摘要
吉林中部环形构造是中生代形成与演化的热点构造。这个环形构造主要由外环带的环形断陷火山含煤盆地,中心区的断焰火山含煤盆地和火山机构,以及呈现环带状分布的花岗岩成因系列等部分组成,其形态呈现圆形,直径270km。 吉林中部环形构造控制外生煤、油气矿床、内生多金属和金矿床的形成和分布规律,从而为这些矿产资源的预测提供了可靠的地质依据,并获得实际效果。
The circular struture of central Jilin is a thermal point which formed and evolved in Mesozojc. This circular structure is mainly composed of circular faulted coal-bearing volcanic basins in margin belt, faulted coal-bearing volcanic basins and edifices in centre,and genetic series of granite distributed circularly. This structure occurs as the shape of a circle and has a diameter of 270 km. The circular structure of central Jilin controls the formation and distribution of exogenic coal, oil-gas deposits as well as endogenic polymetallic and gold deposits. So the reliable geologic bases have been provided for the prognosis of those kinds of ore resource, and practical results have been achieved.
关键词
环形构造
热点构造
控矿作用
circular structure,thermal point structure,ore controlting
