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IV.—The Cambrian Books of North America

Published online by Cambridge University Press:  01 May 2009

Henry Hicks
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Extract

Considerable attention has been given of late years to the faunas of the rocks in North America considered to be the equivalents of the rocks usually classed as Cambrian in this country, and the facts which have been obtained are particularly interesting to British geologists. Two recent communications by Mr. C. D. Walcott, Palaeontologist to the U. S. Geological Survey, are especially deserving of study in reference to the classification of these rocks, and many facts of importance bearing on the same question are also given in papers by Mr. G. F. Matthew, of St. John's, N.B.

Type
Original Articles
Information
Geological Magazine , Volume 4 , Issue 4 , April 1887 , pp. 155 - 158
Copyright
Copyright © Cambridge University Press 1887

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References

page 155 note 1 Meddelelser, part ii.

page 156 note 1 “ Classification of the Cambrian System of North America,” Amer. Journal of Science, vol. xxxii. and “Bulletin of the United States Geolog. Survey, No. 30,” 1886.Google Scholar

page 156 note 2 “ Illustrations of the Fauna of St. John's Group,” Trans. Royal Soc. Canada, 1885, and “ On the Cambrian Fannas of Cape Breton and Newfoundland,” Canadian Record of Science, Oct. 1886.

page 156 note 3 Bulletin U.S. Geolog. Survey, No. 30, 1886

page 157 note 1 Trans. Roy. Soc. Canada, 1883, and “ Mineral Physiology,” etc. 1886, p. 528.

page 158 note 2 In a former paper (Geol. Mag. Aug. 1885) I ventured to suggest that the term “ Cambrian,” instead of being confined to the lowest rocks, might fairly be extended as a main term to indicate the whole of the Lower Palaeozoic rocks, and that the name “ Georgian” (from St. George's Channel, on the borders of which the lower rocks are best exposed) would be a suitable term for the lowest rocks. I have since found that the Middle Cambrian rocks of Franklin County, Vermont, America, had previously been designated the “ Georgia Group”; therefore it is evident that the adoption for a much larger division of the term “Georgian” would only lead to contusion. It is better, therefore, to confine the term “ Cambrian ” as in the present paper to the rocks underlying the “ Ordovician.”