There are a lot of ways that scientists can figure out what's going on beneath Earth's surface – like measuring seismic waves as they travel underground – but perhaps nothing beats a really, really, really deep hole.
Chinese scientists are hoping that the hole will significantly improve our understanding of deep Earth geology, while searches for oil and gas reserves will also be carried out as the drilling goes to lower and lower depths.
frameborder="0″ allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" allowfullscreen> China hasn't revealed too much more about the details of the borehole, or the sorts of experiments and analysis that will result when it's finished, but it could help to verify what we think we know about Earth's crust.goes down to depths averaging about 30 kilometers , so this hole won't hit the mantle.
It's a huge technical undertaking, as you can imagine. The hole won't be completed for more than a year, and some 2,000 tonnes of equipment and instruments – including drill bits and drill pipes – have been brought in for the job.. Work on that project began in May 1970 and went on until 1994, with five boreholes excavated in total due to mechanical failures and breakdowns.
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