Marine Source Unmixing Toolkit R package OceanTracer version 1.0.2 Reconstructs the provenance of particulate matter and marine sediments by 'unmixing' isotopic and elemental signatures. Provides a specialized toolkit for marine biogeochemistry, coastal tracing, and oceanographic sediment transport following the step-by-step procedure described in Cepeda 'et' 'al.' (2026) <doi:10.1002/lom3.70083>, which is tested using artificial mixtures. Software Depends: R (>= 4.1.0) Imports: ggplot2, klaR, GGally, plotly, gridExtra, Ternary, MASS, dplyr, magrittr, tidyr, crayon, reshape2, tidyselect, stats, utils, scales, cluster, ggbiplot, MixSIAR Esther Cepeda <cepeda.esther@hotmail.com> Comprehensive R Archive Network (CRAN) Esther Cepeda [aut, cre], Maarten Wynants [aut], Ivan Lizaga [aut, ths, ldr], Samuel Bodé [ctb], Pascal Boeckx [ctb], Jan Vanaverbeke [ctb], Ulrike Braeckman [ctb], Margarita Villalonga [ctb], Aiming Liang [ctb], Borja Latorre [ctb], Leticia Gaspar [ctb], Ana Navas [ctb], Vince Q Vu [ctb] GPL (>= 2) 2026-10-15 application/tgz https://CRAN.R-project.org/package=OceanTracer doi:10.32614/CRAN.package.OceanTracer