Message #175721

[Carolyn Silver]

Supporters

    * Southern hemisphere geologists such as DuToit, L. King, and S. W. Carey remained advocates of continental drift between the world wars, presumably because the geologic evidence (especially fossil fauna) for a single landmass of southern continents (Gondwana) was so strong.
    * A. Holmes (1931) - observed that the amount of heat emitted by volcanoes, could not account for the amount of heat discharged by radioactivity. Suggested that heat loss was better explained by mantle convection. Also suggested that convection currents could move continents. Jeffreys strongly disagreed with this hypothesis.