Ashgill crinozoan–bryozoan carbonates in the Carnic Alps: comparison with modern New Zealand shelf carbonates

• William B.N. Berry ^[1]
  1. [1] University of California System

     University of California System

     Estados Unidos

     
• Localización: Serie correlación geológica, ISSN-e 1666-9479, ISSN 1514-4186, Vol. 17, Nº. 1, 2003
• Idioma: inglés
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• Resumen

  • In their discussion of the Ashgill Cystoid Limestone Formation in northeastern Spain, Vennin and others (1998, p. 121) pointed out that "shallow water carbonates of Ashgill age were deposited throughout northern Gondwana" just prior to glaciation. They suggested that these limestones were "of temperate origin." Nelson (1988) and Nelson and others (1988) described occurrences of carbonates accumulating today in temperate waters in a symposium volume dedicated to discussions of modern and ancient temperate water carbonates. The Wolayer carbonate facies in the Carnic Alps (Figure 1), an area that lay close to 50 degrees south latitude in the Late Ordovician (Schönlaub, 1992), bears certain similarities to both modern shelf carbonates and to the Spanish Cystoid Limestone described by Vennin and others (1998).