Volume 36 Issue 2
Mar.  2011
Turn off MathJax
Article Contents
Article Navigation >  Earth Science  > 2011  >  36(2): 341-346
ZHAO Bin-bin, CHEN Yong-qing, 2011. Singular-Value Decomposition (SVD) for Extraction of Gravity Anomaly Associated with Gold Mineralization in the Tongshi Gold Orefield, Western Shandong Province, East China. Earth Science, 36(2): 341-346. doi: 10.3799/dqkx.2011.036
Citation: ZHAO Bin-bin, CHEN Yong-qing, 2011. Singular-Value Decomposition (SVD) for Extraction of Gravity Anomaly Associated with Gold Mineralization in the Tongshi Gold Orefield, Western Shandong Province, East China. Earth Science, 36(2): 341-346. doi: 10.3799/dqkx.2011.036
shu

Singular-Value Decomposition (SVD) for Extraction of Gravity Anomaly Associated with Gold Mineralization in the Tongshi Gold Orefield, Western Shandong Province, East China

doi: 10.3799/dqkx.2011.036

  • School of the Earth Sciences & Resources, China University of Geosciences, Beijing 100083, China

  • Received Date: 2010-05-12
    Available Online: 2021-11-10
  • Publish Date: 2011-03-01
    Abstract
  • A singular-value decomposition (SVD) program on a MATLAB platform was effectively used to handle gravity signals for the Tongshi gold field. Firstly. The gravity signals are firstly decomposed into different eigenimages with singular-value decomposition method. Secondly, the thresholds between the eigenvalues reflecting different layers of ore-controlling factors are established by multi-fractal method. Finally the eigenvalues with different layers of ore-controlling factors were rebuilt on certain mathematical rules. This yielded three layers of two-dimensional singular-value images that meticulously depict ore-controlling factors in different scales respectively. (1) The regional ore-controlling factor is a saddle valley with the gravity anomaly values varying from -55 to 51 μm/s2 of the NW trending swell with the gravity anomaly values varying from -55 to 567 μm/s2 on the SW side of the Mesozoic volcanic sedimentary basin with the gravity anomaly values varying from -56 to -974 μm/s2. The saddle valley might be tectonically an extensional area where the Tongshi complex pluton and all gold deposits are located and thus this area is a favorable area for gold deposits. (2) The local ore-controlling factor is the Tongshi complex pluton with a negative circular gravity anomaly varying from -339 to -11 μm/s2 and the ring contact metasomatic mineralization zone around the Tongshi complex with the positive gravity anomaly varying from 37 to 345 μm/s2. The porphyry gold occurrences are located within the Tongshi intrusive complex and Skarn iron-copper-gold occurrences are located in the inner contact metasomatic zone between the intrusive complex and its host rocks. Crypto-breccia and Carlin-type gold deposits are located at the outer contact metasomatic zone between the intrusive complex and its host rocks. Thus the two areas are potential areas for gold deposits. (3) The concrete ore-controlling factor is crossing areas between the NE trending faults and NW trending faults reflected by the two trending gravity anomaly zones. Almost all gold deposits are located within crossing areas and thus these areas are prospective areas for gold deposits. (4) The Tongshi gold field has a typical complexity with multi-layers of ore-controlling factors.

     

