"Piedras Geodes" y nódulos silúricos en el Aparato para la Historia Natural española (1754) de José Torrubia

• Gutiérrez-Marco, J.C. ^[2] ; Rábano, l. ^[3] ; Bombín Espino, M. ^[1] ; García Palacios, A. ^[2] ; Herranz Araújo, P. ^[2]
  1. [1] Universidad de Salamanca

     Universidad de Salamanca

     Salamanca, España

     
  2. [2] Instituto de Geología Económica

     Instituto de Geología Económica

     Madrid, España

     
  3. [3] Museo Geominero, España

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• Localización: Geogaceta, ISSN 0213-683X, Nº. 21, 1996 (Ejemplar dedicado a: 21a Sesión Científica, Huelva 1996), págs. 135-137
• Idioma: español
• Títulos paralelos:
  • "Geode-stones" and Silurian nodules in the classic Torrubia´s ''Aparato para la Historia Natural española" (1754)
• Enlaces
  • Texto completo (pdf)
• Resumen

  • Torrubia (1754) was the first to describe the presence of nodules in the Silurian black shales cropping out in the old tile works near El Pobo de Dueñas in the province of Guadalajara. He called them "geode-stones" reminiscent to "litle cakes and diceboxes", considering them as petrefacts of nonorganic origin. The presence of nodules in Silurian graptolite facies in several Iberian localities is also briefly examined, and the diverse popular interpretations of these structures in the country are also annotated (i.e., "moorish heads", mammut-coprolites, tutles, or even "coprolithus neanderthalensis").