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During Expedition 317, three sites were drilled on the continental shelf (84–122 m water depth) and one site was drilled on the upper slope (344 m water depth) (Fig. F1) from November 2009 to January 2010 using the D/V JOIDES Resolution. The expedition recovered Eocene to Holocene sediment with particular focus on the sequence stratigraphy of the Miocene to Holocene, when sea level change was dominated by glacioeustasy (see the “Site U1352” chapter [Expedition 317 Scientists, 2011]). Core recovery at the upper slope Site U1352 was excellent and reached nearly 100% at penetration depths shallower than 550 m core depth below seafloor (CSF-A). We picked tests of benthic foraminiferal species Nonionella flemingi from this interval and measured oxygen and stable carbon isotope values.

Oxygen isotope ratios of benthic foraminifers provide an excellent global record of glacial–interglacial cycles, especially since the Pliocene (e.g., LR04 δ18O stack of Lisiecki and Raymo, 2005). We constructed an age model for Hole U1352B by correlating between the LR04 δ18O stack and our δ18O measurements.