Bascun˜an, Sophi´a; Kelm, Ursula; Sanhueza, Vilma; Alfaro, Guillermo
(The Clay Minerals SocietyThe Clay Minerals Society, 2007)
Tuffs of the Tertiary Colbu´n Formation near Quinama´vida in central so uthern Chile have been mapped and their mineralogy analyzed. The pyroclastic rocks present a maximum outcropping thickness of 120 m and are dominated ...
