Analisis Estructural e Isotopos de Plomo

Jorge Luis Quispe Cangana

Analisis Estructural e Isotopos de Plomo
Format
Paperback
Publisher
Editorial Academica Espanola
Country
United States
Published
22 August 2012
Pages
136
ISBN
9783659024832

Analisis Estructural e Isotopos de Plomo

Jorge Luis Quispe Cangana

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La franja Huaytara-Tantara con depositos de Au-Ag tipo baja sulfuracion se extiende a lo largo del flanco oeste de la Cordillera Occidental de los Andes del Peru central. Contiene mineralizaciones Au-Ag (Pb-Zn-Cu) hospedadas en secuencias volcanicas del Eoceno al Mioceno. Los resultados del analisis estructural definen al menos seis fases de deformacion, donde cuatro de ellas han originado estilos de fracturacion favorables para la circulacion de fluidos mineralizantes en areas de los depositos de Au-Ag de Pampa Andino, Antapite y Jatun Orcco. Dichas fases de deformacion son compresional CNS (30 Ma-27 Ma), extensional ENE-SW (27 Ma-26 Ma), transcurrente TCE-W (26 Ma-19 Ma) y transcurrente TCNE-SW (19 Ma-11 Ma). Los resultados de las relaciones isotopicas 206Pb/204Pb, 207Pb/204Pb y 208Pb/204Pb de las menas auriferas, rocas encajantes e intrusivos de los depositos de Au-Ag en mencion; definen sistemas hidrotermales independientes. Antapite registra fluidos con fuente tanto de corteza inferior, como superior, relacionada con Batolito de la Costa y mayores posibilidades de mineralizacion economica de Au-Ag.

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