Sm-Nd dating of fluorite from the San Eusebio F-Ba (Pb-Zn) mine (Sierra de Guadarrama, Spain)
Autor: | Galindo, Carmen, Darbyshire, D. P., Tornos, Fernando, Casquet Martín, César |
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Jazyk: | Spanish; Castilian |
Rok vydání: | 1992 |
Předmět: | |
Zdroj: | Arias Montano. Repositorio Institucional de la Universidad de Huelva instname |
Popis: | S m -N d d a tin g o f F-Ba (Pb-Zn) veins enclosed in a d a m e llite s o f the Spanish C e n tra l System suggests an age of 152± 25 M.a. (Late Jurassic) for this hydrothermal stage. This age supports an unconformity-related origin for this style of mineralization and excludes any genetic relationship with a magmatic-related hydrothermal activity related to the enclosing granites. It is consistent with K-Ar and Rb-Sr dating of other hydrothermal events in the Sierra de Guadarrama and strengthens the hypothesis that the late and pos thercynian hydrothermal activity covers a long span of time |
Databáze: | OpenAIRE |
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