摘要
斗南锰矿带是滇东南地区重要的锰矿成矿带,其在地理位置上与明苏断裂(“S”形断裂)基本重合,成矿带上分布有岩子脚、斗南、大箐、老乌、龙潭等一批大、中型锰矿床;前人对“S”形断裂的专题研究较少,仅仅是从锰矿成矿机制方面进行分析、评价。通过对平远斗南锰矿地区进行矿产地质调查工作,及对坝心地段做地质、物探调查工作,结合对该断裂带相关资料的研究分析,认为“S”形断裂可能在不同区域位置不是实质性的同生断裂,主体表现是推覆断裂的形迹,局部有可能存在推覆断裂与同生断裂在地表重合。同时结合工作中的一些新认识,对锰矿深部成矿地质条件进行梳理总结和探讨,希望对本地区锰矿研究和找矿突破提供有价值的参考。
Dounan manganese ore belt is an important manganese ore-forming belt in the southeastern region of Yunnan.Its geographical location basically overlaps with Mingsu fault(S-shaped fault).There are a number of large and medium-sized manganese deposits distributed on the ore-forming belt,such as Yanzijiao,Dounan,Daqing,Laowu and Longtan.Previous studies on S-shaped fault have been limited with only an analysis and evaluation of the ore-forming mechanism of manganese deposits.Through conducting mineral geological surveys in the Dounan manganese mine area of Pingyuan,as well as geological and geophysical surveys in the dam core area,we have combined with research and analysis of relevant data on the fault zone.It is believed that the S shaped fault may not be a substantial contemporaneous fault in different regional positions,but rather a trace of a thrust fault.There may be local overlapping of thrust faults and contemporaneous faults on the surface.At the same time,combined with some new insights from work,this paper summarizes and discusses the geological conditions for deep mineralization of manganese deposits.We are hoping to provide valuable references for the research and exploration of manganese deposits in the local area.
作者
袁雄
杨朋
蒋型义
李学志
吴继兵
YUAN Xiong;YANG Peng;JIANG Xingyi;LI Xuezhi;WU jibing(Central South Geological Survey Institute of China Metallurgical Geology Bureau,Wuhan,Hubei 430080,China;China Metallurgical Geology Bureau of Geological Prospecting Institute of Guangxi,Nanning,Guangxi 530022,China;Centralsouth Bureau of China Metallurgical Geology Bureau,Wuhan,Hubei 430035,China)
出处
《中国锰业》
2024年第1期19-24,共6页
China Manganese Industry
基金
中国地质调查局项目(编号:DD20160032)。
关键词
斗南锰矿
“S”形断裂
地质调查
物探
同生断裂
Dounan manganese ore
S-shaped fracture
Geological survey
Geophysical exploration
Syngenetic fracture
