The Roman Amphiteatre in Mérida, Spain: Augustan or Flavian? Radiocarbon Dating Results on Mortar Carbonate

Alf Lindroos*, Jan Heinemeier, Åsa Ringbom, Thomas Schroeder Daugbjerg, Irka Hajdas

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

Abstract Four lime mortar samples from the Mérida amphitheatre in Spain were dated in 2001 and re-dated in 2019 with refined dating methods and focus on carbon dioxide that was released in late CO2 fractions when dissolved in phosphoric acid. The samples were difficult to date because they contained highly soluble, young carbonate contamination that dominated the carbon dioxide from the early stages of the reaction with the acid in the hydrolysis process. They were also rather hydraulic and rich in magnesium, which could have caused delayed hardening. However, there was very little dead carbon contamination so that late carbon dioxide fraction gave uniform 14C ages, pointing to a late 1st c. AD Flavian, or later age of the amphitheatre.
Original languageEnglish
Pages (from-to)187-195
Number of pages9
JournalGeochronometria
Volume47
DOIs
Publication statusPublished - 30 Sep 2020
MoE publication typeA1 Journal article-refereed
EventCONFERENCE PROCEEDINGS OF THE 13TH INTERNATIONAL CONFERENCE “METHODS OF ABSOLUTE CHRONOLOGY” JUNE 5-7TH, 2019, TARNOWSKIE GORY, POLAND: CONFERENCE “METHODS OF ABSOLUTE CHRONOLOGY” JUNE 5-7TH, 2019, TARNOWSKIE GORY, POLAND - Tarnowskie Gory, Poland
Duration: 5 Jun 20207 Jun 2020

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