<page_title> Okavango Dyke Swarm </page_title> <section_title> Mineralogy </section_title> <table> <cell> Proterozoic and Mesozoic (~179 Ma in Jurassic) <col_header> Okavango dyke swarm </col_header> </cell> </table>
Okavango Dyke Swarm was formed approximately 179 million years ago.