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I.—On the Geological Epochs at which Gold has made its Appearance in the Crust of the Earth

Published online by Cambridge University Press:  01 May 2009

David Forbes
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Extract

In the Geological Magazine, 1865, Vol. II., p. 308, reference is made to the recent discoveries of Whitney as to the occurrence of Gold in rocks of California even of an age as recent as Cretaceous. These discoveries fully confirm my previous results in South America, yet the examination of a series of specimens recently sent me from California makes me communicate these few observations upon the relations of the gold-bearing rocks in question and some remarks on the views which I have expressed with reference to the geological periods at which gold has made its appearance in the crust of our globe.

Type
Original Articles
Information
Geological Magazine , Volume 3 , Issue 27 , September 1866 , pp. 385 - 387
Copyright
Copyright © Cambridge University Press 1866

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References

page 385 note 1 Geol. Soc., 11., 1860.Google Scholar Quart. Journ. Geol. Soc., vol. xvii.Google Scholar

page 385 note 2 Vide abstract, Geological Magazine, 01, 1866, p. 23.Google Scholar

page 386 note 1 Although suhsequent researches may render it necessary to modify these conclusions, at present I am not inclined to admit that gold has appeared at other than these two epochs.

page 386 note * These so marked, as well, I believe, as California and many others, hav gold deposits of both ages.

page 387 note 1 See Forbes on Peru and Bolivia, Quart. Journ. Geol. Soc., vol. xvii.Google Scholar