Glossary:Hardpan
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[edit] Hardpan
A layer of hard subsoil or clay produced when precipitation of insoluble materials like silica, iron oxide, or calcium carbonate cements the particles together.
[edit] Source
Rapp, G. and Hill, C.L. (1998) Geoarchaeology: The earth-science approach to archaeological interpretation. New Haven: Yale University Press. ISBN: 0-300-07076-4
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