AN ANALYSIS OF PRESENT-DAY REGIONAL TECTONIC STRESS FIELD AND CRUSTAL MOVEMENT TREND IN CHINA

Tectonic stress field is here extended to cover, in addition, crustal defromation field, fault displacement field, deep crustal structures, as well as the factors that may have some influence on the stress field such as structural conditions, geophysical and geochemical conditions and properties of the crustal materials.All these are so closely interrelated that they form a system giving different responses to a crustal movement. Only an integrated, systematic analysis of the tectonic stress field can the trend of the present-day crustal movement be brought to light.Otherwise, what we may have achieved will be only partial expression of the movement.This paper approaches the problem in two steps:a respective analysis and zonation of the various fields mentioned above is first made which is followed by a discussion of the crustal movement trend in China.The results add some new data and knowledge to the present-day crustal movement in China, which may prove useful for the planning and construction of national economy and for disaster reduction and prevention.