Stratigraphic Data Processing and Section Plots R package avstrat version 0.1.1 Data processing and generating stratigraphic sections for volcanic deposits and tephrastratigraphy. Package was developed for studies on Alaska volcanoes ("av") where stratigraphic ("strat") figures are needed for interpreting eruptive histories, but the methods are applicable to any sediment stratigraphy project. Plotting styles inspired by "SedLog" (Zervas et al. 2009) <doi:10.1016/j.cageo.2009.02.009> but with more customizable outputs and flexible data input based on best practice recommendations for the tephra community (Wallace et al. 2022) <doi:10.1038/s41597-022-01515-y>. Software Depends: R (>= 4.1.0) Imports: dplyr, tidyr, ggplot2 (>= 4.0), grid, patchwork, rlang, shiny, leaflet Suggests: knitr, readxl, rmarkdown, testthat (>= 3.0.0), tibble, withr Matthew Loewen <mloewen@usgs.gov> Comprehensive R Archive Network (CRAN) Matthew Loewen [aut, cre] (ORCID: <https://orcid.org/0000-0002-5621-285X>) CC0 2026-02-04 application/tgz https://CRAN.R-project.org/package=avstrat doi:10.32614/CRAN.package.avstrat