Madagascar volcanic provinces linked to the Gondwana break-up: geochemical and isotopic evidences for contrasting mantle sources
Latest Entries
The 15 latest entries, sorted in reverse chronological order.
|
Madagascar volcanic provinces linked to the Gondwana break-up: geochemical and isotopic evidences for contrasting mantle sources
After the Gondwana break-up and Greater India splitting off, Madagascar suffered volcanic episodes. The
Cretaceous Morondava flood basalt (CFB) province was emplaced ca. 93 Ma ago. Two coeval high-Ti–P (HTP)
and low-Ti–P (LTP) suites ar...
Year: 2009
Author: Bardintzeff, J.M., Liégeois, J.P., Bonin, B., Bellon, H., Rasamimanana, G.
|
|
|
Nature, origin and significance of the Fomopéa Pan-African high-K calc-alkaline plutonic complex in the Central African fold belt (Cameroon)
The Fomopéa plutonic complex in West Cameroon comprises three petrographical units: a biotite–hornblende
granitoid (BHG) including some diorite, a biotite monzogranite (BmG) and an edenite syenogranite
(EsG). Amphibolites occur within each un...
Year: 2010
Author: Kwekam, M., Liégeois, J.P., Njonfang, E., Affaton, P., Hartmann, G., Toteu, S.F., Tchoua, F.
|
|
|
Sr–Nd isotopes and geochemistry of granite-gneiss complexes from the Meatiq and Hafafit domes, Eastern Desert, Egypt: No evidence for pre-Neoproterozoic crust
Neoproterozoic gneisses at Meatiq and Hafafit in the Eastern Desert of Egypt give Rb–Sr and U–Pb zircon
ages of 600–750 Ma. These gneisses are interpreted by different workers to represent deeper levels of
juvenile Neoproterozoic ...
Year: 2010
Author: Liégeois, J.P., Stern, R.J.
|
|
|
Flow of Canary mantle plume material through a subcontinental lithospheric corridor beneath Africa to the Mediterranean: Comment
We contend that fi eld and geochemical evidence does not favor
mantle plume fl ow under the Atlas mountain range. Early Paleocene to
late Pleistocene alkaline volcanism and post-Miocene Atlas thermal uplift,
though partly disconnected in time, res...
Year: 2010
Author: Berger, J., Liégeois, J.P., Ennih, N., Bonin, B.
|
|
|
Chronologies Grands Lacs - Semaine 5-11/10/2009
Author: J.C.Willame
|
|
|
Chronologies Grands Lacs - Semaine 28/9-4/10/2009
Author: J.C.Willame
|
|
|
Chronologies Grands Lacs - Semaine 21-27/9/2009
Author: J.C.Willame
|
|
|
Chronologies Grands Lacs - Semaine 14-20/9/2009
Author: J.C.Willame
|
|
|
Sr-Nd isotopes and geochemistry of granite-gneiss complexes from the Meatiq and Hafafit domes, Eastern Desert, Egypt: No evidence for pre-Neoproterozoic crust
Neoproterozoic gneisses at Meatiq and Hafafit in the Eastern Desert of Egypt give Rb-Sr and U-Pb zircon
ages of 600-750 Ma. These gneisses are interpreted by different workers to represent deeper levels of
juvenile Neoproterozoic crust or Archaean/...
Year: 2009
Author: Liégeois, J.P., Stern, R.J.
|
|
|
Repeated granitoid intrusions during the Neoproterozoic along the western boundary of the Saharan metacraton, Eastern Hoggar, Tuareg shield, Algeria: An AMS and U-Pb zircon age study
The N-S oriented Raghane shear zone (8°30′) delineates the western boundary of the Saharan metacraton
and is, with the 4°50'; shear zone, the most important shear zone in the Tuareg shield. It can be followed on
1000 km in the basement from s...
Year: 2009
Author: Henry, B., Liégeois J.P., Nouar, O., Derder, MEM, Bayou, B., Bruguier, O., Ouabadi, A., Belhai, D., Amenna, M., Hemmi, A., Ayache, M.
|
|
|
The role of fractional crystallization and late-stage peralkaline melt segregation in the mineralogical evolution of Cenozoic nephelinites/phonolites from Saghro (SE Morocco)
The Saghro Cenozoic lavas form a bimodal suite of nephelinites (with carbonatite xenoliths) and
phonolites emplaced in the Anti-Atlas belt of Morocco. Despite the paucity of samples with
intermediate composition between the two main types of lava (...
Year: 2009
Author: J. BERGER, N. ENNIH, J.-C. C. MERCIER, J.-P. LIEGEOIS, D. DEMAIFFE
|
|
|
A review of the Clarias species (Pisces; Siluriformes) from the Lower Congo and the Pool Malebo
A review is made of the Clarias species known from the Lower Congo and from the Pool Malebo (Congo Basin). Six valid species are recognized for the Lower Congo and the Pool Malebo; these are C. gariepinus, C. platycephalus, C. camerunensis, C. gabone...
Year: 2009
Author: Hanssens, M.
|
|
|
Chronologies Grands Lacs - Semaine 7-13/9/2009
Author: J.C.Willame
|
|
|
Chronologies Grands Lacs - Semaine 31/8-6/9/2009
Author: J.C. Willame
|
|
|
Chronologies Grands Lacs - Semaine 24-30/8/2009
Author: J.C. Willame
|
