Research Article

Geospatial Statistics Elucidate Competing Geological Controls on Natural CO2 Seeps in Italy

Figure 1

Schematic map of Italy showing the location of regional geological structures and Quaternary (Q) volcanoes (adapted from [25, 26]), CO2 seeps [10] (where filled symbols indicate multiple seeps), Moho depth contours [27], and mapped normal fault scarps after [28]. Filled symbols show multiple seeps. Location of Italy shown on the globe inset. (b) Crustal cross-section of the Central Apennines modified from [17, 29, 30]. While earthquakes (EQ) and CO2 delivery occur across the section, circles indicate the main, simplified occurrences. (c) Proportion of CO2 seep types classified qualitatively according to surface expression.