@article{705d192eac2848ef9ab4b9b4757da543,
title = "RADIOCARBON DATING of ST. GEORGE'S ROTUNDA in NITRIANSKA BLATNICA (SLOVAKIA): INTERNATIONAL CONSORTIUM RESULTS",
abstract = "An international consortium of radiocarbon (14C) laboratories was established to date the origin of the St. George's Rotunda in Nitrianska Blatnica (Slovakia), because its age was not well established in previous investigations. Altogether, 20 samples of wood, charcoal, mortar and plaster were analyzed. The 14C results obtained from the different laboratories as well as between the different sample types were in good agreement, resulting in a 14C calibrated age of 783-880 AD (94.2% probability) for the Rotunda. Although the 14C results have very good precision, the specific plateau-shape of the calibration curve in this period caused the wide range of the calibrated age. The probability distribution from OxCal calibration shows, however, that about 86% of the probability distribution lies in the period before 863 AD, implying that the Rotunda could have been constructed before the arrival of Constantine (St. Cyril) and St. Methodius to Great Moravia. The Rotunda thus probably represents the oldest standing purpose-built Christian church in the eastern part of Central Europe.",
keywords = "Nitrianska Blatnica, St. George's Rotunda, accelerator mass spectrometry, charcoal, mortar, plaster, radiocarbon dating, wood",
author = "Povinec, {Pavel P.} and Alexander Cherkinsky and Jozef Dorica and Irka Hajdas and Jull, {A. J.Timothy} and Ivan Kontu{\v I} and Mih{\'a}ly Moln{\'a}r and Ivo Svetlik and Wild, {Eva Maria}",
note = "Funding Information: Authors are grateful to Mr. M. Toman (mayor of Nitrianska Blatnica) and the Civic Association of the Rotunda Jurko for support and assistance during restoration works and collection of samples. Prof. A. Ruttkay is acknowledged for useful discussions. Colleagues in participating 14C laboratories are acknowledged for assistance during preparation and measurement of samples. Restoration works on the St. George s Rotunda carried out in 2009 2016 were partially financed by the Ministry of Culture of the Slovak Republic. The Bratislava group also acknowledges a support provided by the EU Research and Development Operational Program funded by the ERDF (projects No. 26240120012, 26240120026, and 26240220004), by the Advancing University Capacity and Competence in Research, Development, and Innovation (ACCORD) ITMS2014 (project no. 313021X329), by the International Atomic Energy Agency s Technical Cooperation Program (project No. SLR/1001, and by the Slovak Research and Development Agency (project No. APVV- 15 0576). The Debrecen group acknowledges support from the European Union and the State of Hungary, co-financed by the European Regional Development Fund in the project of GINOP-2.3.2 15 2016 00009 {"}ICER.{"} The Prague group acknowledges support provided by OP RDE, MEYS of the Czech Republic, under the project Ultra-trace isotope research in social and environmental studies using accelerator mass spectrometry (RAMSES), No. CZ.02.1.01/0.0/0.0/16_019/0000728. Funding Information: Authors are grateful to Mr. M. Toman (mayor of Nitrianska Blatnica) and the Civic Association of the Rotunda Jurko for support and assistance during restoration works and collection of samples. Prof. A. Ruttkay is acknowledged for useful discussions. Colleagues in participating C laboratories are acknowledged for assistance during preparation and measurement of samples. Restoration works on the St. George{\textquoteright}s Rotunda carried out in 2009–2016 were partially financed by the Ministry of Culture of the Slovak Republic. The Bratislava group also acknowledges a support provided by the EU Research and Development Operational Program funded by the ERDF (projects No. 26240120012, 26240120026, and 26240220004), by the Advancing University Capacity and Competence in Research, Development, and Innovation (ACCORD) ITMS2014 (project no. 313021X329), by the International Atomic Energy Agency{\textquoteright}s Technical Cooperation Program (project No. SLR/1001, and by the Slovak Research and Development Agency (project No. APVV- 15–0576). The Debrecen group acknowledges support from the European Union and the State of Hungary, co-financed by the European Regional Development Fund in the project of GINOP-2.3.2–15–2016–00009 “ICER.” The Prague group acknowledges support provided by OP RDE, MEYS of the Czech Republic, under the project Ultra-trace isotope research in social and environmental studies using accelerator mass spectrometry (RAMSES), No. CZ.02.1.01/0.0/0.0/16_019/0000728. 14 Publisher Copyright: {\textcopyright} 2021 Cambridge University Press. All rights reserved.",
year = "2021",
month = jun,
doi = "10.1017/RDC.2021.31",
language = "English (US)",
volume = "63",
pages = "953--976",
journal = "Radiocarbon",
issn = "0033-8222",
publisher = "University of Arizona",
number = "3",
}