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Geology Of The Flathead Formation (Middle Cambrian) On The Perimeter Of The Bighorn Basin, Beartooth Mountains, And Little Belt Mountains In Wyoming And Montana, Joel A. Degenstein
Geology Of The Flathead Formation (Middle Cambrian) On The Perimeter Of The Bighorn Basin, Beartooth Mountains, And Little Belt Mountains In Wyoming And Montana, Joel A. Degenstein
Theses and Dissertations
The Flathead Formation, which is 4 to 60 metres thick in the middle and northern Rocky Mountains of Wyoming and Montana, contains cross-bedded and parallel-bedded, quartz sandstone. The formation contains marginal-marine and shallow-marine sediment that was deposited unconformably on Precambrian crystalline and sedimentary rock by an eastward-transgressing sea during middle Cambrian time.
This field study of the Flathead Formation on the perimeter of the Bighorn Basin, Beartooth Mountains, and Little Belt Mountains reveals that the formation consists of three intervals. The lower interval contains medium to very coarse, pebbly, cross-bedded sandstone and conglomerate. The middle interval contains medium to coarse, …