Pre-Cambrian, Paleozoic, and Mesozoic Tertiary (?) rocks _______________________ Little Cottonwood stock. ____________ Lavas and water-laid volcanics _______ Quaternary deposits in the mountains. Glacial deposits __ _ ________________ Alluvial and other surficial deposits. __ Some relationships between the source rocks and valley sediments. _________________________ Deposits in Utah Valley_-__-____-____-____ Salt Lake formation (Tertiary) ___________ Pre-Lake Bonne ville deposits (Pleistocene) __ Exposed deposits ___________________ Concealed deposits. _ ________________ Lake Bonneville group. _ _______________ Alpine formation. _ __________________ Gravel member_________________ Sand member_-______-________-Silt and clay member _ _________ Bonneville formation. _______________ Prove formation.

Introduction ______________________________ General location and purpose of the work. Geography and elimate_________________ Fieldwork and acknowledgments_______ Cretaceous stratigraphy ____________________ Montana group______________________ Post-Montana group formations_________ Subsurface bedrock formations __________ Exposed bedrock formations____________ Judith River formation _____________ Bearpaw shale.________-__--_.-_-_-Fox Hills sandstone.-___-_-_____-__ Strata overlying the Montana group.____ Hell Creek formation_____________ Structure _________________________________ Regional structural setting._____________ Structural features in the Fort Peck area_ Deformation at Tiger Butte_________ Post-Cretaceous stratigraphy._______________ General statement _____________________ Formations antedating glaciation________ Tertiary deposits______________________ Flaxville formation_______________ Quaternary deposits______-__-_-_-____ Wiota gravels.

No abstract

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