Analysis of structural evolution and hydrocarbon accumulation in Shengbei Structural Zone using 3-D seismic data;

Characteristics of southern Xiaochangshan superunit granites in western Beishan tectonic belt, Xinjiang;

The early phase of it took place in the belt of concealed explosive breccia presenting ringlike distribution while the later phase of it happened in the northwest by west/northwest by north structural belt.

Ore-bearing breccias can be divided into complete-pipe and compound mineralizing types in the east part of north Huaiyang tectonic zone, in which the former type keeps certain distance from the hypabyssal rock, the latter one is accompanied by the hypabyssal rock in space.

On the basis of analysing drilling and logging data and geophysical profiles, nappe structures in north Huaiyang tectonic zone have been studied ,and the existence ,pattern , dynamic background and hydrocarbon significance of Indosinian nappe structures have also been discussed.