Unveiling the Ancient Origins of Earth's Continents

Researchers at Curtin University have developed a new framework for dating the Earth's evolution, including the formation of continents and mineral deposits. By studying lead-zinc ore deposits in Australia and analyzing a global database, they determined that 3.2 billion years ago marked a critical point in Earth's history when the planet transitioned from a layered structure to one driven by global-scale plate tectonics. This research provides insights into the composition of the Earth's mantle and the formation of continents, shedding light on the unique characteristics of our planet.