Evolution of fluid sources during the neogene exhumation of the Sierra Almagrera (Betics, Spain)

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URI: http://hdl.handle.net/10481/35729
ISSN: 1885-7264
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Auteur
Dyja, Vanessa; Carrillo Rosúa, Francisco Javier; Morales Ruano, Salvador; Tarantola, Alexandre; Hibsch, Christian
Editorial
Sociedad Española de Mineralogía
Materia
Inclusiones fluidas
 
Cordillera bética
 
Mineralizaciones
 
Fluidos metamórficos
 
Falla transalboran
 
Mineralisations
 
Metamorphic brines
 
Betic Cordillera
 
Trans-alboran fault
 
Fluid inclusions
 
Date
2014-07
Referencia bibliográfica
Dyja, V.; Carrillo-Rosúa, J.; Morales-Ruano, S.; Tarantola, A.; Hibsch, C. Evolution of fluid sources during the neogene exhumation of the Sierra Almagrera (Betics, Spain). Macla, 19: (2014). [http://hdl.handle.net/10481/35729]
Patrocinador
Departamento de Mineralogía y Petrología (Universidad de Granada); GeoRessources, Université de Lorraine, CNRS, CREGU, UMR 7359, Vandœuvre-lès-Nancy, F-54506 (France); Departamento de Didáctica de las Ciencias Experimentales (Universidad de Granada); Instituto Andaluz de Ciencias de la Tierra (CSIC-UGR); This work has been supported by the Ministry of the higher education and research and CNRS ST-INSU-CT5 program.
Résumé
In the Sierra Almagrera, the N-S striking Palomares fault separated an uplifted block to the East (Booth-Rea et al., 2004) where Fe-Ba-Pb-Cu-Zn-(Ag) mineralizations led to the development of a mining district. To the West, the basement is buried below Neogene sediments locally presenting silicification and stratabound ore deposits Fe-Ba-Pb-(Ag) (Morales-Ruano, 1994). The question related to the orographic evolution of the wedge is addressed in this work: Did basinal and meteoric fluids from the sierras have circulated within the crust and interacted with deeper crustal fluids related to the metamorphism, volcanism and hydrothermal events? Answers are given by the study of fluid inclusions (FI) trapped within several vein generations of different minerals such as quartz, siderite barite and calcite, related to different stages of exhumation. Fluids are identified by microthermometry, Raman spectroscopy and halogens characterization.
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