-
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...
-
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...
-
Notable rock
provinces (metamorphic
igneous rocks, ultramafics, and
anorthosites) are
found on the
southwest coast at Qeqertarsuatsiaat. East of Nuuk...
- 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...
- 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...
-
black granite might be gabbro, diabase, basalt, diorite, norite, or
anorthosite.
Morales Demarco, Manuela; Oyhantçabal, Pedro; Stein, Karl-Jochen; Siegesmund...
-
astronauts David Scott and
James Irwin during the
Apollo 15 mission. This
anorthosite rock is
composed almost exclusively of the calcium-rich
feldspar mineral...
-
layers of the Moon were
molten in the past due to the
purity of
lunar anorthosites and the fact that
anorthite generally has a high
crystallization temperature...