    • FullText(HTML)
  • loading
    • References(29)
  • Cagnoli, B., Ulrych, T.J., 2001. Singular value decomposition and wavy reflections in ground-penetrating radar images of base surge deposits. Journal of Applied Geophysics, 48(3): 175-182. doi: 10.1016/S0926-9851(01)00089-1
    Chen, Y.Q., Liu, H.G., 2000. Delineation of potential mineral resources region based on geo-anomaly unit. Journal of China University of Geosciences, 11(2): 158-163. http://www.cqvip.com/QK/84134A/20002/4000690583.html
    Chen, Y.Q., Zhao, P.D., Chen, J.G., et al., 2001. Application of the geo-anomaly unit concept in quantitative delineation and assessment of gold ore targets in western Shangdong uplift terrain, eastern China. Natural Resources Research, 10(1): 35-49. doi: 10.1023/A:1011581414877
    Chen, Y.Q., Zhao, P.D., Liu, H.G., 2001. Accumulation and evolution of ore-forming composition of gold deposits in the western Shandong uplift terrain. Earth Science—Journal of China University of Geosciences, 26(1): 41-48 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-DQKX200101008.htm
    Cheng, Q.M., 2007. Mapping singularities with stream sediment geochemical data for prediction of undiscovered mineral deposits in Gejiu, Yunnan Province, China. Ore Geology Reviews, 32(1-2): 314-324. doi: 10.1016/j.oregeorev.2006.10.002
    Cheng, Q.M., 2008. Non-linear theory and power-law models for information integration and mineral resources quantitative assessments. Math. Geosci. , 40(5): 503-532. doi: 10.1007/s11004-008-9172-6
    Cheng, Q.M., Zhao, P.D., Chen, J.G., et al., 2009a. Application of singularity theory in prediction of tin and copper mineral deposits in Gejiu district, Yunnan, China: weak information extraction and mixing information decomposition. Earth Science—Journal of China University of Geosciences, 34(2): 232-242 (in Chinese with English abstract). doi: 10.3799/dqkx.2009.021
    Cheng, Q.M., Zhao, P.D., Zhang, S.Y., et al., 2009b. Application of singularity theory in prediction of tin and copper mineral deposits in Gejiu district, Yunnan, China: information integration and delineation of mineral exploration targets. Earth Science—Journal of China University of Geosciences, 34(2): 243-252 (in Chinese with English abstract). doi: 10.3799/dqkx.2009.022
    Freire, S.L.M., Ulrych, T.J., 1988. Application of singular value decomposition to vertical seismic profiling. Geophysics, 53(6): 778-785. doi: 10.1190/1.1442513
    Glifford, G.D., 2005. Singular value decomposition & independent component analysis for blind source separation. HST582J/6.555J/16.456J, Biomedical signal and Image Processing, Spring 2005.
    Hu, H.B., Mao, J.W., Niu, S.Y., et al. 2005. Study on ore-forming fluids of the Guilaizhuang gold deposits in Pingyi, western Shangdong. J. Mineral. Petrol. , 25(1): 38-44 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-KWYS200501008.htm
    Li, Q.M., 2005. GIS-based multifractal/inversion methods for feature extraction and applications in anomaly identification for mineral exploration(Ph. D. thesis). York University, Toronto, Canada. 211.
    Li, Q.M., Cheng, Q.M., 2004. Fractal singular value (Eginvalue) decomposition method for geophysical and geochemical anomaly reconstruction. Earth Science—Journal of China University of Geosciences, 29 (1): 109-118 (in Chinese with English abstract). http://d.wanfangdata.com.cn/Periodical/dqkx200401019
    Li, Q.M., Liu, S.H., 2003. Geophysical signal decomposition by singular method and application in GIS. Process in Geophysics, 18(1): 97-102 (in Chinese with English abstrace). http://en.cnki.com.cn/Article_en/CJFDTOTAL-DQWJ200301016.htm
    Lin, J.Q., Tan, D.J., Jin, Y., 1996. 40Ar/39Ar ages of Mesozoic igneous activities in western Shandong. Acta Petrologica et Mineralogica, 15(3): 213-220 (in Chinese with English abstract). http://www.researchgate.net/publication/284321888_40Ar39Ar_ages_of_Mesozoic_igneous_activities_in_western_Shandong
    Vrabie, V.D., Mars, J.I., Lacoume, J.L., 2004. Modified singular value decomposition by means of independent component analysis. Signal Processing, 84(3): 645-652. doi: 10.1016/j.sigpro.2003.12.007
    Wang, S.C., Liu, Y.Q., Yi, P.H., et al., 2003. Gold deposits and the synthetic information metallogenic prognosis in gold deposit concentrated area. Geological Publishing House, Beijing (in Chinese).
    Yu, X.F., 2001. Ore-forming series and model of Tongshi gold field in Pingyi, Shangdong Province. Shangdong Geology, 17(3-4): 59-64 (in Chinese with English abstract). http://www.researchgate.net/publication/286785713_Ore-forming_series_and_model_of_tongshi_gold_field_in_pingyi
    Zhu, D.P., Zhang, X.M., Li, S.Q., et al., 2000. The mineralization types of Tongshi district of secondary volcanic complex rock mass in Pingyi County and their geological feature of mineralization. Gold, 21(8): 8-11 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-HJZZ200008002.htm
    陈永清, 赵鹏大, 刘红光, 2001. 鲁西金矿成矿组分的聚集与演化. 地球科学——中国地质大学学报, 26(1): 41-48. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX200101008.htm
    成秋明, 赵鹏大, 陈建国, 等, 2009a. 奇异性理论在个旧锡铜矿产资源预测中的应用: 成矿弱信息提取和复合信息分解. 地球科学——中国地质大学学报, 34(2): 232-242. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX200902001.htm
    成秋明, 赵鹏大, 张生元, 等, 2009b. 奇异性理论在个旧锡铜矿产资源预测中的应用: 综合信息集成与靶区圈定. 地球科学——中国地质大学学报, 34(2): 243-252. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX200902002.htm
    胡华斌, 毛景文, 牛树银, 等, 2005. 鲁西平邑归来庄金矿床成矿流体研究. 矿物岩石, 25(1): 38-44. doi: 10.3969/j.issn.1001-6872.2005.01.008
    李庆谋, 成秋明, 2004. 分形奇异(特征)值分解方法与地球物理和地球化学异常重建. 地球科学——中国地质大学学报, 29(1): 109-118. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX200401019.htm
    李庆谋, 刘少华, 2003. GIS环境下地球物理信号的奇异值分解、多维分形特征与应用. 地球物理学进展, 18(1): 97-102. doi: 10.3969/j.issn.1004-2903.2003.01.016
    林景仟, 谭东娟, 金烨, 1996. 鲁西地区中生代火成活动的40Ar/39Ar年龄. 岩石矿物学杂志, 15(3): 213-220. https://www.cnki.com.cn/Article/CJFDTOTAL-YSKW603.002.htm
    王世称, 刘玉强, 伊丕厚, 等, 2003. 山东省金矿床及金矿床密集区综合信息成矿预测. 北京: 地质出版社.
    于学峰, 2001. 山东平邑铜石金矿田成矿系列及成矿模式. 山东地质, 17(3-4): 59-64. https://www.cnki.com.cn/Article/CJFDTOTAL-SDDI2001Z1010.htm
    祝德平, 张晓梅, 李守全, 等, 2000. 平邑县铜石次火山杂岩体区金矿化类型及其成矿地质特征. 黄金, 21(8): 8-11. https://www.cnki.com.cn/Article/CJFDTOTAL-HJZZ200008002.htm
    • Relative Articles
    • Supplements(0)
    • Cited By
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Figures(6)

    Get Citation
    PDF
    XML
    Article views (259) PDF downloads(3) Cited by()
    Proportional views

    Address：湖北省武汉市洪山区鲁磨路388号《地球科学》编辑部 China Pos：430074

    Tel：027-67885075 Fax：027-67885075

    Copyright ©2020 鄂ICP备15021562号-2

    Supported by: Beijing Renhe Information Technology Co. Ltd  support: info@rhhz.net

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return