Continental Drift, Plate Tectonics and Geomechanics
This paper briefly describes the major content and basis of Wegener's continental drift hypothesis and deals with the fact that, due to the discovery of the mid-ocean ridge and the ocean floor expansion during the geo-logical and geophysical survey on the basis of the continental drift hypothesis, researchers have explained the mechanism of continental tensional faulting and established the global plate tectonic theory, thus resulting in the revolution of modem geoscience thinking. Simultaneously with the emergence of the continental drift hypothesis, Li Siguang actively approached and dealt with the problem of continental crust horizontal movement and, in com-bination with the reality of China's mainland, developed the theory of intracontinental collision deformation, i.e., the geomechanic theory and method that included the global continental tectonic system. Li Siguang emphasized that geomechanics studies the phenomena of crustal movement and deformation on the basis of geology on one side and mechanics on the other side. Later, he extended the application of geomechanics to the aspects of re-sources and environment. This paper makes a thorough discussion on the relationships between Wegener's conti-nental drift hypothesis, global plate tectonic theory and geomechanics, expounds the practical significance and fore-sight significance of Li Siguang's geomechanic theory and method and puts forward the suggestion that we should attach great importance to and carry forward the valuable heritages that Li siguang left to us, deeply study Li Siguang's works and, in combination with new achievements of geological survey, enrich and develop his theory.
国家科技期刊平台
NSTL
万方数据
维普
