青海沟里地区水系沉积物地球化学异常特征及找矿预测
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摘要
青海沟里地区是我国西北的重要金矿矿集区,为进一步探寻沟里地区的找矿潜力,以该地区1∶5万水系沉积物地球化学测量数据为研究对象,采用平均值±3倍标准差的方法提取异常下限并圈定单元素异常与综合异常,结合研究区内的地质特征对圈定的异常进行了解释与评价。在圈定找矿远景区之前,首先对研究区内德龙金矿床的水系沉积物地球化学结构特征与地质特征进行了剖析,认为北西向的断裂与Au、As组合异常是金的有效的找矿标志,并构建了地质-地球化学找矿模型,以此为指导圈定出热龙金矿找矿远景区;之后对成矿地质条件较好的、以铜为主的(HS01)综合异常进行了剖析,认为其有寻找铜多金属矿的潜力,圈定了龙洼卡鲁铜多金属矿找矿远景区。后续的异常查证工作中,在热龙找矿远景区内发现了金铅矿体,在龙洼卡鲁找矿远景区内发现了铜银矿体。本研究丰富了该区的矿产类型并为该区的找矿工作指明了新方向。
Gouli area is an important gold mineralization concentrated area in the northwest of China. To further explore the prospecting potential of the the geochemical survey data of stream sediments at the scale 1∶50 000 are taken as the research object. The single element anomaly and comprehensive anomaly of the study area are extracted by using mean ±3 times standard deviation. Before the dividing of the prospecting area, the geological-geochemical prospecting indicators in the study area were summarized by analyzing the stream sediments geochemical and geological characteristics of the Delong gold deposit in the area. It is believed that the north west fault and the combination of Au and As are an effective prospecting indicator of gold. Based on these indicators the Relong gold polymetallic prospecting area is determined. After that, by analyzing the comprehensive anomaly(HS01) with good ore-forming geological conditions, this study determines the Longwakalu cooper polymetallic prospecting area. In the subsequent abnormality verification work, a gold-lead ore body is discovered in the prospective area of the Relong prospecting area, and a copper-silver ore body is found in the Longwakalu area. The above study has enriched the mineral type and provided a new direction for prospecting in the study area.
Gouli area is an important gold mineralization concentrated area in the northwest of China. To further explore the prospecting potential of the the geochemical survey data of stream sediments at the scale 1∶50 000 are taken as the research object. The single element anomaly and comprehensive anomaly of the study area are extracted by using mean ±3 times standard deviation. Before the dividing of the prospecting area, the geological-geochemical prospecting indicators in the study area were summarized by analyzing the stream sediments geochemical and geological characteristics of the Delong gold deposit in the area. It is believed that the north west fault and the combination of Au and As are an effective prospecting indicator of gold. Based on these indicators the Relong gold polymetallic prospecting area is determined. After that, by analyzing the comprehensive anomaly(HS01) with good ore-forming geological conditions, this study determines the Longwakalu cooper polymetallic prospecting area. In the subsequent abnormality verification work, a gold-lead ore body is discovered in the prospective area of the Relong prospecting area, and a copper-silver ore body is found in the Longwakalu area. The above study has enriched the mineral type and provided a new direction for prospecting in the study area.
引文
[1] 马维明,王振东,张学德,等.青海都兰县沟里勘查区找矿潜力及瓶颈浅析[J].西部探矿工程,2016,28(2):134-137.
[2] 康维海.老区实现新突破新区取得新进展青海省有色地勘局探索找矿新格局[J].青海国土经略,2017,25(2):41-44.
[3] 潘亚茹.青海沟里地区遥感影像地学信息提取与融合[D].昆明:昆明理工大学,2014.
[4] 付乐兵,魏俊浩,谭俊,等.东昆仑沟里整装勘查区脉状金矿床多级构造控矿规律[J].矿物学报,2015,35(增刊1):388-389.
