Close up of basal till sowing some oxidation and lime precipitation along joints. About 3 miles east of Cooking Lake, Alberta.

Close up contact between middle stratified drift and Leinan Till. Lower part of Middle stratified drift is covered by slope wash. Swiift Current Creek section along north sside of tributary to Swift Current Creek in Sec. 10, T. 19, R. 13, W. 3 meridian. Tuesday September 13, 1960.

Clinker formed by burning coal seam. Fort Union formation paleocene). Near Amidon, N.D.

Climate. Generalized graph of temperature variation since the Precambrian. Kummell, 1961, p. 469.

Climate. Past positions of the February marine isotherms along the Pacific Coast of North America. Kummell, 1961, p. 475.

Cliff in dislocated glacial deposits. Genetic stage of substratum in last glacial period. Fluvial plain in front of advancing glacier. A. Old Yoldia clay. The stratum is not included in the following figures. B. Stratified glacial period clay. C. Meltwater sand, fluvial deposits with discordant parallel-structure. Source: Atlas of Denmark.

Cliff in dislocated glacial deposits. Dislocation stage, last glacial period. Dislocation of the series and planing of the stratum ends by glacial movement. D. Ground moraine in glacier. G. Overthrust planes. Source: Atlas of Denmark.

Cliff in dislocated glacial deposits. Surface-forming stages in late- and post-glacial period. III. Ground moraine, deposited discordantly over dislocated meltwater deposits. IV. Deflation-plain, the result of removal of fine-grained moraine components by the alnd surface and inducing the formation of a humification horizon over stones. VI. Blown sand covering other deposits. D2. Stones. E. Humus horizon. F. Blown sand. In this substratum the present cliff was formed by the action of the sea and atmospheric forces. Source: Atlas of Denmark.

Cliff in dislocated glacial deposits. Present stage. 1. Precipice in continuous clay secions. 2. Screes. 3. Gullies between clay walls formed by the slipping sand beds, erosion of running water and wind action. 4. Beach, low tide. 5. Slide plane in screes caused by wave action. 6. Rain gulley. 7. Cone deposited sand. 8. Accumulation of blawn sand above gully. 9. Dune landscape. 10. Ridge formation through intersection of clay with surface. B-G, see slides 60-62. Source: Atlas of Denmark.

Clearwater Valley at Methy Portage. Copied from a book. Pioneer Geologists in Saskatchewan.

Clear Lake, Riding Mountain National Park, Manitoba. October 6, 1962.

Clastic dike in Flaxville formation (Miocene-Pliocene), Near Orpheim, Montana. IDentity of individual in photograph unknown.

Class cephalopoda. Ancient and modern nautiloid cephalopods, (A) Restoration of a Paleozoic orthoceraconic cephalopod, with the later part of the shell sectioned to show internal shell structure and certain soft parts. (B) 'Nautilus pompilius', the well-known "chambered nautilus" with small sectioned. (Shrock and Twenhofel, 1953, p. 441).