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Título
Caracterización geoquímica de las capas ricas en materiaorgánica registradas durante el estadio isotópico marino 7 en elMar de Alborán (Mediterráneo occidental)
Otros títulos
Geochemical characterization of the organic rich layers recorded during marine isotope stage 7 in the Alboran Sea (Western Mediterranean)
Autor(es)
Materia
Geoquímica
Estadios isotópicos marinos
Alborán, Mar de
Geochemistry
Barium
Organic rich layers
Marine isotope stage 7
Alboran Sea
Fecha de publicación
2007
Editor
Sociedad Geológica de España (Madrid, España)
Citación
González-Mora, B. y Sierro Sánchez, F. J. (2007). Caracterización geoquímica de las capas ricas en materia orgánica registradas durante el estadio isotópico marino 7 en el Mar de Alborán (Mediterráneo occidental). "Geogaceta", 43, 111-114.
Resumen
Samples from the Alboran Sea (Western Mediterranean) were studied in order to characterise the organicrich layers recorded during marine isotope stage 7 from a geochemical point of view. X ray fluorescence measurements were carried out at a 1cm-resolution and variations in terrigenous and biogenic elements were observed during the whole studied interval (245-190 kyr), suggesting more carbonate production during warmer periods, and more arrival of terrigenous material during lower-sea level substages. Organicrich layers were characterized by high biogenic barium and low Si/Al, which can be interpreted as increasing surface productivity or better preservation of the organic material, and more river discharge due to more abundant precipitations.
Descripción
Este trabajo pretende ampliar el conocimiento que se tenía hasta este momento sobre la señal geoquímica y el origen de las capas ricas en materia orgánica registradas en el de Alborán durante el estadio isotópico 7.
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