Model Experimentation of the Effect of Gravity on Tectonic Processes

It seems likely that many of the tectonic phenomena in the Earth's crust are generated by processes within the mantle. Our view of such a large-scale tectonic phenomenon as the evolution of orogenic belts consequently ought to reflect on the theorizing of the behaviour of the mantle. The author finds it therefore appropriate to present in this symposium some results from experimental model studies related to the origin of geosynclines and orogens. Some models simulating convection currents in the mantle are also discussed.