The first section runs from Mount Rundle to Grotto Mountain in the Bow Valley to the southern end of the Fairholme Range near Exshaw and thence to the bore holes Roxana 1 and Shell-Anglo-Canadian Pine Creek No. 1. The Rocky Mountain formation is present from Mount Rundle to Exshaw and absent eastward owing to pre-Jurassic erosion. The upper Rundle formation at Banff is shown to include the Tunnel Mountain and upper Mount Head members, both of which are present as far east as Exshaw but absent at Pine Creek. The lower Rundle, which is massive at Mount Rundle, gives place eastward to the lower Mount Head, Turner Valley, Shunda, and Pekisko formations. The Banff-Rundle contact is strongly diachronic, the upper Banff at Banff (Spirifer rowleyi) being much younger than the upp rmost Banff in the Foothills and Plains (Leptaena analoga zone) and being the age equivalent of part of the Pekisko and probably the Shunda.

The second section follows the strike northward from Pine Creek to the Superior et al. Solomon Creek No. 1 bore hole and thence to Jasper Park (Mount Greenock), Wapiti Lake, B.C. (South Gap), and to the Amerada Crown GF 23-11 bore hole north of Sturgeon Lake.

On this section the Rocky Mountain formation is represented by the "Permo-Pennsylvanian" beds at the top of the Amerada Crown well and by the upper part of the Mount Greenock formation at Jasper.

Equivalents of the Tunnel Mountain formation are probably present in the lower part of the Mount Greenock formation at Jasper and in the green sandy shales at the top of the Mississippian at Amerada Crown.

The Mount Head formation is present, though thin, in Pine Creek, doubtfully so in Solomon Creek; a coral zone at Jasper suggests that it is there in a relatively pure carbonate facies. At Wapiti Lake it is faunally recognizable (Lithostrotion zone) and the characteristic change from a silty dolomite to the underlying limestone of the Turner Valley formation can be traced to Sturgeon Lake area.

The Turner Valley formation is limestone from Jasper north, but dolomite in Solomon Creek and Pine Creek; in both these bore holes there is little or no overlying Mount Head formation.

The Shunda formation is in a silt-shale-dark lime facies in the north but becomes anhydritic to the south.

The Pekisko is everywhere recognizable and is characterized by oolitic zones. The Banff-Rundle contact retains a relatively constant age along this strike section and wherever there is fossil control the top of the Banff lies in the analoga zone. The Livingstone formation of Douglas appears to be directly correlative with the Dessa Dawn formation of Laudon.

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