X1014234292-00037-07431</DOCNO> Metamorphic Rocks Metamorphic rocks Metamorphic rocks started out as some other type of rock, but have been substantially changed from their original igneous, sedimentary, or earlier metamorphic form.
(X1014234292-00037-07431</DOCNO> Metamorphic Rocks Metamorphic rocks Metamorphic rocks; started out; as some other type of rock) (X1014234292-00037-07431</DOCNO> Metamorphic Rocks Metamorphic rocks Metamorphic rocks; have been substantially changed; from their original igneous, sedimentary, or earlier metamorphic form)
X1014234292-00037-07431</DOCNO> Metamorphic Rocks Metamorphic rocks Metamorphic rocks X1014234292-00037-07431</DOCNO> Metamorphic Rocks Metamorphic rocks Metamorphic rocks
started out have been substantially changed
as some other type of rock
from their original igneous, sedimentary, or earlier metamorphic form