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The Geological Map of Brecha Algarvia covers a large area in the Algarve region, between São Bráz de Alportel and Tavira. Realized at a scale of 1:5000, it highlights the Cerro da Cabeça Formation (Kimeridgian) as the lithostratigraphic unit which produces the variety of ornamental limestone known as “Brecha Algarvia” or “Brecha de Tavira”. Along with the performance of core drillings, it supported the delimitation of areas of best suitability for the exploration and safeguarding of this mineral resource and the calculation of the availability of resources.