Edades 39Ar/40Ar de los depósitos de Roques de García (Las Cañadas, Tenerife)
- Arnaud, N.
- Huertas Coronel, María José
- Cantagrel, J. M.
- Ancochea Soto, Eumenio
- Fúster Casas, José María
ISSN: 0213-683X
Année de publication: 2000
Número: 29
Pages: 19-22
Type: Article
D'autres publications dans: Geogaceta
Résumé
During the evolution of the Las Cañadas volcanic edifice, debris avalanches were very significant destructive events. The Roques de Garcia unit was generated by such an event. 39Ar/40Ar dating has been carried out on different rock types related to this deposit. 1.70-1.40 Ma ages were measured on volcanic matérial involved in the avalanche deposit, 0.43 Ma on a phonolitic dyke cutting this formation. These results bracket the age of the debris avalanche emplacement which could mark either the transition between Cañadas ll-Cañadas III (1.4-1.1 Ma) or Cañadas Illa-Cañadas lllb (0.6-0.7 Ma) volcanic phases