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I.—On the Sands and Gravels Intercalated in the Boulder-clay
Published online by Cambridge University Press: 01 May 2009
Extract
The interpretation of the sands and gravels intercalated in the glacial drift is one of the most interesting problems in glacial geology. Do they, on the one hand, represent the deposits of one or more mild intervals alternating with periods of intense cold; or were they, on the other, laid down during one continuous cold period marked by such slight oscillations as can be shown to occur in connection with existing glaciers and ice-sheets?
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