Fig. 5: Stratigraphic log of the chosen sections and GSD diagrams.
From: Trigger mechanism and propagation dynamics of pyroclastic density currents at basaltic volcanoes

a Image showing representative stratigraphic log of the analyzed sections. b GSD diagrams for selected sections in each FS. The Unit A for FS1 has been selected from another section because it is not fully exposed. c The diagram reports the Md (φ) vs σ (φ) variations for all analyzed samples. d Frequency of reddish and gray clasts vs scoriaceous and juvenile particles.