These basalts represent the earliest response to subduction initiation in the Izu-Bonin arc system during the early Eocene. They are highly refractory and formed by high degrees of partial melting of a previously depleted source.

2020-07-27 UPDATE: Hafnium [mg/kg] was recalculated and updatedMajor elements normalized to 100% anhydrous.

Supplement to: Shervais, John W; Reagan, Mark; Haugen, Emily; Almeev, Renat; Pearce, Julian; Prytulak, Julie; Ryan, Jeffrey G; Whattam, Scott Andrew; Godard, Marguerite; Chapman, Timothy; Li, Hongyan; Kurz, Walter; Nelson, Wendy R; Heaton, Daniel; Kirchenbaur, Maria; Shimizu, Kenji; Sakuyama, Tetsuya; Li, Yibing; Vetter, Scott K (2018): Magmatic Response to Subduction Initiation, Part I: Forearc basalts of the Izu-Bonin Arc from IODP Expedition 352. Geochemistry, Geophysics, Geosystems, 19