Honored as “A Living Legend in the Oil and Gas Business” by the world’s largest geological society. Former President of the international subsidiary of Shell Oil; founder of Roxanna Oil; former President of Arco International; former Bartell Professor of Geoscience at U. Oklahoma; Hedberg Medal for outstanding scientific achievements; Sydney Powers Medal, the highest award of the American Association of Petroleum Geologists; elected Fellow of the American Association for the Advancement of Science; elected Fellow of the Geological Society of London; cited as “Legendary Oil Finder” by Petroleum History Foundation. Knighted by President Biya of Cameroon. Marlan has led exploration teams in 62 countries. His current activities involve guiding private investors and governmental groups towards environmentally acceptable profitable ventures in shale oil and shale gas development.