High-tech forensics investigates WA massacre

High-tech forensics investigates WA massacre
An Indigenous painting depicting the 1920s Sturt Creek Massacre in northern Western Australia. Credit: Kuningarra School

For almost a century, the people of the Kutjungka region of WA have passed on the testimony of massacres of their ancestors at Sturt Creek.

Now Flinders University researchers have found scientific evidence that indicates bodies of Aboriginal victims in the southeast Kimberley region were frequently incinerated following the event.

Working with oral testimony of the descent group, which originated from a sole adult survivor of the massacre, archaeological surveys defined two distinct sites containing thousands of fragments.

In a world first, X-ray diffraction analysis of bone fragments has been used to interpret a massacre site. The analysis, conducted by CSIRO, confirmed the fragments had been subjected to high temperatures.

The 16 samples of bone fragments tested in the laboratory showed sharp hydroxyapatite peaks (crystallite sizes 9882 nanometres and 597nm respectively) and had been subjected to extreme temperatures of 600°C for more than 80 hours, 650°C for more than 20 hours, 700°C for more than 4 hours and 800°C for more than 1 hour.

"The oral testimonies were that people were shot and burnt," says Dr Pamela Smith from Flinders University Archaeology.

"The XRD analysis from CSIRO provided the key evidence, because those bone fragments had been subjected to intensely hot fires over a very long time.

"There had to be people there maintaining those fires and temperatures for a long period. That was the evidence of human intervention."

Macroscopic and microscopic examinations of selected bone samples were also conducted to identify morphological evidence for human origin.

It was concluded that three bone fragments examined may have been human, and two of the fragments may have been from the vault of a skull.

It was concluded that there was strong pathological and archaeological evidence that the were human in origin, but that the evidence was not conclusive.

The results of the investigation are outlined in the paper 'Scientific for the identification of an Aboriginal massacre at the Sturt Creek sites on the Kimberley frontier of north-western Australia', published in Forensic Science International.

Co-authors of the paper published in Forensic Science International are Dr Pamela Smith and Professor Donald Pate from Flinders University, Dr Keryn Walshe from South Australian Museum, and Professor Robert W.Fitzpatrick and Mark Raven from CSIRO Land and Water. The project was funded by a grant from the Australian Institute for Aboriginal and Torres Strait Islander Studies awarded to the Kimberley Land Council.

The methodology used to undertake the project brought together three systems of knowledge: the oral testimonies of the descent group originating from a sole adult survivor of the massacre; historical research and scientific research.

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More information: Pamela A. Smith et al. Scientific evidence for the identification of an Aboriginal massacre at the Sturt Creek sites on the Kimberley frontier of north-western Australia, Forensic Science International (2017). DOI: 10.1016/j.forsciint.2017.08.018
Journal information: Forensic Science International

Citation: High-tech forensics investigates WA massacre (2017, October 6) retrieved 14 April 2021 from https://phys.org/news/2017-10-high-tech-forensics-wa-massacre.html
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