福建三明吉口矿区推覆构造特征与控煤作用

Nappe Structures and Coal-Controlled Influence of the Jikou Coalfield in Sanming,Fujian Province

根据矿区勘查和推覆构造研究资料,论述三明吉口矿区煤矿推覆构造特征与控煤作用,认为区内煤系地层为受推覆构造影响的"外来岩系"。以卷入地层及相关的岩体时代分析,认为区内拆离构造和推覆构造分别形成于印支期与燕山早期。

Based on the research results of the reconnaissance and nappe structures in the coalfield, the nappe characteristics and coal-controlled influence of the Jikou coalfield in Sanming are under discussion in the paper and it is considered that the coal-bearing rock in the surveyed area belongs to the exotic rock series affected by the nappe structures. According as the time analyses of the involved strata and interrelated terrane, it is inferred that the detachment structures and nappe structures take shapes between the Indosinian period and early Yanshanian stage.