[5] 曹建辉,袁万明,郝娜娜,等.东昆仑沟里地区花岗岩年代学、岩石地球化学及其地球动力学意义[J].地质科技情报,2015,34(2):42-51.
[6] Xiong F,Ma C,Zhang J,et al.The origin of mafic microgranular enclaves and their host granodiorites from East Kunlun,Northern Qinghai-Tibet Plateau:Implications for magma mixing during subduction of Paleo-Tethyan lithosphere[J].Mineralogy and Petrology,2012,104(3/4):211-224.
[7] Matte P,Tapponnier P,Arnaud N,et al.Tectonics of Western Tibet,between the Tarim and the Indus[J].Earth and Planetary Science Letters,1996,142(3):311-330.
[8] 王晓云,张萱颖,马忠贤.沟里地区1∶2.5万水系沉积物测量应用效果对比分析[J].青海国土经略,2017,25(4):75-78.
[9] 崔晓亮,刘婷婷,王文恒,等.东昆仑布青山地区水系沉积物测量地球化学特征及找矿方向[J].物探与化探,2011,35(5):573-578.
[10] 翟玉林,魏俊浩,李艳军,等.青海大场金矿床地质地球化学找矿模型[J].地质科技情报,2015,34(6):100-107.
[11] 龚鹏,胡小梅,李娟,等.建立地质-地球化学找矿模型:以西藏甲玛铜多金属矿床为例[J].地质通报,2013,32(10):1601-1612.
[12] Cheng Q,Zhao P.Singularity theories and methods for characterizing mineralization processes and mapping geo-anomalies for mineral deposit prediction[J].Geoscience Frontiers,2011,2(1):67-79.
[13] Cheng Q.Mapping singularities with stream sediment geochemical data for prediction of undiscovered mineral deposits in Gejiu,Yunnan Province,China[J].Ore Geology Reviews,2007,32(1/2):314-324.
[14] 赵旭,付乐兵,魏俊浩,等.东昆仑按纳格角闪辉长岩体地球化学特征及其对古特提斯洋演化的制约[J].地球科学,2018,43(2):354-370.
[15] Chen J,Wei J,Fu L,et al.Multiple sources of the Early Mesozoic Gouli batholith,eastern Kunlun orogenic belt,northern Tibetan Plateau:Linking continental crustal growth with oceanic subduction[J].Lithos,2017,292/293:161-178.
[16] 陈加杰.东昆仑造山带东端沟里地区构造岩浆演化与金成矿[D].武汉:中国地质大学(武汉),2018.
[17] 李小兵.东昆仑(东段)东昆中构造混杂岩带构造变形及构造演化特征[D].西安:长安大学,2015.
[18] 陈能松,何蕾,王国灿,等.东昆仑造山带早古生代变质峰期和逆冲构造变形年代的精确限定[J].科学通报,2002,52(8):628-631.
[19] 刘颜,付乐兵,王凤林,等.东昆仑东段坑得弄舍多金属矿床Pb-Zn与Au-Ag成矿关系研究[J].大地构造与成矿学,2018,42(3):480-493.
[20] 张照伟,王驰源,钱兵,等.东昆仑志留纪辉长岩地球化学特征及与铜镍成矿关系探讨[J].岩石学报,2018,34(8):2262-2274.
[21] He D,Dong Y,Liu X,et al.Tectono-thermal events in East Kunlun,Northern Tibetan Plateau:Evidence from zircon U-Pb geochronology[J].Gondwana Research,2016,30:179-190.
[22] 张萱颖.青海省都兰县德龙地区矿床特征及靶区优选[D].北京:中国地质大学(北京),2016.
[23] 王凤林,肖小强,陈世顺.青海沟里地区金矿地质特征及找矿前景[J].黄金科学技术,2011,19(4):45-48.
[24] 青海省有色地质勘查局八队.青海省都兰县沟里地区1∶5万矿产地质、水系沉积物测量综合调查项目成果报告[R].西宁:青海省有色地质勘查局八队,2011.
