Chris Anani, Modupe Moradeyo, David Atta-Peters, Jacob Kutu, Daniel Asiedu, Daniel Boamah
Sandstones from the Middle Voltaian Oti-Pendjari Group in the Anyaboni and surrounding areas were analyzed for their major oxides and trace elements. The purpose of study is to infer their provenance and depositional tectonic setting. On the basis of their major element compositions the sandstones may be classified as either quartz arenite or subarkose. Discrimination diagrams based on major element geochemistry suggest that the sediments were derived from recycled sedimentary rocks. However, when the samples are normalized to average Neoproterozoic cratonic rocks they show enrichment in ferromagnesian trace elements such as Cr, Co and V which suggests some input from mafic source. Tectonic discrimination method based on major element geochemical data of sandstones suggests deposition in a passive continental margin
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