geo part 3

Metamorphism generally is characterized by changing conditions of pressure and temperature, and the history of these changes is called the

he most widespread type, takes place where both high temperature and high pressure are imposed over large parts of the crust.

or metasomatism, is often associated with mid-ocean ridges

The most prominent textural feature of regionally metamorphosed rocks is ____________,
a set of flat or wavy parallel planes produced by deformation.

The heat from igneous intrusions metamorphoses the immediately surrounding rock. This type of localized transformation, called _________________________ , normally affects only a thin region of country rock along the contact.