Sial (disambiguation)Topics referred to by the same term / From Wikipedia, the free encyclopedia Sial refers to the composition of the upper layer of the Earth's crust. Look up sial in Wiktionary, the free dictionary. Sial may also refer to:
Sial refers to the composition of the upper layer of the Earth's crust. Look up sial in Wiktionary, the free dictionary. Sial may also refer to: