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Âge K/Ar et contrôle structural de mise en place des veines épithermales à Au-Ag de la Cordillera Shila, Sud Pérou.

Abstract : The Au-Ag epithermal mineralization of the Shila Cordillera is dated at about 10.7 Ma (K/Ar on adularia). The vein system is characterized by the association of a major east-west vein and N120-135°E secondary fractures. The strike-slip faults controlling the veins indicate an initial NE-SW to ENE-WSW shortening direction, which is compatible with that generally accepted for this period. These structures were reopened during a second phase and channelized mineralizing fluids, the circulation of which may have began at the end of stage 1.
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Daniel Cassard, Alain Chauvet, Laurent Bailly, Fernando Llosa, Juan Rosas, et al.. Âge K/Ar et contrôle structural de mise en place des veines épithermales à Au-Ag de la Cordillera Shila, Sud Pérou.. Comptes rendus de l’Académie des sciences. Série IIa, Sciences de la terre et des planètes, Elsevier, 2000, 330, pp.23-30. ⟨10.1016/S1251-8050(00)00118-X⟩. ⟨hal-00093019⟩

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