Neasham Fen is a small in-filled kettle hole. Analysis of the deposits at the site has provided an important record of the vegetational history and changing climate of the area during the Flandrian period. Radiocarbon dates of between 9082±90 and 1213±60 yr BP have been obtained from the deposits, which have also yielded pollen records covering the same period.
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^Turner, Judith (September 1979). "The environment of northeast England during Roman times as shown by pollen analysis". Journal of Archaeological Science. 6 (3): 285–290. Bibcode:1979JArSc...6..285T. doi:10.1016/0305-4403(79)90006-2.