Ancient drop of seawater shows Earth’s tectonic activity began 3.3 bn years ago

According to scientists, tectonic activity began on Earth 3.3 billion years ago. It was previously assumed that tectonic activity began about 2.7 billion years ago on Earth. The conclusion came from scientists after they studied a microscopic bead of cooled magma which was protected by it olivine crystal. The olivine crystal was found in a… Continue reading Ancient drop of seawater shows Earth’s tectonic activity began 3.3 bn years ago