Skip to Main Content
GEOREF RECORD

Correlation between crystallochemical parameters of phyllosilicates and mineral facies in very low-grade metasediments of the Betic Cordilleras, Spain; a synthesis

M. D. Ruiz Cruz and P. Rodriguez Jimenez
Correlation between crystallochemical parameters of phyllosilicates and mineral facies in very low-grade metasediments of the Betic Cordilleras, Spain; a synthesis
Clay Minerals (March 2002) 37 (1): 169-185

Abstract

Clay mineral evolution in diagenetic and very low-grade metamorphic sedimentary rocks from the Malaguide Complex was studied using the following parameters: illite and chlorite crystallinity, b cell dimension of illite, chemistry of chlorite, and the occurrence and distribution of the following phyllosilicates: I-S mixed-layer minerals, kaolin polytypes, chlorite-bearing mixedlayer minerals (tosudite and mica-chlorite interstratifications), vermiculite-like minerals, paragonite and biotite. The distribution of IC values permits the subdivision of the study area into three zones: diagenetic, anchizone and epizone. On the contrary, the distribution of CC values cannot be used in the study of the metamorphic zonation. The mineralogy and b dimension of illite indicate that the Malaguide samples display a low to low-medium pressure metamorphism, also characterized by steep temperature gradients. The correlation between IC data and distribution of other significant minerals has permitted the establishment of a zonation within the chlorite zone, which is confirmed by the appearance of some index minerals, such as paragonite, biotite, chloritoid and andalusite.


ISSN: 0009-8558
EISSN: 1471-8030
Coden: CLMIAF
Serial Title: Clay Minerals
Serial Volume: 37
Serial Issue: 1
Title: Correlation between crystallochemical parameters of phyllosilicates and mineral facies in very low-grade metasediments of the Betic Cordilleras, Spain; a synthesis
Affiliation: Universidad de Malaga, Departamento de Quimica Inorganica, Malaga, Spain
Pages: 169-185
Published: 200203
Text Language: English
Publisher: Mineralogical Society, London, United Kingdom
References: 39
Accession Number: 2002-064429
Categories: Sedimentary petrology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. geol. sketch maps
N36°00'00" - N38°45'00", W05°34'60" - E00°15'00"
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 200220
Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal