Trend Surface Analysis of Main Ore Veins with Applications in Mineral Resources Prediction in Xiaoqinling Gold Ore Field
-
摘要: 小秦岭石英脉型金矿田是我国重要的金矿富集区, 区内一些重要矿山已逐渐成为危机矿山, 深部找矿是当务之急.运用趋势面分析法对3个典型东西向南倾矿脉的矿体厚度及品位进行处理, 分析了断裂构造控矿特征及矿化富集规律.结果表明: 东西向矿脉主要向南西侧伏; 控矿断裂具有由南西向北东斜上左行逆冲的活动性质; 多阶段矿化具有"Ⅰ阶段成脉、Ⅱ阶段金矿化、Ⅲ阶段金铅叠加"的过程; 由矿体侧伏与断裂产状波状起伏联合控制的近平行等间距展布的2组结构线的交汇部位是矿化富集地段; 据此指出了各矿脉深部找矿预测的主要方向.Abstract: It is urgent for us to undertake deep prospecting in Xiaoqinling quartz vein type gold ore field, an important gold enrichment area in China where many famous mines are becoming crisis mines gradually. Trend surface analysis of ore veins can intuitively reflect regional and local trends of geological variables, which can be used for studying ore-controlling structure features and guiding deep prospecting. By the trend surface analysis on ore body thickness, Au and Pb grades of three typical ore veins, this paper presents the following mineralization enrichment rules and fault ore-controlling features found in the study. The main ore veins strike EW and are pitched to southwest. Ore-controlling fault thrusts from SW to NE obliquely with leftward contortion. Multistage mineralization is featured with three stages in which veins formed primarily in the first stage, Au mineralized strongly in the second stage and Au-Pb mineralization superposed in the third stage. Controlled jointly by orebody plunging direction and fault wavelike occurrence, the intersectional parts of two structure lines distributed proximal parallel and equidistantly are advantageous mineralization enrichment areas, which are the promising for future deep prospecting in these ore veins.
-
Key words:
- trend surface analysis /
- deep prospecting /
- quartz vein type gold deposit /
- ore deposits /
- fracture /
- Xiaoqinling
-
图 1 小秦岭金矿田构造纲要及主要矿脉分布略图(据颜正信等(2007)修编)
1.中生代黑云母二长花岗岩；2.下元古代角闪石二长花岗岩；3.背斜轴；4.向斜轴；5.典型矿床；6.典型矿脉及编号；7.金矿带；8.太华群
Fig. 1. Tectonic outline and main ore-vein distribution map of Xiaoqinling gold ore field
图 2 东闯金矿2号勘探线剖面简图
1.条纹条痕状角闪斜长片麻岩；2.斜长角闪片麻岩；3.辉绿岩脉；4.石英脉、糜棱岩带；5.金铅矿体；6.探槽及编号；7.老硐及编号；8.钻孔及编号；9.沿脉平硐及编号
Fig. 2. No.2 exploratory profiles sketch of Dongchuang gold deposit
图 3 典型矿脉3个阶段矿化叠加特征
a.杨砦峪金矿980 m中段S60脉；b.东桐峪金矿600 m中段Q10脉
Fig. 3. Triple mineralizational stacking characterstics of typical veins
图 4 东闯金矿S507脉矿体厚度、Au(Pb)品位等值线图、三次趋势图及剩余值等值线图
a.矿体厚度等值线; b.矿体厚度三次趋势值; c.矿体厚度三次趋势剩余值; d.金品位等值线﹔e.金品位三次趋势值，f.金品位三次趋势剩余值﹔g.铅品位等值线: h.铅品位三次趋势值: i.铅品位三次趋势剩余值
Fig. 4. Isoline, cubic trend values and residual values chart of orebody thickness, gold and lead grades of No.507 vein in Dongchuang gold deposit
图 5 杨砦峪金矿S60脉矿体厚度、Au品位等值线图、三次趋势图及剩余值等值线图
a.矿体厚度等值线；b.矿体厚度三次趋势值；c.矿体厚度三次趋势剩余值；d.金品位等值线；e.金品位三次趋势值；f.金品位三次趋势剩余值
Fig. 5. Isoline, cubic trend values and residual values chart of orebody thickness, gold and lead grades of No.S60 vein in Yangzhaiyu gold deposit
-
