The nine volcanic islands of this Azores Archipelago (36.9В°NвЂ“39.8В°N, 24.9В°WвЂ“31.3В°W) straddle the triple junction associated with the NorthвЂђAmerican, Eurasian, and Nubian lithospheric dishes into the midвЂђNorth Atlantic Ocean (inset of Figure 1). Pico Island (447 kilometer 2 ) comes with an elongated form with a maximum length of 46 and 16 kilometer, correspondingly. It’s the youngest area regarding the Azores Archipelago (270 В± 150 ka; Demande et al., 1982 ) and it is consists of three volcanic systems: Topo volcano, Planalto da Achada fissure area and Pico volcano (Figure 1). Topo is definitely an extinct volcano situated in the southern the main area this is certainly profoundly eroded and included in more youthful lavas. Planalto da Achada fissure zone corresponds up to A wnwвЂђeseвЂђoriented ridge of scoria cones, в€ј30вЂђkm long, that forms the eastern area of the island.