This work reexamines emplacement mechanisms of the first exposed volcanic deposits of Etna through a multiscale approach, in order to rediscuss their significance in the framework of the eastern Sicily volcanism. Results demonstrate that Etnean roots were derived from a hyaloclastite-forming effusive eruptive event, with dyke intrusion that caused peperite generation in both seafloor and hyaloclastite beds. Similarities in str...