Scientists Discover Remnants of Earth's Primordial Magma Ocean in Indian Ocean Volcano
A young volcano in the Indian Ocean is providing scientists with a rare window into Earth's distant past. Researchers have discovered traces of primordial magma—remnants from when our planet was entirely covered by a global magma ocean that later cooled and crystallized.
The discovery comes from analyzing magma erupted by this relatively recent volcanic formation. According to the research, these ancient crystals have preserved chemical signatures from the earliest days of Earth's formation, when intense heat from planetary accretion and radioactive decay kept the planet's surface in a molten state.
Understanding the magma ocean phase is crucial for piecing together Earth's geological evolution. As this primordial ocean cooled over millions of years, it differentiated into the layered structure we know today—with a dense iron-rich core, a silicate mantle, and a lighter crust.
The findings from the Indian Ocean volcano add to our growing understanding of planetary formation processes. Similar magma ocean stages are thought to have occurred on other rocky planets and moons in our solar system, making this research relevant to broader planetary science.