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doi:10.2204/iodp.proc.308.202.2007 IntroductionIntegrated Ocean Drilling Program (IODP) Expedition 308 Site U1322 is located on the Mississippi slope in the northern Gulf of Mexico, at a water depth of 1319 m. The deepest of three sites drilled in the Ursa Basin, Site U1322, was designed to recover a continuous sediment section for studying fluid migration and mass flow dynamics in the late Quaternary (Expedition 308 Scientists, 2005). Early work indicates that the modern foraminifer biofacies around Site U1322 is dominated by benthic Bulimina-Brizalina assemblages plus a Glomospira biofacies in an oxygen-poor environment induced by rapid sedimentation offshore from the Mississippi River mouth (Fig. F1) (Poag, 1981). We investigated planktonic and benthic foraminifers in samples from Hole U1322B. The primary objective of this study was to record the abundance and distribution patterns of foraminifers and to provide information for interpreting late Quaternary environmental changes in the Ursa Basin region. |
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