SEARCH Articles Figures Tables Dolomite Green River formation Eocene Green River formation Green River Formation Green River Formation, Wyoming Green River Formation, minerals Green River asphaltenes Green River dolomite Green River formation Mahogany zone Green River formation extraction Green River formation oil shale Green River lakes Green River oil shale Green River oil shales pyrolysis Green River oil-shale kerogen Green River shale Green River shale formation Green River shale minerals Green River shale properties Green River, Utah