[S-CG55] Oceanic plate as inputs to subduction zone and the subduction initiation

[SCG55-P03] Tectonic settings and eruption ages of petit-spot on incoming NW Pacific plate

*Naoto Hirano¹, Kazuto Mikuni², Hirochika Sumino³ (1. Center for Northeast Asian Studies, Tohoku University, 2. Department of Earth and Planetary Sciences, Institute of Science Tokyo, 3. Research Center for Advanced Science and Technology, The University of Tokyo)

Keywords:petit-spot, Pacific plate, alkali-basalt