Mineralogía de los materiales terciarios del área de Tarazona Borja-Ablitas (depresión del Ebro)
DOI:
https://doi.org/10.3989/egeol.84403-4654Keywords:
Clay minerals, Tertiary, Ebro basin, Spain.Abstract
Several lithostratigraphic units of local interest, ranging in age from the Middle Vindobonian to the Pontian, occur in this area of the Ebro basin. The mineralogical study, and particularly the clay mineral interpretation, has led to characterize the different units and locate the source area (Paleozoic muscovite-rich materials of the Sierra del Moncayo). Muscovite was degraded to illite and Al-smectites, and a fluvial and lacustrine sedimentation ocurred under a semi-arid climate. Chemical sedimentation (carbonate, gypsum) was prevalent, and saponite, sepiolite and chert were also formed in this environment.
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