title: Sierra de Gorbea
text: # Sierra de Gorbea
  
  25°44′S 68°45′W﻿ / ﻿25.733°S 68.750°W﻿ / -25.733; -68.750Sierra de Gorbea is a large lava field in the Chilean Andes that has been dated 4.7±0.5 Ma and 5.2±0.5 Ma by potassium argon dating. The lavas are dacitic to basaltic andesite with rhyolitic inclusions and no vent is evident.
  
  