Figure 5. Seafloor geology of the eastern Manus Basin. Edifices of the Eastern Manus volcanic zone, which extends between the active ends of the Djaul and Weitin transform faults, range from picritic basalt to rhyodacite in composition. Filled circles denote known hydrothermal sites, including the three main active sites of PACMANUS, DESMOS, and Susu Knolls. Gray lines indicate extensional fault scarps.