EL ANÁLISIS DOCUMENTAL Y EL LEVANTAMIENTO COMO METODOLOGÍA DE INVESTIGACIÓN EN ARQUITECTURAS DESAPARECIDAS: EL FUERTE DE SAN FELIPE Y EL MUELLE DE LA RIZA EN LA DESEMBOCADURA DEL GUADALQUIVIR.

From the analysis of writings and maps of the era of commercial trade with America, we have detected the existence of two completely unknown structures submerged at the mouth of the Guadalquivir River, the Bastion of San Felipe and the Dock of "La Riza ". By using Photographic Rectification as a survey method, we offer a research methodology which unifies the processes of documental analysis and those related to architectural surveys. As a result of this study, both structures are located and are plotted on maps of the river mouth on which we also show the position of the former navigation channel and a restitution of the map of Sanlúcar de Barrameda in the 18th century. We give several hypotheses about the use and the typology of both elements, as well as their impact on the morphological evolution of the coast. [ABSTRACT FROM AUTHOR]