English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/18785
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Citado 0 veces en Web of Knowledge®  |  Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Título

Metamorphic evolution of Triassic rocks from the transition zone between the Maláguide and Alpujárride complexes (Betic Cordilleras, Spain).

AutorRuiz Cruz, María Dolores; Sanz de Galdeano, Carlos; Lázaro, Concepción
Palabras claveParagonite
Illite
Sudoite
Phyrophyllite
Chlorite
X-ray diffraction
Maláguide complex
Low-grade metamorphism
Betic Cordilleras
Alpujárride complex
Electron microprobe analysis: X-ray fluorescence
Fecha de publicaciónene-2005
EditorSchweizerbart science publishers
CitaciónEuropean Journal of Mineralogy 17(1): 81-91 (2005)
ResumenA complete sequence of mineral assemblages ranging from late diagenesis to the epizone has been identified in Triassic rocks from "intermediate units" between the Alpujárride and the Maláguide complexes (Betic Cordillera, Spain). These units appear as a set of tectonic slices, the uppermost showing lithological characteristics similar to the Maláguide complex, which change as depth increases, towards lithologies typical of the Alpujárride complex. The study was carried out by X-ray diffraction, optical microscopy, electron microprobe and X-ray fluorescence. The mineralogical composition shows a clear vertical evolution: A dickite-bearing assemblage, characteristic of the upper slices is replaced by sudoite ± pyrophyllite-bearing assemblages, these by trioctahedral chlorite-rich assemblages, and finally by paragonite-bearing assemblages. Examination of bulk-rock chemistries indicates that most of the mineralogical changes are the result of the increasing metamorphic grade, with the exception of chloritoid; its growth does appear to be partly controlled by the rocks chemistry (it is Al2O3 dependent). The evolution of the metamorphic assemblages occurred prior to emplacement of the slices by thrusting and reveals a progressive transition in metamorphic grade between both complexes, although some discontinuities in the KI values between consecutive slices are observed.
Versión del editorhttp://dx.doi.org/10.1127/0935-1221/2005/0017-0081
URIhttp://hdl.handle.net/10261/18785
DOI10.1127/0935-1221/2005/0017-0081
ISSN0935-1221
Aparece en las colecciones: (IACT) Artículos
Ficheros en este ítem:
No hay ficheros asociados a este ítem.
Mostrar el registro completo
 



NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.