RT Journal Article T1 An urban geomonumental route focusing on the petrological and decay features of traditional building stones used in Madrid, Spain A1 Pérez-Monserrat, Elena Mercedes A1 Álvarez de Buergo, Mónica A1 Gómez Heras, Miguel A1 Varas Muriel, María Josefa A1 Fort González, Rafael AB The stone traditionally used to build cities contributes to their personality and attests to the geological substrate on which they stand. While stone decay in the built heritage can be attributed to a number of causes, anthropic activity has a particularly significant impact. The geomonumental routes project is one of the initiatives proposed in recent years for urban routes that convey geological fundamentals by observing the rocks present in heritage structures. Its innovative approach addresses traditional stone properties, original quarrying sites and mechanisms of decay. Madrid's Royal Palace is a fine example of the use of traditional building stone in the centre of the Iberian Peninsula. In the geomonumental route proposed, the building doubles as an in situ laboratory that affords an overview of the main petrological properties of the two traditional stones most commonly used in the city's built heritage, the forms of decay they are subject and the factors underlying such alterations. This route constitutes a tool for showing the main petrological features and decay forms in traditional building stones found in urban heritage façades, with a special focus on anthropic impact, primarily air pollution and the use of conservation treatments that time has proven to be unsuitable. © 2013 Springer-Verlag Berlin Heidelberg. PB Springer SN ISSN: 1866-6280, online ISSN: 1866-6299 YR 2013 FD 2013 LK https://hdl.handle.net/20.500.14352/42832 UL https://hdl.handle.net/20.500.14352/42832 LA eng NO “This is a pre-print of an article published in Environmental Earth Science. The final authenticated version is available online at: https://doi.org/10.1007/s12665-012-2164-3”. NO Ministerio de Economía y Competitividad (MINECO) NO Comunidad de Madrid NO Universidad Complutense de Madrid DS Docta Complutense RD 7 abr 2025