July 2016

Highlighting the root of a paleoproterozoic oceanic arc in Liptako, Niger, West Africa

In the southwest branch of the Diagorou-Darbani greenstone belt, mafic to ultramafic plutonic rocks outcrop in Pogwa area. Field relations show that these rocks are clearly intrusive in flattened pillowed-metabasaltes. They are made up of gabbros and pyroxenites with ultramafic rocks cropping out as panels or scattered lenses. Petrographic characters are suggestive of metamorphic grade varying from greenschist to...

Author(s): Soumaila Amadou, Garba Zibo, Moussa Issaka Abdoulkader, Nouhou Halitt and Sebag David,