- of
either tholeiitic olivine or
picritic basalt. The
tholeiitic shields tend to be
wider and
shallower than the
picritic shields. They do not
follow the...
- the
classification of fine
grained rocks recognises a
group known as '
picritic rocks' that are
characterised by high
magnesium content and less than 45%...
-
ultramafic rocks elsewhere in the
solar system.
Examples include komatiite and
picritic basalt.
Komatiites can be host to ore
deposits of nickel.
Ultramafic tuff...
- lava of at
least 18 wt%
magnesium oxide (MgO). It is
classified as a '
picritic rock'.
Komatiites have low silicon, pot****ium and aluminium, and high to...
- the ac****ulation of
olivine crystals on the
floor of
large basaltic or
picritic magma chambers.
These "****ulate"
dunites typically occur in
thick layers...
-
basalt lava flows. 3 5,000–10,000
alkali basalt with
minor amounts of
picritic basalt,
hawaiite and
ankaramite 15 185
mostly southern flank and summit...
- 45. ISBN 978-0-87842-568-6.
Oxford Academic:
Crustal Contamination of
Picritic Magmas During Transport Through ****s: the Expo
Intrusive Suite, Cape Smith...
-
similar to entrail-type
pahoehoe lavas on land.
Ultramafic magmas, such as
picritic basalt, komatiite, and
highly magnesian magmas that form boninite, take...
- The
maria on the Moon have been
described as
flood basalts composed of
picritic basalt.
Individual eruptive episodes were
likely similar in
volume to flood...
- worldwide,
exposing up to 6000 m of
basal sediment-sill complexes,
basaltic to
picritic pillow lavas,
pillow breccia, and thick, m****ive
basalt flows. The widespread...
