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Radiocarbon Dating Historical Mortars: Lime Lumps and/or Binder Carbonate?

Radiocarbon, ISSN: 0033-8222, Vol: 60, Issue: 3, Page: 875-893
2018
  • 24
    Citations
  • 0
    Usage
  • 13
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    24
    • Citation Indexes
      24
  • Captures
    13

Article Description

Lime lumps and bulk mortars show different C contamination when analyzed in several CO2 fractions isolated from the effervescence of an ongoing hydrolysis reaction. Age profiles of both materials are therefore highly complementary and together they can provide a reliable date. Furthermore, they can also reveal the complexity of the radiocarbon (C) distribution within the mortar and thus prevent over-interpretation of the data. The lime lump versus bulk mortar dating data presented here has been collected over 22 years, with only a small fraction of the results so far published internationally. Since there has been an increasing interest in mortar dating over recent years with a special focus on lime lumps, and since many laboratories have just begun mortar dating experiments, we wish to present some of the extensive data that already exist. Previously published data from 15 lime lumps (including 34 C measurements from sequential dissolution) and 43 new C measurements from 17 lime lumps are presented here. The samples are from medieval Finland and Sweden, classical Rome and medieval Italy, and the Roman Jerash (Gerasa), Jordan.

Bibliographic Details

Alf Lindroos; Pia Sonck-Koota; Åsa Ringbom; Pia Sjöberg; Jan Heinemeier; Greg Hodgins; Lynne Lancaster; Riikka Kaisti; Fiona Brock; Heikki Ranta; Marta Caroselli; Stefano Lugli

Cambridge University Press (CUP)

Arts and Humanities; Earth and Planetary Sciences

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