 Quebec group is of considerable economic interest inasmuch as it is the great metalliferous formation of North America. To it belongs the gold which is found along the Appalachian chain from Canada to Georgia, together with lead, zinc, copper,, silver,...  The Canadian Naturalist and Geologist - Página 951861Vista completa - Acerca de este libro
 | 1861 - 500 páginas
...lowest shales of the Primordial zone, to which, however, palzeontologically they appear to belong. Tliis Quebec group is of considerable economic interest...particularly chrome and nickel, with the ophiolites and magnesian rocks of this series, while they are wanting in similar rocks of Lnurentian age. (This Journal',... | |
 | 1861 - 970 páginas
...recent than the lowest shales of the * Murchison, Quar. Jour. Oeol. Society, vol. XT, 353 and xvi, 216. Primordial zone, to which, however, palaeontologically...particularly chrome and nickel, with the ophiolites and magnesian rocks of this series, while they are wanting in similar rocks of Laurentian age. (This Journal,... | |
 | 1861 - 534 páginas
...perhaps more recent than the lowest shales of the Primordial zone, to which however, palaeontologies! ly they appear to belong. This Quebec group is of considerable...is found along the Appalachian chain from Canada to Georgirt, together with lead, zinc, copper, direr, cobalt, nickel, chrome and titanium. I have long... | |
 | 1862 - 448 páginas
...chemically precipitated carbonate of lime, or travertine, and not limestone of organic origin. The Quebec group is of considerable economic interest,...chain from Canada to Georgia, together with lead, copper, zinc, silver, cobalt, nickel-chrome and titanium. The immense deposits of copper ores in eastern... | |
 | 1862 - 476 páginas
...passage to the succeeding formation. We may suppose, says Mr. Hunt, that while the Potsdam sandstone The Quebec group is of considerable economic interest,...chain from Canada to Georgia, together with lead, copper, zinc, silver, cobalt, nickel-chrome and titamum. was being separated along the shores of the... | |
 | 1862 - 448 páginas
...chemically precipitated carbonate of lime, or travertine, and not limestone of organic origin. The Quebec group is of considerable economic interest,...chain from. Canada to Georgia, together with lead, copper, zinc, silver, cobalt, nickel-chrome and titanium. » The immense deposits of copper ores in... | |
 | 1862 - 446 páginas
...chemically precipitated carbonate of limei or travertine, and not limestone of organic origin. The Quebec group is of considerable economic interest,...along the Appalachian chain from Canada to Georgia, togcther with lead, copper, zinc, silver, cobalt, nickel-chrome and titanium. The immense deposits... | |
 | 1865 - 458 páginas
...chemically precipitated carbonate of lime, or travertine, and not limestone of organic origin. The Quebec group is of considerable economic interest,...chain from Canada to Georgia, together with lead, copper, zinc, silver, cobalt, nickel-chrome and titanium. The immense deposits of copper ores in eastern... | |
 | Alexander Murray, Newfoundland. Geological Survey, James P. Howley - 1881 - 562 páginas
...expresses his views regarding the economic importance of the Quebec group in the following words : — " This Quebec group is of considerable economic interest,...particularly chrome and nickel, with the ophiolites and other magnesiim rocks of this series, while they are wanting in similar rocks of Laurentian age. The immense... | |
 | Geological Survey of Newfoundland - 1881 - 562 páginas
...expresses his views regarding the economic importance of the Quebec group in the following words : — " This Quebec group is of considerable economic interest,...particularly chrome and nickel, with the ophiolites and other magnesian rocks of this series, while they are wanting in similar rocks of Laurentian age. The immense... | |
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