Basic Geological Mapping in Faja Pirítica and surrounding areas at scale 1: 25.000

The project ‘Geological Investigations and Basic Cartography in Faja Pirítica y Areas Aoundaña’ (ICFP), which was carried out by the Mining Service with the collaboration of the Spanish Mining Geological Institute, was carried out between 1997 and 1999 and is a deepening of the previous work carried out in this area by both bodies. The winning companies were a temporary Union of companies, INFAPIR, consisting of INIMA, INGEMISA and EPTISA, and CGS. This project includes the update of the basic geological mapping published by IGME as part of the MAGNA programme (National Geological Map at 1: 50.000 level), supported by detailed research carried out by mining companies and by public institutions such as IGME. The project includes basic geological mapping at scale 1: 50.000, comprising the entire study area and a more detailed mapping at scale 1: 25.000 of the areas of special mining interest. The baseline mapping ensures continuity between the different sheets. Each sheet contains, in turn, a series of thematic layers which may constitute a single layer of information by having lateral continuity. Together with the map, we enclose a memory of each of the sheets making up the project, describing the geological information contained in the geological maps, including a description of the geological, stratigraphic, petrology, tectonic, geology and techtosedimentary evolution of the area concerned, together with a bibliography used for the drafting of that report. Information resulting from geological investigations, included in an annexed database, is collected in part. Geological research data consists of the results of a series of studies (absolute ages, clays, palaeontology, micropalaeontology, carbonates petrology, citrus rock petrology, metamorphic rocks petrology, therrygen petrology, alterations and geochemistry) carried out on samples collected during the field campaigns carried out during the project. In addition to the above, there is general information on the project, not associated with the analysis of any specific sample. These are data on mining signs, gravimetric profiles, hydrology, reservoirs, stratigraphic columns and descriptive information of the project.