LU Lu1, 2, ZHU Lixin1, *, XIAO Keyan2, MA Shengming3, YIN Jiangning2 and XU Mingzuan4
1 Chinese Academy of Geological Sciences, Beijing 100037, China;2 Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China;3 Institute of Geophysical and Geochemical Exploration, CAGS, Langfang 065000, Hebei, China;4 Jiangsu Provincial Institute of Geological Prospecting Techniques, Nanjing 210008, Jiangsu ,ChinaThis work was granted by the basic scientific research fund of Institute of Mineral Resources, Chinese Academy of Geological Sciences (Grant No. K1103) and the National Natural Science Foundation of China (Grant No. 41002119). The authors are grateful to Prof. Chen Ming for his suggestions to this paper during our discussion.
The Caixiashan-Weiquan area is an important ore concentration area in the eastern Tianshan metallogenic belt. Firstly, this paper studies geochemical features of 1564 samples of 1:200000 stream sediments of the Matoutan mapsheet, where the Caixiashan and Weiquan deposits are located. Processing, analysis and explanation of exploration geochemical data play an important role in the procedure of finding the ore, which are related to whether the measured elements content of geochemical samples can effectively guide the work of mineral exploration. As a highly nonlinear dynamical system, the neural network is more analogous to the human brains in terms of principles and features compared with conventional geochemical approaches. It can adapt itself to the environment, sum up laws, complete pattern recognition. Secondly, the authors used the Kohonen neural network to classify all samples based on 10 mineralization elements of stream sediment samples in order to determine possible mineral ores, reduce the scope of ore targets and study indicator elements of the ninth group of samples, which is the mostly closest to the deposit. The results show that the neural network can delineate metallogenic prospective areas and is effective in the discovery of deep geochemical information.
The Caixiashan-Weiquan area is an important ore concentration area in the eastern Tianshan metallogenic belt. Firstly, this paper studies geochemical features of 1564 samples of 1:200000 stream sediments of the Matoutan mapsheet, where the Caixiashan and Weiquan deposits are located. Processing, analysis and explanation of exploration geochemical data play an important role in the procedure of finding the ore, which are related to whether the measured elements content of geochemical samples can effectively guide the work of mineral exploration. As a highly nonlinear dynamical system, the neural network is more analogous to the human brains in terms of principles and features compared with conventional geochemical approaches. It can adapt itself to the environment, sum up laws, complete pattern recognition. Secondly, the authors used the Kohonen neural network to classify all samples based on 10 mineralization elements of stream sediment samples in order to determine possible mineral ores, reduce the scope of ore targets and study indicator elements of the ninth group of samples, which is the mostly closest to the deposit. The results show that the neural network can delineate metallogenic prospective areas and is effective in the discovery of deep geochemical information.
LU Lu, ZHU Lixin, *, XIAO Keyan, MA Shengming, YIN Jiangning and XU Mingzuan.2012. Geochemical Features and Metallogenic Prediction of the Caixiashan-Weiquan Area in the East Tianshan Region[J]. ACTA GEOLOGICA SINICA(English edition),86(4):885~893
复制
