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Potential sources for arc magmas include subducted midocean ridge basalt and sediment, subarc mantle peridotite, and overlying crust. Geochemical data for arc rocks in general, including those forContinue Reading
Abstract Lavas from several major bathymetric highs in the eastern Indian Ocean that are likely to have formed as Early to Middle Cretaceous manifestations of the Kerguelen hotspot are predominantlyContinue Reading
  • Rosemary Hickey -Vargas, Hugo Moreno Roa, Leopolde Lopez Escobar, Frederick A. Frey
  • Geology
  • 1989 (First Publication: 1 November 1989)
  • At 39.5° S in the southern volcanic zone of the Andes three Pleistocene-recent stratovolcanoes, Villarrica, Quetrupillan and Lanin, form a trend perpendicular to the strike of the Andes, 275 to 325Continue Reading