘Severo Ochoa Centre of Excellence’ accreditation (CEX2019-000928-S), of the Spanish Research Agency (AEI)

Peer reviewed

Country
Spain
Keywords

Sedimentos contorníticos, Monte Villa de Djibouti, Djibouti Ville seamount, Polvo eólico, Aeolian dust, Contourite sediments, Djibouti Ville sea-mount, Mar de Alborán, Alboran Sea

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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