The intrusion of the Plasencia (Messejana) dike as part of the Circum-Atlantic Early Jurassic magmatism: Tectonic implications in the southwestern Iberian peninsula
The Plasencia dike belongs to a vast Early Jurassic magmatic province that extends around the Central Atlantic. The origin of this magmatic event is related to a thermal anomaly at the base of the lithosphere, and its age has been fixed within a short time span around 200 Ma. In close relationship w...
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 1999 |
| 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:10272/9977 |
| Acceso en línea: | http://hdl.handle.net/10272/9977 |
| Access Level: | acceso abierto |
| Palabra clave: | Early Jurassic magmatism SW Iberian Peninsula Plasencia (Messejana) dike Magmatic underplating |
| Sumario: | The Plasencia dike belongs to a vast Early Jurassic magmatic province that extends around the Central Atlantic. The origin of this magmatic event is related to a thermal anomaly at the base of the lithosphere, and its age has been fixed within a short time span around 200 Ma. In close relationship with this thermal anomaly a process of underplating of the lower crust has been proposed. Assuming the existence of this underplated lower crust, some tectonic features can be explained in the SW Iberian Peninsula such as the nature of the crust, the pattern of Bouguer anomalies and the extension of the area of low relief |
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