Revision of type Cambrian formations and sections of Montana and Yellowstone National Park

Lower and Middle Cambrian stratigraphy of southwestern Alberta and southeastern British Columbia

“…Since 1935 the writer has revised Lower and Middle Cambrian type sections and formations in the Cordilleran area (Deiss, 1936(Deiss, , 1939a(Deiss, , 1939b. The need for this revision and the problems involved were dis cussed in detail as each part of the work was completed.…”

Geology and ground-water resources of the Gallatin Valley, Gallatin County, Montana

“…Several papers that deal with the regional stratigraphy of Montana include extensive reference to the Paleozoic section in the INTRODUCTION 7 Horseshoe Hills along the north margin of the Gallatin Valley. Notable among these are papers on the Cambrian section by Deiss (1936), Berry (1943), Lochman (1950), and Hanson (1952) and on the Devonian section by Sloss and Laird (1946). The Precambrian rocks near Gallatin Gateway at the southern end of the valley are described in detail by Clabaugh (1952), with special reference to the occurrence of corundum.…”

“…peripheral mountains. In summarizing the age, lithology, thickness, and relationships of the Precambrian, Paleozoic, and Mesozoic rocks, the writers have drawn freely on reports by Peale (1896), Berry (1943), Deiss (1936), Gardner and others (1945), Sloss and Laird (1946), Lochman (1950), Sloss and Moritz (1951), Hanson (1952), andMcMannis (1955).…”

A geologic reconnaissance of parts of Beaverhead and Madison Counties, Montana

“…shale). A more detailed study of the Cambrian rocks in the Blacktail Mountains is needed to establish correlations with better known sections to the northeast, east, and southeast (Deiss, 1936(Deiss, , pp. 1303(Deiss, -1325.…”

“…This shale, which is probably the Dry Creek shale of late Cambrian age (Peale, 1893, pp. 29-32;Deiss, 1936Deiss, , pp. 1335Deiss, -1337, is overlain by the Jefferson dolomite, which consists of 1,000 to 1,500 feet of dark-gray to black, sugary, fetid, generally very poorly bedded dolomite.…”