-
which distinguish Proterozoic anorthosites from
Archean anorthosites (which are
typically >An80).
Proterozoic anorthosites often have
significant mafic...
- K-feldspar in
charnockites Ca-metasomatism of
deformed plagioclase in
anorthosites Here Ca-bearing
fluids enter primary alkali feldspar through cracks and...
-
Notable rock
provinces (metamorphic
igneous rocks, ultramafics, and
anorthosites) are
found on the
southwest coast at Qeqertarsuatsiaat. East of Nuuk...
-
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...
- that are
inconsistent with
calcic plagioclase compositions.
Ferroan anorthosites have been
dated using the
internal isochron method at
circa 4.4 Ga. The...
- 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...
- perspective,
geochemical mapping made from
orbit suggests a
crust of
mostly anorthosite. The Moon rock
samples of the
flood lavas that
erupted onto the surface...
- Houston, Texas.
Chemical analysis of the
Genesis Rock
indicated it is an
anorthosite,
composed mostly of a type of
plagioclase feldspar known as anorthite...
-
Front are
KREEP (pot****ium, rare-earth elements, phosphorus) materials,
anorthosites,
recrystallized norite, or
recrystallized breccia. Hadley–Apennine is...
-
black granite might be gabbro, diabase, basalt, diorite, norite, or
anorthosite.
Morales Demarco, Manuela; Oyhantçabal, Pedro; Stein, Karl-Jochen; Siegesmund...
