-
which distinguish Proterozoic anorthosites from
Archean anorthosites (which are
typically >An80).
Proterozoic anorthosites often have
significant mafic...
- A.; ****ey, J. S. Jr.; Marvin, U. B.; Powell, B. N. (1970). "Lunar
anorthosites and a
geophysical model of the moon".
Geochimica et
Cosmochimica Acta...
- K-feldspar in
charnockites Ca-metasomatism of
deformed plagioclase in
anorthosites Here Ca-bearing
fluids enter primary alkali feldspar through cracks and...
- that are
inconsistent with
calcic plagioclase compositions.
Ferroan anorthosites have been
dated using the
internal isochron method at
circa 4.4 Ga. The...
-
common mafic igneous rocks such as
basalt and gabbro, as well as in
anorthosites. The
geological type area for
labradorite is Paul's
Island near the town...
- by
magnesian anorthosites. Therefore, a LMO does not
explain the
abundance of
magnesian anorthosites, or the lack of
ferroan anorthosites,
KREEP components...
-
Notable rock
provinces (metamorphic
igneous rocks, ultramafics, and
anorthosites) are
found on the
southwest coast at Qeqertarsuatsiaat. East of Nuuk...
-
voluminous plutonic m****es of granite, diorite,
layered intrusions,
anorthosites and
monzonites known as sanukitoids.
Archean rocks are
often heavily...
-
highlands might represent primary crust,
though this is debated. The
anorthosite highlands of the Moon are
primary crust,
formed as
plagioclase crystallized...
-
Granulite Terrane is
composed of meta-igneous
gneisses including anorthosite m****ifs.
Anorthosites form in
plutons and are
composed mostly of plagioclase. The...
