Artefacts are solid or liquid substances that are created or substantially modified by humans as part of an industrial or artisanal manufacturing process, or brought to the surface by human activity from a depth, where they were not influenced by surface processes, and deposited in an environment, where they do not commonly occur.
IUSS Working Group WRB (2022) World Reference Base for Soil Resources. International soil classification system for naming soils and creating legends for soil maps. 4th Editio. Vienna, Austria: International Union of Soil Sciences (IUSS). Available at: https://www.isric.org/explore/wrb.
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