-
Greenschists are
metamorphic rocks that
formed under the
lowest temperatures and
pressures usually produced by
regional metamorphism,
typically 300–450 °C...
-
common in low-grade
metamorphic rocks and in
altered igneous rocks.
Greenschist,
formed by
metamorphism of
basalt or
other low-silica
volcanic rock,...
- mode or origin.
Special names still in wide use
include amphibolite,
greenschist, phyllite, marble, serpentinite, eclogite, migmatite, skarn, granulite...
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within orogenic belts as
terranes of
lithology in
faulted contact with
greenschist or
rarely eclogite facies rocks. Blueschist, as a rock type, is defined...
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Green Head is an
ancient Egyptian statue head (AeMP 12500) made from
greenschist and
housed in the
Egyptian Museum of Berlin, one
floor down from the...
- may be of
algal origin.
Graphite schist is
known to have
experienced greenschist facies metamorphism, for
example in the
northern Andes. Metamorphosis...
- seen: the
lower part is
sedimentary rock (brown); the
middle part is
greenschist from the
oceanic crust. The peak
itself is
gneiss from the
African continent...
- a
common product of
retrograde metamorphism of
metabasalt at (upper)
greenschist facies conditions. Often, this will take on the
crystal form and habit...
- in deep-seated
igneous rocks like
syenite as well as
serpentines and
greenschists.
Demantoid is one of the most
prized of
garnet varieties.
Grossular is...
-
component of
chromium rich
phyllitic or
schistose metamorphic rocks of the
greenschist facies.
Verdite is a type of
metamorphic rock made
mostly of an impure...
