Eduction (geology)
In geology, eduction is a process in which the Earth crust spreads sideways, exposing deep-seated rocks.[citation needed]
It is prominent in middle layers of the Himalayas, where gravity pushes the mountains down. Together with a high grade of erosion, this activity brings deep rocks to the surface, many from more than a depth of 100 km. The unusually fast elevation preserves rare metastable minerals, e.g. diamonds and coesite.[1]
See also
- Desert pavement, describing other forms of surface rock formation.
References
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- ↑ The Tibetan Plateau By Andrew Alden, About.com. Retrieved on April 12, 2009
