Geology√

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Geology√

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Geology√

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Geology√

1974 Archival description results for Geology√

1974 results directly related Exclude narrower terms

Greyish white beds of Cretaceous Kanguk

Axel Heiberg Gr. Looking upvalley toward station 62 K 106 , the greyish white beds with some hard ledges ate Cretaceous Kanguk, the hard sandstone on top is Tertiary Eureka Sound.

Great Lakes - successive stages in development

Great Lakes. Successive stages in the development of the Great Lakes, North America. C. The upper lakes, swollen into the ancestral Lake Algonquin, drain, together with Lake Erie, into a seaway that occupied the St. Lawrence valley, and extended over the site of Lake Ontario. An occasional overflow from Lake Michigan. spills into the Mississippi. D. The lakes approach their present-day outlines, the upper lakes draining into the dwindling St. Lawrence seaway through the valley of what is now the Ottawa River, E, Lake Erie; F, Finger Lakes of New York State; H, Lake Huron; S, Lake Superior. Holmes, 1953, p. 243. See also XII - 111.

Great Britain and nearby parts of continental Europe

Great Britain and nearby parts of continental Europe, showing wide tracts that lie less than 600 feet below sea level. During the Ice Age there was free communication between the islands and the continent, and plants and animals migrated in both directions. A large river, of which the Rhine and Thames were tributaries, drained into the North Sea. The last separation of Great Britain from the mainland took place about 7000 years ago. Present lands are shown in gray, chief rivers and waters over 600 feet deep in back and shallowly submerged land in white. (Stokes, 1960, p. 402)

Gravel pit near Gloucester Hunt Club and Metcalfe Road

For glacial geology of Ottawa area, see C.S.C. Mem. 101. Marine clays (Leda clay) with reworked boulders over ice contact stratified drift. Leda (a pelecypod) is now known as Yoldia. Nelson Gadd in picture, shovel at contact. Gravel pit near Gloucester Hunt Club and Metcalfe Road, Ottawa, Ontario.

Results 1021 to 1035 of 1974