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Edades 39 Ar/40 Ar de los depósitos de Roques de García (Las Cañadas, Tenerife)

Arnaud, N. and Huertas Coronel, María José and Cantagrel, Jean Marie and Ancochea Soto, Eumenio and Fúster Casas, José María (2001) Edades 39 Ar/40 Ar de los depósitos de Roques de García (Las Cañadas, Tenerife). Geogaceta (29). pp. 19-22. ISSN 0213-683X

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Abstract

During the evolution of the Las Cañadas volcanic edifice, debris avalanches were very significant destructive
events. The Roques de Carcia unit was generated by such an evento 39Ar/40Ar dating has been carried
out on different rock types related to this deposito 1.70-1.40 Ma ages were measured on volcanic material
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 II-Cañadas III (1.4-1.1 Ma) or Cañadas IIIa-Cañadas IIIb (0.6-0.7 Ma) volcanic phases.


Item Type:Article
Uncontrolled Keywords:39Ar/40Ar chronology, Debris avalanches, Roques de García unit, Tenerife, Canary islands
Subjects:Sciences > Geology > Petrology
ID Code:9932
Deposited On:04 Feb 2010 11:42
Last Modified:01 Sep 2011 08:51

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