Abstract:

In the tectonic evolution of Meso-Cenozoic oil and gas-bearing basins in Eastern China,the diapirism,by which oil and gas structural traps are formed,are quite obvious.This paper will focus on the mechanism of salt and mud diapiric structural traps intruded at low temperature.In the meantime we will preliminarily probe the possibility of the existence of magmatic diapiric structures which are intruded at high temperature.It is emphasized that the distribution of soft mudstone are obviously much wider than that of salt and gypsum in the eastern basins of China,therefore,the diapirism of mudstone should be paid more attention to.