Application of fuzzy weights of evidence method in metallogenic prediction for alaskite-type uranium deposits in Namibia

WANG Jiaying; ZENG Wei; ZHANG Qi; CHEN Junqiang; TENG Fei; LI Wei; LIU Xing

doi:10.12097/j.issn.1671-2552.2023.08.006

2023 Vol. 42, No. 8

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WANG Jiaying, ZENG Wei, ZHANG Qi, CHEN Junqiang, TENG Fei, LI Wei, LIU Xing. 2023. Application of fuzzy weights of evidence method in metallogenic prediction for alaskite-type uranium deposits in Namibia. Geological Bulletin of China, 42(8): 1318-1333. doi: 10.12097/j.issn.1671-2552.2023.08.006

Citation:

WANG Jiaying, ZENG Wei, ZHANG Qi, CHEN Junqiang, TENG Fei, LI Wei, LIU Xing. 2023. Application of fuzzy weights of evidence method in metallogenic prediction for alaskite-type uranium deposits in Namibia. Geological Bulletin of China, 42(8): 1318-1333. doi: 10.12097/j.issn.1671-2552.2023.08.006

Application of fuzzy weights of evidence method in metallogenic prediction for alaskite-type uranium deposits in Namibia

1.
Tianjin Center, China Geological Survey, Tianjin 300170, China
2.
Key Laboratory of Uranium Geology, China Geological Survey, Tianjin 300170, China
3.
College of Earth Sciences, Jilin University, Changchun 130061, Jilin, China
4.
Sichuan Institute of Geological Survey, Chengdu 610000, Sichuan, China

More Information

Corresponding author: ZENG Wei, 314818431@qq.com

Received Date: 30 April 2021

Revised Date: 23 March 2022

Publish Date: 15 August 2023

Abstract

Abstract

The Erongo area of Namibia, located in the central of Damara tectonic belt, is an important uranium metallogenic belt in the world. However, the Quaternary coverage in Namibia is heavy, which seriously affects the prospecting effect of uranium deposits. In order to find out the status of uranium resources in Namibia, we have carried out the uranium resources potential evaluation, which has made full use of and deeply excavate the existing data, delineated the prediction target area, and provided support for Chinese mining enterprises to invest overseas. Based on the systematic summary of the ore-controlling factors of the alaskite-type uranium deposits in the Erongo area of Namibia, a comprehensive information prospecting model is established. On the GeoDAS GIS platform, nonlinear theory, singularity theory and fractal filtering technology are used to extract weak and slow information such as hidden structure and aero-released uranium anomaly in this area. Based on the fuzzy evidence weight method, the comprehensive information mineral prediction is carried out, and 7 uranium prospecting areas are delineated. The validity of this prediction is verified by model test. The paper holds that there is still huge prospecting potential in the Quaternary coverage area of the Grade Ⅰ prospect area, and the grade Ⅱ prospect area also has good ore-forming conditions, which is expected to achieve a breakthrough in prospecting because of the low working degree.
- metallogenic prediction /
- ore prospect areas /
- fuzzy weights of evidence /
- alaskite-type uranium deposit /
- Damara tectonic belt /
- Namibia

