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dc.contributor.authorHeinemeier, Jan
dc.contributor.authorRingbom, Åsa
dc.contributor.authorLindroos, Alf
dc.contributor.authorSveinbjörnsdóttir, Árný E.
dc.date.accessioned2021-02-11T20:59:47Z
dc.date.available2021-02-11T20:59:47Z
dc.date.issued2010-01-01
dc.identifier.citationHeinemeier, J., Ringbom, Å., Lindroos, A., & Sveinbjörnsdóttir, Á. E. (2010). Successful AMS 14C dating of non-hydraulic lime mortars from the medieval churches of the Åland Islands, Finland. Radiocarbon, 52(1), 171-204.
dc.identifier.issn0033-8222
dc.identifier.doi10.1017/S0033822200045124
dc.identifier.urihttp://hdl.handle.net/10150/654018
dc.description.abstractFifteen years of research on accelerator mass spectrometry (AMS) radiocarbon dating of non-hydraulic mortar has now led to the establishment of a chronology for the medieval stone churches of the land Islands (Finland), where no contemporary written records could shed light on the first building phases. In contrast to other material for dating, well-preserved mortar is abundantly available from every building stage. We have gathered experience from AMS dating of 150 land mortar samples. Approximately half of them have age control from dendrochronology or from 14C analysis of wooden fragments in direct contact with the mortar. Of the samples with age control, 95% of the results agree with the age of the wood. The age control from dendrochronology, petrologic microscopy, chemical testing of the mortars, and mathematical modeling of their behavior during dissolution in acid have helped us to define criteria of reliability to interpret the 14C results when mortar dating is the only possibility to constrain the buildings in time. With these criteria, 80% of all samples reached conclusive results, and we have thus far been able to establish the chronology of 12 out of the 14 churches and chapels, while 2 still require complementary analyses.
dc.language.isoen
dc.publisherDepartment of Geosciences, The University of Arizona
dc.relation.urlhttp://radiocarbon.webhost.uits.arizona.edu/
dc.rightsCopyright © by the Arizona Board of Regents on behalf of the University of Arizona. All rights reserved.
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.titleSuccessful AMS 14C Dating of Non-Hydraulic Lime Mortars from the Medieval Churches of the Åland Islands, Finland
dc.typeArticle
dc.typetext
dc.identifier.journalRadiocarbon
dc.description.collectioninformationThe Radiocarbon archives are made available by Radiocarbon and the University of Arizona Libraries. Contact lbry-journals@email.arizona.edu for further information.
dc.eprint.versionFinal published version
dc.description.admin-noteMigrated from OJS platform February 2021
dc.source.volume52
dc.source.issue1
dc.source.beginpage171
dc.source.endpage204
refterms.dateFOA2021-02-11T20:59:47Z


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