Widmayer, Margaret Ann2015-05-122015-05-121977https://scholarworks.montana.edu/handle/1/6378enGeology, StratigraphicSandstoneSedimentation and depositionModels and modelmakingDepositional model of the sandstone beds in the Tongue River Member of the Fort Union Formation (Paleocene), Decker, MontanaThesisCopyright 1977 by Margaret Ann Widmayer