Geological Survey Bulletin

Alberta Albian to possibly Badger Creek Bank Sandstone Member basal base beds Birch Creek Blackleaf Formation blocky Cadomin calcareous chert Claystone coarse-grained sandstone Cobban collection D5962-B Cookson and Dettmann correlates crossbedded Cut Bank area Cut Bank Sandstone dark-gray DUDLEY D early Albian East Glacier Park Ellis Group foothills fossil collection Glacier County Gladstone Formation gray greenish-gray iron stains Jurassic rocks Kevin-Sunburst dome Kootenai Formation Lander Member Lateral equivalents light-gray limestone unit locally present Lower Cretaceous Lower Cretaceous Mount massive McMurray Formation measured sections Morrison and Mount Morrison Formation Moulton Member Mount Pablo Formation Mudge and Sheppard mudstone nodules noncalcareous nonmarine northern outcrop northwestern Montana palynomorphs Pondera County poorly sorted possibly late Aptian quartz ranges in thickness reddish brown sandstone and conglomerate sandstone unit Sawtooth Range Shale siltstone Singh Sun River area Swift Formation Teton County thinly laminated Trilobosporites type section unconformably Upper and middle Upper Jurassic Wolf Creek