These 4-billion-year-old rocks found in Canada may reveal how Earth’s first continents formed
Canada's ancient Acasta Gneiss, over four billion years old, offers a rare window into Earth's infancy. Microscopic zircon crystals within these rocks reveal crucial chemical data, detailing the planet's early, unstable crust formation. Scientists are deciphering these "polyphase archives" to understand the very beginnings of continental evolution and geological processes.
Canada's ancient Acasta Gneiss, over four billion years old, offers a rare window into Earth's infancy. Microscopic zircon crystals within these rocks reveal crucial chemical data, detailing the planet's early, unstable crust formation. Scientists are deciphering these "polyphase archives" to understand the very beginnings of continental evolution and geological processes.
