Did A Huge Asteroid Create Australia’s Goldfields?
Could one of the largest asteroid impacts in Earth's history be connected to Victoria's legendary goldfields? Beneath the Murray Basin lies the mysterious Deniliquin Structure, a buried circular feature more than 500 kilometres wide that some scientists believe may represent an ancient impact crater of unprecedented scale. While Victoria's gold deposits are traditionally explained by mountain building, fault systems, hydrothermal fluids, and granite intrusions during the Lachlan Orogen, the possibility remains that a colossal impact event may have altered the crust long before the gold arrived. If the Deniliquin Structure is truly an impact crater, it could have created deep crustal weaknesses that later guided fault formation, fluid movement, and gold mineralisation across southeastern Australia. Yet despite compelling geophysical evidence, definitive proof remains elusive. No shocked quartz, impact melt, or confirmed ejecta layer has been discovered. The result is one of Australia's greatest geological mysteries—one that could potentially rewrite the story of how Victoria's richest goldfields came to exist.
