Updated Bouguer anomalies of the Iberian Peninsula: a new perspective to interpret the regional geology

Concepción Ayala, Fernando Bohoyo, Adolfo Maestro, María Isabel Reguera, Montserrat Torne, Félix Rubio, Manel Fernàndez and José Luís García-Lobón

Journal of Maps, 2016, vol. 12, issue 5, 1089-1092

Abstract: Bouguer anomaly maps are powerful cartographic tools used mainly by geoscientists and natural resources' companies (oil, mining, etc.) since they reflect rock density distribution at different depths, allowing the identification of different tectonic features. At upper crustal levels, Bouguer anomaly maps can help, for instance, in characterizing possible ore deposits, ground water reservoirs, petroleum resources, CO2 storage sites and sedimentary basins; at deeper crustal levels they can help to further refine seismic velocity models or other integrated geophysical models and thus help in deciphering the lateral density variations within the crust and the geometry of the base of the crust. This new Bouguer anomaly map at a 1:1,500,000 scale is based on the compilation of 210,283 gravity stations covering the Iberian Peninsula (c. 583,254 km2). The new map upgrades previous maps in two ways: (1) it is built up from a database with a 15% more spatial coverage than previous compilations and (2) it is freely available. This map show shorter wavelengths than previous published maps thus allowing investigation of smaller geological features.

Date: 2016
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DOI: 10.1080/17445647.2015.1126538

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