Publications scientifiques
Philomene Estelle Nga Essomba
Brice Kamguia Woguia
Jean Paul Nzenti
Gus Djibril Kouankap Nono
Goldschmidt Abstracts
The geodynamic evolution of the Eseka is investigated by means of geochemistry and petrology of serpentinites closely associated with Paleoproterozoic eclogitic metabasites. These rocks are characterized by pseudomorphic textures, including mesh microstructure, formed by serpentine intergrowths, with cores of olivine, bastites after pyroxene. Two distinct types of serpentinites are highlighted. Type 1 with high MgO (40 wt%) content and high Mg# values (88.80); whereas Type 2 serpentinites display relatively low MgO concentration and Mg# values (40 and 82.88 wt%, respectively). Both types have low Al/Si and high Mg/Si ratios than the primitive mantle, reflecting a refractory abyssal mantle peridotite protolith.
