Ages and geochemistry of Mesozoic-Eocene back-arc volcanic rocks in the Aysén region of the Patagonian Andes, Chile

Ages and geochemistry of Mesozoic-Eocene back-arc volcanic rocks in the Aysén region of the Patagonian Andes, Chile

Eighteen new radiometric ages (fourteen 40Ar-39Ar, four K-Ar), combined with previously published ages, confirm the existence of three main extensional back-arc volcanic events, previously defined by stratigraphic relationships, in Chilean Patagonia (Aysén region). These three events developed durin...

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Autores principales: Parada,Miguel A., Lahsen,Alfredo, Palacios,Carlos
Lenguaje:English
Publicado: Servicio Nacional de Geología y Minería (SERNAGEOMIN) 2001
Materias:
Back-arc volcanism
40Ar-39Ar ages
Magma source
Crustal extension
Chilean Patagonia
Acceso en línea:http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-02082001000100002
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