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Edad de los domos sálicos de la isla de La Gomera

Cubas, C.R. and Ancochea Soto, Eumenio and Hernán, F. and Huertas Coronel, María José and Brandle, J.L. (2002) Edad de los domos sálicos de la isla de La Gomera. Geogaceta (32). pp. 71-74. ISSN 0213-683X

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Abstract

The new radiometric data from felsic domes on La Gomera allow to separate two different felsic both
intrusive and extrusive episodes on the island. The early one, upper Miocene in age, includes the domes
on the eastern sector of the island as well as the radial and the conical dikes cropping out on the north.
Within this early episode of felsic magmatism, the domes on the eastern sector and the so called eastern
radial dike-swarm seem to be contemporaneous and slightly older (8.6-7.9 Ma) than the western radialdike
swarm and the con e-sheet complex, a structure which also includes some related domes (7.5-6.4
Ma). A later felsic episode, lower Pliocene in age (4.5-3.9 Ma),includes all the rest of existent domes on La
Gomera which are less alkaline and peralkaline than the older ones.

Item Type:Article
Uncontrolled Keywords:Domes, Felsic dykes, Radial dyke-swarm, Cone sheet complex, La Gomera, Canary Islands, K/Ar ages
Subjects:Sciences > Geology > Petrology
ID Code:9938
Deposited On:04 Feb 2010 11:07
Last Modified:01 Mar 2010 11:53

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