Mineralogía del perfil de «La Muela», terciario del sector central de la Depresion del Ebro (provincia Zaragoza)

M. P. Mata; A. Pérez; F. López-Aguayo

doi:10.3989/egeol.88443-4532

Mineralogía del perfil de «La Muela», terciario del sector central de la Depresion del Ebro (provincia Zaragoza)

Authors

M. P. Mata Departamento Ciencias de la Tierra. Universidad de Zaragoza
A. Pérez Departamento Ciencias de la Tierra. Universidad de Zaragoza
F. López-Aguayo Departamento Ciencias de la Tierra. Universidad de Zaragoza

DOI:

https://doi.org/10.3989/egeol.88443-4532

Keywords:

Tertiary Ebro Basin, clay minerals, carbonates, lacustrine sedimentation

Abstract

The stratigraphic sequenre of «La Muela>., at the South (Central Sector) of the Ebro basin, is studied. This profile presents two difIerentiated uoits. The first one gypsum-bearing and the second one carbonatic, which correspond to the gypsum of Zaragoza and Alcubierre Cormations respectively. 80th units present a different mineralogical assofiation. The first one is characterized by gypsum, carbonates (calcite/dolomite), clay minerals and quartz, whereas in the second one the association is carbonates (calcite and/or dolomite), clay minerals and quartz. The clay minerals systematically present are: illite, smectites, chlorite and kaolinite. However, it is possible to observe an important quantitative change between both units, with a variation in the average of smectites from 23% to 46%. The variation in the molar content of MgCO₃ in the carbonates has loo to propase a model of the chemical evolution on the vertical, in agreement with the sedimentologic analysis of the materials, which correspond to playa and lacustrine deposits.

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Published

1988-08-30

How to Cite

Mata, M. P., Pérez, A., & López-Aguayo, F. (1988). Mineralogía del perfil de «La Muela», terciario del sector central de la Depresion del Ebro (provincia Zaragoza). Estudios Geológicos, 44(3-4), 135–143. https://doi.org/10.3989/egeol.88443-4532

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Issue

Vol. 44 No. 3-4 (1988)

Section

Articles

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