2 Artículos

Modification of the Continental Crust by Subduction Zone Magmatism and Vice-Versa: Across-Strike Geochemical Variations of Silicic Lavas from Individual Eruptive Centers in the Andean Central Volcanic Zone

Acceso

en línea

Gary S. Michelfelder, Todd C. Feeley, Alicia D. Wilder and Erik W. Klemetti

To better understand the origin of across-strike K2O enrichments in silicic volcanic rocks from the Andean Central Volcanic Zone, we compare geochemical data for Quaternary volcanic rocks erupted from three well-characterized composite volcanoes situated... ver más

Revista: Geosciences Formato: Electrónico

Tabla de contenido: Vol: 3 Num: 0 Par: 4 Año: 2013

Geochronology (40Ar/39Ar, K-Ar and He-exposure ages) of Cenozoic magmatic rocks from Northern Chile (18-22°S): implications for magmatism and tectonic evolutionof the central Andes

Acceso

en línea

Gerhard Wörner,Konrad Hammerschmidt,Friedhelm Henjes-Kunst,Judith Lezaun,Hans Wilke Pág. 205 - 240

K-Ar and Ar/Ar ages from magmatic rocks of northern Chile (18-22°S) describe duration and extent of the Tertiary and Quaternary magmatic evolution and date major tectonic events in northernmost Chile. This paper summarizes new K-Ar and Ar-Ar mineral and ... ver más

Revista: Andean Geology Formato: Electrónico

Tabla de contenido: Vol: 27 Num: 2 Par: 0 Año: 2000

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