Inner core of the Earth has been growing faster under Indonesia's Banda Sea and Brazil
Consistent with a replacement study, the solid-iron inner core of the world has been growing faster on one side than the opposite for over 500 million years. It is growing faster under Indonesia's Banda Sea than under Brazil, but this uneven growth pattern hasn't left the core lopsided, say seismologists at the University of California, Berkeley, who are investigating the phenomenon. Gravity has acted to evenly distribute the new growth, made from iron crystals that form as molten iron begins to chill, maintaining a spherical inner core density. Even though it doesn't leave the core lopsided, this uneven rate of growth suggests something within the outer core under Indonesia is removing heat from the inner core at a faster rate than it's under Brazil on the other side of the earth, the team said. Researchers say this discovery has helped them "prove rather loose bounds" for the age of the inner core, which is between half a billion and 1.5 billion y