Definition of marriage. 1  1a see usage paragraph below : the state of being united as spouses in a consensual and contractual relationship recognized by lawb : the mutual relation of married persons : wedlockc : the institution whereby individuals are joined in a marriage.
The majority of the surface rocks on the North American continent are sedimentary. The mountainous regions of the west and southwest are made of igneous rocks. The Appalachian Mountain region of the eastern U.S. and most of eastern Canada are made of metamorphic rocks.
Most of the continental crust is made up of igneous rocks. However,  there are metamorphic and sedimentary rocks that make up the  continental crust as well.ost of the continental crust is made up of igneous rocks. However,  there are metamorphic and sedimentary rocks that make up the  continental crust as well.