-
Boninites can be
derived from the
peridotite residue of
earlier arc
tholeiite generation which is
metasomatically enriched in LREE
before boninite volcanism...
- wt%. High-alumina
basalts have
aluminium contents of 17–19 wt% Al2O3;
boninites have
magnesium (MgO)
contents of up to 15 percent. Rare feldspathoid-rich...
- Deschamps, A.; Lallemand, S. (2003). "Geodynamic
setting of Izu-Bonin-Mariana
boninites". In Larter, R.D.; Leat, P.T. (eds.). Intra-Oceanic
Subduction Systems:...
-
adakites are
distinct from
another variety of high-Mg
andesite called boninite;
boninites have
major element concentrations similar to sanukitoids, but they...
-
equilibrium with the melt in
which they are found. High-magnesium
andesites (
boninites) in
island arcs may be
primitive andesites,
generated from metasomatized...
- such as
picritic basalt, komatiite, and
highly magnesian magmas that form
boninite, take the
composition and
temperatures to the extreme. All have a silica...
- Basanite – Type of
volcanic rock Blairmorite – Rare
porphyritic volcanic rock
Boninite –
Ultramafic extrusive rock high in both
magnesium and
silica Carbonatite –...
-
boninite-like
amphibolites have been
interpreted to
represent metamorphosed boninites. However,
subsequent studies have
pointed out that the
boninite-like...
- of
basaltic composition,
although pillows formed of komatiite, picrite,
boninite,
basaltic andesite, andesite,
dacite or even
rhyolite are known. In general...
-
Ultramafic lavas, such as
komatiite and
highly magnesian magmas that form
boninite, take the
composition and
temperatures of
eruptions to the extreme. All...
