应用多重分形滤波技术提取致矿地球化学异常: 以西南“三江”南段Cu、Zn致矿异常提取为例

陈永清; 张生元; 夏庆霖; 李文昌; 卢映祥; 黄静宁

Volume 31 Issue 6

Jun. 2006

Turn off MathJax

Article Contents

Article Navigation > Earth Science > 2006 > 31(6): 861-866

CHEN Yong-qing, ZHANG Sheng-yuan, XIA Qing-lin, LI Wen-chang, LU Ying-xiang, HUANG Jing-ning, 2006. Application of Multi-Fractal Filtering to Extraction of Geochemical Anomalies from Multi-Geochemical Backgrounds: A Case Study of the Southern Section of 'Sanjiang Ore-Forming Zone', Southwestern China. Earth Science, 31(6): 861-866.

Citation:

CHEN Yong-qing, ZHANG Sheng-yuan, XIA Qing-lin, LI Wen-chang, LU Ying-xiang, HUANG Jing-ning, 2006. Application of Multi-Fractal Filtering to Extraction of Geochemical Anomalies from Multi-Geochemical Backgrounds: A Case Study of the Southern Section of "Sanjiang Ore-Forming Zone", Southwestern China. Earth Science, 31(6): 861-866.

Citation:

CHEN Yong-qing, ZHANG Sheng-yuan, XIA Qing-lin, LI Wen-chang, LU Ying-xiang, HUANG Jing-ning, 2006. Application of Multi-Fractal Filtering to Extraction of Geochemical Anomalies from Multi-Geochemical Backgrounds: A Case Study of the Southern Section of "Sanjiang Ore-Forming Zone", Southwestern China. Earth Science, 31(6): 861-866.

PDF( 1679 KB)

Application of Multi-Fractal Filtering to Extraction of Geochemical Anomalies from Multi-Geochemical Backgrounds: A Case Study of the Southern Section of "Sanjiang Ore-Forming Zone", Southwestern China

1.
Faculty of Earth Sciences and Mineral Resources, China University of Geosciences, Beijing 100083, China
2.
Development and Research Center, China Geological Survey, Beijing 100037, China
3.
School of Economics and Commerce, Shijiazhuang University of Economics, Shijiazhuang 050031, China
4.
Faculty of Earth Resources, China University of Geosciences, Wuhan 430074, China
5.
Yunnan Geological Survey, Kunming 650051, China

Received Date: 2006-03-06
Publish Date: 2006-11-25

Abstract

Abstract

The southern section of "Sanjiang ore-forming zone" (the western Yunnan terrain), southwestern China, located at the joined belt between the Indian plate and Yangtze plate, is an important area of eastern Tethyan tectonic ore-forming domain. The polycyclic tectono-magmatic activities resulted both in the diversity of ore-forming geochemical background, and in the numerous base metal deposits and precious metal deposits, including a few such world-class deposits as the Jinding Pb-Zn deposit and the Laowangzhai Au deposit within the section. Such a complex geochemical background challenges us with the geostatistical extraction of geochemical anomalies for the mineralization purpose. For this, the multi- fractal filtering (S-A method) technique is introduced to isolate effectively the Cu and Zn anomalies related to mineralization in the complex multi-geochemical background. The following three research results are obtained in this study: (1) In the complicated geochemical background, the residual anomalies of Cu and Zn uncovered by Kriging are typical of the regional anomalies controlled by the regional linear fractural pattern; but the S-A method reveals the local anomalies of Cu and Zn associated with mineralization; (2) The separation of the Cu anomaly from its background demonstrates that the S-A method could effectively identify the high geochemical background of Cu from basalts and extract the Cu anomalies from multi-geochemical background, including weak and hidden Cu anomalies from their low background; (3) A few NNE-trending Zn mineralized and anomalous belts containing the super-large Jinding Pb-Zn deposit and a series of some other Pb-Zn deposits, that are absent at the Zn original data map, are clearly shown at the S-A anomalous map. This discovery presents us with not only new areas for prospecting Cu-Pb-Zn deposits but also new perspectives for the research into new ore-controlling factors, for the regional distribution of Pb-Zn deposits, which may include NNE-trending hidden fractures. All the research work is completed with the help of MORPAS 3.0.

