| Abstract: | This paper deals with fossiliferous shales and sandstones of Ordovician age from WesternLibya. Brachiopods indicate Caradocian and Ashgillian ages at least for part of the section. On ecological grounds it is possible to demonstrate the cold water character of faunal assemblages, related to a periglacial facies. Then this series is introduced on a broader scale into the Cambro-Ordovician of Libya. Good correlations are established between Libya, Morocco and South-Africa, thus offering, through faunal control alone, a striking view of the huge size of glacial phenomena during Upper-Ordovician. |
