Deep inside the Earth are two huge, continent-sized masses that scientists call “lava lakes.” They lie about 2,900 kilometers deep, at the edge of the core, and according to current models, they should not exist at all.
Scientists study them using seismic waves: when the waves pass through these areas, they slow sharply, indicating that these areas have an unusual composition.
According to researcher Yoshinori Miyazaki, these are not random phenomena, but traces of the Earth’s early history. His team suggests that these structures may be oceanic remnants of ancient magma. They may have formed when silicon and magnesium seeped from the core, creating an uneven chemical mix.
