miners have been able to dig into the earths crust by big machines and other huge tools and they have only dig ed 2 miles into the earths crust
it has been washed into the oceans as the continental crust has eroded.
Fossils
Fossils
rejuvenated
The deepest scientist have been able to study earths interior depth is 12,262 meters
Miners have reached depths of approximately 10 miles (15 kilometers) into the Earth's crust, primarily in locations like the Kola Superdeep Borehole in Russia. This depth is significant as it provides valuable insights into the geological composition and conditions of the Earth's lower crust. However, even at this depth, only a small fraction of the Earth's total crust has been explored, highlighting the vastness and complexity of the planet's geology. The extreme conditions encountered at such depths, including high temperatures and pressures, pose significant challenges for mining and research.
Fossils, although technically they are not preserved in the earths crust; the minerals in the bones and pore spaces have been replaced by other harder minerals which take much longer to weather.There are a number of different fossilization processes. See this link :How are Fossils Formed?
Many elements and materials which could not have been produced any other way (like diamonds).
No, Earth's crust movement has been occurring for billions of years as part of the process of plate tectonics. The movement of the Earth's crust has shaped the planet's surface and continues to do so over long geological timescales.
The crust. We have not been able to access the other layers.
Continental drift occurs under the earths crust by convection currents in the mantle which drives the plates. It has been happening since the development of the earths core and is happening now and until the end of the earth.
There have been several attempts to drill all the way through the Earth's crust and into the mantle, but these have not yet succeeded.