Chao, Y., Zhu, W.H., 1994. An Understanding for Geometric Shape and Ore-Control Regularity of Vein-Bearing Faulted Structure Belts in Gold Orefield, Xiaoqinling Region. Geology of Shaanxi, 12(2): 1-13 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-SXDY199402000.htm Chen, S.Y., Gao, J.G., 2005. Trend Surface Analysis & Deep Prediction of Kuangshanchang Ore-Block in Huize Lead-Zinc Deposit. Yunnan Geology, 24(4): 442-449 (in Chinese with English abstract). Deng, Z.L., Jiang, H.N., 1984. Composite of Structural Systems and Its Trend Surface Analysis in Xianli Region, Shanxi Province. Earth Science—Journal of Wuhan College of Geology, 9(2): 53-63 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-DQKX198402007.htm Feng, J.Z., 2009. Ore-Controlling Structure and Model in Xiaoqinling Gold Deposit, Henan. Mineral Resources and Geology, 23(4): 302-307 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-KCYD200904002.htm Hu, Y.M., 1984. Some Examples in the Interpretation of Tectonic Development Relationships by Using Trend Analysis. In: Sun, X.R., ed., Bulletin of Yichang Institute of Geology and Mineral Resources, Chinese Academy of Geological Sciences (8). Geological Publishing House, Beijing, 71-78 (in Chinese with English abstract). Lei, S.H., 1983. Trend Surface Analysis of Ore Controlling Structure and Finite Element Methodological Numerical Simulation in Tongguanshan Copper Deposit. Journal of Hebei College of Geology, 6(1): 30-43 (in Chinese). Tan, T.L., Sheng, J.H., Jia, J.Y., et al., 1995. Statistic Analysis of Geochemical Elements and Deep Metallogenic Forecasting of Wenyu Gold Deposit. Journal of East China Geological Institute, 18(4): 353-360 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-HDDZ504.008.htm Wang, K.Y., Fan, Y.X., Gao, Q.B., 1997. Mineralization Features and Regularities of Ore-Controlling by Fault of Vein No. 505 in Wenyu Gold Deposit. Journal of Precious Metallic Geology, 6(4): 270-277 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTotal-GJSD704.003.htm Xie, R.J., Lu, Z.X., 1987. Deposit Geological Characters and Analysis on Mineralization Rule of No. 505 Vein of Wenyu Gold Deposit in Lingbao, Henan Province. Earth Science—Journal of Wuhan College of Geology, 12(5): 476 (in Chinese). Xu, K.Y., 1987. Features of the Vein (Ore)-Controlled Structure on Xiao Qinling Gold Ore Field. Geology of Shaanxi, 5(2): 22-27 (in Chinese with English abstract). Xu, Y.B., Fan, Y.X., 2003. Study on Structural Ore-Controlling Regularity of Wenyu Gold Deposit, Henan Province. Geology and Prospecting, 39(5): 30-34 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-DZKT200305007.htm Yan, Z.X., Sun, W.Z., Xue, C., 2007. Ore-Controlling Structure Rule and Blind Ore-Prospecting of Medium-Deep Part in Xiaoqinling Gold Orefield. Gold, 28(12): 17-21 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-HJZZ200712006.htm Yang, X.Y., Wang, K.R., Sun, M.R., 