Reconfiguración de la línea de costa en un sector de explotación salinera de época romana en el NO de España
- R. Tallón-Armada
- M. Costa-Casais
- T. Taboada
- A. Martínez Cortizas
ISSN: 1576-5172
Ano de publicación: 2013
Título do exemplar: VII Jornadas de Geomorfología Litoral
Número: 14
Páxinas: 211-214
Tipo: Artigo
Outras publicacións en: Geotemas (Madrid)
Resumo
We present a palaeoenvironmental reconstruction of a sector of Ría de Vigo (Spain). We characterized a pedo-sedimentary sequence infilling a former Roman salt mine. Physicochemical, mineralogical, and geochemical (elemental composition) analyses were performed and complemented with radiocarbon age dating of selected samples. The sequence presents an alternation of sandy and silty-clay layers with large physico-chemical differences. The results indicate a progressive advance of continental environment as a consequence of the reconfiguration of the coastline from BC II to AD III centuries, when salt mine activity ceased. The coast sector evolved from a highly anthropized marsh environment towards a more continentalized one, dominated by dune formations. At the same time, changes in the sedimentation coincide with some major late Holocene climatic changes.