Formación de sepiolita-paligorskita en litofacies lutítico-carbonáticas en el sector de Borox-Esquivias (cuenca de Madrid)

J. L. Martín de Vidales; M. Poro; J. A. Medina; S. Leguey

doi:10.3989/egeol.88441-2520

Formación de sepiolita-paligorskita en litofacies lutítico-carbonáticas en el sector de Borox-Esquivias (cuenca de Madrid)

Authors

J. L. Martín de Vidales Departamento de Química Agrícola, Geología y Geoquímica. Facultad de Ciencias. Universidad Autónoma de Madrid
M. Poro Departamento de Química Agrícola, Geología y Geoquímica. Facultad de Ciencias. Universidad Autónoma de Madrid
J. A. Medina Departamento de Química Agrícola, Geología y Geoquímica. Facultad de Ciencias. Universidad Autónoma de Madrid
S. Leguey Departamento de Química Agrícola, Geología y Geoquímica. Facultad de Ciencias. Universidad Autónoma de Madrid

DOI:

https://doi.org/10.3989/egeol.88441-2520

Keywords:

Madnd basin, Paleosoils, Smectite, Kerolite-stevensite, Sepiolite, Palygorskite, Microfabric

Abstract

According to lithological composition three units were stablished in the area studied: a) Clayey unit. Green and pinkish clays with sandy beds and early formation of calcretes. Clay minerals association: smectite-mixed-layers (kerolite-stevensite) sepiolite-illite-kaolinite. b) Clayey calcareous unit Green clays with calcretes and a sandy level at bottom of the unit. Clay minerals association: smectite-illite-palygorskite-sepiolite-kaolinite. c) Clayey-dolomitic unit. Green clays with dolomicrites. Clay minerals association: smectiteillite-palygorskite-sepiolite. Results let us to stablish a sepiolite and palygorskite genesis related to lacustrine paludine environments where pedodiagenetic processes (v.s. carbonation, dolomitization, silicification, vertic features) were responsible of smectite instability, with development of palygorskite or sepiolite, according to their respectively di or triocthedral character.

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Published

1988-04-30

How to Cite

Martín de Vidales, J. L., Poro, M., Medina, J. A., & Leguey, S. (1988). Formación de sepiolita-paligorskita en litofacies lutítico-carbonáticas en el sector de Borox-Esquivias (cuenca de Madrid). Estudios Geológicos, 44(1-2), 7–18. https://doi.org/10.3989/egeol.88441-2520

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Issue

Vol. 44 No. 1-2 (1988)

Section

Articles

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