Shocked meteorites provide clues to Earth's lower mantle

Deep below the Earth's surface lies a thick rocky layer called the mantle, which makes up the majority of our planet's volume. While Earth's mantle is too deep for humans to observe directly, certain meteorites can provide clues to this unreachable layer.

source https://www.lifetechnology.com/blogs/life-technology-science-news/shocked-meteorites-provide-clues-to-earths-lower-mantle