定向岩芯构造分析及在金矿勘查中的运用

Structural analysis of oriented drill core and its application in gold exploration

系统测量定向岩芯中构造面的α角和β角,结合钻孔的方位角和钻孔倾角,通过赤平投影可以还原真实的构造面产状。通过穿过金矿体的定向岩芯的构造编录和系统分析,计算矿体中的主要含矿节理、含矿蚀变带等构造面的产状,并进行统计分析,可以了解矿化与各类构造之间的关系,计算矿体的空间产状,并推断主矿体的延伸等,为矿区的深部勘查设计提供依据。

Armed with the internal angle alpha and beta measured systemically from the oriented core, and with the azimuth and dip angle collected from down hole survey, the attitude of surface structure could he easily figured out by stereo net. By structural log and a- nalysis of the oriented core passing through the ore body, the attitude of these surface structures such as jointing contained auriferous sulfide and mineralized alteration belt could be calculated. Through the statistical analysis of these structural surfaces and its relation with mineralization, different kinds of structure could be distinguished, the attitude of ore body could be calculated and the extension of main ore body could be predicted. All the information provided the useful clues for the design of deep geologic explorations.