| Título: | Subantarctic macrotidal flats, cheniers and beaches in SanSebastian Bay, Tierra Del Fuego, Argentina |
| Autores: | Vilas Martín, Federico ; Arche, Alfredo |
| Tipo de documento: | texto impreso |
| Editorial: | Elsevier Science B.V., 1999 |
| Dimensiones: | application/pdf |
| Nota general: | info:eu-repo/semantics/openAccess |
| Idiomas: | |
| Palabras clave: | Estado = Publicado , Materia = Ciencias: Geología: Geología estratigráfica , Tipo = Artículo |
| Resumen: |
San Sebastian Bay is a large, semicircular coastal embayment situated on the Atlantic coast of Tierra del Fuego, Argentina. It is a high-energy, subantarctic environment with a tidal range of 10.4 m, influenced by large waves of Atlantic and local origin and swept by constant, strong westerly winds. A 17 km long gravel spit protects the Northern part of the Bay giving rise to a gradient in sedimentary processes. From south to north, are seven distinct sedimentary environments. Coastal sedimentation started at least 5200 years before present BP. and a rapid progradation related to a relative sea-level drop has infilled about 6 kilometres of the Bay with a sedimentary sequence 10–11 m thick. 14-C dating of unabraded shells in the Chenier ridges of the relict part of the complex allows for a precise reconstruction of the stages of the progradation, that has slowed from 2.35 mryear at 5000 years BP to 0.6 mryear at present. The possible causes of the sea-level drop are discussed. |
| En línea: | https://eprints.ucm.es/id/eprint/17627/1/1-s9000213.pdf |
Ejemplares
| Estado |
|---|
| ningún ejemplar |
