The early history of nomenclature has been adequately described by F. W. Beales (GSC, 1950).

P. E. Raymond working with the Harvard School in the Jasper area (Am. J. Sci., 1930) proposed the name Coronach for beds which he thought were in the Devonian but which were actually infaulted Carboniferous Banff equivalents. He proposed the name Bedson for rocks which he thought were at the base of the Carboniferous but which are actually Palliser (Upper Devonian). In another outcrop, the Banff and Rundle were recognized as separate units of Carboniferous age and grouped as the Moosehorn formation. None of these names has been used since.

Recent history has been plagued by names proposed informally, adopted with differing interpretations by numerous workers, and yet never given official status by publication and citation of a type locality. H. H. Beach (unpub., 1947) informally proposed the names Tunnel Mountain, Shunda, and Shunda and Dyson Creek as formations within the Rundle group. Later that year P. S. Warren divided the Rocky Mountain formation into Tunnel Mountain and Norquay members (unpub., 1947). L. M. Clark (AAPG, 1949) cited Beach's formations though he did not use them as his mapping units; W. B. Gallup (AAPG, 1951) used Beach's names in his paper on the Turner Valley field.

Beach intended his names to apply to rock units both in the Rocky Mountains and Foothills. But the beds to which he gave the same names in the two belts are not correlatable in the way he supposed. There is, therefore, a "mountain Tunnel Mountain," a "foothills Tunnel Mountain," and in this case also a "Warren's Tunnel Mountain"; a "mountain Shunda," and a "foothills Shunda," etc. Clark used the names in the "mountain" sense, Gallup in the "foothills" sense.

The Middle Banff (Warren, GSC, 1927) has been called "Clark's member" at the Gap in Bow Valley and this term has received wide currency on Canadian Stratigraphic Service logs for a rock unit beneath the Plains which is probably not correlatable with the Middle Banff in Bow Valley.

L. R. Laudon et al. (AAPG, 1949), working in NE. British Columbia, limited the name Rundle to the upper Rundle only; the lower Rundle he named Dessa Dawn formation, a term which was brought into Alberta by A. C. Spreng (AAPG, 1953).

R. A. C. Brown named the Greenock formation in the Jasper area (GSC, 1952) for beds which included equivalents of both the Upper Rundle and Rocky Mountain formations.

R. J. W. Douglas (ASPG, 1953) published a preliminary account of investigations in parts of the southern Foothills. He proposed the new formation names, Mount Head and Livingstone, each divided into a number of members, and named the Etherington member of the Rocky Mountain formation.

G. O. Raasch (privately circulated, 1954) introduced the name Storm Creek formation for the

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higher sandstones of the Rocky Mountain formation and suggested a redefinition of the Tunnel Mountain formation.

Douglas and Raasch presented their final conclusions at this meeting.

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