X1021439288-00070-15768</DOCNO> Metamorphic Rocks F ORMATION P ROPERTIES P ROFILES Metamorphic rocks are sedimentary or igneous rocks that have been altered by heat and/or pressure.
(X1021439288-00070-15768</DOCNO> Metamorphic Rocks F ORMATION P ROPERTIES P ROFILES Metamorphic rocks; are; sedimentary or igneous) (rocks; have been altered; by heat)
X1021439288-00070-15768</DOCNO> Metamorphic Rocks F ORMATION P ROPERTIES P ROFILES Metamorphic rocks rocks
are have been altered
sedimentary or igneous
by heat