-
Greenschists are
metamorphic rocks that
formed under the
lowest temperatures and
pressures usually produced by
regional metamorphism,
typically 300–450 °C...
- mode or origin.
Special names still in wide use
include amphibolite,
greenschist, phyllite, marble, serpentinite, eclogite, migmatite, skarn, granulite...
- a
common product of
retrograde metamorphism of
metabasalt at (upper)
greenschist facies conditions. Often, this will take on the
crystal form and habit...
-
common in low-grade
metamorphic rocks and in
altered igneous rocks.
Greenschist,
formed by
metamorphism of
basalt or
other low-silica
volcanic rock,...
- may be of
algal origin.
Graphite schist is
known to have
experienced greenschist facies metamorphism, for
example in the
northern Andes. Metamorphosis...
-
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...
- +
quartz In metapelites:
muscovite +
chlorite +
albite +
quartz The
greenschist facies is at low
pressure and temperature. The
facies is
named for the...
-
within orogenic belts as
terranes of
lithology in
faulted contact with
greenschist or
rarely eclogite facies rocks. Blueschist, as a rock type, is defined...
-
Homestake Formation, has been
deformed and metamorphosed,
resulting in
upper greenschist facies of siderite-phyllite, and
lower amphibolite facies of grunerite...
- Calcite-chlorite
slickenfibres on a
small fault cutting greenschist-facies
metavolcanic rocks of the
Saddlebag Lake Roof Pendant,
Sierra Nevada, California...
