Figure 9. Molecular proportions of Al2O3–(Na2O + CaO*)–K2O ternary diagram [45] for the metasedimentary rocks of Mbondo-Ngazi Tina formations with Chemical Index of Alteration (CIA) scale

From

Geochemistry of the Neoproterozoic Mbondo-Ngazi Tina Metasediments, Adamawa Area, Central Cameroon: Source Provenance and Tectonic Setting

Alexis Hamdja Ngoniri, Timoleon Ngnotue, Evine Laure Tanko Njiosseu, Patrick Ayonta Kenne, Sylvestre Ganno, Jean Paul Nzenti

Journal of Geosciences and Geomatics. 2020, 8(2), 94-109 doi:10.12691/jgg-8-2-5