Metamorphism generally is characterized by changing conditions of pressure and temperature, and the history of these changes is called the
metamorphic P-T path
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.