Mesozoic-Cenozoic volcanism and geodynamic events in the Central and Eastern Arctic

摘要

The patterns and history of Mesozoic-Cenozoic plume magmatism in the Arctic is considered in relation with suprasubduction volcanism and geodynamic events. The Mesozoic-Cenozoic magmatic history of the area includes seven stages, distinguished by correlation of ages and compositions of volcanics associated with mid-ocean rifting, plumes, and subduction; three of seven stages correspond to global events at 230-200 Ma, 130-120 Ma, and 40-30 Ma. The reported study supports the inferred inverse correlation between plate velocities and amount of subduction-related volcanism. The gained knowledge is used for paleotectonic reconstructions in the Arctic.