Environmental degradation related to mining, urbanization and pollutant sources: Poços de Caldas, Brazil

  • Lázaro V. Zuquette
  • Osni J. Pejon
  • Marcilene Dantas-Ferreira
  • Janaina B. Palma
Original Paper

Abstract

The paper considers the environmental problems associated with development within a volcanic depression at Poços de Caldas, Brazil, which was undertaken without appropriate investigation and planning. Engineering geological mapping was carried out to characterize the area and identify the main environmental problems. The results allowed the division of the region into geological and geotechnical zones. Decommissioned and abandoned mines, agricultural uses, point and non-point pollutant sources and urban land use were identified as the main causes of erosion, siltation, soil and surface water pollution and changes in geomorphology, infiltration rates, groundwater recharge conditions, groundwater pollution, runoff and channel density.

Keywords

Land degradation Pollutant sources Mining Urbanization Poços de Caldas Brazil 

Résumé

L’article présente les problèmes environnementaux accompagnant un développement engagé sans les travaux de recherche et de planification appropriés, dans une dépression d’origine volcanique à Poços de Caldas (Brésil). Une cartographie de géologie de l’ingénieur a été réalisée sur cette région afin d’identifier les principaux problèmes environnementaux. Ce travail a permis la partition de la région en unités géologiques et géotechniques. Des mines fermées et abandonnées, des pratiques agricoles, des sources ponctuelles ou non de polluants et des aménagements urbains ont été identifiés comme les principales causes d’érosion, de sédimentation, de pollution des sols et des eaux de surface, de modifications de caractéristiques géomorphologiques, de taux d’infiltration des eaux, de conditions de recharge des nappes, de pollution des eaux souterraines, du ruissellement et de la densité de drainage des sols.

Mots clés

Dégradation des sols Sources de pollution Industrie minière Urbanisation Poços de Caldas Brésil 

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Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  • Lázaro V. Zuquette
    • 1
  • Osni J. Pejon
    • 1
  • Marcilene Dantas-Ferreira
    • 1
  • Janaina B. Palma
    • 1
  1. 1.Departamento de GeotecniaEscola de Engenharia de São CarlosSão CarlosBrazil

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