Fábricas diagenéticas asociadas al paleokarst del techo de la Unidad Intermedia del Mioceno de la cuenca de Madrid

J. C. Cañaveras; M. Hoyos; S. Ordóñez; J. P. Calvo

doi:10.3989/egeol.97535-6226

Fábricas diagenéticas asociadas al paleokarst del techo de la Unidad Intermedia del Mioceno de la cuenca de Madrid

Authors

J. C. Cañaveras Departamento de Geología. Museo Nacional de Ciencias Naturales. CSIC. Madrid. Departamento de Ciencias de la Tierra y del Medio Ambiente. Facultad de Ciencias. Universidad de Alicante.
M. Hoyos Departamento de Geología. Museo Nacional de Ciencias Naturales. CSIC. Madrid
S. Ordóñez Departamento de Ciencias de la Tierra y del Medio Ambiente. Facultad de Ciencias. Universidad de Alicante
J. P. Calvo Departamento de Petrología y Geoquímica. Facultad de Ciencias Geológicas. Universidad Complutense de Madrid

DOI:

https://doi.org/10.3989/egeol.97535-6226

Keywords:

Dedolomitization, calcitization, meteoric diagenesis, paleokarst, Miocene, Madrid Basin

Abstract

Carbonates and evaporites from the top of the Miocene Intermediate Unit of the Madrid Basin have set as host-rock for early karstification phenomena. The development of these karstic processes imply an important change in the depositional evolution of the basin. In these materials, complex diagenetic fabrics formed as a result of shallow meteoric diagenetic processes have been recognized, being dedolomitization and calcitization of gypsums the main diagenetic processes that affected the top of the Miocene Intermediate Unit. The high variability of diagenetic fabrics is thought to be mainly influenced by the original composition of sediments, the activity of microorganisms and the chemistry of diagenetic waters.

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Published

1997-12-30

How to Cite

Cañaveras, J. C., Hoyos, M., Ordóñez, S., & Calvo, J. P. (1997). Fábricas diagenéticas asociadas al paleokarst del techo de la Unidad Intermedia del Mioceno de la cuenca de Madrid. Estudios Geológicos, 53(5-6), 197–210. https://doi.org/10.3989/egeol.97535-6226

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Issue

Vol. 53 No. 5-6 (1997)

Section

Articles

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