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References

[1]	Agterberg F P. Computer programs for mineral exploration[J]. Science, 1989, 245(4913): 76-81. doi: 10.1126/science.245.4913.76 CrossRef Google Scholar
[2]	Barnes J F H. Some aspects of the tectonic history of the Khan-Swakop region of the Damara Belt, Namibia[D]. Ph. D. Thesis, University of Leeds, 1981. Google Scholar
[3]	Bonham-Carter G F. Geographic information systems forgeoscientists: Modelling with GIS[M]. Pergamon Press, Oxford, 1994: 1-398. Google Scholar
[4]	Cheng Q M, Agterberg F P. Fuzzy weights of evidence method and its application in mineral potential mapping[J]. Natural Resources Research, 1999, 8(1): 27-35. doi: 10.1023/A:1021677510649 CrossRef Google Scholar
[5]	Cheng Q M. GIS-based multifractal anomaly analysis for prediction of mineralization and mineral deposits[C]//Jeff H. GIS applications in earth sciences. Special Paper of Geological Association of Canada, 2006: 285-296. Google Scholar
[6]	Cheng Q M. Non-linear theory and power-law models for information integration and mineral resources quantitative assessments[J]. Mathematical Geosciences, 2008, 40(5): 503-532. doi: 10.1007/s11004-008-9172-6 CrossRef Google Scholar
[7]	Corvino A F, Pretorius L E. Uraniferous leucogranites south of Ida Dome, central Damara Belt, Namibia: Morphology, distribution and mineralisation[J]. Journal of African Earth Sciences, 2013, 80: 60-73. doi: 10.1016/j.jafrearsci.2013.01.003 CrossRef Google Scholar
[8]	Corvino A F, Pretorius L E. Uraniferous leucogranites south of Ida Dome, central Damara Belt, Namibia: Morphology, distribution and mineralization[J]. Journal of African Earth Sciences, 2013, 80: 60-73. doi: 10.1016/j.jafrearsci.2013.01.003 CrossRef Google Scholar
[9]	Coward M P. The tectonic history of the Damaran Belt[C]//Miller R Mc. Evolution of the Damara Orogen of South West Africa. Special Publication of the Geological Society of South Africa, 1983, 11: 409-421. Google Scholar
[10]	De Kock G S, Eglington B, Armstrong R, et al. U-Pb and Pb-Pb ages of the Naauwpoort Formation rhyolite, Kawakeup leptite and Okongava diorite: implications for the onset of rifting in the Damara belt, Namibia[J]. Communications - Geological Survey of Namibia, 2000, 12: 81-88. Google Scholar
[11]	Goscombe B D, Gray D R. Structure and strain variation at mid-crustal levels in a transpressional orogen: A review of Kaoko Belt structure and the character of West Gondwana amalgamation and dispersal[J]. Gondwana Research, 2008, 13: 45-85. doi: 10.1016/j.gr.2007.07.002 CrossRef Google Scholar
[12]	Kröner A, Retief E A, Compston W, et al. Single-age and conventional zircon dating of remobilized basement gneisses in the central Damara belt of Namibia[J]. South African Journal of Geology, 1991, 94: 379-387. Google Scholar
[13]	Longridge L, Gibson R L, Kinnaird J A. Dome formation mechanisms in the southwestern Central Zone of the Damara Orogen, Namibia[J]. Trabajos de Geología, Universidad de Oviedo, 2009, 29: 440-444. Google Scholar
[14]	Longridge L. Tectonothermal Evolution of the southwestern Central Zone, Damara Belt, Namibia[D]. Ph. D. Thesis, University of the Witwatersrand, South Africa, 2012. Google Scholar
[15]	Martin H, Porada H. The intracratonic branch of the Damara Orogen in South West Africa I. Discussion of geodynamic models[J]. Precambrian Research, 1977, 5(4): 311-338. doi: 10.1016/0301-9268(77)90039-0 CrossRef Google Scholar
[16]	Miller R M G. The geology of Namibia. Volume 2: Neoproterozoic to Lower Palaeozoic[M]. Geological Survey of Namibia, Windhoek, 2008. Google Scholar
