Pleistocene intraplate magmatism in the Goto Islands, SW Japan: Implications for mantle source evolution and regional geodynamics

• We report geochemical compositions of the youngest intraplate vocanics in NW Kyushu. • The regional lithosphere evolved from extension to compression since mid-Miocene. • The volcanism evolved from mid Miocene low-K tholeiite to Pleistocene alkali basalt. • Young asthenosphere-born magmas show hyb...
Ausführliche Beschreibung

• We report geochemical compositions of the youngest intraplate vocanics in NW Kyushu. • The regional lithosphere evolved from extension to compression since mid-Miocene. • The volcanism evolved from mid Miocene low-K tholeiite to Pleistocene alkali basalt. • Young asthenosphere-born magmas show hybrids of depleted and enriched mantle type 1. • This composition is believed to present throughout East and SE Asian asthenosphere. Ausführliche Beschreibung