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Discovery of Vast Mountain Ranges in the Deep Earth Using Seismology

Hansen and her team discovered vast mountain ranges in the deep Earth, peaks up to four times the height of Everest, using seismology.

06 June 2023 · 04:12 UTC

These mountains occur at the critical threshold between the planet's metallic core and the surrounding rocky mantle and are likely to be present all over the world.

They were first discovered in 1996 by studying seismic waves created by earthquakes and nuclear bombs and since then, similar mountains have been found lurking at scattered locations all around the core.

However, despite decades of study, the origin and composition of these mountains remains a mystery.

The article discusses the discovery of deep-Earth mountains below Antarctica using seismology.

The temperature at the core-mantle boundary can reach atom-bending highs of 5,500C (9,932F).

The hottest parts of the core-mantle boundary may become partially molten, which is what geologists see as ULVZs. The deep-Earth mountains could be made from a subtly different material to the surrounding mantle, or the remains of ancient oceanic crust that settled at the core-mantle boundary over hundreds of millions of years.

There are two mystery structures called LLSVPs, located in the Pacific and Africa, which are thought to be billions of years old and made from ancient oceanic crust.

The existence of deep-Earth mountains below Antarctica contradicts this, as it is far away from these structures.

The team found deep-Earth mountains at every site they sampled in Antarctica, which could form a continuous blanket that wraps around Earth's core.

If the mountains are widespread, it would have implications for what they are made of and how they are linked to the larger blob structures.

The study of the deep-Earth mountains is still in its early stages, and new techniques for identifying smaller structures and the development of new techniques for identifying smaller structures are needed to learn more about these mysterious structures.