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The AAPG/Datapages Combined Publications Database
AAPG Special Volumes
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The two fundamental premises on which Wegener's displacement theory is based, namely, (1) the flotation of continents of sial on an underlying viscous layer of sima, and (2) the displacement of the continental sial by tangential forces, are both conceded by geologists. The disagreement is largely in the application of these premises to the solution of earth problems. Wegener makes a strong case on circumstantial evidence. But his reasoning is not wholly convincing. Despite objections raised to the theory, it possesses a great degree of probability and is supported by considerable evidence. The difficulties between Wegener and his opponents are largely because of disagreement as to the facts observed.
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