The use of geographic information systems to identify priority areas for recovery and mineral exploitation on the north coast of São Paulo


The North Coast of São Paulo is one of the major tourist centers of the State. The mining activity, especially of borrow materials (saibro), despite having left a negative legacy over the past 30 years, has always been the support for urban development, which enabled the growth of tourism in the region. This study aimed to identify and quantify the remnants of saibro mining, with environmental degradation and risk to local communities in order to classify these areas by their potential for mineral resources exploitation. Geographic Information Systems (GIS) were applied to generate a Digital Elevation Model (DEM) from a Triangular Irregular Network (TIN), obtaining the volume of those areas. Subsequently, this information was integrated with the degradation and risk data to reach the potential use of areas for mining. The achieved results show that 33% of 226 mapped areas have high potential for exploitation of mineral resources, being capable of sustaining the demand for low unit value supplies used in construction. The use can also bring environmental benefits as it is able to minimize natural hazards left by the abandoned mining fronts and restrict the expansion of mining areas.

GAMBA, Carlos Tadeu de Carvalho; CABRAL JUNIOR, Marsis; FERREIRA, Cláudio José. Uso de sistemas de informações geográficas na identificação de áreas prioritárias para recuperação e aproveitamento mineral no litoral norte de São Paulo. Revista Ra’e Ga – O Espaço Geográfico em Análise, v.39, p.128-145, abr., 2017.

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