Implicaciones paleoambientales deducidas del estudio geoquímico del transito mioceno-plioceno en la Cuenca de Sorbas (Almería)

A. Sánchez Bellón; P. Moral Cardona; Ch. Mosser; C. Roquin; E. Sebastián Pardo

doi:10.3989/egeol.95513-4291

Implicaciones paleoambientales deducidas del estudio geoquímico del transito mioceno-plioceno en la Cuenca de Sorbas (Almería)

Authors

A. Sánchez Bellón Departamento de Cristalografía y Mineralogía de la Universidad de Cádiz
P. Moral Cardona Departamento de Cristalografía y Mineralogía de la Universidad de Cádiz
Ch. Mosser Centre de Géoehimie de la Surfaee CNRS
C. Roquin Centre de Géoehimie de la Surfaee CNRS
E. Sebastián Pardo Departamento de Mineralogía y Petrología de la Universidad de Granada.

DOI:

https://doi.org/10.3989/egeol.95513-4291

Keywords:

Geochemistry, multivariant analysis, clay mineralogy, parent rocks, paleoenvironmental conditions, Miocene-Pliocene, Sorbas Basin, Betic Cordilleras

Abstract

The geochemistry of the < 2 µm fractions of the Mio-Pliocene sediments and the bulk sample of the surrounding metamorphic rocks was studied in arder to characterize the geochemical environment during the sedimentation and to trace the influence of the surrounding rocks on the sediments. After making the relationships among the chemical elements and the minerals or the rocks by Principal Component Analysis (PCA), it has been carried out a Hierarchical Ascending Classification (HAC) which regroups the samples with similar geochemical characteristics into 8 classes. Graphical comparison of mean geochemical composition among HAC groups provides a better identification of inherited similarities between sorne sediments and the metapellitic rocks in the eastern Betic Cordilleras. Gneises, carbonated and metabasic rocks influence is inexistent or very located. Finally B and MgO contents have allowed us to distinguish different types of deposit environments with a higher or lower degree of confinement and with influence of sea-ar continental waters.

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Published

1995-08-30

How to Cite

Sánchez Bellón, A., Moral Cardona, P., Mosser, C., Roquin, C., & Sebastián Pardo, E. (1995). Implicaciones paleoambientales deducidas del estudio geoquímico del transito mioceno-plioceno en la Cuenca de Sorbas (Almería). Estudios Geológicos, 51(3-4), 129–140. https://doi.org/10.3989/egeol.95513-4291

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Issue

Vol. 51 No. 3-4 (1995)

Section

Articles

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