The 600 yr eruptive history of Villarrica Volcano (Chile) revealed by annually laminated lake sediments by Van Daele, M, Moernaut, J, Silversmit, G, Schmidt, S, Fontijn, K, Heirman, K, Vandoorne, W, De Clercq, M, Van Acker, J, Wolff, C, Pino, M, Urrutia, R, Roberts, S, Vincze, L, De Batist, M