Fisher, Osmond (1817–1914) An Anglican clergyman, Fisher was the author of the first textbook on geophysics: The Physics of the Earth's Crust(1881). He argued that the Earth had a thin crust, and that convection currents in the fluid interior were the cause of mountain building, rifts, etc. He postulated that the Moon had been torn from the Pacific, causing the continents to be pulled apart.
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