4 Billion Years – World’s Oldest Known Rocks Provide Clues to Early Tectonics

4 Billion Year Old Granite Rock from the Northwest Territories, Canada

The oldest rock in the world: 4 billion years old granite rock from the Northwest Territories, Canada. Credits: Prof. Li Xianhua’s group Currently, Earth stands alone as the only identified planet sustaining life, largely thanks to the dynamics of plate tectonics. This process plays a crucial role in recycling vital biogeochemical elements and keeping the … Read more