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doi:10.2204/iodp.proc.333.203.2014 Data report: grain size distribution of the late Cenozoic hemipelagic mud from Site C00111Yu Saitoh2AbstractWe performed grain size analyses of late Cenozoic hemipelagic mud samples from Holes C0011C and C0011D recovered during Integrated Ocean Drilling Program Expedition 333 (December 2010–January 2011). Hemipelagic mud grains are coarsest in the uppermost 94 m interval; the median diameter is ~7.2 ϕ, although frequency distributions in the interval from 42 to 94 meters below seafloor (mbsf) are exceptionally broadened and flattened relative to the other horizons. Grain size fines downhole with fluctuations in the interval between 94 and 165 mbsf, where median grain size diameter fines downcore from 7 to 8 ϕ. Hemipelagic mud grains are finest in the interval from 165 to 380 mbsf. In this interval, median grain size diameter is consistently ~8 ϕ, although coarsening excursions are present between 214 and 254 mbsf and between 351 and 363 mbsf. |
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