...: "The overwhelming evidence of innumerable exposures of contacts between intruded rock masses and wall rocks of different kinds shows that, in the greater...the effects claimed by the hypothesis mentioned." Also Harker 2 says, with reference to the assimilation hypothesis: "The difficulties — mechanical,...

...exposed to view, the blending by melting and solution of wall rock and molten magma has not t ¿Icen place to any considerable extent. Dikes of granite...by the granite. From this we may conclude that in siich parts of the lithosphère the intruded magmas were not hot enough to produce the effects claimed...