双频激电法在青海大灶火沟—黑刺沟金矿区勘查中的应用
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摘要
在对大灶火沟—黑刺沟金矿区地质特征和矿床地质特征进行探讨的基础上,分析岩(矿)石地球物理特征,开展双频激电法地球物理测量工作。研究表明,矿区范围内北西西向断裂构造控矿、控岩特征明显,围岩蚀变中黄铁矿化、褐铁矿化和硅化与金成矿关系密切;矿致与非矿致激电异常信息明确,具备双频激电法圈定含矿岩层的地球物理前提。本次共圈定激电异常3处:JD1异常由含碳质板岩引起;JD2异常形态较好并具有一定的规模,经验证为矿致异常,是本区的找矿重点部位;JD3异常呈串珠状,由黄铁矿化石英砂岩引起,应重点关注。
Based on discussion about the characteristics of the geology and deposits in Dazaohuogou-Heicigou Gold District,the paper analyzed the geophysical characteristics of rock(ores) and carried out the geophysical exploration with dual-frequency induced polarization method.The results showed that NWW faults obviously controlled the ore bodies and formations,and the wall-rock alterations of pyrite,lignite and silicification were closely related to gold mineralization; the anomalies of induced polarization were explicit between ore and non-ore,and the geophysical precondition to delineate ore-bearing strata with dual-frequency induced polarization method was present.The paper circled3 anomalies.The JD1 anomaly was caused by carbonaceous slates; the shape and scale of the JD2 anomaly were better,and it was ore-caused anomalies by the confirmation with drilling hole,making JD2 the key prospecting area; The JD3 anomaly caused by pyritized fossil sandstone was moniliform and deserved more attention.
Based on discussion about the characteristics of the geology and deposits in Dazaohuogou-Heicigou Gold District,the paper analyzed the geophysical characteristics of rock(ores) and carried out the geophysical exploration with dual-frequency induced polarization method.The results showed that NWW faults obviously controlled the ore bodies and formations,and the wall-rock alterations of pyrite,lignite and silicification were closely related to gold mineralization; the anomalies of induced polarization were explicit between ore and non-ore,and the geophysical precondition to delineate ore-bearing strata with dual-frequency induced polarization method was present.The paper circled3 anomalies.The JD1 anomaly was caused by carbonaceous slates; the shape and scale of the JD2 anomaly were better,and it was ore-caused anomalies by the confirmation with drilling hole,making JD2 the key prospecting area; The JD3 anomaly caused by pyritized fossil sandstone was moniliform and deserved more attention.
引文
[1]韩光.青海东昆仑黑海北地区金成矿地质特征研究[D].北京:中国地质大学(北京),2013.
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[4]刘小花.青海省格尔木黑刺沟金成矿特征与找矿方向分析[D].北京:中国地质大学(北京),2013.
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[8]刘达龙.双频激电法在浙江省常山县苦麻岭地区钨、锡、钼多金属萤石矿勘查中的应用研究[D].太原:太原理工大学,2011.
[2]王泰山,鲁海峰,张尧,等.青海省格尔木二道沟白钨矿床地质特征初析[J].中国钨业,2016,31(4):14-20.
[3]康继祖,许贝贝,薛万文.青海昆仑河地区钨锡成矿特征及与早泥盆世花岗岩的关系[J].中国矿业,2014,23(12):71-73,98.
[4]刘小花.青海省格尔木黑刺沟金成矿特征与找矿方向分析[D].北京:中国地质大学(北京),2013.
[5]何继善.双频激电法[M].北京:高等教育出版社,2005:1-20.
[6]刘良志,孙清钟,赵智能.双频激电法在辽宁某金矿勘查中的应用[J].东华理工大学学报(自然科学版),2012,35(4):329-334.
[7]向晓松,贾继标.双频激电法在新疆金沙滩金矿勘查中的应用[J].矿产勘查,2014,5(1):53-57.
[8]刘达龙.双频激电法在浙江省常山县苦麻岭地区钨、锡、钼多金属萤石矿勘查中的应用研究[D].太原:太原理工大学,2011.