The calciclastic members of the Eocene Anotz Formation (Navarre, W Pyrenees): example of resedimentation processes in carbonate ramp slopes
The four calciclastic members of the Lower-Middle Eocene Anotz Formation in the western Pyrenees, considered by some previous authors of shallow-marine origin because of their large size, massive appearance and abundant content of shallow-water fossils, are here re-interpreted as deep-marine, resedi...
| Autores: | , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2003 |
| País: | España |
| Institución: | Universidad de Huelva (UHU) |
| Repositorio: | Arias Montano. Repositorio Institucional de la Universidad de Huelva |
| Idioma: | inglés |
| OAI Identifier: | oai:ariasmontano.uhu.es:10272/9089 |
| Acceso en línea: | http://hdl.handle.net/10272/9089 |
| Access Level: | acceso abierto |
| Palabra clave: | Carbonate ramp slope Calciturbidite Eocene Pyrenees Talud de rampa carbonatada Calciturbidita Eoceno Pirineos |
| Sumario: | The four calciclastic members of the Lower-Middle Eocene Anotz Formation in the western Pyrenees, considered by some previous authors of shallow-marine origin because of their large size, massive appearance and abundant content of shallow-water fossils, are here re-interpreted as deep-marine, resedimented deposits. Eight different calciclastic facies have been recognized, all formed by sediment gravity flows derived from an adjacent shallow-water ramp to the west, showing that high-energy marine currents swept the shallow ramp and shed loose grains as sustained sediment gravity flow off to the ramp slopes. This example shows the need of careful petrosedimentological analyses to correctly address the depositional setting of calciclastic accumulations |
|---|