Melted Rock These pieces of once ... The pattern is prevalent in quartz found at or near the Cretaceous/Tertiary (KT) boundary, the geological layer deposited at the time of the extinction.

If you buy through a BGR link, we may earn an affiliate commission, helping support our expert product labs. A group of scientists has discovered a hidden layer of molten rock under the Earth’s ...

Perseverance’s exploration of the Pico Turquino Hills revealed diverse rock outcrops that hint at ... a field of brilliant white stones composed of pure quartz. On Earth, quartz often forms ...