Caracterización geoquímica de la esméctica en varias formaciones arcillosas de los flyschs del Campo de Gibraltar (Cádiz, España)

M. D. Ruiz Cruz; M. Esteras Martín

doi:10.3989/egeol.93495-6356

Caracterización geoquímica de la esméctica en varias formaciones arcillosas de los flyschs del Campo de Gibraltar (Cádiz, España)

Authors

M. D. Ruiz Cruz Departamento de Química Inorgánica, Cristalografía y Mineralogía. Facultad de Ciencias
M. Esteras Martín SECEG

DOI:

https://doi.org/10.3989/egeol.93495-6356

Keywords:

Aljibe basal series, blocky clays, Campo de Gibraltar flyschs, Jimena clays, kaolinite, illite, smectite, trace elemento

Abstract

The «Jimena clays», «basal series of Aljibe» and «blocky clays» formations are compared from the mineralogical and geochemical analysis. The mineralogy of clays is very similar in all the sequences analyzed and consists of quartz, smectite, illite and kaolinite. Smaller amounts of feldspar, gypsum and chlorite are locally presento In the 2-20 μm and < 2 μm size-fractions smectite is the most abundant mineral. The mineralogical similarity is also manifested on the chemical composition of these materials. Smectite compositions correspond to montmorillonite suggesting, along the trace element content that these smectites are weathearing products of acidic magmatic and sedimentary rocks. The homogeneity of the analyzed sequences indicates an homology in these formations and a great uniformity in the supplies during the Cretaceous-Eocene times.

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Published

1993-12-30

How to Cite

Ruiz Cruz, M. D., & Esteras Martín, M. (1993). Caracterización geoquímica de la esméctica en varias formaciones arcillosas de los flyschs del Campo de Gibraltar (Cádiz, España). Estudios Geológicos, 49(5-6), 287–294. https://doi.org/10.3989/egeol.93495-6356

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Issue

Vol. 49 No. 5-6 (1993)

Section

Articles

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