See metamorphism, regional

see mantle plume

see lithospheric plate

ity

 A coarse grained, dark coloured igneous rock consisting mainly of olivine and pyroxene, which is believed to be the major constituent of the mantle.

The name given by Wegener to the supercontinent that he proposed to explain the ice distribution at 300 Ma. It came into being during the Permian and existed for around 40 million years. It was a sing [..]

 A fold mountain belt such as the Andes or Himalayas (see mountain building

 The process whereby ocean crust (and even upper mantle) are scraped off the descending ocean plate at a convergent plate boundary and thrust onto the adjoining plate. Often associated with an accreti [..]