Rocks from a 3.2-billion-year-old formation in Australia have changes in the direction of their magnetism over time that suggest plate tectonics started earlier than we thought
Source:
https://www.newscientist.com/article/2241509-plate-tectonics-may-have-started-on-earth-3-2-billion-years-ago/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home