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Table 3 The fiftieth percentile of the grain-size distribution of tube, intertube, beach and disaggregated bioconstruction sands are shown

From: The sedimentary dynamics of Sabellaria alveolata bioconstructions (Ostia, Tyrrhenian Sea, central Italy)

Sand sourceGrain size
Tube and/or intertubeAbout 200 μm (D50 tube = D50 intertube)
Beach sub-environmentBetween 311 μm and 499 μm
Disaggregated bioconstruction fragmentsBetween 241 μm and 332 μm