江西省信丰县铁石口地区地质特征

Geologic Feature of Tieshikou Area,Xinfeng County,Jiangxi Province

为给地质找矿和工程建设提供基础地质资料,对江西省信丰县铁石口地区进行了地质资料分析和野外地质调查。区内地层分布较为齐全,老地层和红层分布最为广泛,其中二叠系龙潭组有煤层出露,船山组和长兴组灰岩较为发育;区内构造较为复杂,向斜和推覆构造为区内主要构造,其中推覆构造上部主要为岩浆岩,构造下部见煤系地层;区内岩浆岩大面积出露,岩性主要为黑云斜长花岗岩,地表风化较为严重。

Based on the analysis of geological datum and field geological survey of Tieshikou area, Xinfeng County, Jiangxi Province, the authors learn that the distribution of strata in the area is relatively complete, and the old stratum and red strata are the most widely distributed, of which the Longtan Formation of the Permian is exposed, the Chuanshan Formation and the Changxing Formation limestone are relatively developed. The structure in the area is relatively complex, and the syncline and nappe structures are the main structures in the area. The upper part of the nappe structure is mainly magmatic rock, and the lower part of the structure is seen in the coal seam. The magmatic rocks in the area are exposed in a large area, and the lithology is mainly black cloud plagiogranite, and the surface weathering is more serious, which is a favorable area for rare earth mineralization.