 | Coltorti, M., Bonadiman, C., Hinton, R. W., Siena, F., Upton, B. G. J. (1999) Carbonatite Metasomatism of the Oceanic Upper Mantle: Evidence from Clinopyroxenes and Glasses in Ultramafic Xenoliths of Grande Comore, Indian Ocean. Journal of Petrology, 40 (1) 133-165 doi:10.1093/petroj/40.1.133 | Journal (article/letter/editorial) | | Clinopyroxenes and Glasses in Ultramafic
Xenoliths of Grande Comore, Indian Ocean
M. COLTORTI1∗, C. BONADIMAN1, R....xenoliths (lherzolites and wehrlites) from La Grille
volcano, Grande Comore island. These xenoliths have peculiar...respect, the peridotite xenoliths from La Grille
volcano (Grande Comore island) are of primary importance...beneath Grande Comore was
a carbonate-rich melt. Mineral and glass compositions of
the La Grille xenoliths...volcanic islands; Grande Comore, Moheli, Anjouan and Mayotte (Fig. 1). Grande
Comore, the westernmost and |  | | Journal (article/letter/editorial) | | The Petrology of the Lavas of Grande Comore
by D. F. STRONG
Department of Geology, Memorial University...islands are Mayotte, Anjouan, Moheli, and Grande
Comore, distributed over a distance of 275 km along a...the east to the two active volcanoes of Grande Comore
in the west.
[Journal of Petrology, Vol. 13, P«rt...submerged Mayotte to the active Kartala volcano on Grande
Comore. The volcanic rocks on all the islands...derivatives.
Grande Comore is formed of two coalescing shield volcanoes, La Grille in the north and
Kartala |  | | Journal (article/letter/editorial) | | plume–lithosphere interactions in the genesis of Grande Comore
magmas žIndian Ocean /
C. Deniel )
UMR 6524 CNRS...distinguished among the Grande Comore lavas: Old Karthala, Recent Karthala and La Grille. Major and
trace element...slightly undersaturated lavas Žshield-stage. and La
Grille strongly undersaturated primary melts Žpost-shield...incompatible
elements, with relative enrichments in Ba, Nb, La and relative depletions in Rb, K, Sr, Sm. Low HREE...indicate that garnet is residual in their sources. La Grille lavas exhibit the highest and
most variable degrees |  | | Book (volume) | | Oceanography
La Jolla, California
David K. Hobday
Joseph R. Curray
Scripps Institution of Oceanography
La Jolla...Lumpur, Malaysia
Scripps Institution of Oceanography
La Jolla, California
P. E. Kent
Natural Environment...David G. Moore
Scripps Institution of Oceanography
La Jolla, California
Alan E. M. Nairn
Department of...I.M
200' ::: _:::.
I!Oc
.~~~~.
300'
~~~~~ -.-la~
.00-
~:~~~
110.... 01'
~ .:-:~ .
INNER FAN
...Clocchiatti, M., 1976, La dissolution des carbonates en milieu oceanique. Son
role dans la genese des depots |  | | Book | | Er
Eu
F
Fe
Fr
Ga
Gd
Ge
H
He
Hf
Hg
Ho
I
In
Ir
Κ
Kr
La
Li
Lu
Mg
Mn
dysprosium
erbium
europium
fluorine...1.1
MINERALOGY OF IGNEOUS ROCKS
3
(continued)
La
Ce
Pr
Nd
[Pm]
Sm
Eu
Gd
Tb
Dy
Ho
Er
Tm
Yb
Lu
Lanthanum...1.81
1.96
1.32
1.25
1.72
1.72
1.34
Sc
3+
Y
3+
La
3+
Ce
2+
Eu
3+
Eu
3+
Lu
2+
Sr
2+
Ba
+
K
+
Rb
+...H ) 2
Α , Β, C, F, G,
Ν, Ρ
a, c
Monazite
(Ce,La,Th)P04
G, Ρ
Fluorite
CaF2
Ρ
f
Calcite
CaC03...may be superimposed to form a basaltic
shield volcano with low-angle slopes commonly no steeper than |
|