大兴安岭宏伟地区水系沉积物测量地球化学特征及找矿方向

大兴安岭地区富含火山热液型银铅锌钼多金属矿床。为了进一步探寻找矿潜力,以宏伟地区1∶5万水系沉积物地球化学测量数据为研究对象,采用标准差的方法提取异常下限并圈定单元素异常与组合异常,结合研究区内的地质特征对圈定的异常进行解释与评价。研究表明:Ag、Pb、Zn、Mo4种元素在研究区中相对富集,结合地质成矿理论对综合异常进行评序,并圈定12处综合异常,对HHS-3综合异常进行查证,推测该异常为甲2类的矿致异常。本次研究表明水系沉积物地球化学测量在该区具有较好的找矿效果,为研究区地质找矿奠定了基础。

Geochemical Characteristics and Prospecting Direction of the Hongwei-Xiongguan-Songheyi Dongshan Area in the Greater Xing’an Mountains, Heilongjiang Province

The Daxinganling area collided during the Late Paleozoic.The study area Hongwei-Xiongguan-Songheyi Dongshan area is located at the superimposed transition site of the Paleozoic paleo-Asian tectonic-metallogenic domain and the Mesozoic-Cenozoic Pacific Ocean tectonic-mineralization area.It is a good ore-forming fluid channel and has very good ore metallogenic geological conditions.The comprehensive research and metallogenic prediction of the geological background and geochemical characteristics of this area are carried out.It is believed that this area has good prospecting potential,and the prospecting area is circled.Suggestions for further prospecting work in this area are put forward.