1. Allaby A, Allaby M (1990) The concise Oxford dictionary of earth sciences. Oxford University Press, Oxford
2. Almeida FFM (1971) Geochronological division of the Precambrian of South America. Rev Bras Geoc 1(1):13–21
3. Ashurst J, Dimes FG (1998) Conservation of building and decorative stone. Elsevier, Amsterdam
4. Börner K, Hill D (2010) Große Enzyklopädie der Steine: Die Naturstein-Datenbank. CD-ROM. Abraxas Verlag GmbH
5. Bossi J (1965) Geología del Uruguay. Universidad de la República, Montevideo