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Research from Teesside University sheds new light on how Vesuvius victims died

23 January 2020 @TeessideUni

 

Some victims of the Mount Vesuvius eruption in AD 79 had a slower death than previously believed, new research by Teesside University has found.

Professor Tim Thompson
Professor Tim Thompson

It was initially thought that the residents of the seaside town of Herculaneum, who fled to stone boat houses along the beachfront when disaster struck, were vaporised by the extreme heat of the volcanic eruption.

But new research by academics from Teesside University and the University of York challenges this interpretation.

The study, published in Antiquity, re-examined the victims’ skeletons, revealing their structure and remaining collagen was inconsistent with vaporisation, suggesting that the bodies were not exposed to temperatures as extreme as expected. Instead, they may have lived long enough to suffocate from the toxic fumes of the pyroclastic flow.

Forensic expert and lead author of the study Professor Tim Thompson, Associate Dean in Teesside University’s School of Health & Life Sciences, said: “The people hid for protection, and got stuck. The general theory has been that these individuals were instantly vaporised.

'Vaporisation isn't necessarily in keeping with what we see forensically in modern volcanic eruptions.'

The eruption of Mount Vesuvius buried the Roman town of Pompeii and the pyroclastic flow destroyed nearby Herculaneum. More than 340 people who took refuge in the town’s vaulted stone boathouses (fornici) perished.

Tests conducted on the ribs of 152 individuals from the fornici revealed they did not match the patterns expected if they had been exposed to extremely high temperatures (over 300 – 500 °C).

'The residents saw the eruption and had a chance to attempt to escape,” said Professor Thompson.

'It gives a snapshot into the way in which these people responded and reacted to the eruption.

It gives a snapshot into the way in which these people responded and reacted to the eruption.

Professor Tim Thompson

'What was interesting was that we had good collagen preservation but also evidence of heat-induced change in the bone crystallinity. We could also see that the victims had not been burned at high temperatures.'

Another of the academics involved in the study, Professor Oliver Craig from the Department of Archaeology at the University of York, said: 'The realisation that collagen was present in the Herculaneum bones was completely unexpected. We realised then that commonly held assumptions regarding the manner of their death could not be true.

'If the bones were exposed to extreme heat then we would expect the collagen to be lost very quickly from the bone. Finding collagen was our first indicator of lower temperature exposure.'

Several factors may help explain why the people taking refuge in the fornici experienced lower temperatures than expected. Firstly, the pyroclastic flow may have been relatively cool, with some estimates suggesting it was only 240°C. The fornici may have also provided some insulation, further lowering the temperature people were exposed to.

As well as shedding new light on the story of Vesuvius, the discovery has also opened up new avenues for research.

Professor Craig added: 'Thanks to the collagen preservation in the bones of the Herculaneum victims, we have been able to commence a whole suite of further analyses. For example, through stable isotope measurements we have gained a unique snapshot of Roman diet.'

The paper ‘A re-evaluation of manner of death at Roman Herculaneum following the AD 79 eruption of Vesuvius’ is published in Antiquity Volume 94, Number 373.


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