Publicação
Imaging the crustal structure of the Azores islands
| Resumo: | The Azores archipelago (Portugal), in the Central Atlantic Ocean, is located in a tectonic triple junction, between the American, Eurasia and African plates, whose morphologic expression is the Azores Plateau. Geodetic measurements indicate spreading rates of 23 mm/year for the Mid-Atlantic Ridge (MAR) and 2.1 mm/year for the Azorean segment (Terceira Ridge). The Azores plateau is considered as the surface expression of the interaction between the Azores hotspot and the MAR, and presents significant tectonic and volcanic activity. The existence of an anomalously thick crust associated with excesso magmatism, related with the Hotspot, has long been established for the Plateau, however the detailed characterization on its crustal structure, and its variability within the plateau is not yet fully performed. |
|---|---|
| Autores principais: | Dias, Nuno |
| Outros Autores: | Veludo, Idalina |
| Assunto: | Azores plateau Hotspot Tectonic and volcanic activity |
| Ano: | 2018 |
| País: | Portugal |
| Tipo de documento: | documento de conferência |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Instituto Politécnico de Lisboa |
| Idioma: | inglês |
| Origem: | Repositório Científico do Instituto Politécnico de Lisboa |
| Resumo: | The Azores archipelago (Portugal), in the Central Atlantic Ocean, is located in a tectonic triple junction, between the American, Eurasia and African plates, whose morphologic expression is the Azores Plateau. Geodetic measurements indicate spreading rates of 23 mm/year for the Mid-Atlantic Ridge (MAR) and 2.1 mm/year for the Azorean segment (Terceira Ridge). The Azores plateau is considered as the surface expression of the interaction between the Azores hotspot and the MAR, and presents significant tectonic and volcanic activity. The existence of an anomalously thick crust associated with excesso magmatism, related with the Hotspot, has long been established for the Plateau, however the detailed characterization on its crustal structure, and its variability within the plateau is not yet fully performed. |
|---|