Figure F2. Compilation of 40Ar/39Ar, K/Ar, and U-Pb zircon dating results for Eocene igneous rocks from the IBM fore arc, modified after Ishizuka et al. (2011). Expedition 352 focuses on the detailed stratigraphy of the 7–8 My period between subduction initiation and the start of “normal” arc volcanism. Data sources: Meijer et al. (1982), Cosca et al. (1998), Reagan et al. (2008), Kaneoka et al. (1970), Ishizuka et al. (2006), Ishizuka et al. (2011), and Reagan et al. (2013).
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