[25] 刘邦定,陈新跃,罗小亚,等.湘南坪宝地区水系沉积物地球化学特征及找矿靶区预测[J].地质与勘探,2015,51(4):722-730.
[26] 李鹏宇,石文杰,魏俊浩,等.青海省兴海县某地区铜多金属找矿潜力评价:基于1∶5万土壤化探数据处理与异常信息提取[J].物探与化探,2017,41(2):194-202.
[27] 戴慧敏,宫传东,鲍庆中,等.区域化探数据处理中几种异常下限确定方法的对比:以内蒙古查巴奇地区水系沉积物为例[J].物探与化探,2010,34(6):782-786.
[28] Singer D A,Kouda R.Some simple guides to finding useful information in exploration geochemical data[J].Natural Resources Research,2001,10(2):137-147.
[29] 王发明,翟玉林,李艳军,等.青海大场金矿田北缘灭格滩矿区土壤地球化学异常信息提取及找矿预测[J].地质科技情报,2015,34(5):127-133.
[30] 施海鹏,魏俊浩,赵少卿,等.宁夏贺兰山北段1∶5万化探数据的含量-面积分形异常特征及找矿预测[J].地质科技情报,2015,34(3):71-79.
[31] Xie S,Cheng Q,Xing X,et al.Geochemical multifractal distribution patterns in sediments from ordered streams[J].Geoderma,2010,160(1):36-46.
[32] Vilà M,Martínez-Lladó X.Approaching earth surface geochemical variability from representative samples of geological units:The Congost River Basin case study[J].Journal of Geochemical Exploration,2015,148:79-95.
[2] 康维海.老区实现新突破新区取得新进展青海省有色地勘局探索找矿新格局[J].青海国土经略,2017,25(2):41-44.
[3] 潘亚茹.青海沟里地区遥感影像地学信息提取与融合[D].昆明:昆明理工大学,2014.
[4] 付乐兵,魏俊浩,谭俊,等.东昆仑沟里整装勘查区脉状金矿床多级构造控矿规律[J].矿物学报,2015,35(增刊1):388-389.
[5] 曹建辉,袁万明,郝娜娜,等.东昆仑沟里地区花岗岩年代学、岩石地球化学及其地球动力学意义[J].地质科技情报,2015,34(2):42-51.
[6] Xiong F,Ma C,Zhang J,et al.The origin of mafic microgranular enclaves and their host granodiorites from East Kunlun,Northern Qinghai-Tibet Plateau:Implications for magma mixing during subduction of Paleo-Tethyan lithosphere[J].Mineralogy and Petrology,2012,104(3/4):211-224.
[7] Matte P,Tapponnier P,Arnaud N,et al.Tectonics of Western Tibet,between the Tarim and the Indus[J].Earth and Planetary Science Letters,1996,142(3):311-330.
[8] 王晓云,张萱颖,马忠贤.沟里地区1∶2.5万水系沉积物测量应用效果对比分析[J].青海国土经略,2017,25(4):75-78.
[9] 崔晓亮,刘婷婷,王文恒,等.东昆仑布青山地区水系沉积物测量地球化学特征及找矿方向[J].物探与化探,2011,35(5):573-578.
[10] 翟玉林,魏俊浩,李艳军,等.青海大场金矿床地质地球化学找矿模型[J].地质科技情报,2015,34(6):100-107.
[11] 龚鹏,胡小梅,李娟,等.建立地质-地球化学找矿模型:以西藏甲玛铜多金属矿床为例[J].地质通报,2013,32(10):1601-1612.
[12] Cheng Q,Zhao P.Singularity theories and methods for characterizing mineralization processes and mapping geo-anomalies for mineral deposit prediction[J].Geoscience Frontiers,2011,2(1):67-79.
