New Study Reveals Chemical Secret Of Earth’s 4.5 Years Billion Crust

Scientists reveal that Earth’s earliest crust from 4.5 billion years ago had the same chemical composition as modern continental crust. This discovery, published in Nature, challenges previous methods for determining when plate tectonics began. Researchers found that distinctive chemical fingerprints were always present in Earth’s protocrust, explaining why previous studies yielded vastly different timeframes spanning 800 million to 4.5 billion years.READ FULL