Evolución estructural de la zona de cizalla extensional de Berzosa-Riaza, sector de Somosierra, Sistema Central Español.

• Hernaiz Huerta, P.P. ^[3] ; Escuder Viruete, J. ^[3] ; Rodríguez Fernández, L.R. ^[1] ; Valverde Vaquero, P. ^[2] ; Dunning, G. ^[2]
  1. [1] Instituto Geológico y Minero de España

     Instituto Geológico y Minero de España

     Madrid, España

     
  2. [2] Memorial University of Newfoundland

     Memorial University of Newfoundland

     Canadá

     
  3. [3] Inypsa, España

  Mostrar afiliaciones +
• Localización: Geogaceta, ISSN 0213-683X, Nº. 20, 4, 1996 (Ejemplar dedicado a: Comunicaciones presentadas en el IV Congreso Nacional de Geología, Alcalá de Henares, 1996), págs. 875-878
• Idioma: español
• Títulos paralelos:
  • Structural evolution of the Berzosa-Riaza extensional shear zone, Somosierra sector, Spanish Central System
• Enlaces
  • Texto completo (pdf)
• Resumen

  • In this paper, a new structural analysis of the Somosierra sector of the Spanish Central System is presented. Two main tectonothermal events are recorded: D1 is compressional and related to the variscan collision that produces northeast-eastward thrusting and associated folding; D2 has an extensionnal character and produces, as the main feature, the development of a kilometric-scale ductile shear zone and a series of associated low grade detachments where D1 structures are overprinted and trasposed at all scales. The final structural pattern is completed by a set of late westward facing minor D3 structures that did not significantly modified the previous geometry.