2026-04-13T02:41:59Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/1631962025-12-05T17:09:05Zcom_2072_1057col_2072_478804col_2072_478917

urn:hdl:2445/163196 Registro de la variabilidad climática de escala milenaria durante el último cliclo glaciar en los sedimentos de la cuenca Argelo-Balear Frigola Ferrer, Jaime I. Moreno Caballud, Ana Canals Artigas, Miquel Cacho Lascorz, Isabel Colmenero, E. Sierro Sánchez, Francisco Javier Flores Villarejo, José Abel Paleoclimatologia Sediments glacials Paleoclimatology Drift 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. 2020-05-30T07:31:05Z 2020-05-30T07:31:05Z 2004 2020-05-30T07:31:06Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Reproducció del document publicat a: Geo-Temas, 2004, vol. 6, num. 5, p. 97-100 (c) Sociedad Geológica de España, 2004 info:eu-repo/semantics/openAccess Sociedad Geológica de España Articles publicats en revistes (Dinàmica de la Terra i l'Oceà)