Modern Mining ›› 2023, Vol. 39 ›› Issue (4): 30-.
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WANG Lei
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Abstract: The spatial occurrence state of gold ore body in Longtan mining area is mainly controlled by SN direction fracture-fault system in the area. Through the analysis of the fracture-fault interspersed cutting relationship in the mining area,it is considered that the SN direction fracture-fault in the area is two groups of X-type torsional fractures with small intersection angle and nearly SN direction associated with the Cale⁃ donian cycle Chengongpai inverted anticline. Under the action of the NE-NNE direction tectonic stress in the Yanshan period,the X-type torsional fractures further expand and penetrate,becoming the ore-bearing structure of the mining area. The EW direction faults in the area were formed in the early Yanshan period and alternately developed with NE-NNE direction faults,mainly pre-mineralization faults. The late Yansha⁃ nian mineralization ended,showing strong fault activity,generating a series of NE-NNE and EW direction destructive fault structures.The fracture-fault structure in the area is characteried by multi-stage,compres⁃ sion-torsion-tension-torsion.
Key words: structure characteristics, structural development, gold mine
WANG Lei. Analysis of Geological Structure Characteristics and Formation Mechanism of Longtan Gold Deposit in Southern Jiangxi[J]. Modern Mining, 2023, 39(4): 30-.
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