Edad de los diques sálicos del Norte de la isla de La Gomera.
- Brandle Matesanz, José Luis
- Cubas, C. R.
- Huertas Coronel, María José
- Hernán Reguera, Francisco
- Ancochea Soto, Eumenio
ISSN: 0213-683X
Year of publication: 2001
Issue: 30
Pages: 179-181
Type: Article
More publications in: Geogaceta
Abstract
Several trachytic and phonolitic, radial and conical dyke-swarms crop out on the La Gomera northern region. The first age data obtained situate the intrusion episodes coinciding in time with the extrusion of the Old Basalts. The earlier dykes show a radial pattern, centred in Tamargada. They have been dated in 8.0 Ma and 7.9 Ma. The conical swarm centred farther west, in Vallehermoso, has a slightly more recent age, between 7.5 Ma and 6.4 Ma. A third dyke-swarm is spatially associated with the conical structure and has likely a similar age