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



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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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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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