GRAVITY TECTONICS AND THE ORIGIN OF LOCAL STRUCTURES IN THE EAST CHINA SEDIMENTARY BASINS
Tan Shidian Geophysical Exploration Bureau, Ministry of Petroleum Industry
The East China sedimentary basins are believed to be formed by extension rifting simultaneously with the process of uplifting, subsiding, faulting and deposition. Controlled by normal faults(growth faults), they assume the general character of graben-horst or semigraben-semihorst. No apparent compression fold can be found in these basins, A classification of local structures produced by gravity movements, both lateral and vertical, is given in reflection of the influence of gravity on the formation of different types of structures.