[17]	Miller R M G. The Pan-African Damara Orogen of South West Africa/Namibia[C]//Miller R M, The Damara Orogen. Evolution of the Damara Orogen of South West Africa/Namibia. Geological Society of South Africa Special Publication, 1983, 11: 431-515. Google Scholar
[18]	Nex P A M, Kinnaird J A, Oliver G J H. Petrology, geochemistry and mineralization ofpost-collisional magmatism in the southern Central Zone, Damaran Orogen, Namibia[J]. Journal of African Earth Sciences, 2001, 33: 481-502. doi: 10.1016/S0899-5362(01)00096-3 CrossRef Google Scholar
[19]	Nex P A M. Tectono-metamorphic setting and evolution of granitic sheets in the Goanikontes area, Namibia[D]. Ph. D. Dissertation, National University of Ireland, 1997. Google Scholar
[20]	Oliver G J H. Mid-crustal detachment and domes in the Central Zone of the Damara Orogen, Namibia[J]. Journal of African Earth Sciences, 1994, 19: 331-344. doi: 10.1016/0899-5362(94)90018-3 CrossRef Google Scholar
[21]	Poli L C, Oliver G J H. Constrictional deformation in the Central Zone of the Damara Orogen, Namibia[J]. Journal of African Earth Sciences, 2001, 33(2): 303-321. doi: 10.1016/S0899-5362(01)80065-8 CrossRef Google Scholar
[22]	Porada H. Pan-African rifting and orogenesis in southern and equatorial Africa and eastern Brazil[J]. Precambrian Research, 1989, 44(2): 103-136. doi: 10.1016/0301-9268(89)90078-8 CrossRef Google Scholar
[23]	陈金勇, 范洪海, 王生云, 等. 纳米比亚欢乐谷地区白岗岩型铀矿成矿机理剖析[J]. 高校地质学报, 2017, 23(2): 202-212. doi: 10.16108/j.issn1006-7493.2016222 CrossRef Google Scholar
[24]	陈金勇, 范洪海, 王生云, 等. 纳米比亚欢乐谷地区白岗岩型铀矿成矿物质来源分析[J]. 地质学报, 2016, 90(2): 219-230. doi: 10.3969/j.issn.0001-5717.2016.02.002 CrossRef Google Scholar
[25]	陈金勇. 纳米比亚欢乐谷地区白岗岩型铀矿成矿机理研究[D]. 核工业北京地质研究院博士学位论文, 2014. Google Scholar
[26]	陈军强, 曾威, 王佳营, 等. 全球和我国铀资源供需形势分析[J]. 华北地质, 2021, 44(2): 25-34. Google Scholar
[27]	成秋明, 陈志军, Ali Khaled. 模糊证据权方法在镇沅(老王寨)地区金矿资源评价中的应用[J]. 地球科学(中国地质大学学报), 2007, (2): 175-184. Google Scholar
[28]	成秋明, 张生元, 左仁广, 等. 多重分形滤波方法和地球化学信息提取技术研究与进展[J]. 地学前缘, 2009, 16(2): 185-198. Google Scholar
[29]	成秋明. 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[J]. 地球科学, 2006, (3): 337-348. Google Scholar
[30]	成秋明. 覆盖区矿产综合预测思路与方法[J]. 地球科学(中国地质大学学报), 2012, 37(6): 1109-1125. Google Scholar
[31]	顾大钊, 范洪海, 孙远强. 纳米比亚白岗岩型铀矿床找矿方法探讨[J]. 矿床地质, 2014, 33(S1): 1105-1106. Google Scholar
[32]	金若时, 滕雪明. 中国北方砂岩型铀矿大规模成矿作用[J]. 华北地质, 2022, 45(1): 42-57. Google Scholar
[33]	聂江涛, 范洪海, 张杰林, 等. 纳米比亚中西部EPL3602地区构造地质特征及铀矿控矿因素[J]. 铀矿地质, 2013, 29(4): 223-230. Google Scholar
[34]	宁福俊, 王杰, 任军平, 等. 纳米比亚达马拉构造带演化和成矿研究综述[J]. 地质调查与研究, 2018, 41(2): 113-120. Google Scholar
[35]	荣建锋, 林泳钊, 王照良. 纳米比亚湖山铀矿床地质概况[J]. 四川地质学报, 2016, 36(1): 101-106. Google Scholar
[36]	万丽, 刘慧, 曾祥健. 普朗斑岩型铜矿床成矿元素多重分形特征及其矿化强度指示[J]. 吉林大学学报(地球科学版), 2021, 51(4): 1054-1063. Google Scholar
[37]	王佳营, 刘行, 薛生升, 等. 奇异性理论在达来庙草原覆盖区找矿弱信息提取中的应用[J]. 华北地质, 2021, 44(2): 14-24. Google Scholar
[38]	王佳营, 张晓军, 姚春亮, 等. 非线性理论和模糊证据权方法在内蒙古达来庙草原覆盖区钼多金属矿产预测中的应用[J]. 地质调查与研究, 2019, 42(3): 174-184. Google Scholar
[39]	王生云. 纳米比亚欢乐谷地区花岗岩地球化学特征及成因[D]. 核工业北京地质研究院博士学位论文, 2013. Google Scholar
[40]	张生元, 成秋明, 张素萍, 等. 加权证据权模型和逐步证据权模型及其在个旧锡铜矿产资源预测中的应用[J]. 地球科学(中国地质大学学报), 2009, 34(2): 281-286. Google Scholar
[41]	赵希刚, 朱西养, 杨永记, 等. 纳米比亚达马拉造山带白岗岩型铀矿成矿规律及找矿思路[J]. 铀矿地质, 2015, 31(4): 445-452. Google Scholar
[42]	左立波, 任军平, 邱京卫, 等. 纳米比亚罗辛铀矿床地质特征、地球化学特征及成矿模式[J]. 地质找矿论丛, 2015, 30(S1): 137-145. Google Scholar
[43]	左立波, 任军平, 王杰, 等. 非洲中南部铀矿床研究现状及资源潜力分析[J]. 地质科技情报, 2017, 36(1): 128-139. Google Scholar