DU TOIT, Alex L.
Our Wandering Continents.
An Hypothesis of Continental Drifting.
First edition, first impression of “one of the most important geological books of the twentieth century” (Nisbet, Living Earth, p. 147). Du Toit, a South African geologist, presented firm evidence from palaeontology, sedimentology, glaciation and rock types in order to develop Alfred Wegener’s still-controversial theory of continental drift, originally proposed in 1912. Du Toit notably contrasted the glacial deposits of Gondwana with coal deposits of the same age found in the continents of the Northern Hemisphere. “To resolve this apparent climatological paradox, he moved the Gondwana continents together such that the coal deposits were located at the equator. He named this northern landmass Laurasia. It consisted of present-day North America, Greenland, Europe, and Asia (except for India, which was part of Gondwana)” (Monroe and Wicander, eds, The Changing Earth, p. 29).
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Octavo. Original red cloth over flexible boards, spine lettered in gilt, blind frame to front board. With the dust jacket. 48 diagrams to the text, 1 folding. Spine gently rolled, extremities lightly bumped. A very good copy in the toned and slightly rubbed dust jacket with a few nicks at spine-ends and a short closed tear to the head of the front panel.