Radiocarbon dating mortar: The identification of a Medieval Irish round tower using a multi-method inter-comparative approach

Barrett, Gerard Thomas; Donnelly, Colm; Reimer, Paula J.

doi:10.1016/j.jasrep.2020.102538

Cited by 2 publications

(4 citation statements)

References 44 publications

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“…4). Examples are X-ray diffraction (XRD) (Ponce-Anton et al 2018), optical microscopy (Pesce et al 2009), stable isotopes (Pachiaudi et al 1986;Van Strydonck et al 1986;Ambers 1987), thermogravimetric analysis or differential scanning calorimetry (TGA/DSC) (Ponce-Anton et al 2018;Michalska 2019), Fourier-transform infrared spectrometer (FTIR) (Chu et al 2008;Poduska et al 2012), leach rates (Lindroos et al 2007;Michalska and Czernik 2015), inductively coupled plasma mass spectrometry or inductively coupled plasma optical emission spectrometry (ICP-MS/OES) (Al-Bashaireh 2016; Barrett et al (2020a). Sample from Lumen Christi, Northern Ireland, UK.…”

Section: Characterization Methodsmentioning

confidence: 99%

“…The cryo-breaking method aims to improve the mechanical separation of binder material compared with conventional crushing of samples (Marzaioli et al 2011;Michalska et al 2017). Some studies use cryo-breaking and report accurate results (Marzaioli et al 2011;Michalska et al 2017;Barrett et al 2020a).…”

Section: Preparation Methodsmentioning

confidence: 99%

“…Using petrography, Nonni et al (2018) identified secondary calcite attributed to groundwater in buried mortar from the Temple of Minerva Medica, Rome, and found contamination of old material in the radiocarbon results. Meanwhile, some studies with above ground sampling do not report groundwater issues (Heinemeier et al 2010;Pesce et al 2012;Barrett et al 2020a).…”

Section: Strategymentioning

confidence: 99%

“…Powder with a grainsize of 212-425 μm. Spectrum originally published inBarrett et al (2020a). Sample from Lumen Christi, Northern Ireland, UK.…”

mentioning

confidence: 99%

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A field guide to mortar sampling for radiocarbon dating*

et al. 2021

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Section: Characterization Methodsmentioning

confidence: 99%

Section: Preparation Methodsmentioning

confidence: 99%

Section: Strategymentioning

confidence: 99%

“…Powder with a grainsize of 212-425 μm. Spectrum originally published inBarrett et al (2020a). Sample from Lumen Christi, Northern Ireland, UK.…”

mentioning

confidence: 99%

See 2 more Smart Citations

A field guide to mortar sampling for radiocarbon dating*

et al. 2021

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Radiocarbon Mortar Dating Intercomparison Modis2—approach From the Zagreb Radiocarbon Laboratory, Croatia

Sironić,

Cherkinsky,

Štrukil

et al. 2024

Radiocarbon

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The Second International Mortar Dating Intercomparison Study (MODIS2) took place in 2020. Three mortar samples from different sites and chronologies were distributed among various research groups in form of bulk mortar and grain fraction smaller than 150 µm. This is the first time the Zagreb Radiocarbon Laboratory, with support of the Center of Applied Isotope Studies, University of Georgia, took part in the international mortar intercomparison. The initial approach of the Laboratory to mortar dating was to separate 32–63 µm grain fraction and collect three CO2 gas portions by sequential dissolution with acid. After checking the 14C date trends of the gas portions, which should be ascending with later fractions, the one for the first and shortest gas portion was reported as the age of the mortar. However, the first gas portion might not be true age of the mortar, since it still might contain some “dead” carbon. Therefore, data extrapolation from the first two initial CO2 portions was also conducted on the results, but not reported to the intercomparison. Though in general, all the intercomparison reported dates fit the expected historical ages, for one sample, the extrapolated result showed a better match to the historical data.

show abstract

Radiocarbon dating mortar: The identification of a Medieval Irish round tower using a multi-method inter-comparative approach

Cited by 2 publications

References 44 publications

A field guide to mortar sampling for radiocarbon dating*

A field guide to mortar sampling for radiocarbon dating*

Radiocarbon Mortar Dating Intercomparison Modis2—approach From the Zagreb Radiocarbon Laboratory, Croatia

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