The Oldest Rocks on Earth: What They Reveal About Early Planetary History

The Earth is 4.54 billion years old — but where are its oldest rocks? In this blog, we explore the ancient zircon crystals from Jack Hills, the Acasta Gneiss in Canada, and other ancient formations that push the limits of geological time. These rocks don’t just mark Earth’s beginnings — they hold clues to the planet’s earliest crust, oceans, and even possible signs of life.