Response Characteristics and Its Prospecting Signs of Geophysical Well Logging in Xiaotongjiabuzi Gold Deposit,Eastern Liaoning Province
Liu Dongming
Liang Mingxing
Feng Jie
Ou Yang
Yang Yi
Zhai Jinghong
Lin Zhenzhou
Gao Wenli
Abstract：Liaodong is an important gold producing area in China,and it has become a key research direction to achieve a new breakthrough in deep prospecting here.Geophysical method is the main technical means to discover and detect deep gold deposits.In order to finely characterize the stratigraphic structure of Qingchengzi ore concentration area,accurately reveal the geophysical anomalous characteristics of deep mineralized alteration zone,and establish the geophysical interpretation scale for deep prospecting,multi-parameter geophysical logging and borehole geophysical survey were carried out in ZK12-11 hole in Xiaotongjiabuzi gold mining area.Combined with drill core logging,the response characteristics of lithology and mineralized alteration zone of 300-990 m well section of the hole were analyzed by histogram and crossplot,and the drilling lithology profile and mineralized alteration layer were divided.The results show that the four parameters of natural gamma,apparent resistivity,magnetic susceptibility and polarizability can distinguish the main lithology of borehole,and can be used as the main basis for reconstructing the lithology profile of borehole.The content of pyrite in the pyritization layer is not high enough to cause the decrease of formation resistivity.Graphitization is the main factor causing the decrease of resistivity.The natural gamma high-low transition zone and the low resistivity and high polarization non-magnetic anomaly zone are the prospecting signs of geophysical logging for gold prospecting in Xiaotongjiabuzi gold deposit.Geophysical logging can effectively delineate favorable horizons for gold prospecting,and guide the deep prospecting work of gold deposit more accurately,which should be paid extensive attention.
Keywords：geophysical prospectingwell loggingXiaotongjiabuzigold depositlithological response characteristicsmineralized alteration response characteristicsprospecting signsore deposits
Publication Date：2024-03-15
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：15( 1066-1080 )