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“These microorganisms are photosynthetic bacteria, like cyanobacteria or algae, which can utilise carbon from the air normally, and are active through wet periods,” said Levchenko.One of the peer review authors who reviewed the paper prior to publication predicted it could become a benchmark for studies of this type as it addressed a complete lack of chromometric data for rock art in Australia and elsewhere.What are the different methods used to date such artworks?And what are some of the challenges involved in dating them?Archaeologists and Aboriginal elders are hoping the most comprehensive study of rock art done in the Kimberley region will confirm the images to be among the oldest made by humans anywhere in the world.

New excavations and improved dating techniques push the date further back into the distant past.

Lead author Giles Hamm, a consultant archaeologist and doctoral student at La Trobe University, found the site with local Adnyamathanha elder Clifford Coulthard while surveying gorges in the northern Flinders Ranges.

Australia is blessed with many beautiful examples of Aboriginal cave paintings and engravings but what does science tell us about how old they are?

A new technique, developed at ANSTO’s Centre for Accelerator Science, has made it possible to produce some of the first reliable radiocarbon dates for Australian rock art in a study just published online in The approach involved extracting calcium oxalate from a mineral crust growing on the surface of rock art from sites in western Arnhem Land, according to paper co-author research scientist Dr Vladimir Levchenko, an authority on radiocarbon dating using accelerator mass spectrometry.

Levchenko, who supervised the radiocarbon dating, collaborated with lead author of the paper, Ms Tristen Jones, a Ph D candidate at the Australian National University (ANU) and co-authors from ANU.

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