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doi:10.2204/iodp.proc.319.202.2013

Introduction

During Integrated Ocean Drilling Program (IODP) Expedition 319, three sites (C0009, C0010, and C0011) were drilled offshore Kii Peninsula, located in the Kumano Basin; the top of the slope; and near the Nankai Trench, respectively, to achieve several scientific objectives using both riser and riserless drilling (see the “Expedition 319 summary” chapter [Expedition 319 Scientists, 2010a]). Among these, Site C0009 (Fig. F1) was the first attempt to retrieve cuttings samples as primary materials for research in scientific deep-sea drilling history. In this study, calcareous nannofossil assemblages were investigated based on the counting method, and the biostratigraphy was established to provide an age model for Hole C0009A.