- new
types of rock in a
process called metamorphism. The
original rock (
protolith) is
subjected to
temperatures greater than 150 to 200 °C (300 to 400 °F)...
- A
protolith (from
Ancient Gr**** πρωτο (prōto) 'first' and λίθος (líthos) 'stone') is the original,
unmetamorphosed rock from
which a
given metamorphic...
-
Metamorphism is the
transformation of
existing rock (the
protolith) to rock with a
different mineral composition or texture.
Metamorphism takes place...
-
metamorphism creates minerals entirely based upon the
chemistry of the
protolith,
certain 'dirty marls' and
volcanic sediments may also
metamorphose to...
- type of the
original rock (the
protolith) is discernible, the
schist is
usually given a name
reflecting its
protolith, such as
schistose metasandstone...
-
Skarns may form by
metamorphic recrystallization of
impure carbonate protoliths,
bimetasomatic reaction of
different lithologies, and
infiltration metasomatism...
-
meaning "leaf". The
protolith (or
parent rock) for
phyllite is
shale or pelite; or slate,
which in turn came from a
shale protolith. Its
constituent platy...
-
Primary sedimentary textures and
structures of the
original carbonate rock (
protolith) have
typically been
modified or destro****. Pure
white marble is the result...
-
Napier Orogeny in Antarctica, 4,000 ± 200 Ma. 4031
Hadean Formation of
protolith of the
oldest known rock (Acasta Gneiss) c. 4,031 to 3,580 Ma. Possible...
-
minerals present in each
facies depends on the
composition of the
protolith. For a
mafic protolith, the albite-epidote
hornfels facies is
characterized by albite...
