Reference

Xavier Devleeschouwer, J.G. Casier, Estelle Petitclerc, A. Préat (2011): Drowning of a carbonate platform at the Givetian/Frasnian boundary (Sourd d’Ave section, Belgium): a comparison of different proxies (magnetic susceptibility, microfacies and gamma-ray spectrometry). – Berichte des Institutes für Geologie und Paläontologie der Karl-Franzens-Universität Graz – 16: 36 - 38.