赵立志,李生虎,田滔.1∶2.5万地球化学测量法在青海和洛佳地区金多金属矿找矿中的应用[J].矿产勘查,2018,9(5):947-957 |
1∶2.5万地球化学测量法在青海和洛佳地区金多金属矿找矿中的应用 |
Application of 1∶25000 geochemical survey to polymetallic prospecting in Heluojia area of Dulan county |
投稿时间:2018-01-23 |
DOI: |
中文关键词: 地球化学测量 地质特征 金多金属矿 找矿前景 和洛佳 |
英文关键词: geochemical survey,geological characteristics,gold polymetallic ore body,prospecting prospect,Heluojia |
基金项目:2015年青海省地质勘查基金项目(编号:青国土资矿[2015]121号)资助。 |
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中文摘要: |
近年来随着1∶2.5万地球化学测量新方法在东昆仑成矿带内找矿工作方面的广泛应用,圈定了大量具有找矿价值的地球化学异常。位于东昆仑南坡俯冲碰撞杂岩带(KSPZ)的和洛佳地区,以分布大规模中三叠世花岗岩类为主要地质特征。通过1∶2.5万地球化学测量,圈定一批以Au、Cu、Pb、Zn、Ag等为元素组合的综合异常,具元素套合好、浓度分带明显、峰值高、面积和规模大等特征,为找矿工作提供了有利的地球化学依据。经过地质草测及地表工程揭露等工作,发现金、铅、锌、银矿化破碎蚀变带9条,达到边界及工业品位的铅锌矿(化)体2条,金多金属矿(化)体2条。充分说明1∶2.5万地球化学测量方法在类似的岩浆岩广泛分布区具有良好的找矿突破作用。 |
英文摘要: |
In recent years,The new method of 1∶25000 Geochemical survey has been widely used in ore prospecting in East Kunlun metallogenic belt, A large number of geochemical anomalies which have prospecting value have been founded.The area is located in the East Kunlun middle Neoproterozoic-early Paleozoic suture zone and the East Kunlun middle magma arc belt,Which the main geological features is that the middle triassic granites are distributed in large scale.We selected a series of regional geochemical element composite anomalies with Au, Cu, Pb, Zn, Ag and so on.through 1∶25000 geochemical survey.These composite anomalies have the characteristics of good elements nesting,obvious concentration bands,highpeak,large area and size,which provide a favorable geochemical basis for prospecting.We found nine rock altered crush zones of gold, lead, zinc and silver mineralized after geology preliminary survey and geological engineering work exposed surface, 2 pieces of lead-zinc ore body that reaches the boundary and industrial grade, 2 gold polymetallic ore bodies.This sufficiently indicates that the 1:25000 Geochemical survey method has a good ore finding breakthrough in the extensive distribution area of similar magmatic rocks. |
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