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II.—Geological Time

Published online by Cambridge University Press:  01 May 2009

C. Lloyd Morgan
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Extract

One of the most important questions which modern geologists have to answer is that which refers to the duration of Geological time. How long is it since the Glacial epoch? What was the date of man's appearance on the earth? How many ages have rolled by since the earth first became the habitation of organized beings? Such are the questions, daily repeated, to which we must make some answer, or, if need be, honestly confess our ignorance.

Type
Original Articles
Information
Geological Magazine , Volume 5 , Issue 4 , April 1878 , pp. 154 - 162
Copyright
Copyright © Cambridge University Press 1878

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References

1 A study of Mr. Darwin’s “Geological Observations,” published first as early as 1844, will, I think, convince the most sceptical of the continued activity of the volcanic forces in South America on a tremendous scale, which must leave some impression on underground temperature there in future ages, though I agree with Prof. Judd that there has not necessarily been the same actual display of energy at every period of the Earth’s history. This is dependent on many causes, which I hope to be able to further explain at a future time.