Revealing the last 13,500 years of environmental history from the multiproxy record of a mountain lake (Lago Enol, northern Iberian Peninsula)

This is the author's accepted manuscript. The final publication is available at Springer via http://dx.doi.org/10.1007/s10933-009-9387-7.We present the Holocene sequence from Lago Enol (43°16′N, 4°59′W, 1,070 m a.s.l.), Cantabrian Mountains, northern Spain. A multiproxy analysis provided comprehensive information about regional humidity and temperature changes. The analysis included sedimentological descriptions, physical properties, organic carbon and carbonate content, mineralogy and geochemical composition together with biological proxies including diatom and ostracod assemblages. A detailed pollen study enabled reconstruction of variations in vegetation cover, which were interpreted in the context of climate changes and human impact. Four distinct stages were recognized for the last 13,500 years: (1) a cold and dry episode that includes the Younger Dryas event (13,500–11,600 cal. year BP); (2) a humid and warmer period characterizing the onset of the Holocene (11,600–8,700 cal. year BP); (3) a tendency toward a drier climate during the middle Holocene (8,700–4,650 cal. year BP); and (4) a return to humid conditions following landscape modification by human activity (pastoral activities, deforestation) in the late Holocene (4,650–2,200 cal. year BP). Superimposed on relatively stable landscape conditions (e.g. maintenance of well established forests), the typical environmental variability of the southern European region is observed at this site.The Spanish Inter-Ministry Commission of Science and Technology (CICYT), the Spanish National Parks agency, the European Commission, the Spanish Ministry of Science, and the European Social Fund

Revealing the last 13,500 years of environmental history from the multiproxy record of a mountain lake (Lago Enol, northern Iberian Peninsula)

This is the author's accepted manuscript. The final publication is available at Springer via http://dx.doi.org/10.1007/s10933-009-9387-7.We present the Holocene sequence from Lago Enol (43°16′N, 4°59′W, 1,070 m a.s.l.), Cantabrian Mountains, northern Spain. A multiproxy analysis provided comprehensive information about regional humidity and temperature changes. The analysis included sedimentological descriptions, physical properties, organic carbon and carbonate content, mineralogy and geochemical composition together with biological proxies including diatom and ostracod assemblages. A detailed pollen study enabled reconstruction of variations in vegetation cover, which were interpreted in the context of climate changes and human impact. Four distinct stages were recognized for the last 13,500 years: (1) a cold and dry episode that includes the Younger Dryas event (13,500–11,600 cal. year BP); (2) a humid and warmer period characterizing the onset of the Holocene (11,600–8,700 cal. year BP); (3) a tendency toward a drier climate during the middle Holocene (8,700–4,650 cal. year BP); and (4) a return to humid conditions following landscape modification by human activity (pastoral activities, deforestation) in the late Holocene (4,650–2,200 cal. year BP). Superimposed on relatively stable landscape conditions (e.g. maintenance of well established forests), the typical environmental variability of the southern European region is observed at this site.The Spanish Inter-Ministry Commission of Science and Technology (CICYT), the Spanish National Parks agency, the European Commission, the Spanish Ministry of Science, and the European Social Fund

El registro holoceno del estuario del Guadalquivir en el área de Sevilla: aproximación geoarqueológica

Resumen del trabajo presentado en la XII Reunión Nacional de Cuaternario, celebrada en Ávila (España), en 2007We study the sedimentary internal area filling of Guadalquivir estuary, near Seville. The sediment samples come from two cores drilled in San Fernando Street, located to the south of the historical town. They are separated about 200 m and they have deepened something more than 18 m, reaching the geologic formation of Margas Azules (late Miocene). Methodologically, we used sedimentology, palynology (twenty-two samples distributed between 2 m and 12.35 m of depth) and radiocarbon data (six samples spread between 4 m and 12 m of depth), as well as the analysis of the archaeological record. All it allows to establish a palaeogeographic sequence characterised by three great phases: marine transgression episode (Lower-middle Holocene vertical aggradation); alluvial episode with final progressive human influence (Middle-recent Holocene lateral progradation); and urban occupation episode with cyclic alluvial influence (Recent Holocene).Peer reviewe

Informe-memoria de la I.A.U. en el S.G. SS- 1 (Parque de Miraflores y Centro de Congresos de Córdoba). Segunda Fase

In this paper are exposed the results obtained from the archeological works carried out on the area of Miraflores' Park and Córdoba Congress Center of (2001-2003). Amoung all the archeological items found, structures from the emirate age identified as being part of the Saqunda suburb are remarkable. This work is focused on their description and analysis.En este trabajo presentamos los resultados obtenidos en la I.A.U. realizada en el Parque de Miraflores y en el Centro de Congresos de Córdoba (2001-2003). Entre los restos arqueológicos documentados destacan las estructuras de época emiral identificadas como parte del denominado arrabal de Saqunda, en cuya descripción y análisis nos centraremos