Mantle Processes and Sources of Neogene Slab Window Magmas from Southern Patagonia, Argentina

• Published in: Journal of Petrology
• Main Authors: GORRING, MATTHEW L., KAY, SUZANNE M.
• Format: Text
• Language: English
• Published: Oxford University Press 2001
• Subjects: ARTICLES; Antarctic; Antarctic Peninsula; Argentina; Austral; Baja; Chile Trench; Patagonia; Antarc*; Ocean Island
• Online Access: http://petrology.oxfordjournals.org/cgi/content/short/42/6/1067; https://doi.org/10.1093/petrology/42.6.1067

Neogene plateau lavas in Patagonia, southern Argentina, east of the volcanic gap between the Southern and Austral Volcanic Zones at 46·5° and 49·5°S are linked with asthenospheric slab window processes associated with the collision of a Chile Ridge segment with the Chile Trench at 12 Ma. The strong...