Two olive branches buried by a Minoan-era eruption of the volcano on the island of Thera (modern-day Santorini, Greece) have enabled precise radiocarbon dating of the catastrophe to 1613 BCE, with an error margin of plus or minus 10 years, according to two researchers who presented conclusions of their previously published research during an event at the Danish Archaeological Institute of Athens.
Speaking at an event entitled 'The Enigma of Dating the Minoan Eruption - Data from Santorini and Egypt', the study's authors, Dr. Walter Friedrich of the Danish University of Aarhus and Dr. Walter Kutschera of the Austrian University of Vienna, said data left by the branch of an olive tree with 72 annular growth rings was used for dating via the radiocarbon method, while a second olive branch - found just nine metres away from the first - was unearthed in July 2007 and has not yet been analysed.
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The radiocarbon dating places the cataclysmic eruption, blamed for heralding the end to the Minoan civilisation, a century earlier than previous scientific finds.
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