Metamorphic: sedimentary and igneous rocks have been buried, subjected to pressure and heat and eventually altered to form the Vishnu schist seen in the Canyon.
(Metamorphic: sedimentary and igneous rocks; have been buried; subjected to pressure and heat and eventually altered) (Metamorphic: sedimentary and igneous rocks; subjected; to pressure and heat) (the Vishnu schist; seen; L:in the Canyon)
Metamorphic: sedimentary and igneous rocks Metamorphic: sedimentary and igneous rocks the Vishnu schist
have been buried subjected seen
subjected to pressure and heat and eventually altered
to pressure and heat
L:in the Canyon