Woodside Energy has denied claims chemical emissions from its operations on the Burrup Peninsula near Karratha are damaging some of the oldest rock art in the world.

There are claims sulfur dioxide emissions are scouring the surface deposits on rocks and will eventually erase the art including hundreds of images of dugongs, families, turtles, birds and snakes.

But Steve Waller from Woodside's climate change division, says its air emissions are way below legal limits.

He says the amount of sulphur dioxide released, and weather conditions on the Burrup, including low rainfall, have little or no effect on the art.

"There would be an extremely low probability that any of those emissions would actually be falling out and causing any damage to the patina of the rock surface, which is in fact a highly resistant surface which is probably not going to be affected by the weak acids created," Mr Waller said.