Grain-Size Statistics and Description of Sediment R package G2Sd version 2.2 Full descriptive statistics, physical description of sediment, metric or phi sieves. Includes a Shiny web application for interactive grain size analysis and visualization. Software Depends: R (>= 4.1.0) Imports: ggplot2, dplyr, tidyr, tibble, viridis, patchwork, scales,shiny, bslib, shinyWidgets, plotly Regis K. Gallon <regis.gallon@lecnam.net> Comprehensive R Archive Network (CRAN) Regis K. Gallon [aut, cre] (CNAM-Intechmer), Jerome Fournier [aut] (CNRS|MNHN) GPL-3 2025-11-11 application/tgz https://CRAN.R-project.org/package=G2Sd doi:10.32614/CRAN.package.G2Sd