These minerals are found in metamorphic rocks – rocks transformed by heat, pressure or both. One of the great joys in studying metamorphic rocks lies in microanalysis of their minerals.

There are three main types of rock: igneous rock, metamorphic rock, and sedimentary rock ... Reading the layers is complicated by the fact that as continents move and mountains rise, the layers are ...

The Grenvillian Orogeny was a drawn-out mountain building event occurring in the Mesoproterozoic ... within the St. Fulgence region of Quebec is one region in which precise metamorphic dates have not ...