Exhumación alpina del bloque morfotectónico Pedriza - La Cabrera (Sierra del Guadarrama, Sistema Central Español):: potencialidad de la termocronometría por trazas de fisión en apatitos.

• Autores: Ignacio Sell, G. Poupeau, César Casquet Martín, Carmen Galindo Francisco, José Manuel González Casado
• Localización: Geogaceta, ISSN 0213-683X, Nº. 18, 1995, págs. 23-27
• Idioma: español
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• Resumen

  • The principles of Apatite Fission Track Analysis (AFTA), which allows to decipher the time-temperature paths of apatites since their last cooling below about 110°C are given and one example, from a Pedriza - La Cabrera block, is discussed. It is suggested from AFTA that the cooling history of this sample followed three steps: from 45 Ma to 35 Ma, slow cooling at a rate of 2,5 - 5° C/Ma between 110° C and 60° C, followed by a quasi-plateau at 70-80°C up to about 70 Ma ago, where a new cooling episode started, with a mean 6 -7 ° C/Ma cooling rate up to the present time