摘要
苏子沟地区位于辽吉裂谷带内,成矿地质条件良好,具备找矿潜力。基于该地区1∶5万水系沉积物分析数据,采用多重分形法对区内Au、Pb元素地球化学异常进行研究。结果表明,研究区内Au、Pb元素异常下限均远大于该区岩石化学丰度值,高变异系数表明元素具有较强的富集趋势。经异常查证,分形法圈定的异常符合实际情况,并显示出元素的分布特征和富集趋势。通过对元素异常的圈定,初步判断区内存在金、铅矿体的可能性较大,为该地区进一步找矿指明了方向。
Suzigou region of Liaoning-Jilin Rift Valley has good metallogenic conditions and prospecting potentials. Based on 1：50 000 stream sediments survey data in the study area, the paper studied Au and Pb geochemistry anomalies with multi-fractal method. The anomaly thresholds of Au and Pb are much higher than the chemical abundance value of the rock in study area. The high coeffi- cients of variation show a strong enrichment tendency of the elements. With anomaly inspection, threshold obtained with fractal method is consistent with practical situation, which also presents anomaly distribution and enrichment tendency of the elements. With the delin- eation of elemental anomalies, the initial judgment of the region believes that the study area is likely to host gold and lead ore bodies, which shows the further prospecting direction in this region.
出处
《地质学刊》
CAS
2017年第2期257-262,共6页
Journal of Geology
基金
中国地质调查局地质调查项目"辽宁大石桥-桓仁地区辽河群含矿性综合调查评价"(1212011120744)
关键词
分形法
水系沉积物
地球化学异常
辽东苏子沟地区
fractal method
stream sediment
geochemical anomaly
Suzigou area in eastern Liaoning
