Hopes Advance Bay Area
Author : D. P. Gold
Publisher :
Page : 9 pages
File Size : 26,6 MB
Release : 1962
Category :
ISBN :
Author : D. P. Gold
Publisher :
Page : 9 pages
File Size : 26,6 MB
Release : 1962
Category :
ISBN :
Author : Quebec (Province). Dept. of Natural Resources
Publisher : Department of Natural Resources
Page : 9 pages
File Size : 44,56 MB
Release : 1962
Category : Geology
ISBN :
Author : Québec (Province). Department of Natural Resources
Publisher :
Page : 372 pages
File Size : 48,55 MB
Release : 1960
Category : Mines and mineral resources
ISBN :
Author : Geological Survey of Canada
Publisher :
Page : 844 pages
File Size : 19,72 MB
Release : 1903
Category : Geology
ISBN :
Author :
Publisher :
Page : 854 pages
File Size : 42,39 MB
Release : 1949
Category : Geology
ISBN :
Author : United States. Hydrographic Office
Publisher :
Page : 84 pages
File Size : 47,36 MB
Release : 1968
Category :
ISBN :
Author : Geological Survey of Canada
Publisher :
Page : 956 pages
File Size : 47,93 MB
Release : 1903
Category :
ISBN :
Author :
Publisher :
Page : 1390 pages
File Size : 30,40 MB
Release : 1953
Category : Government Publications
ISBN :
Author :
Publisher :
Page : 226 pages
File Size : 22,98 MB
Release : 1947
Category : Marine service
ISBN :
Author : James E. Gill
Publisher : University of Toronto Press
Page : 204 pages
File Size : 26,33 MB
Release : 1957-12-15
Category : Science
ISBN : 1487597541
Proterozoic time produced much of great interest to geologists, and was of tremendous economic import to the people of Canada and the United States. Most of the iron deposits of the Lake Superior district, the Michigan copper deposits, the enormously important Sudbury nickel-copper-platinum deposits, the spectacular silver deposits of the Cobalt district, and all of the important uranium ores in the Shield area are considered to have formed during this period in geological time. Proterozoic rock groups include those Precambrian rocks which are least deformed and metamorphosed. Because of their important economic deposits, they have been examined in great detail in certain localities. The results of such examination, and of others which were for reconnaissance only, are summarized in this volume of the Royal Society of Canada. Suggestions are made for revision of previous interpretations of Precambrian history, and the terminology which grew out of them. Three papers deal with problems arising from the current use of the term Proterozoic, and with possible changes in its use to bring it more into accord with the facts. Contributors to this volume are: E.M. Abraham, Robert Bergeron, R.G. Blackadar, I.C. Brown, G.H. Charleswood, J.F. Davies, K.E. Eade, W.F. Fahrig, R.M. Farquhar, James E. Gill, H.C. Gunning, J.M. Harrison, D.F. Hewitt, W.W. Moorhouse, J.E. Reesor, S.M. Roscoe, R.D. Russell, James E. Thomson, Robert Thomson, L.J. Weeks, Alice E. Wilson, J.T. Wilson, G.M. Wright.