Resumen de El registro de cambios climáticos holocenos a partir del análisis geoquímico: Río Palmones (Bahía de Algeciras)
Ana María García Blázquez, Luis de Luque Ripoll, José Luis Goy Goy, Javier Lario, Sergio Sánchez Moral, Cristino José Dabrio González, Francisco Borja Barrera
The PAM99-2 core has an extension of 6.45 meters and includes the Holocene (last 7000 BP). We study how a development of geochemical index can be used to identify climatic variations occurred in this area. The Al, Fe, Ti, K and Mg are proxies of the detritical input and more fluvial influence in the studied basin produced during humid climatic conditions. The Mn, Ba and Sr show similar variations but less pronounced. The Ca is more influenced by the presence of shells and then it is not a good climatic proxy. The Si is correlated with the presence of sands and quartz. There are four different zones recording alternacy of humid-arid conditions. Some apparent contradictions between faunal assemblage composition and geochemical data have been observed