1996. The Trend Surface Analysis of Ore Body Distribution and Its Relation with the Ore-Controlling Structures in Shaxi Porphyry Copper Deposit, Anhui Province. Geological Journal of China Universities, 2(3): 273-283 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-GXDX603.002.htm Yang, Z., Min, H.L., Ji, A., et al., 2009. Study of Ore-Controlling Structure and Ore-Body Location in Daye Fe Deposit Based on Trend Surface Analysis. Metal Mine, 38(11): 81-85 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-JSKS200911023.htm Zeng, Q.F., Lei, S.H., 1983. Some Questions of Mineral Structure. Geology and Prospecting, 19(3): 5-14 (in Chinese). Zhang, H.W., Chen, X.H., Hu, Z.F., 2000. Tendency Plane Analysis Method Used in Active Fault Research. Journal of Liaoning Technical University (Natural Science), 19(3): 225-228 (in Chinese with English abstract). http://search.cnki.net/down/default.aspx?filename=FXKY200003000&dbcode=CJFD&year=2000&dflag=pdfdown 晁援, 朱文怀, 1994. 对小秦岭金矿田含脉断裂构造带的几何形态及控矿规律的认识. 陕西地质, 12(2): 1-13. https://www.cnki.com.cn/Article/CJFDTOTAL-SXDY199402000.htm 陈仕炎, 高建国, 2005. 会泽铅锌矿矿山厂矿段趋势面分析及深部预测. 云南地质, 24(4): 442-449. doi: 10.3969/j.issn.1004-1885.2005.04.014 邓兆伦, 江华年, 1984. 山西省西安里地区构造体系的复合及其趋势面分析. 地球科学——中国地质大学学报, 9(2): 53-63. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX198402007.htm 冯建之, 2009. 河南小秦岭金矿构造控矿规律及控矿模式. 矿产与地质, 23(4): 302-307. doi: 10.3969/j.issn.1001-5663.2009.04.003 胡耀明, 1984. 应用趋势面分析解释构造发展关系的几个实例. 见: 孙旭荣编, 中国地质科学院宜昌地质矿产研究所所刊(第8号). 北京: 地质出版社, 71-78. 雷世和, 1983. 铜官山铜矿控矿构造的趋势面分析及有限单元法数值模拟. 河北地质学院学报, 6(1): 30-43. https://www.cnki.com.cn/Article/CJFDTOTAL-HBDX198301003.htm 谭铁龙, 盛吉虎, 贾建业, 等, 1995. 文峪金矿元素地球化学统计分析及深部预测研究. 华东地质学院学报, 18(4): 353-360. https://www.cnki.com.cn/Article/CJFDTOTAL-HDDZ504.008.htm 王可勇, 范永香, 高秋斌, 1997. 文峪金矿床505脉矿化特征及构造控矿规律. 贵金属地质, 6(4): 270-277. https://www.cnki.com.cn/Article/CJFDTOTAL-GJSD704.003.htm 谢荣举, 卢作祥, 1987. 河南灵宝文峪金矿矿床地质特征及505号脉矿化富集规律探讨. 地球科学——武汉地质学院学报, 12(5): 476. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX198705002.htm 徐克勇, 1987. 小秦岭金矿田控脉(矿)构造特征. 陕西地质, 5(2): 22-27. https://www.cnki.com.cn/Article/CJFDTOTAL-SXDY198702002.htm 徐叶兵, 范永香, 2003. 河南省文峪金矿床构造控矿规律研究. 地质与勘探, 39(5): 30-34. https://www.cnki.com.cn/Article/CJFDTOTAL-DZKT200305007.htm 颜正信, 孙卫志, 薛成, 2007. 小秦岭金矿田中深部构造控矿规律及盲矿预测. 黄金, 28(12): 17-21. doi: 10.3969/j.issn.1001-1277.2007.12.005 杨晓勇, 王奎仁, 孙慕容, 1996. 安徽沙溪斑岩铜矿床矿体空间分布的趋势面分析及其控矿构造的关系. 高校地质学报, 2(3): 273-283. https://www.cnki.com.cn/Article/CJFDTOTAL-GXDX603.002.htm 杨振, 闵厚禄, 季翱, 等, 2009. 基于趋势面分析的大冶铁矿控矿构造及深部矿体定位研究. 金属矿山, 38(11): 81-85. doi: 10.3321/j.issn:1001-1250.2009.11.024 曾庆丰, 雷世和, 1983. 成矿构造研究的几个问题. 地质与勘探, 19(3): 5-14. https://www.cnki.com.cn/Article/CJFDTOTAL-DZKT198303002.htm 张宏伟, 陈学华, 胡占峰, 2000. 活动断裂研究中的趋势面分析方法. 辽宁工程大学学报(自然科学版), 19(3): 225-228. doi: 10.3969/j.issn.1008-0562.2000.03.001 -
下载:
点击查看大图
图(6)
计量
- 文章访问数: 2946
- HTML全文浏览量: 550
- PDF下载量: 321
- 被引次数: 0
