Lorenzo Lancellotti (a,b), Roberto Greco (c) & Eleonora Paris (b)
(a) Liceo Scientifico Augusto Righi, Bologna, Italy.
(b) UNICAMearth group, School of Science and Technology, University of Camerino, Italy.
(c) Instiuto de Geociências, Unicamp, Rua João Pandia Calogeras, n. 51, CEP 13083-870, Campinas, Brasil.
Corresponding author e-mail: lorenzo.lancellotti@gmail.com