Please use this identifier to cite or link to this item:
https://hdl.handle.net/2445/163196
Title: | Registro de la variabilidad climática de escala milenaria durante el último cliclo glaciar en los sedimentos de la cuenca Argelo-Balear |
Author: | Frigola Ferrer, Jaime I. Moreno Caballud, Ana Canals Artigas, Miquel Cacho Lascorz, Isabel Colmenero, E. Sierro Sánchez, Francisco Javier Flores Villarejo, José Abel |
Keywords: | Paleoclimatologia Sediments glacials Paleoclimatology Drift |
Issue Date: | 2004 |
Publisher: | Sociedad Geológica de España |
Abstract: | bulk element composition and grain-size distribution to characterize the temporal evolution of the terrigenous input to this area throughout the last 50 ka. The high-resolution elementary profiles show high frequency oscillations, particularly of Si, Ti and K contents, associated with terrigenous input variability. These fluctuations mark significant changes in the source areas and/or in the nature of transport and sedimentation processes most likely related to abrupt changes in oceanographic and atmospheric conditions. The Menorca core records were compared with the geochemical results of a previously studied core from the Alboran Sea, from where it became obvious a similar behaviour in some of the terrigeneous elements at both core locations. The obtained records vary with a clear Dansgaard-Oeschger periodicity reaching higher values during the North Atlantic's Heinrich Events. These results evidence the presence of a millennial-scale synchronous pattern in the Western Mediterranean in terms of deposition of terrigenous material. In addition, grain-size analyses of Menorca core reveal rhythmic episodes of coarser particle inputs during the Holocene likely related to shifts in the intensity of deep-water currents. |
Note: | Reproducció del document publicat a: |
It is part of: | Geo-Temas, 2004, vol. 6, num. 5, p. 97-100 |
URI: | https://hdl.handle.net/2445/163196 |
ISSN: | 1576-5172 |
Appears in Collections: | Articles publicats en revistes (Dinàmica de la Terra i l'Oceà) |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
549898.pdf | 1.59 MB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.