This can be answered in two ways.
A fault.
a type of rock that forms when magma cools and hardens very slowly deep in earths crust...
Earth's plates or crust can cause earthquakes, volcanic eruptions, and the formation of mountain ranges due to tectonic plate movements and interactions. Subduction zones can also lead to the formation of deep ocean trenches and volcanic arcs.
No, scientists have not yet drilled into the Earth's lower mantle. This region of the Earth is located about 400 to 1,800 miles below the surface, making it extremely difficult to reach with current drilling technology. The deepest hole ever drilled, the Kola Superdeep Borehole in Russia, only reached about 7.5 miles deep.
The Kola Superdeep Borehole project (in the USSR) attempted to drill as deep as possible into the Earth's crust. Drilling began on 24 May 1970 and the deepest hole, SG-3, reached 12,261 metres (40,230 ft) in 1989. Earlier, in 1961, an attempt was made to reach the Mohorovicic Discontinuity, the boundary between the earth's crust and mantle, by drilling through the oceanic crust. The US, through the National Science Foundation, sponsored Project Moho, which drilled 601 feet into the crust, beginning 11,700 feet below the ocean surface.
The Earths crust is approximately 650 km deep.
gyudryuj
The earths crust its 5-70km deep in the ocean and upto 100km deep at mountain ranges. At certain areas, the crust is unstable due to moving plate tectonics.
The earths crust its 5-70km deep in the ocean and upto 100km deep at mountain ranges. At certain areas, the crust is unstable due to moving plate tectonics.
A fault.
what can form deep insides earths crust by crystallisation of melted materials
rifts
rift valleys
rifts
by heat and pressure
Physical samples of rock extracted (taken) from deep within Earths crust.
Physical samples of rock extracted (taken) from deep within Earths crust.