Mahlburg Kay, S. Basalt to High-Mg Andesite Chemistry as a Guide to tha Mantle and the Significance of a Seismic gap in the Southern Argentine Puna of the Central Andes.Geol.Soc. EOS. Relevamiento: 1990. Subjects--Topical Terms: Andesitas Subjects--Geographic Terms: Andes Centrales Index Terms--Genre/Form: ArtÃculo