Imprints of historical pollution and the 218-60 BCE tsunamigenic period in southwestern Spain
| Autor: | María Isabel Carretero, Juan Manuel Campos, María Luz González-Regalado, Guadalupe Monge, Verónica Romero, Joaquín Rodríguez-Vidal, Antonio Toscano, Manuel Pozo, Maria Isabel Prudêncio, Rosa Marques, Luis Miguel Cáceres, Francisco Ruiz, Manuel Abad, Javier Bermejo, Tatiana Izquierdo, Paula Gómez, Maria Isabel Dias, Josep Tosquella |
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| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Revista Mexicana de Ciencias Geológicas. 37:89-97 |
| ISSN: | 2007-2902 1026-8774 |
| Popis: | The Doñana National Park is a Biosphere Reserve located within the estuary of the Guadalquivir River (SW Spain). It is mainly composed of extensive fluvio-tidal marshes partially protected by an elongated sandy spit. Three phases have been distinguished in the late Holocene evolution of this spit based on textural, geochemical, palaeontological and, chronological data recorded in a long core (31 m). Phase 1 (890 BCE-218 BCE) is characterized by the alternation of lagoonal silty sediments and slightly polluted marsh deposits, the latter with contamination from thousand-year-old mining. Phase 2 (218 BCE-90 CE) is characterized by several historical tsunamis, which caused the erosion of previous dune systems and the deposit of these sandy sediments on the adjacent bottom of the lagoon. Phase 3 (90 CE-Present) includes a regressive sequence (lagoonal bottom-marsh-dune system), with the pollution of lagoonal sediments due to Roman mining activities. |
| Databáze: | OpenAIRE |
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