Signs that Earth was once almost entirely molten found in ancient rock
By Karina Shah Greenland’s Isua supracrustal belt Hanika Rizo Chemical signatures in 3.7-billion-year-old basalt rocks from Greenland support the long-held theory that Earth was once almost entirely molten. We know very little about what early Earth looked like – but one theory says that at several times it was almost…
bubmagMarch 12, 2021