The Phlegrean Fields volcanological evolution

A volcanological map merging continental and marine areas of the Phlegrean Fields and Procida Island (Southern Italy) is presented at the 1:25,000 scale. The map is based on 1:5,000 field mapping and marine geology survey carried out during the Italian CAR.G (Geological CARtography, Servizio Geologico d’Italia) project, and on bathymetric and seismic data. Geological data are represented on a digital terrain model of the volcano. This allows better visualization of the main morphological, volcanic, and geological features. The legend is organized in seven activity phases identified based on updated absolute ages of eruptions defining periods of high volcanicity and stasis. Furthermore, based on geological and geophysical evidence, a reconstruction of the main caldera structural framework is proposed. The geological map highlights the evolutive history of the Phlegrean Fields volcanic field both in the marine and continental portions and the reconstructed structural framework and evolution of the caldera formed 39.3 Ky ago in its continental and submerged portions.