[13] Cheng Q.Mapping singularities with stream sediment geochemical data for prediction of undiscovered mineral deposits in Gejiu,Yunnan Province,China[J].Ore Geology Reviews,2007,32(1/2):314-324.
[14] 赵旭,付乐兵,魏俊浩,等.东昆仑按纳格角闪辉长岩体地球化学特征及其对古特提斯洋演化的制约[J].地球科学,2018,43(2):354-370.
[15] Chen J,Wei J,Fu L,et al.Multiple sources of the Early Mesozoic Gouli batholith,eastern Kunlun orogenic belt,northern Tibetan Plateau:Linking continental crustal growth with oceanic subduction[J].Lithos,2017,292/293:161-178.
[16] 陈加杰.东昆仑造山带东端沟里地区构造岩浆演化与金成矿[D].武汉:中国地质大学(武汉),2018.
[17] 李小兵.东昆仑(东段)东昆中构造混杂岩带构造变形及构造演化特征[D].西安:长安大学,2015.
[18] 陈能松,何蕾,王国灿,等.东昆仑造山带早古生代变质峰期和逆冲构造变形年代的精确限定[J].科学通报,2002,52(8):628-631.
[19] 刘颜,付乐兵,王凤林,等.东昆仑东段坑得弄舍多金属矿床Pb-Zn与Au-Ag成矿关系研究[J].大地构造与成矿学,2018,42(3):480-493.
[20] 张照伟,王驰源,钱兵,等.东昆仑志留纪辉长岩地球化学特征及与铜镍成矿关系探讨[J].岩石学报,2018,34(8):2262-2274.
[21] He D,Dong Y,Liu X,et al.Tectono-thermal events in East Kunlun,Northern Tibetan Plateau:Evidence from zircon U-Pb geochronology[J].Gondwana Research,2016,30:179-190.
[22] 张萱颖.青海省都兰县德龙地区矿床特征及靶区优选[D].北京:中国地质大学(北京),2016.
[23] 王凤林,肖小强,陈世顺.青海沟里地区金矿地质特征及找矿前景[J].黄金科学技术,2011,19(4):45-48.
[24] 青海省有色地质勘查局八队.青海省都兰县沟里地区1∶5万矿产地质、水系沉积物测量综合调查项目成果报告[R].西宁:青海省有色地质勘查局八队,2011.
[25] 刘邦定,陈新跃,罗小亚,等.湘南坪宝地区水系沉积物地球化学特征及找矿靶区预测[J].地质与勘探,2015,51(4):722-730.
[26] 李鹏宇,石文杰,魏俊浩,等.青海省兴海县某地区铜多金属找矿潜力评价:基于1∶5万土壤化探数据处理与异常信息提取[J].物探与化探,2017,41(2):194-202.
[27] 戴慧敏,宫传东,鲍庆中,等.区域化探数据处理中几种异常下限确定方法的对比:以内蒙古查巴奇地区水系沉积物为例[J].物探与化探,2010,34(6):782-786.
[28] Singer D A,Kouda R.Some simple guides to finding useful information in exploration geochemical data[J].Natural Resources Research,2001,10(2):137-147.
[29] 王发明,翟玉林,李艳军,等.青海大场金矿田北缘灭格滩矿区土壤地球化学异常信息提取及找矿预测[J].地质科技情报,2015,34(5):127-133.
[30] 施海鹏,魏俊浩,赵少卿,等.宁夏贺兰山北段1∶5万化探数据的含量-面积分形异常特征及找矿预测[J].地质科技情报,2015,34(3):71-79.
[31] Xie S,Cheng Q,Xing X,et al.Geochemical multifractal distribution patterns in sediments from ordered streams[J].Geoderma,2010,160(1):36-46.
[32] Vilà M,Martínez-Lladó X.Approaching earth surface geochemical variability from representative samples of geological units:The Congost River Basin case study[J].Journal of Geochemical Exploration,2015,148:79-95.