Scientists have recently unravelled the mystery of "The Great Unconformity," a phenomenon where large sections of the Earth's crust are missing from the geological record.

Scientists now know what happened to a chunk of Earth’s crust missing for millions of years

Chinese scientists have started drilling a 10,000-metre (32,808 feet) hole into the crust of the Earth, as the second largest economy of the world is exploring new frontiers not just above but below the surface of the planet.

China drilling 10,000-metre deep hole into Earth's crust. Here's why

A four million-year-old chunk of the Earth's crust, the size of Ireland, has been found floating under Western Australia. According to the research which was published online on June 17 in the journal Terra Nova, the old crust spans an area of at least 38,610 square miles (100,000 square kilometres) and is buried "Tens of kilometres" underground.

Crust almost as old as the planet and thousands of kilometres long found floating under Australia

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earths crust

Scientists now know what happened to a chunk of Earth’s crust missing for millions of years

China drilling 10,000-metre deep hole into Earth's crust. Here's why

Crust almost as old as the planet and thousands of kilometres long found floating under Australia