Geochemical mapping using stream sediments in west-central Nigeria: Implications for environmental studies and mineral exploration in West Africa

► Regional geochemical mapping and multi-element analysis of stream sediment. ► Baseline geochemical signatures of major geological domains. ► High Zr concentrations (mean 0.2%) and placer deposits of Au, U, HFSE. ► Higher As and Cr associated with coastal sediments in south-west Nigeria.