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证据权法在新疆卡拉麦里金矿带断层与金矿化空间定量评价中的应用

曹小红 弓小平 韩琼 孟和

曹小红, 弓小平, 韩琼, 等, 2019. 证据权法在新疆卡拉麦里金矿带断层与金矿化空间定量评价中的应用. 地质力学学报, 25 (S1): 157-162. DOI: 10.12090/j.issn.1006-6616.2019.25.S1.027
引用本文: 曹小红, 弓小平, 韩琼, 等, 2019. 证据权法在新疆卡拉麦里金矿带断层与金矿化空间定量评价中的应用. 地质力学学报, 25 (S1): 157-162. DOI: 10.12090/j.issn.1006-6616.2019.25.S1.027
CAO Xiaohong, GONG Xiaoping, HAN Qiong, et al., 2019. APPLICATION OF EVIDENCE WEIGHT METHOD IN QUANTITATIVE EVALUATION OF FAULTS AND GOLD MINERALIZATION IN KALAMAILI GOLD BELT, XINJIANG. Journal of Geomechanics, 25 (S1): 157-162. DOI: 10.12090/j.issn.1006-6616.2019.25.S1.027
Citation: CAO Xiaohong, GONG Xiaoping, HAN Qiong, et al., 2019. APPLICATION OF EVIDENCE WEIGHT METHOD IN QUANTITATIVE EVALUATION OF FAULTS AND GOLD MINERALIZATION IN KALAMAILI GOLD BELT, XINJIANG. Journal of Geomechanics, 25 (S1): 157-162. DOI: 10.12090/j.issn.1006-6616.2019.25.S1.027

证据权法在新疆卡拉麦里金矿带断层与金矿化空间定量评价中的应用

doi: 10.12090/j.issn.1006-6616.2019.25.S1.027
基金项目: 

国家自然科学基金项目 41462004

新疆维吾尔自治区教育厅高校科研计划项目 XJEDU2016S088

新疆维吾尔自治区"十三五"地质工程重点专业 20161812

详细信息
    作者简介:

    曹小红(1985-), 女, 硕士, 实验师, 从事地质教学工作。E-mail:512197696@qq.com

  • 中图分类号: P618.51

APPLICATION OF EVIDENCE WEIGHT METHOD IN QUANTITATIVE EVALUATION OF FAULTS AND GOLD MINERALIZATION IN KALAMAILI GOLD BELT, XINJIANG

  • 摘要: 新疆东准噶尔卡拉麦里金矿带是新疆重要的金成矿带之一,相关学者开展了大量的生产和科研工作,取得了丰硕的找矿成果,积累了大量的研究。近年来,随着向深部探测工作的兴起和成矿预测方法的不断成熟,由定性研究向定量研究成为一种必然选择。研究在以往科研成果综合研究的基础上,建立基于ArcGis平台的数据库,应用证据权法开展卡拉麦里金矿带断层与金矿化空间定量评价研究,研究表明断层距离和断层密度为重要的证据权因子,断层距离在0~1500 m范围内,成矿作用最强,随着距离的增大,成矿作用变弱。断层密度在0.26~0.66为中高有利成矿区域。该研究成果对卡拉麦里金矿带深部及外围的找矿工作具有重要意义。

     

  • 图  1  新疆卡拉麦里金矿带地质矿产简图

    1—新生界;2—白垩纪;3—侏罗纪;4—三叠纪;5—二叠纪;6—石炭纪;7—泥盆纪;8—志留纪;9—石炭纪花岗岩;10—石炭纪超镁铁质岩;11—金矿;12—铜矿

    Figure  1.  A brief map of geological minerals in the Kalamaili gold belt of Xinjiang

    图  2  断层密度与金矿成矿有利度分析结果图

    Figure  2.  Analysis of fault density and gold mineralization favorability

    图  3  断层距离与金矿成矿有利度分析结果图

    Figure  3.  Analysis of fault distance and gold mineralization favorability

    表  1  卡拉麦里金矿与断层密度空间关系定量评价表

    Table  1.   Quantitative evaluation table for spatial relationship between the Kalamaili gold deposit and fault density

    级别 面积/km2 单元数 矿床数 W+正权值 W-负权值 反差 学生化反差 综合权重
    0~0.13 22868 22868 4 -0.0002 6.3694 -6.3695 -0.4504 -2.281600
    0.13~0.26 3228 3228 11 1.0536 -2.2816 3.3352 6.4347 1.053600
    0.26~0.40 2490 2490 8 1.1721 -1.0915 2.2636 7.5416 1.053600
    0.40~0.53 2010 2010 10 1.3509 -0.7550 2.1059 7.8334 1.053600
    0.53~0.66 1238 1238 14 1.4893 -0.4617 1.9510 7.3406 1.053600
    0.66~0.80 961 961 4 1.1336 -0.1473 1.2809 3.8156 1.053600
    0.80~0.93 607 607 3 1.3034 -0.0953 1.3987 3.4602 1.053600
    0.93~1.06 330 330 2 1.5291 -0.0564 1.5855 3.0484 1.053600
    1.06~1.20 145 145 1 1.8800 -0.0298 1.9098 2.6396 1.053600
    1.20~1.33 35 35 1 2.8448 -0.0164 2.8612 2.7962 1.053600
    下载: 导出CSV

    表  2  卡拉麦里金矿与断层距离空间关系定量评价表

    Table  2.   Quantitative evaluation table of spatial relationship between the Kalamaili gold deposit and fault distance

    级别/单位 面积/km2 单元数 矿床数 W+正权值 W-负权值 反差 学生化反差
    0~500 5162 5162 28 -0.0002 5.5629 -5.5631 -0.3934
    500~1000 2618 2618 11 -0.2442 0.3514 -0.5956 -2.2619
    1000~1500 2016 2016 10 -0.3982 0.2722 -0.6704 -2.3920
    1500~2000 1435 1435 3 -0.8278 0.2700 -1.0978 -3.0238
    2000~2500 1286 1286 4 -0.9228 0.1923 -1.1151 -2.5840
    2500~3000 925 925 2 -1.6271 0.1579 -1.7850 -2.4794
    3000~3500 956 956 0 0.0000 0.0000 0.0000 0.0000
    3500~4000 774 774 0 0.0000 0.0000 0.0000 0.0000
    下载: 导出CSV

    表  3  卡拉麦里金矿与断层方向空间关系定量评价表

    Table  3.   Quantitative evaluation table for spatial relationship between the Kalamaili gold deposit and fault direction

    级别 面积/km2 单元数 矿床数 W+正权值 W-负权值 反差 学生化反差
    北(0-22.5) 2182 2182 12 -0.0002 5.5629 -5.5631 -0.3934
    北东 2403 2403 10 -0.0768 0.3655 -0.4424 -1.3613
    1077 1077 1 -0.1176 0.2284 -0.3460 -1.2757
    南东 700 700 2 -0.0382 0.0610 -0.0992 -0.3687
    2091 2091 11 -0.0204 0.0276 -0.0481 -0.1809
    南西 2465 2465 8 -0.1555 0.1085 -0.2640 -0.9737
    西 1313 1313 4 -0.1505 0.0530 -0.2035 -0.6621
    北西 765 765 2 -0.1177 0.0264 -0.1440 -0.4136
    北(337.5-360) 2176 2176 8 -0.0391 0.0064 -0.0455 -0.1192
    下载: 导出CSV
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