FullText(HTML)

References(16)

References

Chen, Y. Q., Chen, J. G., Wang, X. Q., 2006. GIS based integrated quantitative assessment of mineral resources. Geological Bulletin of China (in Press, in Chinese with English abstract).

Chen, Y. Q., Lu, Y. X., Xia, Q. L., 2005. Geochemical characteristics of the Hetaoping Pb-Zn deposit, Baoshan area, Yunnan Province, and its genetic model and ore prospecting pattern. Geology in China, 32 (1): 90-99 (in Chinese with English abstract).

Chen, Y. Q., Xia, Q. L., Liu, H. G., 2003. Geochemical characteristics of Pt-Pd-Cu ore-bearing formations in eastern Yunnan and analysis of their ore potentiality. Geology in China, 30 (3): 225-234 (in Chinese with English abstract).

Cheng, Q. M., 2001. Selection of multifractal scaling breaks and separation of geochemical and geophysical anomalies. Journal of China University of Geosciences, 12 (1): 54-59.

Cheng, Q. M., 2002. Geodata analysis system (Geo Das) for mineral exploration: User 'guide and exercise manual. Material for thetraining workshop on Geo Das held at York University, November1-3.289 (http://www.gisworld.org/geodas).

Cheng, Q. M., 2004. A new model for quantifying anisotropic scale invariance and for decomposition of mixing patterns. Mathematical Geology, 36 (3): 345-360. doi: 10.1023/B:MATG.0000028441.62108.8a

Cheng, Q. M., 2006. Singularity-generalized self-similarity-fractal spectrum (3S). Earth Science—Journal of China University of Geosciences, 31 (3): 337-348 (in Chinese with English abstract).

Cheng, Q. M., Xu, Y. G., Grunsky, E., 2000. Integrated spatial and spectrum analysis for geochemical anomaly separation. Nature Resources Research, 9 (1): 43-56. doi: 10.1023/A:1010109829861

Gorelov, D. A., 1982. Quantitative characteristics of geologic anomalies in assessing ore capacity. International Geology Review, 24 (4): 457-465. doi: 10.1080/00206818209452430

Herzfeld, U. C., Overbeck, C., 1999. Analysis and simulation of scale-dependent fractal surfaces with application to seafloor morphology. Computer & Geosciences, 25 (9): 963-978.

Lovejoy, S., Schertzer, D., Gagnon, J. S., et al., 2005. Multifractal simulation of the earth's surface and interior: Anisotropic singularities and morphology. In: Cheng, Q. M., Bonham-Carter, G., eds., Proceeding of IAMG: GIS and spatial analysis, 1: 37-54.

Xu, Y. G., Cheng, Q. M., 2001. A multifractal filter technique for geochemical data analysis from Nova Scotia, Canada. Geochemistry: Exploration, Analysis and Environment, 1 (2): 1-12.

陈永清, 陈建国, 汪新庆, 2006. 基于GIS的矿产资源综合定量评价. 地质通报(待刊).

陈永清, 卢映祥, 夏庆霖, 2005. 云南保山核桃坪铅锌矿床地球化学特征及其成矿模式与找矿模型. 中国地质, 32 (1): 90-99. https://www.cnki.com.cn/Article/CJFDTOTAL-DIZI200501012.htm

陈永清, 夏庆霖, 刘红光, 2003. 滇东Pt-Pd-Cu含矿建造地球化学特征及其含矿性分析. 中国地质, 30 (3): 225-234. doi: 10.3969/j.issn.1000-3657.2003.03.001

成秋明, 2006. 非线性成矿预测理论: 多重分形奇异性-广义自相似性-分形谱系模型与方法. 地球科学——中国地质大学学报, 31 (3): 337-348. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX200603008.htm

Relative Articles

Supplements(0)

Cited By

Proportional views