Abstract
I. GLACIAL AND GENIAL PERIODS. AFTER the primary discovery of geologists that the various strata of rocks exposed at the earth's surface could be arranged in chronological order, and that when so arranged they represented a sequence covering a very long period of time, the most striking result of their investigations has concerned the great variations of climate which all parts of the earth's surface have passed through. Coral reefs have extended into the British Isles and central Europe, and evergreens have flourished beyond the Arctic Circle. At the other extreme, large areas now enjoying a temperate or even tropical climate were covered by thick ice-sheets.
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References
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Köppen, Wladimir, und Wegener, Alfred, "Die Klimate der geologischen Vorzeit". Berlin, 1924.
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British (Terra Nova) Antarctic Expedition, 1910–1913, "Glaciology", by C. S. Wright and R. K. Priestley . London, 1922.
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BROOKS, C. Climatic Changes during Geological Times. Nature 118, 15–17 (1926). https://doi.org/10.1038/118015a0
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DOI: https://doi.org/10.1038/118015a0