On the Cause, Date, And Duration of the Last Glacial Epoch of Geology, And the Probable Antiquity of Man

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On the Cause, Date, And Duration of the Last Glacial Epoch of Geology, And the Probable Antiquity of Man
Alfred Wilks Drayson
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Thus, for example, between the Sharp and Broad mountains there are sixty-five seams, each of which is separated by what we may term a glacial epoch, or period of 31,000 years, thus making a period of above 2,000,000 years for these alone. When we consider what there is between the coal-measures and the boulder period, there is time in plenty for those who insist on these vast epochs.
Sir C. Lyell, in Antiquity of Man^ page 285, calcu- lates that the submergence of Wales to the amount of 1400 fe
...et would require 56,000 years; but if 800 feet more submergence took place, an additional 32,000 years would be required, amounting in all to 88,000 years.
* Philosophical Transactions, 1860.
Digiti ized by Google ASTRONOMICAL AND GEOLOGICAL TIME, 251 But this result is arrived at only by assuming 2^ feet per century to be the rate at which this sub- mergence occurred. If the rate were greater, as it probably would have been when the climatic con- ditions were very different, the number of years would be very different.


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