Identifying potential Au-Pb-Ag mineralization in SE Shuangkoushan, North Qaidam, Western China: Combined log-ratio approach and singularity mapping
作者： Xin Chen , Rongke Xu , Youye Zheng , Xiaojia Jiang , Wenyang Du
DOI: 10.1016/J.GEXPLO.2017.04.001
关键词: Geology 、 Log ratio 、 Geomorphology 、 Regolith 、 Singularity 、 Singularity analysis 、 Geochemistry 、 Multifractal system 、 Mineralization (geology)
摘要: Abstract Recognition of weak geochemical anomalies from background is an overlooked issue in the interpretation regional data used to define exploration targets areas covered by deserts, regolith, or vegetation. In this study, log-ratio transformation methods were account compositional character data. A robust factor analysis (CoDa-FA) was utilized identify ensembles elements related mineralization. Multifractal singularity and mean ± 2 standard deviation (mean ± 2STD) method Au mineralization-related North Qaidam Gobi Desert landscape area. The results show that CoDa-FA for centered logratio-transformed can accurately recognize assemblages Pb-Ag mineralization, representing orogenic mineralization hydrothermal-type respectively. delineated mean ± 2STD showed signals SE Shuangkoushan. However, mapping efficient enhancing outlining a low relative method. anomaly maps determined good ore-potentiality Shuangkoushan, many ore bodies have been found anomalous areas. would not only be useful guide verification potential metallogenic belt, but also raise awareness reanalyzing those
sci-hub.se 参考文章(56)
Jiangnan Zhao, Shouyu Chen, Renguang Zuo, Identifying geochemical anomalies associated with Au–Cu mineralization using multifractal and artificial neural network models in the Ningqiang district, Shaanxi, China Journal of Geochemical Exploration. ,vol. 164, pp. 54- 64 ,(2016) , 10.1016/J.GEXPLO.2015.06.018
Qiuming Cheng, Spatial and scaling modelling for geochemical anomaly separation Journal of Geochemical Exploration. ,vol. 65, pp. 175- 194 ,(1999) , 10.1016/S0375-6742(99)00028-X
Renguang Zuo, Qinglin Xia, Daojun Zhang, A comparison study of the C–A and S–A models with singularity analysis to identify geochemical anomalies in covered areas Applied Geochemistry. ,vol. 33, pp. 165- 172 ,(2013) , 10.1016/J.APGEOCHEM.2013.02.009
Qiuming Cheng, Mapping singularities with stream sediment geochemical data for prediction of undiscovered mineral deposits in Gejiu, Yunnan Province, China Ore Geology Reviews. ,vol. 32, pp. 314- 324 ,(2007) , 10.1016/J.OREGEOREV.2006.10.002
Ross Ihaka, Robert Gentleman, R: A Language for Data Analysis and Graphics Journal of Computational and Graphical Statistics. ,vol. 5, pp. 299- 314 ,(1996) , 10.1080/10618600.1996.10474713
Katrien Van Driessen, Peter J. Rousseeuw, A fast algorithm for the minimum covariance determinant estimator Technometrics. ,vol. 41, pp. 212- 223 ,(1999) , 10.2307/1270566
Jian Bai, Alok Porwal, Craig Hart, Arianne Ford, Le Yu, Mapping geochemical singularity using multifractal analysis: Application to anomaly definition on stream sediments data from Funin Sheet, Yunnan, China Journal of Geochemical Exploration. ,vol. 104, pp. 1- 11 ,(2010) , 10.1016/J.GEXPLO.2009.09.002
M. A. OLIVER, R. WEBSTER, Kriging: a method of interpolation for geographical information systems International Journal of Geographic Information Systems. ,vol. 4, pp. 313- 332 ,(1990) , 10.1080/02693799008941549
G. Chen, Q. Cheng, T. Liu, Y. Yang, Mapping local singularities using magnetic data to investigate the volcanic rocks of the Qikou depression, Dagang oilfield, eastern China Nonlinear Processes in Geophysics. ,vol. 20, pp. 501- 511 ,(2013) , 10.5194/NPG-20-501-2013
Wenlei Wang, Jie Zhao, Qiuming Cheng, Application of singularity index mapping technique to gravity/magnetic data analysis in southeastern Yunnan mineral district, China Journal of Applied Geophysics. ,vol. 92, pp. 39- 49 ,(2013) , 10.1016/J.JAPPGEO.2013.02.012